LVM preference for multipath verses disk/by-id/scsi
Dear all,
I have a volume group that is currently using discs directly
presented from EMC e.g /dev/disk/by-id/scsi-360060480000290300618533030313042 .
An lvdisplay -v shows these PVs:
# vgdisplay -v vg_mds
Using volume group(s) on command line
Finding volume group "vg_mds"
--- Volume group ---
VG Name vg_mds
System ID
Format lvm2
Metadata Areas 12
Metadata Sequence No 4
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 1
Open LV 1
Max PV 0
Cur PV 12
Act PV 12
VG Size 202.12 GB
PE Size 32.00 MB
Total PE 6468
Alloc PE / Size 6468 / 202.12 GB
Free PE / Size 0 / 0
VG UUID Wnk1a8-xdVf-RorP-ZxPE-Z3D9-5fp1-2o4hHs--- Logical volume ---
LV Name /dev/vg_mds/lvol_mds VG Name vg_mds LV UUID TErCZW-senu-YR3k-I25n-Tqk9-BK2k-3mQY3S LV Write Access read/write LV Status available # open 1 LV Size 202.12 GB Current LE 6468 Segments 12 Allocation inherit Read ahead sectors 0 Block device 253:7
--- Physical volumes ---
PV Name/dev/disk/by-id/scsi-360060480000290300618533030313133
PV UUID 255V1X-uMZp-Lod1-3jsa-cCGd-JaNZ-v0dEXn PV Status allocatable Total PE / Free PE 539 / 0
PV Name/dev/disk/by-id/scsi-360060480000290300618533030313131
PV UUID RU5WZK-G3hY-lXCD-F6Kj-PcJA-DcbE-iV17P7 PV Status allocatable Total PE / Free PE 539 / 0
PV Name/dev/disk/by-id/scsi-360060480000290300618533030313046
PV UUID c3DVym-lzdw-MgS6-acQI-BcUD-UOGq-iG6hSe PV Status allocatable Total PE / Free PE 539 / 0
PV Name/dev/disk/by-id/scsi-360060480000290300618533030313044
PV UUID d7VD54-KmXZ-t8eX-dvph-9lSp-ym03-Lc62sI PV Status allocatable Total PE / Free PE 539 / 0
PV Name/dev/disk/by-id/scsi-360060480000290300618533030313042
PV UUID n32oAY-soe3-odYI-SAFQ-yM7v-FRaw-e9hS63 PV Status allocatable Total PE / Free PE 539 / 0
PV Name/dev/disk/by-id/scsi-360060480000290300618533030313039
PV UUID hT2hZ7-XAZr-ZUte-rzLV-kwFX-Jtih-K3OgZe PV Status allocatable Total PE / Free PE 539 / 0
PV Name/dev/disk/by-id/scsi-360060480000290300618533030313037
PV UUID ut4fEx-R0c2-lA4y-qS3F-SYfp-Chuz-2SrvTo PV Status allocatable Total PE / Free PE 539 / 0
PV Name/dev/disk/by-id/scsi-360060480000290300618533030313035
PV UUID BMJ8LA-b0L7-aAoK-4WqG-MLdU-s8Y8-xGib2s PV Status allocatable Total PE / Free PE 539 / 0
PV Name/dev/disk/by-id/scsi-360060480000290300618533030313033
PV UUID uSasZ1-96rT-ngGN-Wfcr-fBNg-ceM0-GaccVU PV Status allocatable Total PE / Free PE 539 / 0
PV Name/dev/disk/by-id/scsi-360060480000290300618533030313031
PV UUID R15yAf-t1YO-Z0Dx-4n2G-oTyD-Secp-2igMJc PV Status allocatable Total PE / Free PE 539 / 0
PV Name/dev/disk/by-id/scsi-360060480000290300618533030304646
PV UUID nrhhx1-7AxM-VmVv-sRY5-TLR7-UAEE-wBUIMB PV Status allocatable Total PE / Free PE 539 / 0
PV Name/dev/disk/by-id/scsi-360060480000290300618533030304644
PV UUID ctz8rd-ew58-0pU8-FssR-x9pR-KSA9-mI4flw PV Status allocatable Total PE / Free PE 539 / 0
I want to export this volume group and inport it again using multipathing. I have configured the multipathing thus,
# multipath -ll dm-6_010F (360060480000290300618533030313046) dm-6 EMC,SYMMETRIX [size=17G][features=0][hwhandler=0] \_ round-robin 0 [prio=2][active] \_ 0:0:0:31 sdx 65:112 [active][ready] \_ 1:0:0:31 sdk 8:160 [active][ready] dm-17_0012 (360060480000290300618533030303132) dm-17 EMC,SYMMETRIX [size=4.7M][features=0][hwhandler=0] \_ round-robin 0 [prio=2][active] \_ 0:0:0:0 sdn 8:208 [active][ready] \_ 1:0:0:0 sda 8:0 [active][ready] dm-13_0103 (360060480000290300618533030313033) dm-13 EMC,SYMMETRIX [size=17G][features=0][hwhandler=0] \_ round-robin 0 [prio=2][active] \_ 0:0:0:25 sdr 65:16 [active][ready] \_ 1:0:0:25 sde 8:64 [active][ready] dm-10_0109 (360060480000290300618533030313039) dm-10 EMC,SYMMETRIX [size=17G][features=0][hwhandler=0] \_ round-robin 0 [prio=2][active] \_ 0:0:0:28 sdu 65:64 [active][ready] \_ 1:0:0:28 sdh 8:112 [active][ready] dm-14_0101 (360060480000290300618533030313031) dm-14 EMC,SYMMETRIX [size=17G][features=0][hwhandler=0] \_ round-robin 0 [prio=2][active] \_ 0:0:0:24 sdq 65:0 [active][ready] \_ 1:0:0:24 sdd 8:48 [active][ready] dm-8_010D (360060480000290300618533030313044) dm-8 EMC,SYMMETRIX [size=17G][features=0][hwhandler=0] \_ round-robin 0 [prio=2][active] \_ 0:0:0:30 sdw 65:96 [active][ready] \_ 1:0:0:30 sdj 8:144 [active][ready] dm-15_00FF (360060480000290300618533030304646) dm-15 EMC,SYMMETRIX [size=17G][features=0][hwhandler=0] \_ round-robin 0 [prio=2][active] \_ 0:0:0:23 sdp 8:240 [active][ready] \_ 1:0:0:23 sdc 8:32 [active][ready] dm-11_0107 (360060480000290300618533030313037) dm-11 EMC,SYMMETRIX [size=17G][features=0][hwhandler=0] \_ round-robin 0 [prio=2][active] \_ 0:0:0:27 sdt 65:48 [active][ready] \_ 1:0:0:27 sdg 8:96 [active][ready] dm-4_0113 (360060480000290300618533030313133) dm-4 EMC,SYMMETRIX [size=17G][features=0][hwhandler=0] \_ round-robin 0 [prio=2][active] \_ 0:0:0:33 sdz 65:144 [active][ready] \_ 1:0:0:33 sdm 8:192 [active][ready] dm-9_010B (360060480000290300618533030313042) dm-9 EMC,SYMMETRIX [size=17G][features=0][hwhandler=0] \_ round-robin 0 [prio=2][active] \_ 0:0:0:29 sdv 65:80 [active][ready] \_ 1:0:0:29 sdi 8:128 [active][ready] dm-16_00FD (360060480000290300618533030304644) dm-16 EMC,SYMMETRIX [size=17G][features=0][hwhandler=0] \_ round-robin 0 [prio=2][active] \_ 0:0:0:22 sdo 8:224 [active][ready] \_ 1:0:0:22 sdb 8:16 [active][ready] dm-12_0105 (360060480000290300618533030313035) dm-12 EMC,SYMMETRIX [size=17G][features=0][hwhandler=0] \_ round-robin 0 [prio=2][active] \_ 0:0:0:26 sds 65:32 [active][ready] \_ 1:0:0:26 sdf 8:80 [active][ready] dm-5_0111 (360060480000290300618533030313131) dm-5 EMC,SYMMETRIX [size=17G][features=0][hwhandler=0] \_ round-robin 0 [prio=2][active] \_ 0:0:0:32 sdy 65:128 [active][ready] \_ 1:0:0:32 sdl 8:176 [active][ready]
Device mapper reports this:
# dmsetup ls dm-6_010F (253, 6) dm-17_0012 (253, 17) dm-13_0103 (253, 13) dm-10_0109 (253, 10) vg00-app052 (253, 3) vg00-xen (253, 2) vg00-usr (253, 0) vg00-var (253, 1) dm-14_0101 (253, 14) dm-8_010D (253, 8) dm-15_00FF (253, 15) dm-11_0107 (253, 11) dm-4_0113 (253, 4) vg_mds-lvol_mds (253, 7) dm-9_010B (253, 9) dm-16_00FD (253, 16) dm-12_0105 (253, 12) dm-5_0111 (253, 5)
What I do not understand is that surly when I perform a vgscan how will it decide to query only the devices presented from the multipathd, and ignore those presented via the dev/disk/by-id/scsi-nnnnnnnnnn? Won't it see two vg_mds volumes instead of only those volumes that lie on the multipathed discs, which are the same pshycial discs as the disk/by-id?
My plan of action is currently:
vgchange -a n vg_mds
vgexport -m /tmp/vg_mds.map mds
vgexport -f /tmp/vg_mds.pv mds
vgscan
vgchange -y a vg_mds
vgimport vg_mds /*OR instead do it the long way on the next line* /
vgscan
mkdir /dev/vg_mds
mknod /dev/vg_mds/group c 64 0xNN0000
vgimport -v -s -m /tmp/vg_mds.map /dev/vg_mds
I do not see how to tell it to ignore the non-multipathed disc, or has multipathd or LVM have some preference for mutlipath discs over non-multipathed discs, and if so then what is the logic behind the decision?
Any help to further my understanding would be gratefully appreciated.
Best wishes, S.
PS. I am using SLES, but this was the only mailinglist I found for LVM so I subscribed to it. I think that LVM and multipathd implementations are reasonably similar across Linux distos. Ergo concepts here are applicable to Suse. The kernel I am using is a xen enabled host (not a guest): 2.6.16.60-0.27-xen #1 SMP.
Signature · 8 lines
Simon Loewenthal/Tele2 GSM: +31 6 2000 5427 ******** IMPORTANT NOTICE ******** Please repect the X-Reply to klunky.co.uk. PGP available 0xD86A5A17. S/MIME PKCS12 key available for Lotus Notes: Please ask me for it. This e-mail (including any attachments) may contain information that is confidential or otherwise protected from disclosure and it is intended only for the addressees. If you are not the intended recipient, please note that any copying, distribution or other use of information contained in this e-mail (and its attachments) is not allowed. If you have received this e-mail in error, kindly notify us immediately by telephone or e-mail and delete the message (including any attachments) from your system. Please note that e-mail messages may contain computer viruses or other defects, may not be accurately replicated on other systems, or may be subject of unauthorized interception or other interference without the knowledge of sender or recipient. Tele2 only send and receive e-mails on the basis that Tele2 is not responsible for any such computer viruses, corruption or other interference or any consequences thereof. It ought to be obvious that my views do not represent my employer's views.
I don't think this original Email made it through to the list, but I think I have found an solution:
In lvm.conf there is this line,
filter = [ "r|/dev/.*/by-path/.*|", "r|/dev/.*/by-id/.*|", "a/.*/" ]
If I remove the portion "r|/dev/.*/by-id/.*|", so it is rewritten as, filter = [ "r|/dev/.*/by-path/.*|", "a/.*/" ]
...then it ought to ignore the device, /dev/disk/by-id/scsi-360060480000290300618533030313133
Is this correct?
S.
Signature · 1 line
Simon Loewenthal/Tele2
Quoted 243 lines · Simon Loewenthal/NL/Tele2 wrote:
Dear all,
I have a volume group that is currently using discs directly
presented from EMC e.g/dev/disk/by-id/scsi-360060480000290300618533030313042.An lvdisplay -v shows these PVs:
# vgdisplay -v vg_mds Using volume group(s) on command line Finding volume group "vg_mds" --- Volume group --- VG Name vg_mds System ID Format lvm2 Metadata Areas 12 Metadata Sequence No 4 VG Access read/write VG Status resizable MAX LV 0 Cur LV 1 Open LV 1 Max PV 0 Cur PV 12 Act PV 12 VG Size 202.12 GB PE Size 32.00 MB Total PE 6468 Alloc PE / Size 6468 / 202.12 GB Free PE / Size 0 / 0 VG UUID Wnk1a8-xdVf-RorP-ZxPE-Z3D9-5fp1-2o4hHs--- Logical volume ---
LV Name /dev/vg_mds/lvol_mds VG Name vg_mds LV UUID TErCZW-senu-YR3k-I25n-Tqk9-BK2k-3mQY3S LV Write Access read/write LV Status available # open 1 LV Size 202.12 GB Current LE 6468 Segments 12 Allocation inherit Read ahead sectors 0 Block device 253:7--- Physical volumes ---
PV Name/dev/disk/by-id/scsi-360060480000290300618533030313133PV UUID 255V1X-uMZp-Lod1-3jsa-cCGd-JaNZ-v0dEXn PV Status allocatable Total PE / Free PE 539 / 0PV Name
/dev/disk/by-id/scsi-360060480000290300618533030313131PV UUID RU5WZK-G3hY-lXCD-F6Kj-PcJA-DcbE-iV17P7 PV Status allocatable Total PE / Free PE 539 / 0PV Name
/dev/disk/by-id/scsi-360060480000290300618533030313046PV UUID c3DVym-lzdw-MgS6-acQI-BcUD-UOGq-iG6hSe PV Status allocatable Total PE / Free PE 539 / 0PV Name
/dev/disk/by-id/scsi-360060480000290300618533030313044PV UUID d7VD54-KmXZ-t8eX-dvph-9lSp-ym03-Lc62sI PV Status allocatable Total PE / Free PE 539 / 0PV Name
/dev/disk/by-id/scsi-360060480000290300618533030313042PV UUID n32oAY-soe3-odYI-SAFQ-yM7v-FRaw-e9hS63 PV Status allocatable Total PE / Free PE 539 / 0PV Name
/dev/disk/by-id/scsi-360060480000290300618533030313039PV UUID hT2hZ7-XAZr-ZUte-rzLV-kwFX-Jtih-K3OgZe PV Status allocatable Total PE / Free PE 539 / 0PV Name
/dev/disk/by-id/scsi-360060480000290300618533030313037PV UUID ut4fEx-R0c2-lA4y-qS3F-SYfp-Chuz-2SrvTo PV Status allocatable Total PE / Free PE 539 / 0PV Name
/dev/disk/by-id/scsi-360060480000290300618533030313035PV UUID BMJ8LA-b0L7-aAoK-4WqG-MLdU-s8Y8-xGib2s PV Status allocatable Total PE / Free PE 539 / 0PV Name
/dev/disk/by-id/scsi-360060480000290300618533030313033PV UUID uSasZ1-96rT-ngGN-Wfcr-fBNg-ceM0-GaccVU PV Status allocatable Total PE / Free PE 539 / 0PV Name
/dev/disk/by-id/scsi-360060480000290300618533030313031PV UUID R15yAf-t1YO-Z0Dx-4n2G-oTyD-Secp-2igMJc PV Status allocatable Total PE / Free PE 539 / 0PV Name
/dev/disk/by-id/scsi-360060480000290300618533030304646PV UUID nrhhx1-7AxM-VmVv-sRY5-TLR7-UAEE-wBUIMB PV Status allocatable Total PE / Free PE 539 / 0PV Name
/dev/disk/by-id/scsi-360060480000290300618533030304644PV UUID ctz8rd-ew58-0pU8-FssR-x9pR-KSA9-mI4flw PV Status allocatable Total PE / Free PE 539 / 0I want to export this volume group and inport it again using multipathing. I have configured the multipathing thus,
# multipath -ll dm-6_010F (360060480000290300618533030313046) dm-6 EMC,SYMMETRIX [size=17G][features=0][hwhandler=0] \_ round-robin 0 [prio=2][active] \_ 0:0:0:31 sdx 65:112 [active][ready] \_ 1:0:0:31 sdk 8:160 [active][ready] dm-17_0012 (360060480000290300618533030303132) dm-17 EMC,SYMMETRIX [size=4.7M][features=0][hwhandler=0] \_ round-robin 0 [prio=2][active] \_ 0:0:0:0 sdn 8:208 [active][ready] \_ 1:0:0:0 sda 8:0 [active][ready] dm-13_0103 (360060480000290300618533030313033) dm-13 EMC,SYMMETRIX [size=17G][features=0][hwhandler=0] \_ round-robin 0 [prio=2][active] \_ 0:0:0:25 sdr 65:16 [active][ready] \_ 1:0:0:25 sde 8:64 [active][ready] dm-10_0109 (360060480000290300618533030313039) dm-10 EMC,SYMMETRIX [size=17G][features=0][hwhandler=0] \_ round-robin 0 [prio=2][active] \_ 0:0:0:28 sdu 65:64 [active][ready] \_ 1:0:0:28 sdh 8:112 [active][ready] dm-14_0101 (360060480000290300618533030313031) dm-14 EMC,SYMMETRIX [size=17G][features=0][hwhandler=0] \_ round-robin 0 [prio=2][active] \_ 0:0:0:24 sdq 65:0 [active][ready] \_ 1:0:0:24 sdd 8:48 [active][ready] dm-8_010D (360060480000290300618533030313044) dm-8 EMC,SYMMETRIX [size=17G][features=0][hwhandler=0] \_ round-robin 0 [prio=2][active] \_ 0:0:0:30 sdw 65:96 [active][ready] \_ 1:0:0:30 sdj 8:144 [active][ready] dm-15_00FF (360060480000290300618533030304646) dm-15 EMC,SYMMETRIX [size=17G][features=0][hwhandler=0] \_ round-robin 0 [prio=2][active] \_ 0:0:0:23 sdp 8:240 [active][ready] \_ 1:0:0:23 sdc 8:32 [active][ready] dm-11_0107 (360060480000290300618533030313037) dm-11 EMC,SYMMETRIX [size=17G][features=0][hwhandler=0] \_ round-robin 0 [prio=2][active] \_ 0:0:0:27 sdt 65:48 [active][ready] \_ 1:0:0:27 sdg 8:96 [active][ready] dm-4_0113 (360060480000290300618533030313133) dm-4 EMC,SYMMETRIX [size=17G][features=0][hwhandler=0] \_ round-robin 0 [prio=2][active] \_ 0:0:0:33 sdz 65:144 [active][ready] \_ 1:0:0:33 sdm 8:192 [active][ready] dm-9_010B (360060480000290300618533030313042) dm-9 EMC,SYMMETRIX [size=17G][features=0][hwhandler=0] \_ round-robin 0 [prio=2][active] \_ 0:0:0:29 sdv 65:80 [active][ready] \_ 1:0:0:29 sdi 8:128 [active][ready] dm-16_00FD (360060480000290300618533030304644) dm-16 EMC,SYMMETRIX [size=17G][features=0][hwhandler=0] \_ round-robin 0 [prio=2][active] \_ 0:0:0:22 sdo 8:224 [active][ready] \_ 1:0:0:22 sdb 8:16 [active][ready] dm-12_0105 (360060480000290300618533030313035) dm-12 EMC,SYMMETRIX [size=17G][features=0][hwhandler=0] \_ round-robin 0 [prio=2][active] \_ 0:0:0:26 sds 65:32 [active][ready] \_ 1:0:0:26 sdf 8:80 [active][ready] dm-5_0111 (360060480000290300618533030313131) dm-5 EMC,SYMMETRIX [size=17G][features=0][hwhandler=0] \_ round-robin 0 [prio=2][active] \_ 0:0:0:32 sdy 65:128 [active][ready] \_ 1:0:0:32 sdl 8:176 [active][ready]Device mapper reports this:
# dmsetup ls dm-6_010F (253, 6) dm-17_0012 (253, 17) dm-13_0103 (253, 13) dm-10_0109 (253, 10) vg00-app052 (253, 3) vg00-xen (253, 2) vg00-usr (253, 0) vg00-var (253, 1) dm-14_0101 (253, 14) dm-8_010D (253, 8) dm-15_00FF (253, 15) dm-11_0107 (253, 11) dm-4_0113 (253, 4) vg_mds-lvol_mds (253, 7) dm-9_010B (253, 9) dm-16_00FD (253, 16) dm-12_0105 (253, 12) dm-5_0111 (253, 5)What I do not understand is that surly when I perform a vgscan how will it decide to query only the devices presented from the multipathd, and ignore those presented via the dev/disk/by-id/scsi-nnnnnnnnnn? Won't it see two
vg_mdsvolumes instead of only those volumes that lie on the multipathed discs, which are the same pshycial discs as the disk/by-id?My plan of action is currently:
vgchange -a nvg_mds
vgexport -m/tmp/vg_mds.mapmds
vgexport -f/tmp/vg_mds.pvmds
vgscan
vgchange -y avg_mds
vgimportvg_mds/*OR instead do it the long way on the next line* /
vgscan
mkdir/dev/vg_mds
mknod/dev/vg_mds/groupc 64 0xNN0000
vgimport -v -s -m/tmp/vg_mds.map/dev/vg_mdsI do not see how to tell it to ignore the non-multipathed disc, or has multipathd or LVM have some preference for mutlipath discs over non-multipathed discs, and if so then what is the logic behind the decision?
Any help to further my understanding would be gratefully appreciated.
Best wishes, S.
PS. I am using SLES, but this was the only mailinglist I found for LVM so I subscribed to it. I think that LVM and multipathd implementations are reasonably similar across Linux distos. Ergo concepts here are applicable to Suse. The kernel I am using is a xen enabled host (not a guest): 2.6.16.60-0.27-xen #1 SMP.
Signature · 7 lines
Simon Loewenthal/Tele2 ******** IMPORTANT NOTICE ******** Please repect the X-Reply to klunky.co.uk. PGP available 0xD86A5A17. S/MIME PKCS12 key available for Lotus Notes: Please ask me for it. This e-mail (including any attachments) may contain information that is confidential or otherwise protected from disclosure and it is intended only for the addressees. If you are not the intended recipient, please note that any copying, distribution or other use of information contained in this e-mail (and its attachments) is not allowed. If you have received this e-mail in error, kindly notify us immediately by telephone or e-mail and delete the message (including any attachments) from your system. Please note that e-mail messages may contain computer viruses or other defects, may not be accurately replicated on other systems, or may be subject of unauthorized interception or other interference without the knowledge of sender or recipient. Tele2 only send and receive e-mails on the basis that Tele2 is not responsible for any such computer viruses, corruption or other interference or any consequences thereof. It ought to be obvious that my views do not represent my employer's views.
Hi,
see man 5 lvm.conf there is an option called preferred_names which is well explained
It'll instruct lvm to use the preferred_names you configured in the lvm.conf file if they exist
ie : preferred_names = "/dev/mpath/" will use /dev/mpath/XXX instead of /dev/mapper/XXX
2009/12/30 Simon Loewenthal/NL/Tele2 <[email protected]>:
Quoted 279 lines
I don't think this original Email made it through to the list, but I think I have found an solution:
In lvm.conf there is this line,
filter = [ "r|/dev/.*/by-path/.*|", "r|/dev/.*/by-id/.*|", "a/.*/" ]If I remove the portion "r|/dev/.*/by-id/.*|", so it is rewritten as, filter = [ "r|/dev/.*/by-path/.*|", "a/.*/" ]
...then it ought to ignore the device,/dev/disk/by-id/scsi-360060480000290300618533030313133Is this correct?
S.
--
Simon Loewenthal/Tele2Quoted 234 lines · Simon Loewenthal/NL/Tele2 wrote:
Dear all,
� � I have a volume group that is currently using discs directly presented from EMC e.g
/dev/disk/by-id/scsi-360060480000290300618533030313042.An lvdisplay -v shows these PVs:
# vgdisplay -v vg_mds � � Using volume group(s) on command line � � Finding volume group "vg_mds" � --- Volume group --- � VG Name � � � � � � � vg_mds � System ID � Format � � � � � � � �lvm2 � Metadata Areas � � � �12 � Metadata Sequence No �4 � VG Access � � � � � � read/write � VG Status � � � � � � resizable � MAX LV � � � � � � � �0 � Cur LV � � � � � � � �1 � Open LV � � � � � � � 1 � Max PV � � � � � � � �0 � Cur PV � � � � � � � �12 � Act PV � � � � � � � �12 � VG Size � � � � � � � 202.12 GB � PE Size � � � � � � � 32.00 MB � Total PE � � � � � � �6468 � Alloc PE / Size � � � 6468 / 202.12 GB � Free �PE / Size � � � 0 / 0 � VG UUID � � � � � � � Wnk1a8-xdVf-RorP-ZxPE-Z3D9-5fp1-2o4hHs� --- Logical volume ---
� LV Name � � � � � � � �/dev/vg_mds/lvol_mds
� VG Name � � � � � � � �vg_mds
� LV UUID � � � � � � � �TErCZW-senu-YR3k-I25n-Tqk9-BK2k-3mQY3S � LV Write Access � � � �read/write
� LV Status � � � � � � �available
� # open � � � � � � � � 1
� LV Size � � � � � � � �202.12 GB
� Current LE � � � � � � 6468
� Segments � � � � � � � 12
� Allocation � � � � � � inherit
� Read ahead sectors � � 0
� Block device � � � � � 253:7� --- Physical volumes ---
� PV Name/dev/disk/by-id/scsi-360060480000290300618533030313133� PV UUID � � � � � � � 255V1X-uMZp-Lod1-3jsa-cCGd-JaNZ-v0dEXn � PV Status � � � � � � allocatable
� Total PE / Free PE � �539 / 0� PV Name
/dev/disk/by-id/scsi-360060480000290300618533030313131� PV UUID � � � � � � � RU5WZK-G3hY-lXCD-F6Kj-PcJA-DcbE-iV17P7 � PV Status � � � � � � allocatable
� Total PE / Free PE � �539 / 0� PV Name
/dev/disk/by-id/scsi-360060480000290300618533030313046� PV UUID � � � � � � � c3DVym-lzdw-MgS6-acQI-BcUD-UOGq-iG6hSe � PV Status � � � � � � allocatable
� Total PE / Free PE � �539 / 0� PV Name
/dev/disk/by-id/scsi-360060480000290300618533030313044� PV UUID � � � � � � � d7VD54-KmXZ-t8eX-dvph-9lSp-ym03-Lc62sI � PV Status � � � � � � allocatable
� Total PE / Free PE � �539 / 0� PV Name
/dev/disk/by-id/scsi-360060480000290300618533030313042� PV UUID � � � � � � � n32oAY-soe3-odYI-SAFQ-yM7v-FRaw-e9hS63 � PV Status � � � � � � allocatable
� Total PE / Free PE � �539 / 0� PV Name
/dev/disk/by-id/scsi-360060480000290300618533030313039� PV UUID � � � � � � � hT2hZ7-XAZr-ZUte-rzLV-kwFX-Jtih-K3OgZe � PV Status � � � � � � allocatable
� Total PE / Free PE � �539 / 0� PV Name
/dev/disk/by-id/scsi-360060480000290300618533030313037� PV UUID � � � � � � � ut4fEx-R0c2-lA4y-qS3F-SYfp-Chuz-2SrvTo � PV Status � � � � � � allocatable
� Total PE / Free PE � �539 / 0� PV Name
/dev/disk/by-id/scsi-360060480000290300618533030313035� PV UUID � � � � � � � BMJ8LA-b0L7-aAoK-4WqG-MLdU-s8Y8-xGib2s � PV Status � � � � � � allocatable
� Total PE / Free PE � �539 / 0� PV Name
/dev/disk/by-id/scsi-360060480000290300618533030313033� PV UUID � � � � � � � uSasZ1-96rT-ngGN-Wfcr-fBNg-ceM0-GaccVU � PV Status � � � � � � allocatable
� Total PE / Free PE � �539 / 0� PV Name
/dev/disk/by-id/scsi-360060480000290300618533030313031� PV UUID � � � � � � � R15yAf-t1YO-Z0Dx-4n2G-oTyD-Secp-2igMJc � PV Status � � � � � � allocatable
� Total PE / Free PE � �539 / 0� PV Name
/dev/disk/by-id/scsi-360060480000290300618533030304646� PV UUID � � � � � � � nrhhx1-7AxM-VmVv-sRY5-TLR7-UAEE-wBUIMB � PV Status � � � � � � allocatable
� Total PE / Free PE � �539 / 0� PV Name
/dev/disk/by-id/scsi-360060480000290300618533030304644� PV UUID � � � � � � � ctz8rd-ew58-0pU8-FssR-x9pR-KSA9-mI4flw � PV Status � � � � � � allocatable
� Total PE / Free PE � �539 / 0I want to export this volume group and inport it again using multipathing. �I have configured the multipathing thus, �# multipath -ll
dm-6_010F (360060480000290300618533030313046) dm-6 EMC,SYMMETRIX [size=17G][features=0][hwhandler=0]
\_ round-robin 0 [prio=2][active]
�\_ 0:0:0:31 sdx � � � �65:112 [active][ready]
�\_ 1:0:0:31 sdk � � � �8:160 �[active][ready] dm-17_0012 (360060480000290300618533030303132) dm-17 EMC,SYMMETRIX [size=4.7M][features=0][hwhandler=0]
\_ round-robin 0 [prio=2][active]
�\_ 0:0:0:0 �sdn � � � �8:208 �[active][ready]
�\_ 1:0:0:0 �sda � � � �8:0 � �[active][ready] dm-13_0103 (360060480000290300618533030313033) dm-13 EMC,SYMMETRIX [size=17G][features=0][hwhandler=0]
\_ round-robin 0 [prio=2][active]
�\_ 0:0:0:25 sdr � � � �65:16 �[active][ready]
�\_ 1:0:0:25 sde � � � �8:64 � [active][ready] dm-10_0109 (360060480000290300618533030313039) dm-10 EMC,SYMMETRIX [size=17G][features=0][hwhandler=0]
\_ round-robin 0 [prio=2][active]
�\_ 0:0:0:28 sdu � � � �65:64 �[active][ready]
�\_ 1:0:0:28 sdh � � � �8:112 �[active][ready] dm-14_0101 (360060480000290300618533030313031) dm-14 EMC,SYMMETRIX [size=17G][features=0][hwhandler=0]
\_ round-robin 0 [prio=2][active]
�\_ 0:0:0:24 sdq � � � �65:0 � [active][ready]
�\_ 1:0:0:24 sdd � � � �8:48 � [active][ready] dm-8_010D (360060480000290300618533030313044) dm-8 EMC,SYMMETRIX [size=17G][features=0][hwhandler=0]
\_ round-robin 0 [prio=2][active]
�\_ 0:0:0:30 sdw � � � �65:96 �[active][ready]
�\_ 1:0:0:30 sdj � � � �8:144 �[active][ready] dm-15_00FF (360060480000290300618533030304646) dm-15 EMC,SYMMETRIX [size=17G][features=0][hwhandler=0]
\_ round-robin 0 [prio=2][active]
�\_ 0:0:0:23 sdp � � � �8:240 �[active][ready]
�\_ 1:0:0:23 sdc � � � �8:32 � [active][ready] dm-11_0107 (360060480000290300618533030313037) dm-11 EMC,SYMMETRIX [size=17G][features=0][hwhandler=0]
\_ round-robin 0 [prio=2][active]
�\_ 0:0:0:27 sdt � � � �65:48 �[active][ready]
�\_ 1:0:0:27 sdg � � � �8:96 � [active][ready] dm-4_0113 (360060480000290300618533030313133) dm-4 EMC,SYMMETRIX [size=17G][features=0][hwhandler=0]
\_ round-robin 0 [prio=2][active]
�\_ 0:0:0:33 sdz � � � �65:144 [active][ready]
�\_ 1:0:0:33 sdm � � � �8:192 �[active][ready] dm-9_010B (360060480000290300618533030313042) dm-9 EMC,SYMMETRIX [size=17G][features=0][hwhandler=0]
\_ round-robin 0 [prio=2][active]
�\_ 0:0:0:29 sdv � � � �65:80 �[active][ready]
�\_ 1:0:0:29 sdi � � � �8:128 �[active][ready] dm-16_00FD (360060480000290300618533030304644) dm-16 EMC,SYMMETRIX [size=17G][features=0][hwhandler=0]
\_ round-robin 0 [prio=2][active]
�\_ 0:0:0:22 sdo � � � �8:224 �[active][ready]
�\_ 1:0:0:22 sdb � � � �8:16 � [active][ready] dm-12_0105 (360060480000290300618533030313035) dm-12 EMC,SYMMETRIX [size=17G][features=0][hwhandler=0]
\_ round-robin 0 [prio=2][active]
�\_ 0:0:0:26 sds � � � �65:32 �[active][ready]
�\_ 1:0:0:26 sdf � � � �8:80 � [active][ready] dm-5_0111 (360060480000290300618533030313131) dm-5 EMC,SYMMETRIX [size=17G][features=0][hwhandler=0]
\_ round-robin 0 [prio=2][active]
�\_ 0:0:0:32 sdy � � � �65:128 [active][ready]
�\_ 1:0:0:32 sdl � � � �8:176 �[active][ready]Device mapper reports this:
# dmsetup ls dm-6_010F � �(253, 6) dm-17_0012 � �(253, 17) dm-13_0103 � �(253, 13) dm-10_0109 � �(253, 10) vg00-app052 � �(253, 3) vg00-xen � �(253, 2) vg00-usr � �(253, 0) vg00-var � �(253, 1) dm-14_0101 � �(253, 14) dm-8_010D � �(253, 8) dm-15_00FF � �(253, 15) dm-11_0107 � �(253, 11) dm-4_0113 � �(253, 4) vg_mds-lvol_mds � �(253, 7) dm-9_010B � �(253, 9) dm-16_00FD � �(253, 16) dm-12_0105 � �(253, 12) dm-5_0111 � �(253, 5)What I do not understand is that surly when I perform a vgscan how will it decide to query only the devices presented from the multipathd, and ignore those presented via the dev/disk/by-id/scsi-nnnnnnnnnn? �Won't it see two
vg_mdsvolumes instead of only those volumes that lie on the multipathed discs, which are the same pshycial discs as the disk/by-id?My plan of action is currently:
� � vgchange -a nvg_mds
� � vgexport -m/tmp/vg_mds.mapmds
� � vgexport -f/tmp/vg_mds.pvmds
� � vgscan
� � vgchange -y avg_mds
� � vgimportvg_mds/*OR instead do it the long way on the next line* �/ � � � � vgscan
� � � � mkdir/dev/vg_mds
� � � � mknod/dev/vg_mds/groupc 64 0xNN0000
� � � � vgimport -v -s -m/tmp/vg_mds.map/dev/vg_mdsI do not see how to tell it to ignore the non-multipathed disc, or has multipathd or LVM have some preference for mutlipath discs over non-multipathed discs, and if so then what is the logic behind the decision?
Any help to further my understanding would be gratefully appreciated.
Quoted 9 lines
Best wishes, S.
PS. I am using SLES, but this was the only mailinglist I found for LVM so I subscribed to it. �I think that LVM and multipathd implementations are reasonably similar across Linux distos. Ergo concepts here are applicable to Suse. �The kernel I am using is a xen enabled host (not a guest): 2.6.16.60-0.27-xen #1 SMP.
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Thank-you Bren for the info., I am unsure how to specify the preferred_devices using the muttipath:
Should it be:
preferred_names = [ "^/dev/dm-*/" , "^/dev/cciss/" ]
so that it uses these discs :/dev/cciss/c0d0p4 (internal disc)
dm-6_010F (multipathd alias for EMC disc)
dm-17_0012 (multipathd alias for EMC disc)
dm-13_0103 (multipathd alias for EMC disc)
dm-10_0109 (multipathd alias for EMC disc)
The EMC discs are listed under /dev as :
# ls -l /dev/dm-? brw-r----- 1 root disk 253, 0 Oct 26 14:44 /dev/dm-0 brw-r----- 1 root disk 253, 1 Oct 26 14:44 /dev/dm-1 brw-r----- 1 root disk 253, 2 Oct 26 14:44 /dev/dm-2 brw-r----- 1 root disk 253, 3 Oct 30 10:16 /dev/dm-3 brw-r----- 1 root disk 253, 4 Dec 4 11:47 /dev/dm-4 brw-r----- 1 root disk 253, 5 Dec 4 11:47 /dev/dm-5 brw-r----- 1 root disk 253, 6 Dec 4 11:47 /dev/dm-6 brw-r----- 1 root disk 253, 7 Oct 26 14:44 /dev/dm-7 brw-r----- 1 root disk 253, 8 Dec 4 11:47 /dev/dm-8 brw-r----- 1 root disk 253, 9 Dec 4 11:47 /dev/dm-9
...but I do not see /dev/dm-6_010F.
S.
Quoted 302 lines · brem belguebli
Hi,
see man 5 lvm.conf there is an option called
preferred_nameswhich is well explainedIt'll instruct lvm to use the
preferred_namesyou configured in the lvm.conf file if they existie :
preferred_names= "/dev/mpath/" will use/dev/mpath/XXXinstead of/dev/mapper/XXX2009/12/30 Simon Loewenthal/NL/Tele2 <[email protected]>:
Quoted 274 lines
I don't think this original Email made it through to the list, but I think I have found an solution:
In lvm.conf there is this line,
filter = [ "r|/dev/.*/by-path/.*|", "r|/dev/.*/by-id/.*|", "a/.*/" ]If I remove the portion "r|/dev/.*/by-id/.*|", so it is rewritten as, filter = [ "r|/dev/.*/by-path/.*|", "a/.*/" ]
...then it ought to ignore the device,/dev/disk/by-id/scsi-360060480000290300618533030313133Is this correct?
S.
--
Simon Loewenthal/Tele2Quoted 234 lines · Simon Loewenthal/NL/Tele2 wrote:
Dear all,
I have a volume group that is currently using discs directly
presented from EMC e.g/dev/disk/by-id/scsi-360060480000290300618533030313042.An lvdisplay -v shows these PVs:
# vgdisplay -v vg_mds Using volume group(s) on command line Finding volume group "vg_mds" --- Volume group --- VG Name vg_mds System ID Format lvm2 Metadata Areas 12 Metadata Sequence No 4 VG Access read/write VG Status resizable MAX LV 0 Cur LV 1 Open LV 1 Max PV 0 Cur PV 12 Act PV 12 VG Size 202.12 GB PE Size 32.00 MB Total PE 6468 Alloc PE / Size 6468 / 202.12 GB Free PE / Size 0 / 0 VG UUID Wnk1a8-xdVf-RorP-ZxPE-Z3D9-5fp1-2o4hHs--- Logical volume ---
LV Name /dev/vg_mds/lvol_mds VG Name vg_mds LV UUID TErCZW-senu-YR3k-I25n-Tqk9-BK2k-3mQY3S LV Write Access read/write LV Status available # open 1 LV Size 202.12 GB Current LE 6468 Segments 12 Allocation inherit Read ahead sectors 0 Block device 253:7--- Physical volumes ---
PV Name/dev/disk/by-id/scsi-360060480000290300618533030313133PV UUID 255V1X-uMZp-Lod1-3jsa-cCGd-JaNZ-v0dEXn PV Status allocatable Total PE / Free PE 539 / 0PV Name
/dev/disk/by-id/scsi-360060480000290300618533030313131PV UUID RU5WZK-G3hY-lXCD-F6Kj-PcJA-DcbE-iV17P7 PV Status allocatable Total PE / Free PE 539 / 0PV Name
/dev/disk/by-id/scsi-360060480000290300618533030313046PV UUID c3DVym-lzdw-MgS6-acQI-BcUD-UOGq-iG6hSe PV Status allocatable Total PE / Free PE 539 / 0PV Name
/dev/disk/by-id/scsi-360060480000290300618533030313044PV UUID d7VD54-KmXZ-t8eX-dvph-9lSp-ym03-Lc62sI PV Status allocatable Total PE / Free PE 539 / 0PV Name
/dev/disk/by-id/scsi-360060480000290300618533030313042PV UUID n32oAY-soe3-odYI-SAFQ-yM7v-FRaw-e9hS63 PV Status allocatable Total PE / Free PE 539 / 0PV Name
/dev/disk/by-id/scsi-360060480000290300618533030313039PV UUID hT2hZ7-XAZr-ZUte-rzLV-kwFX-Jtih-K3OgZe PV Status allocatable Total PE / Free PE 539 / 0PV Name
/dev/disk/by-id/scsi-360060480000290300618533030313037PV UUID ut4fEx-R0c2-lA4y-qS3F-SYfp-Chuz-2SrvTo PV Status allocatable Total PE / Free PE 539 / 0PV Name
/dev/disk/by-id/scsi-360060480000290300618533030313035PV UUID BMJ8LA-b0L7-aAoK-4WqG-MLdU-s8Y8-xGib2s PV Status allocatable Total PE / Free PE 539 / 0PV Name
/dev/disk/by-id/scsi-360060480000290300618533030313033PV UUID uSasZ1-96rT-ngGN-Wfcr-fBNg-ceM0-GaccVU PV Status allocatable Total PE / Free PE 539 / 0PV Name
/dev/disk/by-id/scsi-360060480000290300618533030313031PV UUID R15yAf-t1YO-Z0Dx-4n2G-oTyD-Secp-2igMJc PV Status allocatable Total PE / Free PE 539 / 0PV Name
/dev/disk/by-id/scsi-360060480000290300618533030304646PV UUID nrhhx1-7AxM-VmVv-sRY5-TLR7-UAEE-wBUIMB PV Status allocatable Total PE / Free PE 539 / 0PV Name
/dev/disk/by-id/scsi-360060480000290300618533030304644PV UUID ctz8rd-ew58-0pU8-FssR-x9pR-KSA9-mI4flw PV Status allocatable Total PE / Free PE 539 / 0I want to export this volume group and inport it again using multipathing. I have configured the multipathing thus,
# multipath -ll dm-6_010F (360060480000290300618533030313046) dm-6 EMC,SYMMETRIX [size=17G][features=0][hwhandler=0] \_ round-robin 0 [prio=2][active] \_ 0:0:0:31 sdx 65:112 [active][ready] \_ 1:0:0:31 sdk 8:160 [active][ready] dm-17_0012 (360060480000290300618533030303132) dm-17 EMC,SYMMETRIX [size=4.7M][features=0][hwhandler=0] \_ round-robin 0 [prio=2][active] \_ 0:0:0:0 sdn 8:208 [active][ready] \_ 1:0:0:0 sda 8:0 [active][ready] dm-13_0103 (360060480000290300618533030313033) dm-13 EMC,SYMMETRIX [size=17G][features=0][hwhandler=0] \_ round-robin 0 [prio=2][active] \_ 0:0:0:25 sdr 65:16 [active][ready] \_ 1:0:0:25 sde 8:64 [active][ready] dm-10_0109 (360060480000290300618533030313039) dm-10 EMC,SYMMETRIX [size=17G][features=0][hwhandler=0] \_ round-robin 0 [prio=2][active] \_ 0:0:0:28 sdu 65:64 [active][ready] \_ 1:0:0:28 sdh 8:112 [active][ready] dm-14_0101 (360060480000290300618533030313031) dm-14 EMC,SYMMETRIX [size=17G][features=0][hwhandler=0] \_ round-robin 0 [prio=2][active] \_ 0:0:0:24 sdq 65:0 [active][ready] \_ 1:0:0:24 sdd 8:48 [active][ready] dm-8_010D (360060480000290300618533030313044) dm-8 EMC,SYMMETRIX [size=17G][features=0][hwhandler=0] \_ round-robin 0 [prio=2][active] \_ 0:0:0:30 sdw 65:96 [active][ready] \_ 1:0:0:30 sdj 8:144 [active][ready] dm-15_00FF (360060480000290300618533030304646) dm-15 EMC,SYMMETRIX [size=17G][features=0][hwhandler=0] \_ round-robin 0 [prio=2][active] \_ 0:0:0:23 sdp 8:240 [active][ready] \_ 1:0:0:23 sdc 8:32 [active][ready] dm-11_0107 (360060480000290300618533030313037) dm-11 EMC,SYMMETRIX [size=17G][features=0][hwhandler=0] \_ round-robin 0 [prio=2][active] \_ 0:0:0:27 sdt 65:48 [active][ready] \_ 1:0:0:27 sdg 8:96 [active][ready] dm-4_0113 (360060480000290300618533030313133) dm-4 EMC,SYMMETRIX [size=17G][features=0][hwhandler=0] \_ round-robin 0 [prio=2][active] \_ 0:0:0:33 sdz 65:144 [active][ready] \_ 1:0:0:33 sdm 8:192 [active][ready] dm-9_010B (360060480000290300618533030313042) dm-9 EMC,SYMMETRIX [size=17G][features=0][hwhandler=0] \_ round-robin 0 [prio=2][active] \_ 0:0:0:29 sdv 65:80 [active][ready] \_ 1:0:0:29 sdi 8:128 [active][ready] dm-16_00FD (360060480000290300618533030304644) dm-16 EMC,SYMMETRIX [size=17G][features=0][hwhandler=0] \_ round-robin 0 [prio=2][active] \_ 0:0:0:22 sdo 8:224 [active][ready] \_ 1:0:0:22 sdb 8:16 [active][ready] dm-12_0105 (360060480000290300618533030313035) dm-12 EMC,SYMMETRIX [size=17G][features=0][hwhandler=0] \_ round-robin 0 [prio=2][active] \_ 0:0:0:26 sds 65:32 [active][ready] \_ 1:0:0:26 sdf 8:80 [active][ready] dm-5_0111 (360060480000290300618533030313131) dm-5 EMC,SYMMETRIX [size=17G][features=0][hwhandler=0] \_ round-robin 0 [prio=2][active] \_ 0:0:0:32 sdy 65:128 [active][ready] \_ 1:0:0:32 sdl 8:176 [active][ready]Device mapper reports this:
# dmsetup ls dm-6_010F (253, 6) dm-17_0012 (253, 17) dm-13_0103 (253, 13) dm-10_0109 (253, 10) vg00-app052 (253, 3) vg00-xen (253, 2) vg00-usr (253, 0) vg00-var (253, 1) dm-14_0101 (253, 14) dm-8_010D (253, 8) dm-15_00FF (253, 15) dm-11_0107 (253, 11) dm-4_0113 (253, 4) vg_mds-lvol_mds (253, 7) dm-9_010B (253, 9) dm-16_00FD (253, 16) dm-12_0105 (253, 12) dm-5_0111 (253, 5)What I do not understand is that surly when I perform a vgscan how will it decide to query only the devices presented from the multipathd, and ignore those presented via the dev/disk/by-id/scsi-nnnnnnnnnn? Won't it see two
vg_mdsvolumes instead of only those volumes that lie on the multipathed discs, which are the same pshycial discs as the disk/by-id?My plan of action is currently:
vgchange -a nvg_mds
vgexport -m/tmp/vg_mds.mapmds
vgexport -f/tmp/vg_mds.pvmds
vgscan
vgchange -y avg_mds
vgimportvg_mds/*OR instead do it the long way on the next line* /
vgscan
mkdir/dev/vg_mds
mknod/dev/vg_mds/groupc 64 0xNN0000
vgimport -v -s -m/tmp/vg_mds.map/dev/vg_mdsI do not see how to tell it to ignore the non-multipathed disc, or has multipathd or LVM have some preference for mutlipath discs over non-multipathed discs, and if so then what is the logic behind the decision?
Any help to further my understanding would be gratefully appreciated.
Quoted 10 lines
Best wishes, S.
PS. I am using SLES, but this was the only mailinglist I found for LVM so I subscribed to it. I think that LVM and multipathd implementations are reasonably similar across Linux distos. Ergo concepts here are applicable to Suse. The kernel I am using is a xen enabled host (not a guest): 2.6.16.60-0.27-xen #1 SMP.
--
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Sorry, no, I think it should have been,
preferred_names = [ "^/dev/mapper/" , "^/dev/cciss/" ]
for these in /dev/mapper:
# ls -l /dev/mapper total 0 lrwxrwxrwx 1 root root 16 Oct 26 14:44 control -> ../device-mapper brw------- 1 root root 253, 10 Dec 4 11:47 dm-10_0109 brw------- 1 root root 253, 11 Dec 4 11:47 dm-11_0107 brw------- 1 root root 253, 12 Dec 4 11:47 dm-12_0105 brw------- 1 root root 253, 13 Dec 4 11:47 dm-13_0103 brw------- 1 root root 253, 14 Dec 4 11:47 dm-14_0101 brw------- 1 root root 253, 15 Dec 4 11:47 dm-15_00FF brw------- 1 root root 253, 16 Dec 4 11:47 dm-16_00FD brw------- 1 root root 253, 17 Dec 4 11:47 dm-17_0012 brw------- 1 root root 253, 4 Dec 4 11:47 dm-4_0113 brw------- 1 root root 253, 5 Dec 4 11:47 dm-5_0111 brw------- 1 root root 253, 6 Dec 4 11:47 dm-6_010F brw------- 1 root root 253, 8 Dec 4 11:47 dm-8_010D brw------- 1 root root 253, 9 Dec 4 11:47 dm-9_010B brw------- 1 root root 253, 3 Oct 30 10:17 vg00-app052 brw------- 1 root root 253, 0 Oct 26 14:45 vg00-usr brw------- 1 root root 253, 1 Oct 26 14:45 vg00-var brw------- 1 root root 253, 2 Oct 26 14:45 vg00-xen brw------- 1 root root 253, 7 Oct 26 14:44 vg_mds-lvol_mds
Quoted 344 lines · Simon Loewenthal/NL/Tele2 wrote:
Thank-you Bren for the info., I am unsure how to specify the
preferred_devicesusing the muttipath:
Should it be:
preferred_names= [ "^/dev/dm-*/" , "^/dev/cciss/" ]so that it uses these discs :
/dev/cciss/c0d0p4(internal disc)
dm-6_010F (multipathd alias for EMC disc)
dm-17_0012 (multipathd alias for EMC disc)
dm-13_0103 (multipathd alias for EMC disc)
dm-10_0109 (multipathd alias for EMC disc)The EMC discs are listed under /dev as :
# ls -l /dev/dm-? brw-r----- 1 root disk 253, 0 Oct 26 14:44 /dev/dm-0 brw-r----- 1 root disk 253, 1 Oct 26 14:44 /dev/dm-1 brw-r----- 1 root disk 253, 2 Oct 26 14:44 /dev/dm-2 brw-r----- 1 root disk 253, 3 Oct 30 10:16 /dev/dm-3 brw-r----- 1 root disk 253, 4 Dec 4 11:47 /dev/dm-4 brw-r----- 1 root disk 253, 5 Dec 4 11:47 /dev/dm-5 brw-r----- 1 root disk 253, 6 Dec 4 11:47 /dev/dm-6 brw-r----- 1 root disk 253, 7 Oct 26 14:44 /dev/dm-7 brw-r----- 1 root disk 253, 8 Dec 4 11:47 /dev/dm-8 brw-r----- 1 root disk 253, 9 Dec 4 11:47 /dev/dm-9...but I do not see
/dev/dm-6_010F.S.
Quoted 306 lines · brem belguebli
Hi,
see man 5 lvm.conf there is an option called
preferred_nameswhich is well explainedIt'll instruct lvm to use the
preferred_namesyou configured in the lvm.conf file if they existie :
preferred_names= "/dev/mpath/" will use/dev/mpath/XXXinstead of/dev/mapper/XXX2009/12/30 Simon Loewenthal/NL/Tele2 <[email protected]>:
Quoted 276 lines
I don't think this original Email made it through to the list, but I think I have found an solution:
In lvm.conf there is this line,
filter = [ "r|/dev/.*/by-path/.*|", "r|/dev/.*/by-id/.*|", "a/.*/" ]If I remove the portion "r|/dev/.*/by-id/.*|", so it is rewritten as, filter = [ "r|/dev/.*/by-path/.*|", "a/.*/" ]
...then it ought to ignore the device,/dev/disk/by-id/scsi-360060480000290300618533030313133Is this correct?
S.
--
Simon Loewenthal/Tele2Quoted 234 lines · Simon Loewenthal/NL/Tele2 wrote:
Dear all,
I have a volume group that is currently using discs directly
presented from EMC e.g/dev/disk/by-id/scsi-360060480000290300618533030313042.An lvdisplay -v shows these PVs:
# vgdisplay -v vg_mds Using volume group(s) on command line Finding volume group "vg_mds" --- Volume group --- VG Name vg_mds System ID Format lvm2 Metadata Areas 12 Metadata Sequence No 4 VG Access read/write VG Status resizable MAX LV 0 Cur LV 1 Open LV 1 Max PV 0 Cur PV 12 Act PV 12 VG Size 202.12 GB PE Size 32.00 MB Total PE 6468 Alloc PE / Size 6468 / 202.12 GB Free PE / Size 0 / 0 VG UUID Wnk1a8-xdVf-RorP-ZxPE-Z3D9-5fp1-2o4hHs--- Logical volume ---
LV Name /dev/vg_mds/lvol_mds VG Name vg_mds LV UUID TErCZW-senu-YR3k-I25n-Tqk9-BK2k-3mQY3S LV Write Access read/write LV Status available # open 1 LV Size 202.12 GB Current LE 6468 Segments 12 Allocation inherit Read ahead sectors 0 Block device 253:7--- Physical volumes ---
PV Name/dev/disk/by-id/scsi-360060480000290300618533030313133PV UUID 255V1X-uMZp-Lod1-3jsa-cCGd-JaNZ-v0dEXn PV Status allocatable Total PE / Free PE 539 / 0PV Name
/dev/disk/by-id/scsi-360060480000290300618533030313131PV UUID RU5WZK-G3hY-lXCD-F6Kj-PcJA-DcbE-iV17P7 PV Status allocatable Total PE / Free PE 539 / 0PV Name
/dev/disk/by-id/scsi-360060480000290300618533030313046PV UUID c3DVym-lzdw-MgS6-acQI-BcUD-UOGq-iG6hSe PV Status allocatable Total PE / Free PE 539 / 0PV Name
/dev/disk/by-id/scsi-360060480000290300618533030313044PV UUID d7VD54-KmXZ-t8eX-dvph-9lSp-ym03-Lc62sI PV Status allocatable Total PE / Free PE 539 / 0PV Name
/dev/disk/by-id/scsi-360060480000290300618533030313042PV UUID n32oAY-soe3-odYI-SAFQ-yM7v-FRaw-e9hS63 PV Status allocatable Total PE / Free PE 539 / 0PV Name
/dev/disk/by-id/scsi-360060480000290300618533030313039PV UUID hT2hZ7-XAZr-ZUte-rzLV-kwFX-Jtih-K3OgZe PV Status allocatable Total PE / Free PE 539 / 0PV Name
/dev/disk/by-id/scsi-360060480000290300618533030313037PV UUID ut4fEx-R0c2-lA4y-qS3F-SYfp-Chuz-2SrvTo PV Status allocatable Total PE / Free PE 539 / 0PV Name
/dev/disk/by-id/scsi-360060480000290300618533030313035PV UUID BMJ8LA-b0L7-aAoK-4WqG-MLdU-s8Y8-xGib2s PV Status allocatable Total PE / Free PE 539 / 0PV Name
/dev/disk/by-id/scsi-360060480000290300618533030313033PV UUID uSasZ1-96rT-ngGN-Wfcr-fBNg-ceM0-GaccVU PV Status allocatable Total PE / Free PE 539 / 0PV Name
/dev/disk/by-id/scsi-360060480000290300618533030313031PV UUID R15yAf-t1YO-Z0Dx-4n2G-oTyD-Secp-2igMJc PV Status allocatable Total PE / Free PE 539 / 0PV Name
/dev/disk/by-id/scsi-360060480000290300618533030304646PV UUID nrhhx1-7AxM-VmVv-sRY5-TLR7-UAEE-wBUIMB PV Status allocatable Total PE / Free PE 539 / 0PV Name
/dev/disk/by-id/scsi-360060480000290300618533030304644PV UUID ctz8rd-ew58-0pU8-FssR-x9pR-KSA9-mI4flw PV Status allocatable Total PE / Free PE 539 / 0I want to export this volume group and inport it again using multipathing. I have configured the multipathing thus,
# multipath -ll dm-6_010F (360060480000290300618533030313046) dm-6 EMC,SYMMETRIX [size=17G][features=0][hwhandler=0] \_ round-robin 0 [prio=2][active] \_ 0:0:0:31 sdx 65:112 [active][ready] \_ 1:0:0:31 sdk 8:160 [active][ready] dm-17_0012 (360060480000290300618533030303132) dm-17 EMC,SYMMETRIX [size=4.7M][features=0][hwhandler=0] \_ round-robin 0 [prio=2][active] \_ 0:0:0:0 sdn 8:208 [active][ready] \_ 1:0:0:0 sda 8:0 [active][ready] dm-13_0103 (360060480000290300618533030313033) dm-13 EMC,SYMMETRIX [size=17G][features=0][hwhandler=0] \_ round-robin 0 [prio=2][active] \_ 0:0:0:25 sdr 65:16 [active][ready] \_ 1:0:0:25 sde 8:64 [active][ready] dm-10_0109 (360060480000290300618533030313039) dm-10 EMC,SYMMETRIX [size=17G][features=0][hwhandler=0] \_ round-robin 0 [prio=2][active] \_ 0:0:0:28 sdu 65:64 [active][ready] \_ 1:0:0:28 sdh 8:112 [active][ready] dm-14_0101 (360060480000290300618533030313031) dm-14 EMC,SYMMETRIX [size=17G][features=0][hwhandler=0] \_ round-robin 0 [prio=2][active] \_ 0:0:0:24 sdq 65:0 [active][ready] \_ 1:0:0:24 sdd 8:48 [active][ready] dm-8_010D (360060480000290300618533030313044) dm-8 EMC,SYMMETRIX [size=17G][features=0][hwhandler=0] \_ round-robin 0 [prio=2][active] \_ 0:0:0:30 sdw 65:96 [active][ready] \_ 1:0:0:30 sdj 8:144 [active][ready] dm-15_00FF (360060480000290300618533030304646) dm-15 EMC,SYMMETRIX [size=17G][features=0][hwhandler=0] \_ round-robin 0 [prio=2][active] \_ 0:0:0:23 sdp 8:240 [active][ready] \_ 1:0:0:23 sdc 8:32 [active][ready] dm-11_0107 (360060480000290300618533030313037) dm-11 EMC,SYMMETRIX [size=17G][features=0][hwhandler=0] \_ round-robin 0 [prio=2][active] \_ 0:0:0:27 sdt 65:48 [active][ready] \_ 1:0:0:27 sdg 8:96 [active][ready] dm-4_0113 (360060480000290300618533030313133) dm-4 EMC,SYMMETRIX [size=17G][features=0][hwhandler=0] \_ round-robin 0 [prio=2][active] \_ 0:0:0:33 sdz 65:144 [active][ready] \_ 1:0:0:33 sdm 8:192 [active][ready] dm-9_010B (360060480000290300618533030313042) dm-9 EMC,SYMMETRIX [size=17G][features=0][hwhandler=0] \_ round-robin 0 [prio=2][active] \_ 0:0:0:29 sdv 65:80 [active][ready] \_ 1:0:0:29 sdi 8:128 [active][ready] dm-16_00FD (360060480000290300618533030304644) dm-16 EMC,SYMMETRIX [size=17G][features=0][hwhandler=0] \_ round-robin 0 [prio=2][active] \_ 0:0:0:22 sdo 8:224 [active][ready] \_ 1:0:0:22 sdb 8:16 [active][ready] dm-12_0105 (360060480000290300618533030313035) dm-12 EMC,SYMMETRIX [size=17G][features=0][hwhandler=0] \_ round-robin 0 [prio=2][active] \_ 0:0:0:26 sds 65:32 [active][ready] \_ 1:0:0:26 sdf 8:80 [active][ready] dm-5_0111 (360060480000290300618533030313131) dm-5 EMC,SYMMETRIX [size=17G][features=0][hwhandler=0] \_ round-robin 0 [prio=2][active] \_ 0:0:0:32 sdy 65:128 [active][ready] \_ 1:0:0:32 sdl 8:176 [active][ready]Device mapper reports this:
# dmsetup ls dm-6_010F (253, 6) dm-17_0012 (253, 17) dm-13_0103 (253, 13) dm-10_0109 (253, 10) vg00-app052 (253, 3) vg00-xen (253, 2) vg00-usr (253, 0) vg00-var (253, 1) dm-14_0101 (253, 14) dm-8_010D (253, 8) dm-15_00FF (253, 15) dm-11_0107 (253, 11) dm-4_0113 (253, 4) vg_mds-lvol_mds (253, 7) dm-9_010B (253, 9) dm-16_00FD (253, 16) dm-12_0105 (253, 12) dm-5_0111 (253, 5)What I do not understand is that surly when I perform a vgscan how will it decide to query only the devices presented from the multipathd, and ignore those presented via the dev/disk/by-id/scsi-nnnnnnnnnn? Won't it see two
vg_mdsvolumes instead of only those volumes that lie on the multipathed discs, which are the same pshycial discs as the disk/by-id?My plan of action is currently:
vgchange -a nvg_mds
vgexport -m/tmp/vg_mds.mapmds
vgexport -f/tmp/vg_mds.pvmds
vgscan
vgchange -y avg_mds
vgimportvg_mds/*OR instead do it the long way on the next line* /
vgscan
mkdir/dev/vg_mds
mknod/dev/vg_mds/groupc 64 0xNN0000
vgimport -v -s -m/tmp/vg_mds.map/dev/vg_mdsI do not see how to tell it to ignore the non-multipathed disc, or has multipathd or LVM have some preference for mutlipath discs over non-multipathed discs, and if so then what is the logic behind the decision?
Any help to further my understanding would be gratefully appreciated.
Quoted 11 lines
Best wishes, S.
PS. I am using SLES, but this was the only mailinglist I found for LVM so I subscribed to it. I think that LVM and multipathd implementations are reasonably similar across Linux distos. Ergo concepts here are applicable to Suse. The kernel I am using is a xen enabled host (not a guest): 2.6.16.60-0.27-xen #1 SMP.
--
Simon Loewenthal/Tele2******** IMPORTANT NOTICE ********
Please repect the X-Reply to klunky.co.uk. PGP available0xD86A5A17.
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This e-mail (including any attachments) may contain information that is confidential or otherwise protected from disclosure and it is intended only for the addressees. If you are not the intended recipient, please note that any copying, distribution or other use of information contained in this e-mail (and its attachments) is not allowed. If you have received this e-mail in error, kindly notify us immediately by telephone or e-mail and delete the message (including any attachments) from your system. Please note that e-mail messages may contain computer viruses or other defects, may not be accurately replicated on other systems, or may be subject of unauthorized interception or other interference without the knowledge of sender or recipient. Tele2 only send and receive e-mails on the basis that Tele2 is not responsible for any such computer viruses, corruption or other interference or any consequences thereof. It ought to be obvious that my views do not represent my employer's views.Quoted 8 lines
_______________________________________________
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[email protected]
https://www.redhat.com/mailman/listinfo/linux-lvm
read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/_______________________________________________
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https://www.redhat.com/mailman/listinfo/linux-lvm
read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
What you have to be aware of is that /dev/dm names are volatile and can change across reboots as are /dev/sd names, never use them directly.
If you are using device-mapper-multipath (not emcpowerpath) there is a "user_friendly_names" boolean setting in /etc/multipath.conf that would give you names such as /dev/mpath/mpath0 is set to yes.
If set to no, it would give you names such as /dev/mpath/UUID.
Both namings are persistent (stable across reboots) as multipath will base its binding on the disk UUID.
see man multipath.conf to have full options listing.
It allows you also to give custom names to devices by using the alias setting in multipath.conf.
The filter you applied (your previous email) just prevents "r/..." LVM to check and so activate the device names that you rejected.
Hope this'll help
2009/12/30 Simon Loewenthal/NL/Tele2 <[email protected]>:
Quoted 344 lines
Thank-you Bren for the info., I am unsure how to specify the
preferred_devicesusing the muttipath:
�Should it be:
preferred_names= [ "^/dev/dm-*/" , "^/dev/cciss/" ]so that it uses these discs :
/dev/cciss/c0d0p4�(internal disc)
dm-6_010F � � � (multipathd alias for EMC disc) dm-17_0012 � � �(multipathd alias for EMC disc) dm-13_0103 � � �(multipathd alias for EMC disc) dm-10_0109 � � �(multipathd alias for EMC disc)The EMC discs are listed under /dev as :
�# ls -l/dev/dm-?
brw-r----- 1 root disk 253, 0 Oct 26 14:44/dev/dm-0brw-r----- 1 root disk 253, 1 Oct 26 14:44/dev/dm-1brw-r----- 1 root disk 253, 2 Oct 26 14:44/dev/dm-2brw-r----- 1 root disk 253, 3 Oct 30 10:16/dev/dm-3brw-r----- 1 root disk 253, 4 Dec �4 11:47/dev/dm-4brw-r----- 1 root disk 253, 5 Dec �4 11:47/dev/dm-5brw-r----- 1 root disk 253, 6 Dec �4 11:47/dev/dm-6brw-r----- 1 root disk 253, 7 Oct 26 14:44/dev/dm-7brw-r----- 1 root disk 253, 8 Dec �4 11:47/dev/dm-8brw-r----- 1 root disk 253, 9 Dec �4 11:47/dev/dm-9...but I do not see
/dev/dm-6_010F.S.
Quoted 296 lines · brem belguebli
Hi,
see man 5 lvm.conf there is an option called
preferred_nameswhich is well explainedIt'll instruct lvm to use the
preferred_namesyou configured in the lvm.conf file if they existie :
preferred_names= "/dev/mpath/" will use/dev/mpath/XXXinstead of/dev/mapper/XXX2009/12/30 Simon Loewenthal/NL/Tele2 <[email protected]>:
Quoted 274 lines
I don't think this original Email made it through to the list, but I think I have found an solution:
In lvm.conf there is this line,
filter = [ "r|/dev/.*/by-path/.*|", "r|/dev/.*/by-id/.*|", "a/.*/" ]If I remove the portion "r|/dev/.*/by-id/.*|", so it is rewritten as, filter = [ "r|/dev/.*/by-path/.*|", "a/.*/" ]
...then it ought to ignore the device,/dev/disk/by-id/scsi-360060480000290300618533030313133Is this correct?
S.
--
Simon Loewenthal/Tele2Quoted 234 lines · Simon Loewenthal/NL/Tele2 wrote:
Dear all,
� � I have a volume group that is currently using discs directly presented from EMC e.g
/dev/disk/by-id/scsi-360060480000290300618533030313042.An lvdisplay -v shows these PVs:
# vgdisplay -v vg_mds � � Using volume group(s) on command line � � Finding volume group "vg_mds" � --- Volume group --- � VG Name � � � � � � � vg_mds � System ID � Format � � � � � � � �lvm2 � Metadata Areas � � � �12 � Metadata Sequence No �4 � VG Access � � � � � � read/write � VG Status � � � � � � resizable � MAX LV � � � � � � � �0 � Cur LV � � � � � � � �1 � Open LV � � � � � � � 1 � Max PV � � � � � � � �0 � Cur PV � � � � � � � �12 � Act PV � � � � � � � �12 � VG Size � � � � � � � 202.12 GB � PE Size � � � � � � � 32.00 MB � Total PE � � � � � � �6468 � Alloc PE / Size � � � 6468 / 202.12 GB � Free �PE / Size � � � 0 / 0 � VG UUID � � � � � � � Wnk1a8-xdVf-RorP-ZxPE-Z3D9-5fp1-2o4hHs� --- Logical volume ---
� LV Name � � � � � � � �/dev/vg_mds/lvol_mds
� VG Name � � � � � � � �vg_mds
� LV UUID � � � � � � � �TErCZW-senu-YR3k-I25n-Tqk9-BK2k-3mQY3S � LV Write Access � � � �read/write
� LV Status � � � � � � �available
� # open � � � � � � � � 1
� LV Size � � � � � � � �202.12 GB
� Current LE � � � � � � 6468
� Segments � � � � � � � 12
� Allocation � � � � � � inherit
� Read ahead sectors � � 0
� Block device � � � � � 253:7� --- Physical volumes ---
� PV Name/dev/disk/by-id/scsi-360060480000290300618533030313133� PV UUID � � � � � � � 255V1X-uMZp-Lod1-3jsa-cCGd-JaNZ-v0dEXn � PV Status � � � � � � allocatable
� Total PE / Free PE � �539 / 0� PV Name
/dev/disk/by-id/scsi-360060480000290300618533030313131� PV UUID � � � � � � � RU5WZK-G3hY-lXCD-F6Kj-PcJA-DcbE-iV17P7 � PV Status � � � � � � allocatable
� Total PE / Free PE � �539 / 0� PV Name
/dev/disk/by-id/scsi-360060480000290300618533030313046� PV UUID � � � � � � � c3DVym-lzdw-MgS6-acQI-BcUD-UOGq-iG6hSe � PV Status � � � � � � allocatable
� Total PE / Free PE � �539 / 0� PV Name
/dev/disk/by-id/scsi-360060480000290300618533030313044� PV UUID � � � � � � � d7VD54-KmXZ-t8eX-dvph-9lSp-ym03-Lc62sI � PV Status � � � � � � allocatable
� Total PE / Free PE � �539 / 0� PV Name
/dev/disk/by-id/scsi-360060480000290300618533030313042� PV UUID � � � � � � � n32oAY-soe3-odYI-SAFQ-yM7v-FRaw-e9hS63 � PV Status � � � � � � allocatable
� Total PE / Free PE � �539 / 0� PV Name
/dev/disk/by-id/scsi-360060480000290300618533030313039� PV UUID � � � � � � � hT2hZ7-XAZr-ZUte-rzLV-kwFX-Jtih-K3OgZe � PV Status � � � � � � allocatable
� Total PE / Free PE � �539 / 0� PV Name
/dev/disk/by-id/scsi-360060480000290300618533030313037� PV UUID � � � � � � � ut4fEx-R0c2-lA4y-qS3F-SYfp-Chuz-2SrvTo � PV Status � � � � � � allocatable
� Total PE / Free PE � �539 / 0� PV Name
/dev/disk/by-id/scsi-360060480000290300618533030313035� PV UUID � � � � � � � BMJ8LA-b0L7-aAoK-4WqG-MLdU-s8Y8-xGib2s � PV Status � � � � � � allocatable
� Total PE / Free PE � �539 / 0� PV Name
/dev/disk/by-id/scsi-360060480000290300618533030313033� PV UUID � � � � � � � uSasZ1-96rT-ngGN-Wfcr-fBNg-ceM0-GaccVU � PV Status � � � � � � allocatable
� Total PE / Free PE � �539 / 0� PV Name
/dev/disk/by-id/scsi-360060480000290300618533030313031� PV UUID � � � � � � � R15yAf-t1YO-Z0Dx-4n2G-oTyD-Secp-2igMJc � PV Status � � � � � � allocatable
� Total PE / Free PE � �539 / 0� PV Name
/dev/disk/by-id/scsi-360060480000290300618533030304646� PV UUID � � � � � � � nrhhx1-7AxM-VmVv-sRY5-TLR7-UAEE-wBUIMB � PV Status � � � � � � allocatable
� Total PE / Free PE � �539 / 0� PV Name
/dev/disk/by-id/scsi-360060480000290300618533030304644� PV UUID � � � � � � � ctz8rd-ew58-0pU8-FssR-x9pR-KSA9-mI4flw � PV Status � � � � � � allocatable
� Total PE / Free PE � �539 / 0I want to export this volume group and inport it again using multipathing. �I have configured the multipathing thus, �# multipath -ll
dm-6_010F (360060480000290300618533030313046) dm-6 EMC,SYMMETRIX [size=17G][features=0][hwhandler=0]
\_ round-robin 0 [prio=2][active]
�\_ 0:0:0:31 sdx � � � �65:112 [active][ready]
�\_ 1:0:0:31 sdk � � � �8:160 �[active][ready] dm-17_0012 (360060480000290300618533030303132) dm-17 EMC,SYMMETRIX [size=4.7M][features=0][hwhandler=0]
\_ round-robin 0 [prio=2][active]
�\_ 0:0:0:0 �sdn � � � �8:208 �[active][ready]
�\_ 1:0:0:0 �sda � � � �8:0 � �[active][ready] dm-13_0103 (360060480000290300618533030313033) dm-13 EMC,SYMMETRIX [size=17G][features=0][hwhandler=0]
\_ round-robin 0 [prio=2][active]
�\_ 0:0:0:25 sdr � � � �65:16 �[active][ready]
�\_ 1:0:0:25 sde � � � �8:64 � [active][ready] dm-10_0109 (360060480000290300618533030313039) dm-10 EMC,SYMMETRIX [size=17G][features=0][hwhandler=0]
\_ round-robin 0 [prio=2][active]
�\_ 0:0:0:28 sdu � � � �65:64 �[active][ready]
�\_ 1:0:0:28 sdh � � � �8:112 �[active][ready] dm-14_0101 (360060480000290300618533030313031) dm-14 EMC,SYMMETRIX [size=17G][features=0][hwhandler=0]
\_ round-robin 0 [prio=2][active]
�\_ 0:0:0:24 sdq � � � �65:0 � [active][ready]
�\_ 1:0:0:24 sdd � � � �8:48 � [active][ready] dm-8_010D (360060480000290300618533030313044) dm-8 EMC,SYMMETRIX [size=17G][features=0][hwhandler=0]
\_ round-robin 0 [prio=2][active]
�\_ 0:0:0:30 sdw � � � �65:96 �[active][ready]
�\_ 1:0:0:30 sdj � � � �8:144 �[active][ready] dm-15_00FF (360060480000290300618533030304646) dm-15 EMC,SYMMETRIX [size=17G][features=0][hwhandler=0]
\_ round-robin 0 [prio=2][active]
�\_ 0:0:0:23 sdp � � � �8:240 �[active][ready]
�\_ 1:0:0:23 sdc � � � �8:32 � [active][ready] dm-11_0107 (360060480000290300618533030313037) dm-11 EMC,SYMMETRIX [size=17G][features=0][hwhandler=0]
\_ round-robin 0 [prio=2][active]
�\_ 0:0:0:27 sdt � � � �65:48 �[active][ready]
�\_ 1:0:0:27 sdg � � � �8:96 � [active][ready] dm-4_0113 (360060480000290300618533030313133) dm-4 EMC,SYMMETRIX [size=17G][features=0][hwhandler=0]
\_ round-robin 0 [prio=2][active]
�\_ 0:0:0:33 sdz � � � �65:144 [active][ready]
�\_ 1:0:0:33 sdm � � � �8:192 �[active][ready] dm-9_010B (360060480000290300618533030313042) dm-9 EMC,SYMMETRIX [size=17G][features=0][hwhandler=0]
\_ round-robin 0 [prio=2][active]
�\_ 0:0:0:29 sdv � � � �65:80 �[active][ready]
�\_ 1:0:0:29 sdi � � � �8:128 �[active][ready] dm-16_00FD (360060480000290300618533030304644) dm-16 EMC,SYMMETRIX [size=17G][features=0][hwhandler=0]
\_ round-robin 0 [prio=2][active]
�\_ 0:0:0:22 sdo � � � �8:224 �[active][ready]
�\_ 1:0:0:22 sdb � � � �8:16 � [active][ready] dm-12_0105 (360060480000290300618533030313035) dm-12 EMC,SYMMETRIX [size=17G][features=0][hwhandler=0]
\_ round-robin 0 [prio=2][active]
�\_ 0:0:0:26 sds � � � �65:32 �[active][ready]
�\_ 1:0:0:26 sdf � � � �8:80 � [active][ready] dm-5_0111 (360060480000290300618533030313131) dm-5 EMC,SYMMETRIX [size=17G][features=0][hwhandler=0]
\_ round-robin 0 [prio=2][active]
�\_ 0:0:0:32 sdy � � � �65:128 [active][ready]
�\_ 1:0:0:32 sdl � � � �8:176 �[active][ready]Device mapper reports this:
# dmsetup ls dm-6_010F � �(253, 6) dm-17_0012 � �(253, 17) dm-13_0103 � �(253, 13) dm-10_0109 � �(253, 10) vg00-app052 � �(253, 3) vg00-xen � �(253, 2) vg00-usr � �(253, 0) vg00-var � �(253, 1) dm-14_0101 � �(253, 14) dm-8_010D � �(253, 8) dm-15_00FF � �(253, 15) dm-11_0107 � �(253, 11) dm-4_0113 � �(253, 4) vg_mds-lvol_mds � �(253, 7) dm-9_010B � �(253, 9) dm-16_00FD � �(253, 16) dm-12_0105 � �(253, 12) dm-5_0111 � �(253, 5)What I do not understand is that surly when I perform a vgscan how will it decide to query only the devices presented from the multipathd, and ignore those presented via the dev/disk/by-id/scsi-nnnnnnnnnn? �Won't it see two
vg_mdsvolumes instead of only those volumes that lie on the multipathed discs, which are the same pshycial discs as the disk/by-id?My plan of action is currently:
� � vgchange -a nvg_mds
� � vgexport -m/tmp/vg_mds.mapmds
� � vgexport -f/tmp/vg_mds.pvmds
� � vgscan
� � vgchange -y avg_mds
� � vgimportvg_mds/*OR instead do it the long way on the next line* �/ � � � � vgscan
� � � � mkdir/dev/vg_mds
� � � � mknod/dev/vg_mds/groupc 64 0xNN0000
� � � � vgimport -v -s -m/tmp/vg_mds.map/dev/vg_mdsI do not see how to tell it to ignore the non-multipathed disc, or has multipathd or LVM have some preference for mutlipath discs over non-multipathed discs, and if so then what is the logic behind the decision?
Any help to further my understanding would be gratefully appreciated.
Quoted 10 lines
Best wishes, S.
PS. I am using SLES, but this was the only mailinglist I found for LVM so I subscribed to it. �I think that LVM and multipathd implementations are reasonably similar across Linux distos. Ergo concepts here are applicable to Suse. �The kernel I am using is a xen enabled host (not a guest): 2.6.16.60-0.27-xen #1 SMP.
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Yes, the dm names are the aliases I set-up in the multipathd.conf and should not change.
I listed these below in my initial email. In this example the alias is
called: dm-5_0111
# multipath -ll dm-5_0111 (360060480000290300618533030313131) dm-5 EMC,SYMMETRIX [size=17G][features=0][hwhandler=0] \_ round-robin 0 [prio=2][active] \_ 0:0:0:32 sdy 65:128 [active][ready] \_ 1:0:0:32 sdl 8:176 [active][ready]
Corresponding entry in multipathd.conf:
multipath {
wwid 360060480000290300618533030313131
alias dm-5_0111
}S.
Quoted 381 lines · brem belguebli
What you have to be aware of is that
/dev/dmnames are volatile and can change across reboots as are/dev/sdnames, never use them directly.If you are using device-mapper-multipath (not emcpowerpath) there is a "
user_friendly_names" boolean setting in/etc/multipath.confthat would give you names such as/dev/mpath/mpath0is set to yes.If set to no, it would give you names such as
/dev/mpath/UUID.Both namings are persistent (stable across reboots) as multipath will base its binding on the disk UUID.
see man multipath.conf to have full options listing.
It allows you also to give custom names to devices by using the alias setting in multipath.conf.
The filter you applied (your previous email) just prevents "r/..." LVM to check and so activate the device names that you rejected.
Hope this'll help
2009/12/30 Simon Loewenthal/NL/Tele2 <[email protected]>:
Quoted 342 lines
Thank-you Bren for the info., I am unsure how to specify the
preferred_devicesusing the muttipath:
Should it be:
preferred_names= [ "^/dev/dm-*/" , "^/dev/cciss/" ]so that it uses these discs :
/dev/cciss/c0d0p4(internal disc)dm-6_010F (multipathd alias for EMC disc) dm-17_0012 (multipathd alias for EMC disc) dm-13_0103 (multipathd alias for EMC disc) dm-10_0109 (multipathd alias for EMC disc)The EMC discs are listed under /dev as :
# ls -l /dev/dm-? brw-r----- 1 root disk 253, 0 Oct 26 14:44 /dev/dm-0 brw-r----- 1 root disk 253, 1 Oct 26 14:44 /dev/dm-1 brw-r----- 1 root disk 253, 2 Oct 26 14:44 /dev/dm-2 brw-r----- 1 root disk 253, 3 Oct 30 10:16 /dev/dm-3 brw-r----- 1 root disk 253, 4 Dec 4 11:47 /dev/dm-4 brw-r----- 1 root disk 253, 5 Dec 4 11:47 /dev/dm-5 brw-r----- 1 root disk 253, 6 Dec 4 11:47 /dev/dm-6 brw-r----- 1 root disk 253, 7 Oct 26 14:44 /dev/dm-7 brw-r----- 1 root disk 253, 8 Dec 4 11:47 /dev/dm-8 brw-r----- 1 root disk 253, 9 Dec 4 11:47 /dev/dm-9...but I do not see
/dev/dm-6_010F.S.
Quoted 299 lines · brem belguebli
Hi,
see man 5 lvm.conf there is an option called
preferred_nameswhich is well explainedIt'll instruct lvm to use the
preferred_namesyou configured in the lvm.conf file if they existie :
preferred_names= "/dev/mpath/" will use/dev/mpath/XXXinstead of/dev/mapper/XXX2009/12/30 Simon Loewenthal/NL/Tele2 <[email protected]>:
Quoted 276 lines
I don't think this original Email made it through to the list, but I think I have found an solution:
In lvm.conf there is this line,
filter = [ "r|/dev/.*/by-path/.*|", "r|/dev/.*/by-id/.*|", "a/.*/" ]If I remove the portion "r|/dev/.*/by-id/.*|", so it is rewritten as, filter = [ "r|/dev/.*/by-path/.*|", "a/.*/" ]
...then it ought to ignore the device,/dev/disk/by-id/scsi-360060480000290300618533030313133Is this correct?
S.
--
Simon Loewenthal/Tele2Quoted 234 lines · Simon Loewenthal/NL/Tele2 wrote:
Dear all,
I have a volume group that is currently using discs directly
presented from EMC e.g/dev/disk/by-id/scsi-360060480000290300618533030313042.An lvdisplay -v shows these PVs:
# vgdisplay -v vg_mds Using volume group(s) on command line Finding volume group "vg_mds" --- Volume group --- VG Name vg_mds System ID Format lvm2 Metadata Areas 12 Metadata Sequence No 4 VG Access read/write VG Status resizable MAX LV 0 Cur LV 1 Open LV 1 Max PV 0 Cur PV 12 Act PV 12 VG Size 202.12 GB PE Size 32.00 MB Total PE 6468 Alloc PE / Size 6468 / 202.12 GB Free PE / Size 0 / 0 VG UUID Wnk1a8-xdVf-RorP-ZxPE-Z3D9-5fp1-2o4hHs--- Logical volume ---
LV Name /dev/vg_mds/lvol_mds VG Name vg_mds LV UUID TErCZW-senu-YR3k-I25n-Tqk9-BK2k-3mQY3S LV Write Access read/write LV Status available # open 1 LV Size 202.12 GB Current LE 6468 Segments 12 Allocation inherit Read ahead sectors 0 Block device 253:7--- Physical volumes ---
PV Name/dev/disk/by-id/scsi-360060480000290300618533030313133PV UUID 255V1X-uMZp-Lod1-3jsa-cCGd-JaNZ-v0dEXn PV Status allocatable Total PE / Free PE 539 / 0PV Name
/dev/disk/by-id/scsi-360060480000290300618533030313131PV UUID RU5WZK-G3hY-lXCD-F6Kj-PcJA-DcbE-iV17P7 PV Status allocatable Total PE / Free PE 539 / 0PV Name
/dev/disk/by-id/scsi-360060480000290300618533030313046PV UUID c3DVym-lzdw-MgS6-acQI-BcUD-UOGq-iG6hSe PV Status allocatable Total PE / Free PE 539 / 0PV Name
/dev/disk/by-id/scsi-360060480000290300618533030313044PV UUID d7VD54-KmXZ-t8eX-dvph-9lSp-ym03-Lc62sI PV Status allocatable Total PE / Free PE 539 / 0PV Name
/dev/disk/by-id/scsi-360060480000290300618533030313042PV UUID n32oAY-soe3-odYI-SAFQ-yM7v-FRaw-e9hS63 PV Status allocatable Total PE / Free PE 539 / 0PV Name
/dev/disk/by-id/scsi-360060480000290300618533030313039PV UUID hT2hZ7-XAZr-ZUte-rzLV-kwFX-Jtih-K3OgZe PV Status allocatable Total PE / Free PE 539 / 0PV Name
/dev/disk/by-id/scsi-360060480000290300618533030313037PV UUID ut4fEx-R0c2-lA4y-qS3F-SYfp-Chuz-2SrvTo PV Status allocatable Total PE / Free PE 539 / 0PV Name
/dev/disk/by-id/scsi-360060480000290300618533030313035PV UUID BMJ8LA-b0L7-aAoK-4WqG-MLdU-s8Y8-xGib2s PV Status allocatable Total PE / Free PE 539 / 0PV Name
/dev/disk/by-id/scsi-360060480000290300618533030313033PV UUID uSasZ1-96rT-ngGN-Wfcr-fBNg-ceM0-GaccVU PV Status allocatable Total PE / Free PE 539 / 0PV Name
/dev/disk/by-id/scsi-360060480000290300618533030313031PV UUID R15yAf-t1YO-Z0Dx-4n2G-oTyD-Secp-2igMJc PV Status allocatable Total PE / Free PE 539 / 0PV Name
/dev/disk/by-id/scsi-360060480000290300618533030304646PV UUID nrhhx1-7AxM-VmVv-sRY5-TLR7-UAEE-wBUIMB PV Status allocatable Total PE / Free PE 539 / 0PV Name
/dev/disk/by-id/scsi-360060480000290300618533030304644PV UUID ctz8rd-ew58-0pU8-FssR-x9pR-KSA9-mI4flw PV Status allocatable Total PE / Free PE 539 / 0I want to export this volume group and inport it again using multipathing. I have configured the multipathing thus,
# multipath -ll dm-6_010F (360060480000290300618533030313046) dm-6 EMC,SYMMETRIX [size=17G][features=0][hwhandler=0] \_ round-robin 0 [prio=2][active] \_ 0:0:0:31 sdx 65:112 [active][ready] \_ 1:0:0:31 sdk 8:160 [active][ready] dm-17_0012 (360060480000290300618533030303132) dm-17 EMC,SYMMETRIX [size=4.7M][features=0][hwhandler=0] \_ round-robin 0 [prio=2][active] \_ 0:0:0:0 sdn 8:208 [active][ready] \_ 1:0:0:0 sda 8:0 [active][ready] dm-13_0103 (360060480000290300618533030313033) dm-13 EMC,SYMMETRIX [size=17G][features=0][hwhandler=0] \_ round-robin 0 [prio=2][active] \_ 0:0:0:25 sdr 65:16 [active][ready] \_ 1:0:0:25 sde 8:64 [active][ready] dm-10_0109 (360060480000290300618533030313039) dm-10 EMC,SYMMETRIX [size=17G][features=0][hwhandler=0] \_ round-robin 0 [prio=2][active] \_ 0:0:0:28 sdu 65:64 [active][ready] \_ 1:0:0:28 sdh 8:112 [active][ready] dm-14_0101 (360060480000290300618533030313031) dm-14 EMC,SYMMETRIX [size=17G][features=0][hwhandler=0] \_ round-robin 0 [prio=2][active] \_ 0:0:0:24 sdq 65:0 [active][ready] \_ 1:0:0:24 sdd 8:48 [active][ready] dm-8_010D (360060480000290300618533030313044) dm-8 EMC,SYMMETRIX [size=17G][features=0][hwhandler=0] \_ round-robin 0 [prio=2][active] \_ 0:0:0:30 sdw 65:96 [active][ready] \_ 1:0:0:30 sdj 8:144 [active][ready] dm-15_00FF (360060480000290300618533030304646) dm-15 EMC,SYMMETRIX [size=17G][features=0][hwhandler=0] \_ round-robin 0 [prio=2][active] \_ 0:0:0:23 sdp 8:240 [active][ready] \_ 1:0:0:23 sdc 8:32 [active][ready] dm-11_0107 (360060480000290300618533030313037) dm-11 EMC,SYMMETRIX [size=17G][features=0][hwhandler=0] \_ round-robin 0 [prio=2][active] \_ 0:0:0:27 sdt 65:48 [active][ready] \_ 1:0:0:27 sdg 8:96 [active][ready] dm-4_0113 (360060480000290300618533030313133) dm-4 EMC,SYMMETRIX [size=17G][features=0][hwhandler=0] \_ round-robin 0 [prio=2][active] \_ 0:0:0:33 sdz 65:144 [active][ready] \_ 1:0:0:33 sdm 8:192 [active][ready] dm-9_010B (360060480000290300618533030313042) dm-9 EMC,SYMMETRIX [size=17G][features=0][hwhandler=0] \_ round-robin 0 [prio=2][active] \_ 0:0:0:29 sdv 65:80 [active][ready] \_ 1:0:0:29 sdi 8:128 [active][ready] dm-16_00FD (360060480000290300618533030304644) dm-16 EMC,SYMMETRIX [size=17G][features=0][hwhandler=0] \_ round-robin 0 [prio=2][active] \_ 0:0:0:22 sdo 8:224 [active][ready] \_ 1:0:0:22 sdb 8:16 [active][ready] dm-12_0105 (360060480000290300618533030313035) dm-12 EMC,SYMMETRIX [size=17G][features=0][hwhandler=0] \_ round-robin 0 [prio=2][active] \_ 0:0:0:26 sds 65:32 [active][ready] \_ 1:0:0:26 sdf 8:80 [active][ready] dm-5_0111 (360060480000290300618533030313131) dm-5 EMC,SYMMETRIX [size=17G][features=0][hwhandler=0] \_ round-robin 0 [prio=2][active] \_ 0:0:0:32 sdy 65:128 [active][ready] \_ 1:0:0:32 sdl 8:176 [active][ready]Device mapper reports this:
# dmsetup ls dm-6_010F (253, 6) dm-17_0012 (253, 17) dm-13_0103 (253, 13) dm-10_0109 (253, 10) vg00-app052 (253, 3) vg00-xen (253, 2) vg00-usr (253, 0) vg00-var (253, 1) dm-14_0101 (253, 14) dm-8_010D (253, 8) dm-15_00FF (253, 15) dm-11_0107 (253, 11) dm-4_0113 (253, 4) vg_mds-lvol_mds (253, 7) dm-9_010B (253, 9) dm-16_00FD (253, 16) dm-12_0105 (253, 12) dm-5_0111 (253, 5)What I do not understand is that surly when I perform a vgscan how will it decide to query only the devices presented from the multipathd, and ignore those presented via the dev/disk/by-id/scsi-nnnnnnnnnn? Won't it see two
vg_mdsvolumes instead of only those volumes that lie on the multipathed discs, which are the same pshycial discs as the disk/by-id?My plan of action is currently:
vgchange -a nvg_mds
vgexport -m/tmp/vg_mds.mapmds
vgexport -f/tmp/vg_mds.pvmds
vgscan
vgchange -y avg_mds
vgimportvg_mds/*OR instead do it the long way on the next line* /
vgscan
mkdir/dev/vg_mds
mknod/dev/vg_mds/groupc 64 0xNN0000
vgimport -v -s -m/tmp/vg_mds.map/dev/vg_mdsI do not see how to tell it to ignore the non-multipathed disc, or has multipathd or LVM have some preference for mutlipath discs over non-multipathed discs, and if so then what is the logic behind the decision?
Any help to further my understanding would be gratefully appreciated.
Quoted 11 lines
Best wishes, S.
PS. I am using SLES, but this was the only mailinglist I found for LVM so I subscribed to it. I think that LVM and multipathd implementations are reasonably similar across Linux distos. Ergo concepts here are applicable to Suse. The kernel I am using is a xen enabled host (not a guest): 2.6.16.60-0.27-xen #1 SMP.
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I have changed the alias from the dm name to EMC_{LUNid} e.g EMC_0103 This should make more sence.
EMC_0103 (360060480000290300618533030313033) dm-13 EMC,SYMMETRIX [size=17G][features=0][hwhandler=0]
\_ round-robin 0 [prio=2][active]
\_ 0:0:0:25 sdr 65:16 [active][ready] \_ 1:0:0:25 sde 8:64 [active][ready]
# ls /dev/mapper EMC_0012 EMC_00FF EMC_0103 EMC_0107 EMC_010B EMC_010F EMC_0113 vg00-app052 vg00-var vg_mds-lvol_mds EMC_00FD EMC_0101 EMC_0105 EMC_0109 EMC_010D EMC_0111 control vg00-usr vg00-xen
Ought the preferred_devices to be:
preferred_names = [ "^/dev/mapper/" , "^/dev/cciss/" ]
S.
Quoted 419 lines · Simon Loewenthal/NL/Tele2 wrote:
Yes, the dm names are the aliases I set-up in the multipathd.conf and should not change.
I listed these below in my initial email. In this example the alias is
called: dm-5_0111# multipath -ll dm-5_0111 (360060480000290300618533030313131) dm-5 EMC,SYMMETRIX [size=17G][features=0][hwhandler=0] \_ round-robin 0 [prio=2][active] \_ 0:0:0:32 sdy 65:128 [active][ready] \_ 1:0:0:32 sdl 8:176 [active][ready]Corresponding entry in multipathd.conf:
multipath { wwid 360060480000290300618533030313131 alias dm-5_0111 }S.
Quoted 382 lines · brem belguebli
What you have to be aware of is that
/dev/dmnames are volatile and can change across reboots as are/dev/sdnames, never use them directly.If you are using device-mapper-multipath (not emcpowerpath) there is a "
user_friendly_names" boolean setting in/etc/multipath.confthat would give you names such as/dev/mpath/mpath0is set to yes.If set to no, it would give you names such as
/dev/mpath/UUID.Both namings are persistent (stable across reboots) as multipath will base its binding on the disk UUID.
see man multipath.conf to have full options listing.
It allows you also to give custom names to devices by using the alias setting in multipath.conf.
The filter you applied (your previous email) just prevents "r/..." LVM to check and so activate the device names that you rejected.
Hope this'll help
2009/12/30 Simon Loewenthal/NL/Tele2 <[email protected]>:
Quoted 348 lines
Thank-you Bren for the info., I am unsure how to specify the
preferred_devicesusing the muttipath:
Should it be:
preferred_names= [ "^/dev/dm-*/" , "^/dev/cciss/" ]so that it uses these discs :
/dev/cciss/c0d0p4(internal disc)dm-6_010F (multipathd alias for EMC disc) dm-17_0012 (multipathd alias for EMC disc) dm-13_0103 (multipathd alias for EMC disc) dm-10_0109 (multipathd alias for EMC disc)The EMC discs are listed under /dev as :
# ls -l /dev/dm-? brw-r----- 1 root disk 253, 0 Oct 26 14:44 /dev/dm-0 brw-r----- 1 root disk 253, 1 Oct 26 14:44 /dev/dm-1 brw-r----- 1 root disk 253, 2 Oct 26 14:44 /dev/dm-2 brw-r----- 1 root disk 253, 3 Oct 30 10:16 /dev/dm-3 brw-r----- 1 root disk 253, 4 Dec 4 11:47 /dev/dm-4 brw-r----- 1 root disk 253, 5 Dec 4 11:47 /dev/dm-5 brw-r----- 1 root disk 253, 6 Dec 4 11:47 /dev/dm-6 brw-r----- 1 root disk 253, 7 Oct 26 14:44 /dev/dm-7 brw-r----- 1 root disk 253, 8 Dec 4 11:47 /dev/dm-8 brw-r----- 1 root disk 253, 9 Dec 4 11:47 /dev/dm-9...but I do not see
/dev/dm-6_010F.S.
Quoted 303 lines · brem belguebli
Hi,
see man 5 lvm.conf there is an option called
preferred_nameswhich is well explainedIt'll instruct lvm to use the
preferred_namesyou configured in the lvm.conf file if they existie :
preferred_names= "/dev/mpath/" will use/dev/mpath/XXXinstead of/dev/mapper/XXX2009/12/30 Simon Loewenthal/NL/Tele2 <[email protected]>:
Quoted 278 lines
I don't think this original Email made it through to the list, but I think I have found an solution:
In lvm.conf there is this line,
filter = [ "r|/dev/.*/by-path/.*|", "r|/dev/.*/by-id/.*|", "a/.*/" ]If I remove the portion "r|/dev/.*/by-id/.*|", so it is rewritten as, filter = [ "r|/dev/.*/by-path/.*|", "a/.*/" ]
...then it ought to ignore the device,/dev/disk/by-id/scsi-360060480000290300618533030313133Is this correct?
S.
--
Simon Loewenthal/Tele2Quoted 234 lines · Simon Loewenthal/NL/Tele2 wrote:
Dear all,
I have a volume group that is currently using discs directly
presented from EMC e.g/dev/disk/by-id/scsi-360060480000290300618533030313042.An lvdisplay -v shows these PVs:
# vgdisplay -v vg_mds Using volume group(s) on command line Finding volume group "vg_mds" --- Volume group --- VG Name vg_mds System ID Format lvm2 Metadata Areas 12 Metadata Sequence No 4 VG Access read/write VG Status resizable MAX LV 0 Cur LV 1 Open LV 1 Max PV 0 Cur PV 12 Act PV 12 VG Size 202.12 GB PE Size 32.00 MB Total PE 6468 Alloc PE / Size 6468 / 202.12 GB Free PE / Size 0 / 0 VG UUID Wnk1a8-xdVf-RorP-ZxPE-Z3D9-5fp1-2o4hHs--- Logical volume ---
LV Name /dev/vg_mds/lvol_mds VG Name vg_mds LV UUID TErCZW-senu-YR3k-I25n-Tqk9-BK2k-3mQY3S LV Write Access read/write LV Status available # open 1 LV Size 202.12 GB Current LE 6468 Segments 12 Allocation inherit Read ahead sectors 0 Block device 253:7--- Physical volumes ---
PV Name/dev/disk/by-id/scsi-360060480000290300618533030313133PV UUID 255V1X-uMZp-Lod1-3jsa-cCGd-JaNZ-v0dEXn PV Status allocatable Total PE / Free PE 539 / 0PV Name
/dev/disk/by-id/scsi-360060480000290300618533030313131PV UUID RU5WZK-G3hY-lXCD-F6Kj-PcJA-DcbE-iV17P7 PV Status allocatable Total PE / Free PE 539 / 0PV Name
/dev/disk/by-id/scsi-360060480000290300618533030313046PV UUID c3DVym-lzdw-MgS6-acQI-BcUD-UOGq-iG6hSe PV Status allocatable Total PE / Free PE 539 / 0PV Name
/dev/disk/by-id/scsi-360060480000290300618533030313044PV UUID d7VD54-KmXZ-t8eX-dvph-9lSp-ym03-Lc62sI PV Status allocatable Total PE / Free PE 539 / 0PV Name
/dev/disk/by-id/scsi-360060480000290300618533030313042PV UUID n32oAY-soe3-odYI-SAFQ-yM7v-FRaw-e9hS63 PV Status allocatable Total PE / Free PE 539 / 0PV Name
/dev/disk/by-id/scsi-360060480000290300618533030313039PV UUID hT2hZ7-XAZr-ZUte-rzLV-kwFX-Jtih-K3OgZe PV Status allocatable Total PE / Free PE 539 / 0PV Name
/dev/disk/by-id/scsi-360060480000290300618533030313037PV UUID ut4fEx-R0c2-lA4y-qS3F-SYfp-Chuz-2SrvTo PV Status allocatable Total PE / Free PE 539 / 0PV Name
/dev/disk/by-id/scsi-360060480000290300618533030313035PV UUID BMJ8LA-b0L7-aAoK-4WqG-MLdU-s8Y8-xGib2s PV Status allocatable Total PE / Free PE 539 / 0PV Name
/dev/disk/by-id/scsi-360060480000290300618533030313033PV UUID uSasZ1-96rT-ngGN-Wfcr-fBNg-ceM0-GaccVU PV Status allocatable Total PE / Free PE 539 / 0PV Name
/dev/disk/by-id/scsi-360060480000290300618533030313031PV UUID R15yAf-t1YO-Z0Dx-4n2G-oTyD-Secp-2igMJc PV Status allocatable Total PE / Free PE 539 / 0PV Name
/dev/disk/by-id/scsi-360060480000290300618533030304646PV UUID nrhhx1-7AxM-VmVv-sRY5-TLR7-UAEE-wBUIMB PV Status allocatable Total PE / Free PE 539 / 0PV Name
/dev/disk/by-id/scsi-360060480000290300618533030304644PV UUID ctz8rd-ew58-0pU8-FssR-x9pR-KSA9-mI4flw PV Status allocatable Total PE / Free PE 539 / 0I want to export this volume group and inport it again using multipathing. I have configured the multipathing thus,
# multipath -ll dm-6_010F (360060480000290300618533030313046) dm-6 EMC,SYMMETRIX [size=17G][features=0][hwhandler=0] \_ round-robin 0 [prio=2][active] \_ 0:0:0:31 sdx 65:112 [active][ready] \_ 1:0:0:31 sdk 8:160 [active][ready] dm-17_0012 (360060480000290300618533030303132) dm-17 EMC,SYMMETRIX [size=4.7M][features=0][hwhandler=0] \_ round-robin 0 [prio=2][active] \_ 0:0:0:0 sdn 8:208 [active][ready] \_ 1:0:0:0 sda 8:0 [active][ready] dm-13_0103 (360060480000290300618533030313033) dm-13 EMC,SYMMETRIX [size=17G][features=0][hwhandler=0] \_ round-robin 0 [prio=2][active] \_ 0:0:0:25 sdr 65:16 [active][ready] \_ 1:0:0:25 sde 8:64 [active][ready] dm-10_0109 (360060480000290300618533030313039) dm-10 EMC,SYMMETRIX [size=17G][features=0][hwhandler=0] \_ round-robin 0 [prio=2][active] \_ 0:0:0:28 sdu 65:64 [active][ready] \_ 1:0:0:28 sdh 8:112 [active][ready] dm-14_0101 (360060480000290300618533030313031) dm-14 EMC,SYMMETRIX [size=17G][features=0][hwhandler=0] \_ round-robin 0 [prio=2][active] \_ 0:0:0:24 sdq 65:0 [active][ready] \_ 1:0:0:24 sdd 8:48 [active][ready] dm-8_010D (360060480000290300618533030313044) dm-8 EMC,SYMMETRIX [size=17G][features=0][hwhandler=0] \_ round-robin 0 [prio=2][active] \_ 0:0:0:30 sdw 65:96 [active][ready] \_ 1:0:0:30 sdj 8:144 [active][ready] dm-15_00FF (360060480000290300618533030304646) dm-15 EMC,SYMMETRIX [size=17G][features=0][hwhandler=0] \_ round-robin 0 [prio=2][active] \_ 0:0:0:23 sdp 8:240 [active][ready] \_ 1:0:0:23 sdc 8:32 [active][ready] dm-11_0107 (360060480000290300618533030313037) dm-11 EMC,SYMMETRIX [size=17G][features=0][hwhandler=0] \_ round-robin 0 [prio=2][active] \_ 0:0:0:27 sdt 65:48 [active][ready] \_ 1:0:0:27 sdg 8:96 [active][ready] dm-4_0113 (360060480000290300618533030313133) dm-4 EMC,SYMMETRIX [size=17G][features=0][hwhandler=0] \_ round-robin 0 [prio=2][active] \_ 0:0:0:33 sdz 65:144 [active][ready] \_ 1:0:0:33 sdm 8:192 [active][ready] dm-9_010B (360060480000290300618533030313042) dm-9 EMC,SYMMETRIX [size=17G][features=0][hwhandler=0] \_ round-robin 0 [prio=2][active] \_ 0:0:0:29 sdv 65:80 [active][ready] \_ 1:0:0:29 sdi 8:128 [active][ready] dm-16_00FD (360060480000290300618533030304644) dm-16 EMC,SYMMETRIX [size=17G][features=0][hwhandler=0] \_ round-robin 0 [prio=2][active] \_ 0:0:0:22 sdo 8:224 [active][ready] \_ 1:0:0:22 sdb 8:16 [active][ready] dm-12_0105 (360060480000290300618533030313035) dm-12 EMC,SYMMETRIX [size=17G][features=0][hwhandler=0] \_ round-robin 0 [prio=2][active] \_ 0:0:0:26 sds 65:32 [active][ready] \_ 1:0:0:26 sdf 8:80 [active][ready] dm-5_0111 (360060480000290300618533030313131) dm-5 EMC,SYMMETRIX [size=17G][features=0][hwhandler=0] \_ round-robin 0 [prio=2][active] \_ 0:0:0:32 sdy 65:128 [active][ready] \_ 1:0:0:32 sdl 8:176 [active][ready]Device mapper reports this:
# dmsetup ls dm-6_010F (253, 6) dm-17_0012 (253, 17) dm-13_0103 (253, 13) dm-10_0109 (253, 10) vg00-app052 (253, 3) vg00-xen (253, 2) vg00-usr (253, 0) vg00-var (253, 1) dm-14_0101 (253, 14) dm-8_010D (253, 8) dm-15_00FF (253, 15) dm-11_0107 (253, 11) dm-4_0113 (253, 4) vg_mds-lvol_mds (253, 7) dm-9_010B (253, 9) dm-16_00FD (253, 16) dm-12_0105 (253, 12) dm-5_0111 (253, 5)What I do not understand is that surly when I perform a vgscan how will it decide to query only the devices presented from the multipathd, and ignore those presented via the dev/disk/by-id/scsi-nnnnnnnnnn? Won't it see two
vg_mdsvolumes instead of only those volumes that lie on the multipathed discs, which are the same pshycial discs as the disk/by-id?My plan of action is currently:
vgchange -a nvg_mds
vgexport -m/tmp/vg_mds.mapmds
vgexport -f/tmp/vg_mds.pvmds
vgscan
vgchange -y avg_mds
vgimportvg_mds/*OR instead do it the long way on the next line* /
vgscan
mkdir/dev/vg_mds
mknod/dev/vg_mds/groupc 64 0xNN0000
vgimport -v -s -m/tmp/vg_mds.map/dev/vg_mdsI do not see how to tell it to ignore the non-multipathed disc, or has multipathd or LVM have some preference for mutlipath discs over non-multipathed discs, and if so then what is the logic behind the decision?
Any help to further my understanding would be gratefully appreciated.
Quoted 12 lines
Best wishes, S.
PS. I am using SLES, but this was the only mailinglist I found for LVM so I subscribed to it. I think that LVM and multipathd implementations are reasonably similar across Linux distos. Ergo concepts here are applicable to Suse. The kernel I am using is a xen enabled host (not a guest): 2.6.16.60-0.27-xen #1 SMP.
--
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Quoted 10 lines · brem belguebli
Hi,
see man 5 lvm.conf there is an option called
preferred_nameswhich is well explainedIt'll instruct lvm to use the
preferred_namesyou configured in the lvm.conf file if they existie :
preferred_names= "/dev/mpath/" will use/dev/mpath/XXXinstead of/dev/mapper/XXX
It's best not to use the symlinks in /dev/mpath - they are not always reliable. Use the device nodes created in /dev/mapper instead.
Regards,
Bryn.
Hi,
Never had no problem with it.
The only problem I've hit was due to the binding file being, by default, located in /var/lib/multipath, which is in my setup on a separate LV than /, during boot time the devices were not correctly created.
Just had to switch the binding file to /etc and now no more problem.
extract of my /etc/multipath.conf :
defaults {
...
flush_on_last_del yes
user_friendly_names yes
bindings_file "/etc/multipath_bindings"
}
2010/1/4 Bryn M. Reeves <[email protected]>:
Quoted 25 lines · brem belguebli
Quoted 10 lines
Hi,
see man 5 lvm.conf there is an option called
preferred_nameswhich is well explainedIt'll instruct lvm to use the
preferred_namesyou configured in the lvm.conf file if they existie :
preferred_names= "/dev/mpath/" will use/dev/mpath/XXXinstead of/dev/mapper/XXXIt's best not to use the symlinks in
/dev/mpath- they are not always reliable. Use the device nodes created in/dev/mapperinstead.Regards,
Bryn._______________________________________________
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I just this on a system with these in the lvm.conf:
preferred_names = [ "^/dev/mapper/EMC_", "^/dev/[hs]d", "^/dev/cciss" ]
filter = [ "r|/dev/.*/by-path/.*|", "r|/dev/.*/by-id/.*|","a|/dev/mapper/EMC_*|", "a|/dev/cciss/*|" , "r/.*/" ]
After a pvscan and vgscan I did a vgimport. Guess what: A vgimport of the volume group ignored the filters and preferred devices and imported the vg with these PVs (only one PV shown for brevity, but the rest are similar ):
PV Name /dev/dm-16
PV UUID ctz8rd-ew58-0pU8-FssR-x9pR-KSA9-mI4flw PV Status allocatable Total PE / Free PE 539 / 0
Unless, /dev/dm-16 is really some abstracted link back to a multipathed device but I cannot work out this bit:
# ls -l /dev/mapper/ total 0 brw------- 1 root root 253, 17 Dec 30 15:11 EMC_0012 [SNIP]
# dmsetup ls EMC_0103 (253, 13) EMC_00FF (253, 15) EMC_0101 (253, 14) EMC_00FD (253, 16) vg00-app052 (253, 3) vg00-xen (253, 2) vg00-usr (253, 0) EMC_0113 (253, 4) vg00-var (253, 1) EMC_0012 (253, 17) EMC_010F (253, 6) EMC_0109 (253, 10) EMC_0111 (253, 5) EMC_010D (253, 8) EMC_0107 (253, 11) EMC_010B (253, 9) EMC_0105 (253, 12)
The output of pvscan and vgscan follow:
*PVSCAN*
# pvscan -vv
Setting global/locking_type to 1
File-based locking selected.
Setting global/locking_dir to /var/lock/lvm
Wiping cache of LVM-capable devices
Wiping internal VG cache
Walking through all physical volumes
/dev/cciss/c0d0: size is 286677120 sectors
/dev/cciss/c0d0p1: size is 208782 sectors
/dev/cciss/c0d0p1: size is 208782 sectors
/dev/cciss/c0d0p1: No label detected
/dev/cciss/c0d0p2: size is 4209030 sectors
/dev/cciss/c0d0p2: size is 4209030 sectors
/dev/cciss/c0d0p2: No label detected
/dev/cciss/c0d0p3: size is 10490445 sectors
/dev/cciss/c0d0p3: size is 10490445 sectors
/dev/cciss/c0d0p3: No label detected
/dev/cciss/c0d0p4: size is 271755540 sectors
/dev/cciss/c0d0p4: size is 271755540 sectors
/dev/cciss/c0d0p4: lvm2 label detected
/dev/mapper/EMC_0113: size is 35358720 sectors
/dev/mapper/EMC_0113: size is 35358720 sectors
/dev/mapper/EMC_0113: lvm2 label detected
/dev/mapper/EMC_0111: size is 35358720 sectors
/dev/mapper/EMC_0111: size is 35358720 sectors
/dev/mapper/EMC_0111: lvm2 label detected
/dev/mapper/EMC_010F: size is 35358720 sectors
/dev/mapper/EMC_010F: size is 35358720 sectors
/dev/mapper/EMC_010F: lvm2 label detected
/dev/mapper/EMC_010D: size is 35358720 sectors
/dev/mapper/EMC_010D: size is 35358720 sectors
/dev/mapper/EMC_010D: lvm2 label detected
/dev/mapper/EMC_010B: size is 35358720 sectors
/dev/mapper/EMC_010B: size is 35358720 sectors
/dev/mapper/EMC_010B: lvm2 label detected
/dev/mapper/EMC_0109: size is 35358720 sectors
/dev/mapper/EMC_0109: size is 35358720 sectors
/dev/mapper/EMC_0109: lvm2 label detected
/dev/mapper/EMC_0107: size is 35358720 sectors
/dev/mapper/EMC_0107: size is 35358720 sectors
/dev/mapper/EMC_0107: lvm2 label detected
/dev/mapper/EMC_0105: size is 35358720 sectors
/dev/mapper/EMC_0105: size is 35358720 sectors
/dev/mapper/EMC_0105: lvm2 label detected
/dev/mapper/EMC_0103: size is 35358720 sectors
/dev/mapper/EMC_0103: size is 35358720 sectors
/dev/mapper/EMC_0103: lvm2 label detected
/dev/mapper/EMC_0101: size is 35358720 sectors
/dev/mapper/EMC_0101: size is 35358720 sectors
/dev/mapper/EMC_0101: lvm2 label detected
/dev/mapper/EMC_00FF: size is 35358720 sectors
/dev/mapper/EMC_00FF: size is 35358720 sectors
/dev/mapper/EMC_00FF: lvm2 label detected
/dev/mapper/EMC_00FD: size is 35358720 sectors
/dev/mapper/EMC_00FD: size is 35358720 sectors
/dev/mapper/EMC_00FD: lvm2 label detected
/dev/mapper/EMC_0012: size is 9600 sectors
/dev/mapper/EMC_0012: size is 9600 sectors
/dev/mapper/EMC_0012: No label detected
/dev/mapper/EMC_0113: lvm2 label detected
/dev/mapper/EMC_0111: lvm2 label detected
/dev/mapper/EMC_010F: lvm2 label detected
/dev/mapper/EMC_010D: lvm2 label detected
/dev/mapper/EMC_010B: lvm2 label detected
/dev/mapper/EMC_0109: lvm2 label detected
/dev/mapper/EMC_0107: lvm2 label detected
/dev/mapper/EMC_0105: lvm2 label detected
/dev/mapper/EMC_0103: lvm2 label detected
/dev/mapper/EMC_0101: lvm2 label detected
/dev/mapper/EMC_00FF: lvm2 label detected
/dev/mapper/EMC_00FD: lvm2 label detected
/dev/mapper/EMC_0113: lvm2 label detected
/dev/mapper/EMC_0111: lvm2 label detected
/dev/mapper/EMC_010F: lvm2 label detected
/dev/mapper/EMC_010D: lvm2 label detected
/dev/mapper/EMC_010B: lvm2 label detected
/dev/mapper/EMC_0109: lvm2 label detected
/dev/mapper/EMC_0107: lvm2 label detected
/dev/mapper/EMC_0105: lvm2 label detected
/dev/mapper/EMC_0103: lvm2 label detected
/dev/mapper/EMC_0101: lvm2 label detected
/dev/mapper/EMC_00FF: lvm2 label detected
/dev/mapper/EMC_00FD: lvm2 label detected
/dev/mapper/EMC_0113: lvm2 label detected
/dev/mapper/EMC_0111: lvm2 label detected
/dev/mapper/EMC_010F: lvm2 label detected
/dev/mapper/EMC_010D: lvm2 label detected
/dev/mapper/EMC_010B: lvm2 label detected
/dev/mapper/EMC_0109: lvm2 label detected
/dev/mapper/EMC_0107: lvm2 label detected
/dev/mapper/EMC_0105: lvm2 label detected
/dev/mapper/EMC_0103: lvm2 label detected
/dev/mapper/EMC_0101: lvm2 label detected
/dev/mapper/EMC_00FF: lvm2 label detected
/dev/mapper/EMC_00FD: lvm2 label detected
/dev/mapper/EMC_0113: lvm2 label detected
/dev/mapper/EMC_0111: lvm2 label detected
/dev/mapper/EMC_010F: lvm2 label detected
/dev/mapper/EMC_010D: lvm2 label detected
/dev/mapper/EMC_010B: lvm2 label detected
/dev/mapper/EMC_0109: lvm2 label detected
/dev/mapper/EMC_0107: lvm2 label detected
/dev/mapper/EMC_0105: lvm2 label detected
/dev/mapper/EMC_0103: lvm2 label detected
/dev/mapper/EMC_0101: lvm2 label detected
/dev/mapper/EMC_00FF: lvm2 label detected
/dev/mapper/EMC_00FD: lvm2 label detected
/dev/mapper/EMC_0113: lvm2 label detected
/dev/mapper/EMC_0111: lvm2 label detected
/dev/mapper/EMC_010F: lvm2 label detected
/dev/mapper/EMC_010D: lvm2 label detected
/dev/mapper/EMC_010B: lvm2 label detected
/dev/mapper/EMC_0109: lvm2 label detected
/dev/mapper/EMC_0107: lvm2 label detected
/dev/mapper/EMC_0105: lvm2 label detected
/dev/mapper/EMC_0103: lvm2 label detected
/dev/mapper/EMC_0101: lvm2 label detected
/dev/mapper/EMC_00FF: lvm2 label detected
/dev/mapper/EMC_00FD: lvm2 label detected
/dev/mapper/EMC_0113: lvm2 label detected
/dev/mapper/EMC_0111: lvm2 label detected
/dev/mapper/EMC_010F: lvm2 label detected
/dev/mapper/EMC_010D: lvm2 label detected
/dev/mapper/EMC_010B: lvm2 label detected
/dev/mapper/EMC_0109: lvm2 label detected
/dev/mapper/EMC_0107: lvm2 label detected
/dev/mapper/EMC_0105: lvm2 label detected
/dev/mapper/EMC_0103: lvm2 label detected
/dev/mapper/EMC_0101: lvm2 label detected
/dev/mapper/EMC_00FF: lvm2 label detected
/dev/mapper/EMC_00FD: lvm2 label detected
/dev/mapper/EMC_0113: lvm2 label detected
/dev/mapper/EMC_0111: lvm2 label detected
/dev/mapper/EMC_010F: lvm2 label detected
/dev/mapper/EMC_010D: lvm2 label detected
/dev/mapper/EMC_010B: lvm2 label detected
/dev/mapper/EMC_0109: lvm2 label detected
/dev/mapper/EMC_0107: lvm2 label detected
/dev/mapper/EMC_0105: lvm2 label detected
/dev/mapper/EMC_0103: lvm2 label detected
/dev/mapper/EMC_0101: lvm2 label detected
/dev/mapper/EMC_00FF: lvm2 label detected
/dev/mapper/EMC_00FD: lvm2 label detected
/dev/mapper/EMC_0113: lvm2 label detected
/dev/mapper/EMC_0111: lvm2 label detected
/dev/mapper/EMC_010F: lvm2 label detected
/dev/mapper/EMC_010D: lvm2 label detected
/dev/mapper/EMC_010B: lvm2 label detected
/dev/mapper/EMC_0109: lvm2 label detected
/dev/mapper/EMC_0107: lvm2 label detected
/dev/mapper/EMC_0105: lvm2 label detected
/dev/mapper/EMC_0103: lvm2 label detected
/dev/mapper/EMC_0101: lvm2 label detected
/dev/mapper/EMC_00FF: lvm2 label detected
/dev/mapper/EMC_00FD: lvm2 label detected
/dev/mapper/EMC_0113: lvm2 label detected
/dev/mapper/EMC_0111: lvm2 label detected
/dev/mapper/EMC_010F: lvm2 label detected
/dev/mapper/EMC_010D: lvm2 label detected
/dev/mapper/EMC_010B: lvm2 label detected
/dev/mapper/EMC_0109: lvm2 label detected
/dev/mapper/EMC_0107: lvm2 label detected
/dev/mapper/EMC_0105: lvm2 label detected
/dev/mapper/EMC_0103: lvm2 label detected
/dev/mapper/EMC_0101: lvm2 label detected
/dev/mapper/EMC_00FF: lvm2 label detected
/dev/mapper/EMC_00FD: lvm2 label detected
/dev/mapper/EMC_0113: lvm2 label detected
/dev/mapper/EMC_0111: lvm2 label detected
/dev/mapper/EMC_010F: lvm2 label detected
/dev/mapper/EMC_010D: lvm2 label detected
/dev/mapper/EMC_010B: lvm2 label detected
/dev/mapper/EMC_0109: lvm2 label detected
/dev/mapper/EMC_0107: lvm2 label detected
/dev/mapper/EMC_0105: lvm2 label detected
/dev/mapper/EMC_0103: lvm2 label detected
/dev/mapper/EMC_0101: lvm2 label detected
/dev/mapper/EMC_00FF: lvm2 label detected
/dev/mapper/EMC_00FD: lvm2 label detected
/dev/mapper/EMC_0113: lvm2 label detected
/dev/mapper/EMC_0111: lvm2 label detected
/dev/mapper/EMC_010F: lvm2 label detected
/dev/mapper/EMC_010D: lvm2 label detected
/dev/mapper/EMC_010B: lvm2 label detected
/dev/mapper/EMC_0109: lvm2 label detected
/dev/mapper/EMC_0107: lvm2 label detected
/dev/mapper/EMC_0105: lvm2 label detected
/dev/mapper/EMC_0103: lvm2 label detected
/dev/mapper/EMC_0101: lvm2 label detected
/dev/mapper/EMC_00FF: lvm2 label detected
/dev/mapper/EMC_00FD: lvm2 label detected
/dev/mapper/EMC_0113: lvm2 label detected
/dev/mapper/EMC_0111: lvm2 label detected
/dev/mapper/EMC_010F: lvm2 label detected
/dev/mapper/EMC_010D: lvm2 label detected
/dev/mapper/EMC_010B: lvm2 label detected
/dev/mapper/EMC_0109: lvm2 label detected
/dev/mapper/EMC_0107: lvm2 label detected
/dev/mapper/EMC_0105: lvm2 label detected
/dev/mapper/EMC_0103: lvm2 label detected
/dev/mapper/EMC_0101: lvm2 label detected
/dev/mapper/EMC_00FF: lvm2 label detected
/dev/mapper/EMC_00FD: lvm2 label detected
/dev/mapper/EMC_0113: lvm2 label detected
/dev/mapper/EMC_0111: lvm2 label detected
/dev/mapper/EMC_010F: lvm2 label detected
/dev/mapper/EMC_010D: lvm2 label detected
/dev/mapper/EMC_010B: lvm2 label detected
/dev/mapper/EMC_0109: lvm2 label detected
/dev/mapper/EMC_0107: lvm2 label detected
/dev/mapper/EMC_0105: lvm2 label detected
/dev/mapper/EMC_0103: lvm2 label detected
/dev/mapper/EMC_0101: lvm2 label detected
/dev/mapper/EMC_00FF: lvm2 label detected
/dev/mapper/EMC_00FD: lvm2 label detected
/dev/cciss/c0d0p4: lvm2 label detected
/dev/cciss/c0d0p4: lvm2 label detected
PV /dev/mapper/EMC_0113 is in exported VG vg_mds [16.84 GB / 0 free]
PV /dev/mapper/EMC_0111 is in exported VG vg_mds [16.84 GB / 0 free]
PV /dev/mapper/EMC_010F is in exported VG vg_mds [16.84 GB / 0 free]
PV /dev/mapper/EMC_010D is in exported VG vg_mds [16.84 GB / 0 free]
PV /dev/mapper/EMC_010B is in exported VG vg_mds [16.84 GB / 0 free]
PV /dev/mapper/EMC_0109 is in exported VG vg_mds [16.84 GB / 0 free]
PV /dev/mapper/EMC_0107 is in exported VG vg_mds [16.84 GB / 0 free]
PV /dev/mapper/EMC_0105 is in exported VG vg_mds [16.84 GB / 0 free]
PV /dev/mapper/EMC_0103 is in exported VG vg_mds [16.84 GB / 0 free]
PV /dev/mapper/EMC_0101 is in exported VG vg_mds [16.84 GB / 0 free]
PV /dev/mapper/EMC_00FF is in exported VG vg_mds [16.84 GB / 0 free]
PV /dev/mapper/EMC_00FD is in exported VG vg_mds [16.84 GB / 0 free]
PV /dev/cciss/c0d0p4 VG vg00 lvm2 [129.58 GB / 44.00 MB free]
Total: 13 [331.71 GB] / in use: 13 [331.71 GB] / in no VG: 0 [0 ]*VGSCAN
*# vgscan -vv
Setting global/locking_type to 1
File-based locking selected.
Setting global/locking_dir to /var/lock/lvm
Wiping cache of LVM-capable devices
Wiping internal VG cache
Reading all physical volumes. This may take a while...
Finding all volume groups
/dev/cciss/c0d0: size is 286677120 sectors /dev/cciss/c0d0p1: size is 208782 sectors /dev/cciss/c0d0p1: size is 208782 sectors /dev/cciss/c0d0p1: No label detected /dev/cciss/c0d0p2: size is 4209030 sectors /dev/cciss/c0d0p2: size is 4209030 sectors /dev/cciss/c0d0p2: No label detected /dev/cciss/c0d0p3: size is 10490445 sectors /dev/cciss/c0d0p3: size is 10490445 sectors /dev/cciss/c0d0p3: No label detected /dev/cciss/c0d0p4: size is 271755540 sectors /dev/cciss/c0d0p4: size is 271755540 sectors /dev/cciss/c0d0p4: lvm2 label detected /dev/mapper/EMC_0113: size is 35358720 sectors /dev/mapper/EMC_0113: size is 35358720 sectors /dev/mapper/EMC_0113: lvm2 label detected /dev/mapper/EMC_0111: size is 35358720 sectors /dev/mapper/EMC_0111: size is 35358720 sectors /dev/mapper/EMC_0111: lvm2 label detected /dev/mapper/EMC_010F: size is 35358720 sectors /dev/mapper/EMC_010F: size is 35358720 sectors /dev/mapper/EMC_010F: lvm2 label detected /dev/mapper/EMC_010D: size is 35358720 sectors /dev/mapper/EMC_010D: size is 35358720 sectors /dev/mapper/EMC_010D: lvm2 label detected /dev/mapper/EMC_010B: size is 35358720 sectors /dev/mapper/EMC_010B: size is 35358720 sectors /dev/mapper/EMC_010B: lvm2 label detected /dev/mapper/EMC_0109: size is 35358720 sectors /dev/mapper/EMC_0109: size is 35358720 sectors /dev/mapper/EMC_0109: lvm2 label detected /dev/mapper/EMC_0107: size is 35358720 sectors /dev/mapper/EMC_0107: size is 35358720 sectors /dev/mapper/EMC_0107: lvm2 label detected /dev/mapper/EMC_0105: size is 35358720 sectors /dev/mapper/EMC_0105: size is 35358720 sectors /dev/mapper/EMC_0105: lvm2 label detected /dev/mapper/EMC_0103: size is 35358720 sectors /dev/mapper/EMC_0103: size is 35358720 sectors /dev/mapper/EMC_0103: lvm2 label detected /dev/mapper/EMC_0101: size is 35358720 sectors /dev/mapper/EMC_0101: size is 35358720 sectors /dev/mapper/EMC_0101: lvm2 label detected /dev/mapper/EMC_00FF: size is 35358720 sectors /dev/mapper/EMC_00FF: size is 35358720 sectors /dev/mapper/EMC_00FF: lvm2 label detected /dev/mapper/EMC_00FD: size is 35358720 sectors /dev/mapper/EMC_00FD: size is 35358720 sectors /dev/mapper/EMC_00FD: lvm2 label detected /dev/mapper/EMC_0012: size is 9600 sectors /dev/mapper/EMC_0012: size is 9600 sectors /dev/mapper/EMC_0012: No label detected
Locking /var/lock/lvm/V_vg_mds RB
Finding volume group "vg_mds"
/dev/mapper/EMC_0113: lvm2 label detected /dev/mapper/EMC_0111: lvm2 label detected /dev/mapper/EMC_010F: lvm2 label detected /dev/mapper/EMC_010D: lvm2 label detected /dev/mapper/EMC_010B: lvm2 label detected /dev/mapper/EMC_0109: lvm2 label detected /dev/mapper/EMC_0107: lvm2 label detected /dev/mapper/EMC_0105: lvm2 label detected /dev/mapper/EMC_0103: lvm2 label detected /dev/mapper/EMC_0101: lvm2 label detected /dev/mapper/EMC_00FF: lvm2 label detected /dev/mapper/EMC_00FD: lvm2 label detected /dev/mapper/EMC_0113: lvm2 label detected /dev/mapper/EMC_0111: lvm2 label detected /dev/mapper/EMC_010F: lvm2 label detected /dev/mapper/EMC_010D: lvm2 label detected /dev/mapper/EMC_010B: lvm2 label detected /dev/mapper/EMC_0109: lvm2 label detected /dev/mapper/EMC_0107: lvm2 label detected /dev/mapper/EMC_0105: lvm2 label detected /dev/mapper/EMC_0103: lvm2 label detected /dev/mapper/EMC_0101: lvm2 label detected /dev/mapper/EMC_00FF: lvm2 label detected /dev/mapper/EMC_00FD: lvm2 label detected /dev/mapper/EMC_0113: lvm2 label detected /dev/mapper/EMC_0111: lvm2 label detected /dev/mapper/EMC_010F: lvm2 label detected /dev/mapper/EMC_010D: lvm2 label detected /dev/mapper/EMC_010B: lvm2 label detected /dev/mapper/EMC_0109: lvm2 label detected /dev/mapper/EMC_0107: lvm2 label detected /dev/mapper/EMC_0105: lvm2 label detected /dev/mapper/EMC_0103: lvm2 label detected /dev/mapper/EMC_0101: lvm2 label detected /dev/mapper/EMC_00FF: lvm2 label detected /dev/mapper/EMC_00FD: lvm2 label detected /dev/mapper/EMC_0113: lvm2 label detected /dev/mapper/EMC_0111: lvm2 label detected /dev/mapper/EMC_010F: lvm2 label detected /dev/mapper/EMC_010D: lvm2 label detected /dev/mapper/EMC_010B: lvm2 label detected /dev/mapper/EMC_0109: lvm2 label detected /dev/mapper/EMC_0107: lvm2 label detected /dev/mapper/EMC_0105: lvm2 label detected /dev/mapper/EMC_0103: lvm2 label detected /dev/mapper/EMC_0101: lvm2 label detected /dev/mapper/EMC_00FF: lvm2 label detected /dev/mapper/EMC_00FD: lvm2 label detected /dev/mapper/EMC_0113: lvm2 label detected /dev/mapper/EMC_0111: lvm2 label detected /dev/mapper/EMC_010F: lvm2 label detected /dev/mapper/EMC_010D: lvm2 label detected /dev/mapper/EMC_010B: lvm2 label detected /dev/mapper/EMC_0109: lvm2 label detected /dev/mapper/EMC_0107: lvm2 label detected /dev/mapper/EMC_0105: lvm2 label detected /dev/mapper/EMC_0103: lvm2 label detected /dev/mapper/EMC_0101: lvm2 label detected /dev/mapper/EMC_00FF: lvm2 label detected /dev/mapper/EMC_00FD: lvm2 label detected /dev/mapper/EMC_0113: lvm2 label detected /dev/mapper/EMC_0111: lvm2 label detected /dev/mapper/EMC_010F: lvm2 label detected /dev/mapper/EMC_010D: lvm2 label detected /dev/mapper/EMC_010B: lvm2 label detected /dev/mapper/EMC_0109: lvm2 label detected /dev/mapper/EMC_0107: lvm2 label detected /dev/mapper/EMC_0105: lvm2 label detected /dev/mapper/EMC_0103: lvm2 label detected /dev/mapper/EMC_0101: lvm2 label detected /dev/mapper/EMC_00FF: lvm2 label detected /dev/mapper/EMC_00FD: lvm2 label detected /dev/mapper/EMC_0113: lvm2 label detected /dev/mapper/EMC_0111: lvm2 label detected /dev/mapper/EMC_010F: lvm2 label detected /dev/mapper/EMC_010D: lvm2 label detected /dev/mapper/EMC_010B: lvm2 label detected /dev/mapper/EMC_0109: lvm2 label detected /dev/mapper/EMC_0107: lvm2 label detected /dev/mapper/EMC_0105: lvm2 label detected /dev/mapper/EMC_0103: lvm2 label detected /dev/mapper/EMC_0101: lvm2 label detected /dev/mapper/EMC_00FF: lvm2 label detected /dev/mapper/EMC_00FD: lvm2 label detected /dev/mapper/EMC_0113: lvm2 label detected /dev/mapper/EMC_0111: lvm2 label detected /dev/mapper/EMC_010F: lvm2 label detected /dev/mapper/EMC_010D: lvm2 label detected /dev/mapper/EMC_010B: lvm2 label detected /dev/mapper/EMC_0109: lvm2 label detected /dev/mapper/EMC_0107: lvm2 label detected /dev/mapper/EMC_0105: lvm2 label detected /dev/mapper/EMC_0103: lvm2 label detected /dev/mapper/EMC_0101: lvm2 label detected /dev/mapper/EMC_00FF: lvm2 label detected /dev/mapper/EMC_00FD: lvm2 label detected /dev/mapper/EMC_0113: lvm2 label detected /dev/mapper/EMC_0111: lvm2 label detected /dev/mapper/EMC_010F: lvm2 label detected /dev/mapper/EMC_010D: lvm2 label detected /dev/mapper/EMC_010B: lvm2 label detected /dev/mapper/EMC_0109: lvm2 label detected /dev/mapper/EMC_0107: lvm2 label detected /dev/mapper/EMC_0105: lvm2 label detected /dev/mapper/EMC_0103: lvm2 label detected /dev/mapper/EMC_0101: lvm2 label detected /dev/mapper/EMC_00FF: lvm2 label detected /dev/mapper/EMC_00FD: lvm2 label detected /dev/mapper/EMC_0113: lvm2 label detected /dev/mapper/EMC_0111: lvm2 label detected /dev/mapper/EMC_010F: lvm2 label detected /dev/mapper/EMC_010D: lvm2 label detected /dev/mapper/EMC_010B: lvm2 label detected /dev/mapper/EMC_0109: lvm2 label detected /dev/mapper/EMC_0107: lvm2 label detected /dev/mapper/EMC_0105: lvm2 label detected /dev/mapper/EMC_0103: lvm2 label detected /dev/mapper/EMC_0101: lvm2 label detected /dev/mapper/EMC_00FF: lvm2 label detected /dev/mapper/EMC_00FD: lvm2 label detected /dev/mapper/EMC_0113: lvm2 label detected /dev/mapper/EMC_0111: lvm2 label detected /dev/mapper/EMC_010F: lvm2 label detected /dev/mapper/EMC_010D: lvm2 label detected /dev/mapper/EMC_010B: lvm2 label detected /dev/mapper/EMC_0109: lvm2 label detected /dev/mapper/EMC_0107: lvm2 label detected /dev/mapper/EMC_0105: lvm2 label detected /dev/mapper/EMC_0103: lvm2 label detected /dev/mapper/EMC_0101: lvm2 label detected /dev/mapper/EMC_00FF: lvm2 label detected /dev/mapper/EMC_00FD: lvm2 label detected /dev/mapper/EMC_0113: lvm2 label detected /dev/mapper/EMC_0111: lvm2 label detected /dev/mapper/EMC_010F: lvm2 label detected /dev/mapper/EMC_010D: lvm2 label detected /dev/mapper/EMC_010B: lvm2 label detected /dev/mapper/EMC_0109: lvm2 label detected /dev/mapper/EMC_0107: lvm2 label detected /dev/mapper/EMC_0105: lvm2 label detected /dev/mapper/EMC_0103: lvm2 label detected /dev/mapper/EMC_0101: lvm2 label detected /dev/mapper/EMC_00FF: lvm2 label detected /dev/mapper/EMC_00FD: lvm2 label detected /dev/mapper/EMC_0113: lvm2 label detected /dev/mapper/EMC_0111: lvm2 label detected /dev/mapper/EMC_010F: lvm2 label detected /dev/mapper/EMC_010D: lvm2 label detected /dev/mapper/EMC_010B: lvm2 label detected /dev/mapper/EMC_0109: lvm2 label detected /dev/mapper/EMC_0107: lvm2 label detected /dev/mapper/EMC_0105: lvm2 label detected /dev/mapper/EMC_0103: lvm2 label detected /dev/mapper/EMC_0101: lvm2 label detected /dev/mapper/EMC_00FF: lvm2 label detected /dev/mapper/EMC_00FD: lvm2 label detected
Found exported volume group "vg_mds" using metadata type lvm2
Unlocking /var/lock/lvm/V_vg_mds
Locking /var/lock/lvm/V_vg00 RB
Finding volume group "vg00"
/dev/cciss/c0d0p4: lvm2 label detected /dev/cciss/c0d0p4: lvm2 label detected
Found volume group "vg00" using metadata type lvm2
Unlocking /var/lock/lvm/V_vg00
Quoted 57 lines · brem belguebli
Hi,
Never had no problem with it.
The only problem I've hit was due to the binding file being, by default, located in
/var/lib/multipath, which is in my setup on a separate LV than /, during boot time the devices were not correctly created.Just had to switch the binding file to /etc and now no more problem.
extract of my
/etc/multipath.conf:defaults {
...
flush_on_last_delyes
user_friendly_namesyes
bindings_file"/etc/multipath_bindings"
}2010/1/4 Bryn M. Reeves <[email protected]>:
Quoted 20 lines · brem belguebli
Quoted 12 lines
Hi,
see man 5 lvm.conf there is an option called
preferred_nameswhich is well explainedIt'll instruct lvm to use the
preferred_namesyou configured in the lvm.conf file if they existie :
preferred_names= "/dev/mpath/" will use/dev/mpath/XXXinstead of/dev/mapper/XXXIt's best not to use the symlinks in
/dev/mpath- they are not always reliable. Use the device nodes created in/dev/mapperinstead.Regards,
Bryn.Quoted 7 lines
_______________________________________________
linux-lvm mailing list
[email protected]
https://www.redhat.com/mailman/listinfo/linux-lvm
read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/_______________________________________________
linux-lvm mailing list
[email protected]
https://www.redhat.com/mailman/listinfo/linux-lvm
read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
Signature · 8 lines
Simon Loewenthal/Tele2 GSM: +31 6 2000 5427 ******** IMPORTANT NOTICE ******** Please repect the X-Reply to klunky.co.uk. PGP available 0xD86A5A17. S/MIME PKCS12 key available for Lotus Notes: Please ask me for it. This e-mail (including any attachments) may contain information that is confidential or otherwise protected from disclosure and it is intended only for the addressees. If you are not the intended recipient, please note that any copying, distribution or other use of information contained in this e-mail (and its attachments) is not allowed. If you have received this e-mail in error, kindly notify us immediately by telephone or e-mail and delete the message (including any attachments) from your system. Please note that e-mail messages may contain computer viruses or other defects, may not be accurately replicated on other systems, or may be subject of unauthorized interception or other interference without the knowledge of sender or recipient. Tele2 only send and receive e-mails on the basis that Tele2 is not responsible for any such computer viruses, corruption or other interference or any consequences thereof. It ought to be obvious that my views do not represent my employer's views.
Update:
I modified the filter to read:
filter = [ "r|/dev/.*/by-path/.*|", "r|/dev/.*/by-id/.*|", "r|/dev/dm-*|" , "a|/dev/mapper/EMC*|", "a|/dev/cciss/*|" , "r/.*/" ]
and this made no difference.
What did work was to turn off the cache and delete the .cache file:
write_cache_state = 0
Then the discs were brought in as so:
PV Name /dev/mapper/EMC_00FD
PV UUID ctz8rd-ew58-0pU8-FssR-x9pR-KSA9-mI4flw PV Status allocatable Total PE / Free PE 539 / 0
Howevr, as soon as I activated the cache:write_cache_state = 1
then the discs in the volume group magically reverted to
PV Name /dev/dm-16
PV UUID ctz8rd-ew58-0pU8-FssR-x9pR-KSA9-mI4flw PV Status allocatable Total PE / Free PE 539 / 0
Any clues?
Quoted 571 lines · Simon Loewenthal/NL/Tele2 wrote:
I just this on a system with these in the lvm.conf:
preferred_names = [ "^/dev/mapper/EMC_", "^/dev/[hs]d", "^/dev/cciss" ] filter = [ "r|/dev/.*/by-path/.*|", "r|/dev/.*/by-id/.*|","a|/dev/mapper/EMC_*|", "a|/dev/cciss/*|" , "r/.*/" ]
After a pvscan and vgscan I did a vgimport. Guess what: A vgimport of the volume group ignored the filters and preferred devices and imported the vg with these PVs (only one PV shown for brevity, but the rest are similar ):
PV Name
/dev/dm-16PV UUID ctz8rd-ew58-0pU8-FssR-x9pR-KSA9-mI4flw PV Status allocatable Total PE / Free PE 539 / 0Unless,
/dev/dm-16is really some abstracted link back to a multipathed device but I cannot work out this bit:# ls -l /dev/mapper/ total 0 brw------- 1 root root 253, 17 Dec 30 15:11 EMC_0012 [SNIP]# dmsetup ls EMC_0103 (253, 13) EMC_00FF (253, 15) EMC_0101 (253, 14) EMC_00FD (253, 16) vg00-app052 (253, 3) vg00-xen (253, 2) vg00-usr (253, 0) EMC_0113 (253, 4) vg00-var (253, 1) EMC_0012 (253, 17) EMC_010F (253, 6) EMC_0109 (253, 10) EMC_0111 (253, 5) EMC_010D (253, 8) EMC_0107 (253, 11) EMC_010B (253, 9) EMC_0105 (253, 12)The output of pvscan and vgscan follow:
*PVSCAN*
# pvscan -vv Setting global/locking_type to 1 File-based locking selected. Setting global/locking_dir to /var/lock/lvm Wiping cache of LVM-capable devices Wiping internal VG cache Walking through all physical volumes /dev/cciss/c0d0: size is 286677120 sectors /dev/cciss/c0d0p1: size is 208782 sectors /dev/cciss/c0d0p1: size is 208782 sectors /dev/cciss/c0d0p1: No label detected /dev/cciss/c0d0p2: size is 4209030 sectors /dev/cciss/c0d0p2: size is 4209030 sectors /dev/cciss/c0d0p2: No label detected /dev/cciss/c0d0p3: size is 10490445 sectors /dev/cciss/c0d0p3: size is 10490445 sectors /dev/cciss/c0d0p3: No label detected /dev/cciss/c0d0p4: size is 271755540 sectors /dev/cciss/c0d0p4: size is 271755540 sectors /dev/cciss/c0d0p4: lvm2 label detected /dev/mapper/EMC_0113: size is 35358720 sectors /dev/mapper/EMC_0113: size is 35358720 sectors /dev/mapper/EMC_0113: lvm2 label detected /dev/mapper/EMC_0111: size is 35358720 sectors /dev/mapper/EMC_0111: size is 35358720 sectors /dev/mapper/EMC_0111: lvm2 label detected /dev/mapper/EMC_010F: size is 35358720 sectors /dev/mapper/EMC_010F: size is 35358720 sectors /dev/mapper/EMC_010F: lvm2 label detected /dev/mapper/EMC_010D: size is 35358720 sectors /dev/mapper/EMC_010D: size is 35358720 sectors /dev/mapper/EMC_010D: lvm2 label detected /dev/mapper/EMC_010B: size is 35358720 sectors /dev/mapper/EMC_010B: size is 35358720 sectors /dev/mapper/EMC_010B: lvm2 label detected /dev/mapper/EMC_0109: size is 35358720 sectors /dev/mapper/EMC_0109: size is 35358720 sectors /dev/mapper/EMC_0109: lvm2 label detected /dev/mapper/EMC_0107: size is 35358720 sectors /dev/mapper/EMC_0107: size is 35358720 sectors /dev/mapper/EMC_0107: lvm2 label detected /dev/mapper/EMC_0105: size is 35358720 sectors /dev/mapper/EMC_0105: size is 35358720 sectors /dev/mapper/EMC_0105: lvm2 label detected /dev/mapper/EMC_0103: size is 35358720 sectors /dev/mapper/EMC_0103: size is 35358720 sectors /dev/mapper/EMC_0103: lvm2 label detected /dev/mapper/EMC_0101: size is 35358720 sectors /dev/mapper/EMC_0101: size is 35358720 sectors /dev/mapper/EMC_0101: lvm2 label detected /dev/mapper/EMC_00FF: size is 35358720 sectors /dev/mapper/EMC_00FF: size is 35358720 sectors /dev/mapper/EMC_00FF: lvm2 label detected /dev/mapper/EMC_00FD: size is 35358720 sectors /dev/mapper/EMC_00FD: size is 35358720 sectors /dev/mapper/EMC_00FD: lvm2 label detected /dev/mapper/EMC_0012: size is 9600 sectors /dev/mapper/EMC_0012: size is 9600 sectors /dev/mapper/EMC_0012: No label detected /dev/mapper/EMC_0113: lvm2 label detected /dev/mapper/EMC_0111: lvm2 label detected /dev/mapper/EMC_010F: lvm2 label detected /dev/mapper/EMC_010D: lvm2 label detected /dev/mapper/EMC_010B: lvm2 label detected /dev/mapper/EMC_0109: lvm2 label detected /dev/mapper/EMC_0107: lvm2 label detected /dev/mapper/EMC_0105: lvm2 label detected /dev/mapper/EMC_0103: lvm2 label detected /dev/mapper/EMC_0101: lvm2 label detected /dev/mapper/EMC_00FF: lvm2 label detected /dev/mapper/EMC_00FD: lvm2 label detected /dev/mapper/EMC_0113: lvm2 label detected /dev/mapper/EMC_0111: lvm2 label detected /dev/mapper/EMC_010F: lvm2 label detected /dev/mapper/EMC_010D: lvm2 label detected /dev/mapper/EMC_010B: lvm2 label detected /dev/mapper/EMC_0109: lvm2 label detected /dev/mapper/EMC_0107: lvm2 label detected /dev/mapper/EMC_0105: lvm2 label detected /dev/mapper/EMC_0103: lvm2 label detected /dev/mapper/EMC_0101: lvm2 label detected /dev/mapper/EMC_00FF: lvm2 label detected /dev/mapper/EMC_00FD: lvm2 label detected /dev/mapper/EMC_0113: lvm2 label detected /dev/mapper/EMC_0111: lvm2 label detected /dev/mapper/EMC_010F: lvm2 label detected /dev/mapper/EMC_010D: lvm2 label detected /dev/mapper/EMC_010B: lvm2 label detected /dev/mapper/EMC_0109: lvm2 label detected /dev/mapper/EMC_0107: lvm2 label detected /dev/mapper/EMC_0105: lvm2 label detected /dev/mapper/EMC_0103: lvm2 label detected /dev/mapper/EMC_0101: lvm2 label detected /dev/mapper/EMC_00FF: lvm2 label detected /dev/mapper/EMC_00FD: lvm2 label detected /dev/mapper/EMC_0113: lvm2 label detected /dev/mapper/EMC_0111: lvm2 label detected /dev/mapper/EMC_010F: lvm2 label detected /dev/mapper/EMC_010D: lvm2 label detected /dev/mapper/EMC_010B: lvm2 label detected /dev/mapper/EMC_0109: lvm2 label detected /dev/mapper/EMC_0107: lvm2 label detected /dev/mapper/EMC_0105: lvm2 label detected /dev/mapper/EMC_0103: lvm2 label detected /dev/mapper/EMC_0101: lvm2 label detected /dev/mapper/EMC_00FF: lvm2 label detected /dev/mapper/EMC_00FD: lvm2 label detected /dev/mapper/EMC_0113: lvm2 label detected /dev/mapper/EMC_0111: lvm2 label detected /dev/mapper/EMC_010F: lvm2 label detected /dev/mapper/EMC_010D: lvm2 label detected /dev/mapper/EMC_010B: lvm2 label detected /dev/mapper/EMC_0109: lvm2 label detected /dev/mapper/EMC_0107: lvm2 label detected /dev/mapper/EMC_0105: lvm2 label detected /dev/mapper/EMC_0103: lvm2 label detected /dev/mapper/EMC_0101: lvm2 label detected /dev/mapper/EMC_00FF: lvm2 label detected /dev/mapper/EMC_00FD: lvm2 label detected /dev/mapper/EMC_0113: lvm2 label detected /dev/mapper/EMC_0111: lvm2 label detected /dev/mapper/EMC_010F: lvm2 label detected /dev/mapper/EMC_010D: lvm2 label detected /dev/mapper/EMC_010B: lvm2 label detected /dev/mapper/EMC_0109: lvm2 label detected /dev/mapper/EMC_0107: lvm2 label detected /dev/mapper/EMC_0105: lvm2 label detected /dev/mapper/EMC_0103: lvm2 label detected /dev/mapper/EMC_0101: lvm2 label detected /dev/mapper/EMC_00FF: lvm2 label detected /dev/mapper/EMC_00FD: lvm2 label detected /dev/mapper/EMC_0113: lvm2 label detected /dev/mapper/EMC_0111: lvm2 label detected /dev/mapper/EMC_010F: lvm2 label detected /dev/mapper/EMC_010D: lvm2 label detected /dev/mapper/EMC_010B: lvm2 label detected /dev/mapper/EMC_0109: lvm2 label detected /dev/mapper/EMC_0107: lvm2 label detected /dev/mapper/EMC_0105: lvm2 label detected /dev/mapper/EMC_0103: lvm2 label detected /dev/mapper/EMC_0101: lvm2 label detected /dev/mapper/EMC_00FF: lvm2 label detected /dev/mapper/EMC_00FD: lvm2 label detected /dev/mapper/EMC_0113: lvm2 label detected /dev/mapper/EMC_0111: lvm2 label detected /dev/mapper/EMC_010F: lvm2 label detected /dev/mapper/EMC_010D: lvm2 label detected /dev/mapper/EMC_010B: lvm2 label detected /dev/mapper/EMC_0109: lvm2 label detected /dev/mapper/EMC_0107: lvm2 label detected /dev/mapper/EMC_0105: lvm2 label detected /dev/mapper/EMC_0103: lvm2 label detected /dev/mapper/EMC_0101: lvm2 label detected /dev/mapper/EMC_00FF: lvm2 label detected /dev/mapper/EMC_00FD: lvm2 label detected /dev/mapper/EMC_0113: lvm2 label detected /dev/mapper/EMC_0111: lvm2 label detected /dev/mapper/EMC_010F: lvm2 label detected /dev/mapper/EMC_010D: lvm2 label detected /dev/mapper/EMC_010B: lvm2 label detected /dev/mapper/EMC_0109: lvm2 label detected /dev/mapper/EMC_0107: lvm2 label detected /dev/mapper/EMC_0105: lvm2 label detected /dev/mapper/EMC_0103: lvm2 label detected /dev/mapper/EMC_0101: lvm2 label detected /dev/mapper/EMC_00FF: lvm2 label detected /dev/mapper/EMC_00FD: lvm2 label detected /dev/mapper/EMC_0113: lvm2 label detected /dev/mapper/EMC_0111: lvm2 label detected /dev/mapper/EMC_010F: lvm2 label detected /dev/mapper/EMC_010D: lvm2 label detected /dev/mapper/EMC_010B: lvm2 label detected /dev/mapper/EMC_0109: lvm2 label detected /dev/mapper/EMC_0107: lvm2 label detected /dev/mapper/EMC_0105: lvm2 label detected /dev/mapper/EMC_0103: lvm2 label detected /dev/mapper/EMC_0101: lvm2 label detected /dev/mapper/EMC_00FF: lvm2 label detected /dev/mapper/EMC_00FD: lvm2 label detected /dev/mapper/EMC_0113: lvm2 label detected /dev/mapper/EMC_0111: lvm2 label detected /dev/mapper/EMC_010F: lvm2 label detected /dev/mapper/EMC_010D: lvm2 label detected /dev/mapper/EMC_010B: lvm2 label detected /dev/mapper/EMC_0109: lvm2 label detected /dev/mapper/EMC_0107: lvm2 label detected /dev/mapper/EMC_0105: lvm2 label detected /dev/mapper/EMC_0103: lvm2 label detected /dev/mapper/EMC_0101: lvm2 label detected /dev/mapper/EMC_00FF: lvm2 label detected /dev/mapper/EMC_00FD: lvm2 label detected /dev/mapper/EMC_0113: lvm2 label detected /dev/mapper/EMC_0111: lvm2 label detected /dev/mapper/EMC_010F: lvm2 label detected /dev/mapper/EMC_010D: lvm2 label detected /dev/mapper/EMC_010B: lvm2 label detected /dev/mapper/EMC_0109: lvm2 label detected /dev/mapper/EMC_0107: lvm2 label detected /dev/mapper/EMC_0105: lvm2 label detected /dev/mapper/EMC_0103: lvm2 label detected /dev/mapper/EMC_0101: lvm2 label detected /dev/mapper/EMC_00FF: lvm2 label detected /dev/mapper/EMC_00FD: lvm2 label detected /dev/mapper/EMC_0113: lvm2 label detected /dev/mapper/EMC_0111: lvm2 label detected /dev/mapper/EMC_010F: lvm2 label detected /dev/mapper/EMC_010D: lvm2 label detected /dev/mapper/EMC_010B: lvm2 label detected /dev/mapper/EMC_0109: lvm2 label detected /dev/mapper/EMC_0107: lvm2 label detected /dev/mapper/EMC_0105: lvm2 label detected /dev/mapper/EMC_0103: lvm2 label detected /dev/mapper/EMC_0101: lvm2 label detected /dev/mapper/EMC_00FF: lvm2 label detected /dev/mapper/EMC_00FD: lvm2 label detected /dev/cciss/c0d0p4: lvm2 label detected /dev/cciss/c0d0p4: lvm2 label detected PV /dev/mapper/EMC_0113 is in exported VG vg_mds [16.84 GB / 0 free] PV /dev/mapper/EMC_0111 is in exported VG vg_mds [16.84 GB / 0 free] PV /dev/mapper/EMC_010F is in exported VG vg_mds [16.84 GB / 0 free] PV /dev/mapper/EMC_010D is in exported VG vg_mds [16.84 GB / 0 free] PV /dev/mapper/EMC_010B is in exported VG vg_mds [16.84 GB / 0 free] PV /dev/mapper/EMC_0109 is in exported VG vg_mds [16.84 GB / 0 free] PV /dev/mapper/EMC_0107 is in exported VG vg_mds [16.84 GB / 0 free] PV /dev/mapper/EMC_0105 is in exported VG vg_mds [16.84 GB / 0 free] PV /dev/mapper/EMC_0103 is in exported VG vg_mds [16.84 GB / 0 free] PV /dev/mapper/EMC_0101 is in exported VG vg_mds [16.84 GB / 0 free] PV /dev/mapper/EMC_00FF is in exported VG vg_mds [16.84 GB / 0 free] PV /dev/mapper/EMC_00FD is in exported VG vg_mds [16.84 GB / 0 free] PV /dev/cciss/c0d0p4 VG vg00 lvm2 [129.58 GB / 44.00 MB free] Total: 13 [331.71 GB] / in use: 13 [331.71 GB] / in no VG: 0 [0 ]*VGSCAN
*# vgscan -vv
Setting global/locking_type to 1
File-based locking selected.
Setting global/locking_dir to/var/lock/lvm
Wiping cache of LVM-capable devices
Wiping internal VG cache
Reading all physical volumes. This may take a while...
Finding all volume groups
/dev/cciss/c0d0: size is 286677120 sectors/dev/cciss/c0d0p1: size is 208782 sectors/dev/cciss/c0d0p1: size is 208782 sectors/dev/cciss/c0d0p1: No label detected/dev/cciss/c0d0p2: size is 4209030 sectors/dev/cciss/c0d0p2: size is 4209030 sectors/dev/cciss/c0d0p2: No label detected/dev/cciss/c0d0p3: size is 10490445 sectors/dev/cciss/c0d0p3: size is 10490445 sectors/dev/cciss/c0d0p3: No label detected/dev/cciss/c0d0p4: size is 271755540 sectors/dev/cciss/c0d0p4: size is 271755540 sectors/dev/cciss/c0d0p4: lvm2 label detected/dev/mapper/EMC_0113: size is 35358720 sectors/dev/mapper/EMC_0113: size is 35358720 sectors/dev/mapper/EMC_0113: lvm2 label detected/dev/mapper/EMC_0111: size is 35358720 sectors/dev/mapper/EMC_0111: size is 35358720 sectors/dev/mapper/EMC_0111: lvm2 label detected/dev/mapper/EMC_010F: size is 35358720 sectors/dev/mapper/EMC_010F: size is 35358720 sectors/dev/mapper/EMC_010F: lvm2 label detected/dev/mapper/EMC_010D: size is 35358720 sectors/dev/mapper/EMC_010D: size is 35358720 sectors/dev/mapper/EMC_010D: lvm2 label detected/dev/mapper/EMC_010B: size is 35358720 sectors/dev/mapper/EMC_010B: size is 35358720 sectors/dev/mapper/EMC_010B: lvm2 label detected/dev/mapper/EMC_0109: size is 35358720 sectors/dev/mapper/EMC_0109: size is 35358720 sectors/dev/mapper/EMC_0109: lvm2 label detected/dev/mapper/EMC_0107: size is 35358720 sectors/dev/mapper/EMC_0107: size is 35358720 sectors/dev/mapper/EMC_0107: lvm2 label detected/dev/mapper/EMC_0105: size is 35358720 sectors/dev/mapper/EMC_0105: size is 35358720 sectors/dev/mapper/EMC_0105: lvm2 label detected/dev/mapper/EMC_0103: size is 35358720 sectors/dev/mapper/EMC_0103: size is 35358720 sectors/dev/mapper/EMC_0103: lvm2 label detected/dev/mapper/EMC_0101: size is 35358720 sectors/dev/mapper/EMC_0101: size is 35358720 sectors/dev/mapper/EMC_0101: lvm2 label detected/dev/mapper/EMC_00FF: size is 35358720 sectors/dev/mapper/EMC_00FF: size is 35358720 sectors/dev/mapper/EMC_00FF: lvm2 label detected/dev/mapper/EMC_00FD: size is 35358720 sectors/dev/mapper/EMC_00FD: size is 35358720 sectors/dev/mapper/EMC_00FD: lvm2 label detected/dev/mapper/EMC_0012: size is 9600 sectors/dev/mapper/EMC_0012: size is 9600 sectors/dev/mapper/EMC_0012: No label detected
Locking/var/lock/lvm/V_vg_mdsRB
Finding volume group "vg_mds"
/dev/mapper/EMC_0113: lvm2 label detected/dev/mapper/EMC_0111: lvm2 label detected/dev/mapper/EMC_010F: lvm2 label detected/dev/mapper/EMC_010D: lvm2 label detected/dev/mapper/EMC_010B: lvm2 label detected/dev/mapper/EMC_0109: lvm2 label detected/dev/mapper/EMC_0107: lvm2 label detected/dev/mapper/EMC_0105: lvm2 label detected/dev/mapper/EMC_0103: lvm2 label detected/dev/mapper/EMC_0101: lvm2 label detected/dev/mapper/EMC_00FF: lvm2 label detected/dev/mapper/EMC_00FD: lvm2 label detected/dev/mapper/EMC_0113: lvm2 label detected/dev/mapper/EMC_0111: lvm2 label detected/dev/mapper/EMC_010F: lvm2 label detected/dev/mapper/EMC_010D: lvm2 label detected/dev/mapper/EMC_010B: lvm2 label detected/dev/mapper/EMC_0109: lvm2 label detected/dev/mapper/EMC_0107: lvm2 label detected/dev/mapper/EMC_0105: lvm2 label detected/dev/mapper/EMC_0103: lvm2 label detected/dev/mapper/EMC_0101: lvm2 label detected/dev/mapper/EMC_00FF: lvm2 label detected/dev/mapper/EMC_00FD: lvm2 label detected/dev/mapper/EMC_0113: lvm2 label detected/dev/mapper/EMC_0111: lvm2 label detected/dev/mapper/EMC_010F: lvm2 label detected/dev/mapper/EMC_010D: lvm2 label detected/dev/mapper/EMC_010B: lvm2 label detected/dev/mapper/EMC_0109: lvm2 label detected/dev/mapper/EMC_0107: lvm2 label detected/dev/mapper/EMC_0105: lvm2 label detected/dev/mapper/EMC_0103: lvm2 label detected/dev/mapper/EMC_0101: lvm2 label detected/dev/mapper/EMC_00FF: lvm2 label detected/dev/mapper/EMC_00FD: lvm2 label detected/dev/mapper/EMC_0113: lvm2 label detected/dev/mapper/EMC_0111: lvm2 label detected/dev/mapper/EMC_010F: lvm2 label detected/dev/mapper/EMC_010D: lvm2 label detected/dev/mapper/EMC_010B: lvm2 label detected/dev/mapper/EMC_0109: lvm2 label detected/dev/mapper/EMC_0107: lvm2 label detected/dev/mapper/EMC_0105: lvm2 label detected/dev/mapper/EMC_0103: lvm2 label detected/dev/mapper/EMC_0101: lvm2 label detected/dev/mapper/EMC_00FF: lvm2 label detected/dev/mapper/EMC_00FD: lvm2 label detected/dev/mapper/EMC_0113: lvm2 label detected/dev/mapper/EMC_0111: lvm2 label detected/dev/mapper/EMC_010F: lvm2 label detected/dev/mapper/EMC_010D: lvm2 label detected/dev/mapper/EMC_010B: lvm2 label detected/dev/mapper/EMC_0109: lvm2 label detected/dev/mapper/EMC_0107: lvm2 label detected/dev/mapper/EMC_0105: lvm2 label detected/dev/mapper/EMC_0103: lvm2 label detected/dev/mapper/EMC_0101: lvm2 label detected/dev/mapper/EMC_00FF: lvm2 label detected/dev/mapper/EMC_00FD: lvm2 label detected/dev/mapper/EMC_0113: lvm2 label detected/dev/mapper/EMC_0111: lvm2 label detected/dev/mapper/EMC_010F: lvm2 label detected/dev/mapper/EMC_010D: lvm2 label detected/dev/mapper/EMC_010B: lvm2 label detected/dev/mapper/EMC_0109: lvm2 label detected/dev/mapper/EMC_0107: lvm2 label detected/dev/mapper/EMC_0105: lvm2 label detected/dev/mapper/EMC_0103: lvm2 label detected/dev/mapper/EMC_0101: lvm2 label detected/dev/mapper/EMC_00FF: lvm2 label detected/dev/mapper/EMC_00FD: lvm2 label detected/dev/mapper/EMC_0113: lvm2 label detected/dev/mapper/EMC_0111: lvm2 label detected/dev/mapper/EMC_010F: lvm2 label detected/dev/mapper/EMC_010D: lvm2 label detected/dev/mapper/EMC_010B: lvm2 label detected/dev/mapper/EMC_0109: lvm2 label detected/dev/mapper/EMC_0107: lvm2 label detected/dev/mapper/EMC_0105: lvm2 label detected/dev/mapper/EMC_0103: lvm2 label detected/dev/mapper/EMC_0101: lvm2 label detected/dev/mapper/EMC_00FF: lvm2 label detected/dev/mapper/EMC_00FD: lvm2 label detected/dev/mapper/EMC_0113: lvm2 label detected/dev/mapper/EMC_0111: lvm2 label detected/dev/mapper/EMC_010F: lvm2 label detected/dev/mapper/EMC_010D: lvm2 label detected/dev/mapper/EMC_010B: lvm2 label detected/dev/mapper/EMC_0109: lvm2 label detected/dev/mapper/EMC_0107: lvm2 label detected/dev/mapper/EMC_0105: lvm2 label detected/dev/mapper/EMC_0103: lvm2 label detected/dev/mapper/EMC_0101: lvm2 label detected/dev/mapper/EMC_00FF: lvm2 label detected/dev/mapper/EMC_00FD: lvm2 label detected/dev/mapper/EMC_0113: lvm2 label detected/dev/mapper/EMC_0111: lvm2 label detected/dev/mapper/EMC_010F: lvm2 label detected/dev/mapper/EMC_010D: lvm2 label detected/dev/mapper/EMC_010B: lvm2 label detected/dev/mapper/EMC_0109: lvm2 label detected/dev/mapper/EMC_0107: lvm2 label detected/dev/mapper/EMC_0105: lvm2 label detected/dev/mapper/EMC_0103: lvm2 label detected/dev/mapper/EMC_0101: lvm2 label detected/dev/mapper/EMC_00FF: lvm2 label detected/dev/mapper/EMC_00FD: lvm2 label detected/dev/mapper/EMC_0113: lvm2 label detected/dev/mapper/EMC_0111: lvm2 label detected/dev/mapper/EMC_010F: lvm2 label detected/dev/mapper/EMC_010D: lvm2 label detected/dev/mapper/EMC_010B: lvm2 label detected/dev/mapper/EMC_0109: lvm2 label detected/dev/mapper/EMC_0107: lvm2 label detected/dev/mapper/EMC_0105: lvm2 label detected/dev/mapper/EMC_0103: lvm2 label detected/dev/mapper/EMC_0101: lvm2 label detected/dev/mapper/EMC_00FF: lvm2 label detected/dev/mapper/EMC_00FD: lvm2 label detected/dev/mapper/EMC_0113: lvm2 label detected/dev/mapper/EMC_0111: lvm2 label detected/dev/mapper/EMC_010F: lvm2 label detected/dev/mapper/EMC_010D: lvm2 label detected/dev/mapper/EMC_010B: lvm2 label detected/dev/mapper/EMC_0109: lvm2 label detected/dev/mapper/EMC_0107: lvm2 label detected/dev/mapper/EMC_0105: lvm2 label detected/dev/mapper/EMC_0103: lvm2 label detected/dev/mapper/EMC_0101: lvm2 label detected/dev/mapper/EMC_00FF: lvm2 label detected/dev/mapper/EMC_00FD: lvm2 label detected/dev/mapper/EMC_0113: lvm2 label detected/dev/mapper/EMC_0111: lvm2 label detected/dev/mapper/EMC_010F: lvm2 label detected/dev/mapper/EMC_010D: lvm2 label detected/dev/mapper/EMC_010B: lvm2 label detected/dev/mapper/EMC_0109: lvm2 label detected/dev/mapper/EMC_0107: lvm2 label detected/dev/mapper/EMC_0105: lvm2 label detected/dev/mapper/EMC_0103: lvm2 label detected/dev/mapper/EMC_0101: lvm2 label detected/dev/mapper/EMC_00FF: lvm2 label detected/dev/mapper/EMC_00FD: lvm2 label detected/dev/mapper/EMC_0113: lvm2 label detected/dev/mapper/EMC_0111: lvm2 label detected/dev/mapper/EMC_010F: lvm2 label detected/dev/mapper/EMC_010D: lvm2 label detected/dev/mapper/EMC_010B: lvm2 label detected/dev/mapper/EMC_0109: lvm2 label detected/dev/mapper/EMC_0107: lvm2 label detected/dev/mapper/EMC_0105: lvm2 label detected/dev/mapper/EMC_0103: lvm2 label detected/dev/mapper/EMC_0101: lvm2 label detected/dev/mapper/EMC_00FF: lvm2 label detected/dev/mapper/EMC_00FD: lvm2 label detected
Found exported volume group "vg_mds" using metadata type lvm2
Unlocking/var/lock/lvm/V_vg_mds
Locking/var/lock/lvm/V_vg00RB
Finding volume group "vg00"
/dev/cciss/c0d0p4: lvm2 label detected/dev/cciss/c0d0p4: lvm2 label detected
Found volume group "vg00" using metadata type lvm2
Unlocking/var/lock/lvm/V_vg00Quoted 61 lines · brem belguebli
Hi,
Never had no problem with it.
The only problem I've hit was due to the binding file being, by default, located in
/var/lib/multipath, which is in my setup on a separate LV than /, during boot time the devices were not correctly created.Just had to switch the binding file to /etc and now no more problem.
extract of my
/etc/multipath.conf:defaults {
...
flush_on_last_delyes
user_friendly_namesyes
bindings_file"/etc/multipath_bindings"
}2010/1/4 Bryn M. Reeves <[email protected]>:
Quoted 22 lines · brem belguebli
Quoted 4 lines
Hi,
Quoted 10 lines
see man 5 lvm.conf there is an option called
preferred_nameswhich is well explainedIt'll instruct lvm to use the
preferred_namesyou configured in the lvm.conf file if they existie :
preferred_names= "/dev/mpath/" will use/dev/mpath/XXXinstead of/dev/mapper/XXXIt's best not to use the symlinks in
/dev/mpath- they are not always reliable. Use the device nodes created in/dev/mapperinstead.Regards,
Bryn.Quoted 8 lines
_______________________________________________
linux-lvm mailing list
[email protected]
https://www.redhat.com/mailman/listinfo/linux-lvm
read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/_______________________________________________
linux-lvm mailing list
[email protected]
https://www.redhat.com/mailman/listinfo/linux-lvm
read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
Signature · 8 lines
Simon Loewenthal/Tele2 GSM: +31 6 2000 5427 ******** IMPORTANT NOTICE ******** Please repect the X-Reply to klunky.co.uk. PGP available 0xD86A5A17. S/MIME PKCS12 key available for Lotus Notes: Please ask me for it. This e-mail (including any attachments) may contain information that is confidential or otherwise protected from disclosure and it is intended only for the addressees. If you are not the intended recipient, please note that any copying, distribution or other use of information contained in this e-mail (and its attachments) is not allowed. If you have received this e-mail in error, kindly notify us immediately by telephone or e-mail and delete the message (including any attachments) from your system. Please note that e-mail messages may contain computer viruses or other defects, may not be accurately replicated on other systems, or may be subject of unauthorized interception or other interference without the knowledge of sender or recipient. Tele2 only send and receive e-mails on the basis that Tele2 is not responsible for any such computer viruses, corruption or other interference or any consequences thereof. It ought to be obvious that my views do not represent my employer's views.
More info:
I thought for a moment that LVM might cache the devices somewhere other than in the cache but am unsure as per output from strace :-
# grep -i cach typescript.*
typescript.pvscan:open("/etc/ld.so.cache", O_RDONLY) = 3
typescript.pvscan:open("/usr/lib64/gconv/gconv-modules.cache", O_RDONLY) = 3
typescript.pvscan:stat("/etc/lvm/.cache", 0x7fff2193b6d0) = -1 ENOENT
(No such file or directory)
typescript.vgscan:open("/etc/ld.so.cache", O_RDONLY) = 3
typescript.vgscan:open("/usr/lib64/gconv/gconv-modules.cache", O_RDONLY) = 3
typescript.vgscan:stat("/etc/lvm/.cache", 0x7fff8d6ad440) = -1 ENOENT
(No such file or directory)Quoted 611 lines · Simon Loewenthal/NL/Tele2 wrote:
Update:
I modified the filter to read:
filter = [ "r|/dev/.*/by-path/.*|", "r|/dev/.*/by-id/.*|", "r|/dev/dm-*|" , "a|/dev/mapper/EMC*|", "a|/dev/cciss/*|" , "r/.*/" ]and this made no difference.
What did work was to turn off the cache and delete the .cache file:
write_cache_state= 0Then the discs were brought in as so:
PV Name/dev/mapper/EMC_00FDPV UUID ctz8rd-ew58-0pU8-FssR-x9pR-KSA9-mI4flw PV Status allocatable Total PE / Free PE 539 / 0Howevr, as soon as I activated the cache:
write_cache_state= 1
then the discs in the volume group magically reverted toPV Name
/dev/dm-16PV UUID ctz8rd-ew58-0pU8-FssR-x9pR-KSA9-mI4flw PV Status allocatable Total PE / Free PE 539 / 0Any clues?
Quoted 577 lines · Simon Loewenthal/NL/Tele2 wrote:
I just this on a system with these in the lvm.conf:
preferred_names = [ "^/dev/mapper/EMC_", "^/dev/[hs]d", "^/dev/cciss" ] filter = [ "r|/dev/.*/by-path/.*|", "r|/dev/.*/by-id/.*|","a|/dev/mapper/EMC_*|", "a|/dev/cciss/*|" , "r/.*/" ]
After a pvscan and vgscan I did a vgimport. Guess what: A vgimport of the volume group ignored the filters and preferred devices and imported the vg with these PVs (only one PV shown for brevity, but the rest are similar ):
PV Name
/dev/dm-16PV UUID ctz8rd-ew58-0pU8-FssR-x9pR-KSA9-mI4flw PV Status allocatable Total PE / Free PE 539 / 0Unless,
/dev/dm-16is really some abstracted link back to a multipathed device but I cannot work out this bit:# ls -l /dev/mapper/ total 0 brw------- 1 root root 253, 17 Dec 30 15:11 EMC_0012 [SNIP]# dmsetup ls EMC_0103 (253, 13) EMC_00FF (253, 15) EMC_0101 (253, 14) EMC_00FD (253, 16) vg00-app052 (253, 3) vg00-xen (253, 2) vg00-usr (253, 0) EMC_0113 (253, 4) vg00-var (253, 1) EMC_0012 (253, 17) EMC_010F (253, 6) EMC_0109 (253, 10) EMC_0111 (253, 5) EMC_010D (253, 8) EMC_0107 (253, 11) EMC_010B (253, 9) EMC_0105 (253, 12)The output of pvscan and vgscan follow:
*PVSCAN*
# pvscan -vv Setting global/locking_type to 1 File-based locking selected. Setting global/locking_dir to /var/lock/lvm Wiping cache of LVM-capable devices Wiping internal VG cache Walking through all physical volumes /dev/cciss/c0d0: size is 286677120 sectors /dev/cciss/c0d0p1: size is 208782 sectors /dev/cciss/c0d0p1: size is 208782 sectors /dev/cciss/c0d0p1: No label detected /dev/cciss/c0d0p2: size is 4209030 sectors /dev/cciss/c0d0p2: size is 4209030 sectors /dev/cciss/c0d0p2: No label detected /dev/cciss/c0d0p3: size is 10490445 sectors /dev/cciss/c0d0p3: size is 10490445 sectors /dev/cciss/c0d0p3: No label detected /dev/cciss/c0d0p4: size is 271755540 sectors /dev/cciss/c0d0p4: size is 271755540 sectors /dev/cciss/c0d0p4: lvm2 label detected /dev/mapper/EMC_0113: size is 35358720 sectors /dev/mapper/EMC_0113: size is 35358720 sectors /dev/mapper/EMC_0113: lvm2 label detected /dev/mapper/EMC_0111: size is 35358720 sectors /dev/mapper/EMC_0111: size is 35358720 sectors /dev/mapper/EMC_0111: lvm2 label detected /dev/mapper/EMC_010F: size is 35358720 sectors /dev/mapper/EMC_010F: size is 35358720 sectors /dev/mapper/EMC_010F: lvm2 label detected /dev/mapper/EMC_010D: size is 35358720 sectors /dev/mapper/EMC_010D: size is 35358720 sectors /dev/mapper/EMC_010D: lvm2 label detected /dev/mapper/EMC_010B: size is 35358720 sectors /dev/mapper/EMC_010B: size is 35358720 sectors /dev/mapper/EMC_010B: lvm2 label detected /dev/mapper/EMC_0109: size is 35358720 sectors /dev/mapper/EMC_0109: size is 35358720 sectors /dev/mapper/EMC_0109: lvm2 label detected /dev/mapper/EMC_0107: size is 35358720 sectors /dev/mapper/EMC_0107: size is 35358720 sectors /dev/mapper/EMC_0107: lvm2 label detected /dev/mapper/EMC_0105: size is 35358720 sectors /dev/mapper/EMC_0105: size is 35358720 sectors /dev/mapper/EMC_0105: lvm2 label detected /dev/mapper/EMC_0103: size is 35358720 sectors /dev/mapper/EMC_0103: size is 35358720 sectors /dev/mapper/EMC_0103: lvm2 label detected /dev/mapper/EMC_0101: size is 35358720 sectors /dev/mapper/EMC_0101: size is 35358720 sectors /dev/mapper/EMC_0101: lvm2 label detected /dev/mapper/EMC_00FF: size is 35358720 sectors /dev/mapper/EMC_00FF: size is 35358720 sectors /dev/mapper/EMC_00FF: lvm2 label detected /dev/mapper/EMC_00FD: size is 35358720 sectors /dev/mapper/EMC_00FD: size is 35358720 sectors /dev/mapper/EMC_00FD: lvm2 label detected /dev/mapper/EMC_0012: size is 9600 sectors /dev/mapper/EMC_0012: size is 9600 sectors /dev/mapper/EMC_0012: No label detected /dev/mapper/EMC_0113: lvm2 label detected /dev/mapper/EMC_0111: lvm2 label detected /dev/mapper/EMC_010F: lvm2 label detected /dev/mapper/EMC_010D: lvm2 label detected /dev/mapper/EMC_010B: lvm2 label detected /dev/mapper/EMC_0109: lvm2 label detected /dev/mapper/EMC_0107: lvm2 label detected /dev/mapper/EMC_0105: lvm2 label detected /dev/mapper/EMC_0103: lvm2 label detected /dev/mapper/EMC_0101: lvm2 label detected /dev/mapper/EMC_00FF: lvm2 label detected /dev/mapper/EMC_00FD: lvm2 label detected /dev/mapper/EMC_0113: lvm2 label detected /dev/mapper/EMC_0111: lvm2 label detected /dev/mapper/EMC_010F: lvm2 label detected /dev/mapper/EMC_010D: lvm2 label detected /dev/mapper/EMC_010B: lvm2 label detected /dev/mapper/EMC_0109: lvm2 label detected /dev/mapper/EMC_0107: lvm2 label detected /dev/mapper/EMC_0105: lvm2 label detected /dev/mapper/EMC_0103: lvm2 label detected /dev/mapper/EMC_0101: lvm2 label detected /dev/mapper/EMC_00FF: lvm2 label detected /dev/mapper/EMC_00FD: lvm2 label detected /dev/mapper/EMC_0113: lvm2 label detected /dev/mapper/EMC_0111: lvm2 label detected /dev/mapper/EMC_010F: lvm2 label detected /dev/mapper/EMC_010D: lvm2 label detected /dev/mapper/EMC_010B: lvm2 label detected /dev/mapper/EMC_0109: lvm2 label detected /dev/mapper/EMC_0107: lvm2 label detected /dev/mapper/EMC_0105: lvm2 label detected /dev/mapper/EMC_0103: lvm2 label detected /dev/mapper/EMC_0101: lvm2 label detected /dev/mapper/EMC_00FF: lvm2 label detected /dev/mapper/EMC_00FD: lvm2 label detected /dev/mapper/EMC_0113: lvm2 label detected /dev/mapper/EMC_0111: lvm2 label detected /dev/mapper/EMC_010F: lvm2 label detected /dev/mapper/EMC_010D: lvm2 label detected /dev/mapper/EMC_010B: lvm2 label detected /dev/mapper/EMC_0109: lvm2 label detected /dev/mapper/EMC_0107: lvm2 label detected /dev/mapper/EMC_0105: lvm2 label detected /dev/mapper/EMC_0103: lvm2 label detected /dev/mapper/EMC_0101: lvm2 label detected /dev/mapper/EMC_00FF: lvm2 label detected /dev/mapper/EMC_00FD: lvm2 label detected /dev/mapper/EMC_0113: lvm2 label detected /dev/mapper/EMC_0111: lvm2 label detected /dev/mapper/EMC_010F: lvm2 label detected /dev/mapper/EMC_010D: lvm2 label detected /dev/mapper/EMC_010B: lvm2 label detected /dev/mapper/EMC_0109: lvm2 label detected /dev/mapper/EMC_0107: lvm2 label detected /dev/mapper/EMC_0105: lvm2 label detected /dev/mapper/EMC_0103: lvm2 label detected /dev/mapper/EMC_0101: lvm2 label detected /dev/mapper/EMC_00FF: lvm2 label detected /dev/mapper/EMC_00FD: lvm2 label detected /dev/mapper/EMC_0113: lvm2 label detected /dev/mapper/EMC_0111: lvm2 label detected /dev/mapper/EMC_010F: lvm2 label detected /dev/mapper/EMC_010D: lvm2 label detected /dev/mapper/EMC_010B: lvm2 label detected /dev/mapper/EMC_0109: lvm2 label detected /dev/mapper/EMC_0107: lvm2 label detected /dev/mapper/EMC_0105: lvm2 label detected /dev/mapper/EMC_0103: lvm2 label detected /dev/mapper/EMC_0101: lvm2 label detected /dev/mapper/EMC_00FF: lvm2 label detected /dev/mapper/EMC_00FD: lvm2 label detected /dev/mapper/EMC_0113: lvm2 label detected /dev/mapper/EMC_0111: lvm2 label detected /dev/mapper/EMC_010F: lvm2 label detected /dev/mapper/EMC_010D: lvm2 label detected /dev/mapper/EMC_010B: lvm2 label detected /dev/mapper/EMC_0109: lvm2 label detected /dev/mapper/EMC_0107: lvm2 label detected /dev/mapper/EMC_0105: lvm2 label detected /dev/mapper/EMC_0103: lvm2 label detected /dev/mapper/EMC_0101: lvm2 label detected /dev/mapper/EMC_00FF: lvm2 label detected /dev/mapper/EMC_00FD: lvm2 label detected /dev/mapper/EMC_0113: lvm2 label detected /dev/mapper/EMC_0111: lvm2 label detected /dev/mapper/EMC_010F: lvm2 label detected /dev/mapper/EMC_010D: lvm2 label detected /dev/mapper/EMC_010B: lvm2 label detected /dev/mapper/EMC_0109: lvm2 label detected /dev/mapper/EMC_0107: lvm2 label detected /dev/mapper/EMC_0105: lvm2 label detected /dev/mapper/EMC_0103: lvm2 label detected /dev/mapper/EMC_0101: lvm2 label detected /dev/mapper/EMC_00FF: lvm2 label detected /dev/mapper/EMC_00FD: lvm2 label detected /dev/mapper/EMC_0113: lvm2 label detected /dev/mapper/EMC_0111: lvm2 label detected /dev/mapper/EMC_010F: lvm2 label detected /dev/mapper/EMC_010D: lvm2 label detected /dev/mapper/EMC_010B: lvm2 label detected /dev/mapper/EMC_0109: lvm2 label detected /dev/mapper/EMC_0107: lvm2 label detected /dev/mapper/EMC_0105: lvm2 label detected /dev/mapper/EMC_0103: lvm2 label detected /dev/mapper/EMC_0101: lvm2 label detected /dev/mapper/EMC_00FF: lvm2 label detected /dev/mapper/EMC_00FD: lvm2 label detected /dev/mapper/EMC_0113: lvm2 label detected /dev/mapper/EMC_0111: lvm2 label detected /dev/mapper/EMC_010F: lvm2 label detected /dev/mapper/EMC_010D: lvm2 label detected /dev/mapper/EMC_010B: lvm2 label detected /dev/mapper/EMC_0109: lvm2 label detected /dev/mapper/EMC_0107: lvm2 label detected /dev/mapper/EMC_0105: lvm2 label detected /dev/mapper/EMC_0103: lvm2 label detected /dev/mapper/EMC_0101: lvm2 label detected /dev/mapper/EMC_00FF: lvm2 label detected /dev/mapper/EMC_00FD: lvm2 label detected /dev/mapper/EMC_0113: lvm2 label detected /dev/mapper/EMC_0111: lvm2 label detected /dev/mapper/EMC_010F: lvm2 label detected /dev/mapper/EMC_010D: lvm2 label detected /dev/mapper/EMC_010B: lvm2 label detected /dev/mapper/EMC_0109: lvm2 label detected /dev/mapper/EMC_0107: lvm2 label detected /dev/mapper/EMC_0105: lvm2 label detected /dev/mapper/EMC_0103: lvm2 label detected /dev/mapper/EMC_0101: lvm2 label detected /dev/mapper/EMC_00FF: lvm2 label detected /dev/mapper/EMC_00FD: lvm2 label detected /dev/mapper/EMC_0113: lvm2 label detected /dev/mapper/EMC_0111: lvm2 label detected /dev/mapper/EMC_010F: lvm2 label detected /dev/mapper/EMC_010D: lvm2 label detected /dev/mapper/EMC_010B: lvm2 label detected /dev/mapper/EMC_0109: lvm2 label detected /dev/mapper/EMC_0107: lvm2 label detected /dev/mapper/EMC_0105: lvm2 label detected /dev/mapper/EMC_0103: lvm2 label detected /dev/mapper/EMC_0101: lvm2 label detected /dev/mapper/EMC_00FF: lvm2 label detected /dev/mapper/EMC_00FD: lvm2 label detected /dev/mapper/EMC_0113: lvm2 label detected /dev/mapper/EMC_0111: lvm2 label detected /dev/mapper/EMC_010F: lvm2 label detected /dev/mapper/EMC_010D: lvm2 label detected /dev/mapper/EMC_010B: lvm2 label detected /dev/mapper/EMC_0109: lvm2 label detected /dev/mapper/EMC_0107: lvm2 label detected /dev/mapper/EMC_0105: lvm2 label detected /dev/mapper/EMC_0103: lvm2 label detected /dev/mapper/EMC_0101: lvm2 label detected /dev/mapper/EMC_00FF: lvm2 label detected /dev/mapper/EMC_00FD: lvm2 label detected /dev/cciss/c0d0p4: lvm2 label detected /dev/cciss/c0d0p4: lvm2 label detected PV /dev/mapper/EMC_0113 is in exported VG vg_mds [16.84 GB / 0 free] PV /dev/mapper/EMC_0111 is in exported VG vg_mds [16.84 GB / 0 free] PV /dev/mapper/EMC_010F is in exported VG vg_mds [16.84 GB / 0 free] PV /dev/mapper/EMC_010D is in exported VG vg_mds [16.84 GB / 0 free] PV /dev/mapper/EMC_010B is in exported VG vg_mds [16.84 GB / 0 free] PV /dev/mapper/EMC_0109 is in exported VG vg_mds [16.84 GB / 0 free] PV /dev/mapper/EMC_0107 is in exported VG vg_mds [16.84 GB / 0 free] PV /dev/mapper/EMC_0105 is in exported VG vg_mds [16.84 GB / 0 free] PV /dev/mapper/EMC_0103 is in exported VG vg_mds [16.84 GB / 0 free] PV /dev/mapper/EMC_0101 is in exported VG vg_mds [16.84 GB / 0 free] PV /dev/mapper/EMC_00FF is in exported VG vg_mds [16.84 GB / 0 free] PV /dev/mapper/EMC_00FD is in exported VG vg_mds [16.84 GB / 0 free] PV /dev/cciss/c0d0p4 VG vg00 lvm2 [129.58 GB / 44.00 MB free] Total: 13 [331.71 GB] / in use: 13 [331.71 GB] / in no VG: 0 [0 ]*VGSCAN
*# vgscan -vv
Setting global/locking_type to 1
File-based locking selected.
Setting global/locking_dir to/var/lock/lvm
Wiping cache of LVM-capable devices
Wiping internal VG cache
Reading all physical volumes. This may take a while...
Finding all volume groups
/dev/cciss/c0d0: size is 286677120 sectors/dev/cciss/c0d0p1: size is 208782 sectors/dev/cciss/c0d0p1: size is 208782 sectors/dev/cciss/c0d0p1: No label detected/dev/cciss/c0d0p2: size is 4209030 sectors/dev/cciss/c0d0p2: size is 4209030 sectors/dev/cciss/c0d0p2: No label detected/dev/cciss/c0d0p3: size is 10490445 sectors/dev/cciss/c0d0p3: size is 10490445 sectors/dev/cciss/c0d0p3: No label detected/dev/cciss/c0d0p4: size is 271755540 sectors/dev/cciss/c0d0p4: size is 271755540 sectors/dev/cciss/c0d0p4: lvm2 label detected/dev/mapper/EMC_0113: size is 35358720 sectors/dev/mapper/EMC_0113: size is 35358720 sectors/dev/mapper/EMC_0113: lvm2 label detected/dev/mapper/EMC_0111: size is 35358720 sectors/dev/mapper/EMC_0111: size is 35358720 sectors/dev/mapper/EMC_0111: lvm2 label detected/dev/mapper/EMC_010F: size is 35358720 sectors/dev/mapper/EMC_010F: size is 35358720 sectors/dev/mapper/EMC_010F: lvm2 label detected/dev/mapper/EMC_010D: size is 35358720 sectors/dev/mapper/EMC_010D: size is 35358720 sectors/dev/mapper/EMC_010D: lvm2 label detected/dev/mapper/EMC_010B: size is 35358720 sectors/dev/mapper/EMC_010B: size is 35358720 sectors/dev/mapper/EMC_010B: lvm2 label detected/dev/mapper/EMC_0109: size is 35358720 sectors/dev/mapper/EMC_0109: size is 35358720 sectors/dev/mapper/EMC_0109: lvm2 label detected/dev/mapper/EMC_0107: size is 35358720 sectors/dev/mapper/EMC_0107: size is 35358720 sectors/dev/mapper/EMC_0107: lvm2 label detected/dev/mapper/EMC_0105: size is 35358720 sectors/dev/mapper/EMC_0105: size is 35358720 sectors/dev/mapper/EMC_0105: lvm2 label detected/dev/mapper/EMC_0103: size is 35358720 sectors/dev/mapper/EMC_0103: size is 35358720 sectors/dev/mapper/EMC_0103: lvm2 label detected/dev/mapper/EMC_0101: size is 35358720 sectors/dev/mapper/EMC_0101: size is 35358720 sectors/dev/mapper/EMC_0101: lvm2 label detected/dev/mapper/EMC_00FF: size is 35358720 sectors/dev/mapper/EMC_00FF: size is 35358720 sectors/dev/mapper/EMC_00FF: lvm2 label detected/dev/mapper/EMC_00FD: size is 35358720 sectors/dev/mapper/EMC_00FD: size is 35358720 sectors/dev/mapper/EMC_00FD: lvm2 label detected/dev/mapper/EMC_0012: size is 9600 sectors/dev/mapper/EMC_0012: size is 9600 sectors/dev/mapper/EMC_0012: No label detected
Locking/var/lock/lvm/V_vg_mdsRB
Finding volume group "vg_mds"
/dev/mapper/EMC_0113: lvm2 label detected/dev/mapper/EMC_0111: lvm2 label detected/dev/mapper/EMC_010F: lvm2 label detected/dev/mapper/EMC_010D: lvm2 label detected/dev/mapper/EMC_010B: lvm2 label detected/dev/mapper/EMC_0109: lvm2 label detected/dev/mapper/EMC_0107: lvm2 label detected/dev/mapper/EMC_0105: lvm2 label detected/dev/mapper/EMC_0103: lvm2 label detected/dev/mapper/EMC_0101: lvm2 label detected/dev/mapper/EMC_00FF: lvm2 label detected/dev/mapper/EMC_00FD: lvm2 label detected/dev/mapper/EMC_0113: lvm2 label detected/dev/mapper/EMC_0111: lvm2 label detected/dev/mapper/EMC_010F: lvm2 label detected/dev/mapper/EMC_010D: lvm2 label detected/dev/mapper/EMC_010B: lvm2 label detected/dev/mapper/EMC_0109: lvm2 label detected/dev/mapper/EMC_0107: lvm2 label detected/dev/mapper/EMC_0105: lvm2 label detected/dev/mapper/EMC_0103: lvm2 label detected/dev/mapper/EMC_0101: lvm2 label detected/dev/mapper/EMC_00FF: lvm2 label detected/dev/mapper/EMC_00FD: lvm2 label detected/dev/mapper/EMC_0113: lvm2 label detected/dev/mapper/EMC_0111: lvm2 label detected/dev/mapper/EMC_010F: lvm2 label detected/dev/mapper/EMC_010D: lvm2 label detected/dev/mapper/EMC_010B: lvm2 label detected/dev/mapper/EMC_0109: lvm2 label detected/dev/mapper/EMC_0107: lvm2 label detected/dev/mapper/EMC_0105: lvm2 label detected/dev/mapper/EMC_0103: lvm2 label detected/dev/mapper/EMC_0101: lvm2 label detected/dev/mapper/EMC_00FF: lvm2 label detected/dev/mapper/EMC_00FD: lvm2 label detected/dev/mapper/EMC_0113: lvm2 label detected/dev/mapper/EMC_0111: lvm2 label detected/dev/mapper/EMC_010F: lvm2 label detected/dev/mapper/EMC_010D: lvm2 label detected/dev/mapper/EMC_010B: lvm2 label detected/dev/mapper/EMC_0109: lvm2 label detected/dev/mapper/EMC_0107: lvm2 label detected/dev/mapper/EMC_0105: lvm2 label detected/dev/mapper/EMC_0103: lvm2 label detected/dev/mapper/EMC_0101: lvm2 label detected/dev/mapper/EMC_00FF: lvm2 label detected/dev/mapper/EMC_00FD: lvm2 label detected/dev/mapper/EMC_0113: lvm2 label detected/dev/mapper/EMC_0111: lvm2 label detected/dev/mapper/EMC_010F: lvm2 label detected/dev/mapper/EMC_010D: lvm2 label detected/dev/mapper/EMC_010B: lvm2 label detected/dev/mapper/EMC_0109: lvm2 label detected/dev/mapper/EMC_0107: lvm2 label detected/dev/mapper/EMC_0105: lvm2 label detected/dev/mapper/EMC_0103: lvm2 label detected/dev/mapper/EMC_0101: lvm2 label detected/dev/mapper/EMC_00FF: lvm2 label detected/dev/mapper/EMC_00FD: lvm2 label detected/dev/mapper/EMC_0113: lvm2 label detected/dev/mapper/EMC_0111: lvm2 label detected/dev/mapper/EMC_010F: lvm2 label detected/dev/mapper/EMC_010D: lvm2 label detected/dev/mapper/EMC_010B: lvm2 label detected/dev/mapper/EMC_0109: lvm2 label detected/dev/mapper/EMC_0107: lvm2 label detected/dev/mapper/EMC_0105: lvm2 label detected/dev/mapper/EMC_0103: lvm2 label detected/dev/mapper/EMC_0101: lvm2 label detected/dev/mapper/EMC_00FF: lvm2 label detected/dev/mapper/EMC_00FD: lvm2 label detected/dev/mapper/EMC_0113: lvm2 label detected/dev/mapper/EMC_0111: lvm2 label detected/dev/mapper/EMC_010F: lvm2 label detected/dev/mapper/EMC_010D: lvm2 label detected/dev/mapper/EMC_010B: lvm2 label detected/dev/mapper/EMC_0109: lvm2 label detected/dev/mapper/EMC_0107: lvm2 label detected/dev/mapper/EMC_0105: lvm2 label detected/dev/mapper/EMC_0103: lvm2 label detected/dev/mapper/EMC_0101: lvm2 label detected/dev/mapper/EMC_00FF: lvm2 label detected/dev/mapper/EMC_00FD: lvm2 label detected/dev/mapper/EMC_0113: lvm2 label detected/dev/mapper/EMC_0111: lvm2 label detected/dev/mapper/EMC_010F: lvm2 label detected/dev/mapper/EMC_010D: lvm2 label detected/dev/mapper/EMC_010B: lvm2 label detected/dev/mapper/EMC_0109: lvm2 label detected/dev/mapper/EMC_0107: lvm2 label detected/dev/mapper/EMC_0105: lvm2 label detected/dev/mapper/EMC_0103: lvm2 label detected/dev/mapper/EMC_0101: lvm2 label detected/dev/mapper/EMC_00FF: lvm2 label detected/dev/mapper/EMC_00FD: lvm2 label detected/dev/mapper/EMC_0113: lvm2 label detected/dev/mapper/EMC_0111: lvm2 label detected/dev/mapper/EMC_010F: lvm2 label detected/dev/mapper/EMC_010D: lvm2 label detected/dev/mapper/EMC_010B: lvm2 label detected/dev/mapper/EMC_0109: lvm2 label detected/dev/mapper/EMC_0107: lvm2 label detected/dev/mapper/EMC_0105: lvm2 label detected/dev/mapper/EMC_0103: lvm2 label detected/dev/mapper/EMC_0101: lvm2 label detected/dev/mapper/EMC_00FF: lvm2 label detected/dev/mapper/EMC_00FD: lvm2 label detected/dev/mapper/EMC_0113: lvm2 label detected/dev/mapper/EMC_0111: lvm2 label detected/dev/mapper/EMC_010F: lvm2 label detected/dev/mapper/EMC_010D: lvm2 label detected/dev/mapper/EMC_010B: lvm2 label detected/dev/mapper/EMC_0109: lvm2 label detected/dev/mapper/EMC_0107: lvm2 label detected/dev/mapper/EMC_0105: lvm2 label detected/dev/mapper/EMC_0103: lvm2 label detected/dev/mapper/EMC_0101: lvm2 label detected/dev/mapper/EMC_00FF: lvm2 label detected/dev/mapper/EMC_00FD: lvm2 label detected/dev/mapper/EMC_0113: lvm2 label detected/dev/mapper/EMC_0111: lvm2 label detected/dev/mapper/EMC_010F: lvm2 label detected/dev/mapper/EMC_010D: lvm2 label detected/dev/mapper/EMC_010B: lvm2 label detected/dev/mapper/EMC_0109: lvm2 label detected/dev/mapper/EMC_0107: lvm2 label detected/dev/mapper/EMC_0105: lvm2 label detected/dev/mapper/EMC_0103: lvm2 label detected/dev/mapper/EMC_0101: lvm2 label detected/dev/mapper/EMC_00FF: lvm2 label detected/dev/mapper/EMC_00FD: lvm2 label detected/dev/mapper/EMC_0113: lvm2 label detected/dev/mapper/EMC_0111: lvm2 label detected/dev/mapper/EMC_010F: lvm2 label detected/dev/mapper/EMC_010D: lvm2 label detected/dev/mapper/EMC_010B: lvm2 label detected/dev/mapper/EMC_0109: lvm2 label detected/dev/mapper/EMC_0107: lvm2 label detected/dev/mapper/EMC_0105: lvm2 label detected/dev/mapper/EMC_0103: lvm2 label detected/dev/mapper/EMC_0101: lvm2 label detected/dev/mapper/EMC_00FF: lvm2 label detected/dev/mapper/EMC_00FD: lvm2 label detected/dev/mapper/EMC_0113: lvm2 label detected/dev/mapper/EMC_0111: lvm2 label detected/dev/mapper/EMC_010F: lvm2 label detected/dev/mapper/EMC_010D: lvm2 label detected/dev/mapper/EMC_010B: lvm2 label detected/dev/mapper/EMC_0109: lvm2 label detected/dev/mapper/EMC_0107: lvm2 label detected/dev/mapper/EMC_0105: lvm2 label detected/dev/mapper/EMC_0103: lvm2 label detected/dev/mapper/EMC_0101: lvm2 label detected/dev/mapper/EMC_00FF: lvm2 label detected/dev/mapper/EMC_00FD: lvm2 label detected
Found exported volume group "vg_mds" using metadata type lvm2
Unlocking/var/lock/lvm/V_vg_mds
Locking/var/lock/lvm/V_vg00RB
Finding volume group "vg00"
/dev/cciss/c0d0p4: lvm2 label detected/dev/cciss/c0d0p4: lvm2 label detected
Found volume group "vg00" using metadata type lvm2
Unlocking/var/lock/lvm/V_vg00Quoted 66 lines · brem belguebli
Hi,
Never had no problem with it.
The only problem I've hit was due to the binding file being, by default, located in
/var/lib/multipath, which is in my setup on a separate LV than /, during boot time the devices were not correctly created.Just had to switch the binding file to /etc and now no more problem.
extract of my
/etc/multipath.conf:defaults {
...
flush_on_last_delyes
user_friendly_namesyes
bindings_file"/etc/multipath_bindings"
}2010/1/4 Bryn M. Reeves <[email protected]>:
Quoted 24 lines · brem belguebli
Quoted 5 lines
Hi,
Quoted 11 lines
see man 5 lvm.conf there is an option called
preferred_nameswhich is well explainedIt'll instruct lvm to use the
preferred_namesyou configured in the lvm.conf file if they existie :
preferred_names= "/dev/mpath/" will use/dev/mpath/XXXinstead of/dev/mapper/XXXIt's best not to use the symlinks in
/dev/mpath- they are not always reliable. Use the device nodes created in/dev/mapperinstead.Regards,
Bryn.Quoted 9 lines
_______________________________________________
linux-lvm mailing list
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https://www.redhat.com/mailman/listinfo/linux-lvm
read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/_______________________________________________
linux-lvm mailing list
[email protected]
https://www.redhat.com/mailman/listinfo/linux-lvm
read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
Signature · 8 lines
Simon Loewenthal/Tele2 GSM: +31 6 2000 5427 ******** IMPORTANT NOTICE ******** Please repect the X-Reply to klunky.co.uk. PGP available 0xD86A5A17. S/MIME PKCS12 key available for Lotus Notes: Please ask me for it. This e-mail (including any attachments) may contain information that is confidential or otherwise protected from disclosure and it is intended only for the addressees. If you are not the intended recipient, please note that any copying, distribution or other use of information contained in this e-mail (and its attachments) is not allowed. If you have received this e-mail in error, kindly notify us immediately by telephone or e-mail and delete the message (including any attachments) from your system. Please note that e-mail messages may contain computer viruses or other defects, may not be accurately replicated on other systems, or may be subject of unauthorized interception or other interference without the knowledge of sender or recipient. Tele2 only send and receive e-mails on the basis that Tele2 is not responsible for any such computer viruses, corruption or other interference or any consequences thereof. It ought to be obvious that my views do not represent my employer's views.
Hi,
Did anyone ever know why this happens?
With write_cache_state = 0 the PV Name displays the multipathed discs but with write_cache_state = 1 then the PV Name displays the dm disc name eg.
This:
PV Name /dev/mapper/EMC_00FD
verses:
PV Name /dev/dm-16
How do I really know LVM is really using the mutlipath other than disabling one of the ports on the switch, which I don't wish to do on a production box.
Regards, S.
Quoted 640 lines · Simon Loewenthal/NL/Tele2 wrote:
More info:
I thought for a moment that LVM might cache the devices somewhere other than in the cache but am unsure as per output from strace :-
# grep -i cach typescript.* typescript.pvscan:open("/etc/ld.so.cache", O_RDONLY) = 3 typescript.pvscan:open("/usr/lib64/gconv/gconv-modules.cache", O_RDONLY) = 3 typescript.pvscan:stat("/etc/lvm/.cache", 0x7fff2193b6d0) = -1 ENOENT (No such file or directory) typescript.vgscan:open("/etc/ld.so.cache", O_RDONLY) = 3 typescript.vgscan:open("/usr/lib64/gconv/gconv-modules.cache", O_RDONLY) = 3 typescript.vgscan:stat("/etc/lvm/.cache", 0x7fff8d6ad440) = -1 ENOENT (No such file or directory)Quoted 619 lines · Simon Loewenthal/NL/Tele2 wrote:
Update:
I modified the filter to read:
filter = [ "r|/dev/.*/by-path/.*|", "r|/dev/.*/by-id/.*|", "r|/dev/dm-*|" , "a|/dev/mapper/EMC*|", "a|/dev/cciss/*|" , "r/.*/" ]and this made no difference.
What did work was to turn off the cache and delete the .cache file:
write_cache_state= 0Then the discs were brought in as so:
PV Name/dev/mapper/EMC_00FDPV UUID ctz8rd-ew58-0pU8-FssR-x9pR-KSA9-mI4flw PV Status allocatable Total PE / Free PE 539 / 0Howevr, as soon as I activated the cache:
write_cache_state= 1
then the discs in the volume group magically reverted toPV Name
/dev/dm-16PV UUID ctz8rd-ew58-0pU8-FssR-x9pR-KSA9-mI4flw PV Status allocatable Total PE / Free PE 539 / 0Any clues?
Quoted 584 lines · Simon Loewenthal/NL/Tele2 wrote:
I just this on a system with these in the lvm.conf:
preferred_names = [ "^/dev/mapper/EMC_", "^/dev/[hs]d", "^/dev/cciss" ] filter = [ "r|/dev/.*/by-path/.*|", "r|/dev/.*/by-id/.*|","a|/dev/mapper/EMC_*|", "a|/dev/cciss/*|" , "r/.*/" ]
After a pvscan and vgscan I did a vgimport. Guess what: A vgimport of the volume group ignored the filters and preferred devices and imported the vg with these PVs (only one PV shown for brevity, but the rest are similar ):
PV Name
/dev/dm-16PV UUID ctz8rd-ew58-0pU8-FssR-x9pR-KSA9-mI4flw PV Status allocatable Total PE / Free PE 539 / 0Unless,
/dev/dm-16is really some abstracted link back to a multipathed device but I cannot work out this bit:# ls -l /dev/mapper/ total 0 brw------- 1 root root 253, 17 Dec 30 15:11 EMC_0012 [SNIP]# dmsetup ls EMC_0103 (253, 13) EMC_00FF (253, 15) EMC_0101 (253, 14) EMC_00FD (253, 16) vg00-app052 (253, 3) vg00-xen (253, 2) vg00-usr (253, 0) EMC_0113 (253, 4) vg00-var (253, 1) EMC_0012 (253, 17) EMC_010F (253, 6) EMC_0109 (253, 10) EMC_0111 (253, 5) EMC_010D (253, 8) EMC_0107 (253, 11) EMC_010B (253, 9) EMC_0105 (253, 12)The output of pvscan and vgscan follow:
*PVSCAN*
# pvscan -vv Setting global/locking_type to 1 File-based locking selected. Setting global/locking_dir to /var/lock/lvm Wiping cache of LVM-capable devices Wiping internal VG cache Walking through all physical volumes /dev/cciss/c0d0: size is 286677120 sectors /dev/cciss/c0d0p1: size is 208782 sectors /dev/cciss/c0d0p1: size is 208782 sectors /dev/cciss/c0d0p1: No label detected /dev/cciss/c0d0p2: size is 4209030 sectors /dev/cciss/c0d0p2: size is 4209030 sectors /dev/cciss/c0d0p2: No label detected /dev/cciss/c0d0p3: size is 10490445 sectors /dev/cciss/c0d0p3: size is 10490445 sectors /dev/cciss/c0d0p3: No label detected /dev/cciss/c0d0p4: size is 271755540 sectors /dev/cciss/c0d0p4: size is 271755540 sectors /dev/cciss/c0d0p4: lvm2 label detected /dev/mapper/EMC_0113: size is 35358720 sectors /dev/mapper/EMC_0113: size is 35358720 sectors /dev/mapper/EMC_0113: lvm2 label detected /dev/mapper/EMC_0111: size is 35358720 sectors /dev/mapper/EMC_0111: size is 35358720 sectors /dev/mapper/EMC_0111: lvm2 label detected /dev/mapper/EMC_010F: size is 35358720 sectors /dev/mapper/EMC_010F: size is 35358720 sectors /dev/mapper/EMC_010F: lvm2 label detected /dev/mapper/EMC_010D: size is 35358720 sectors /dev/mapper/EMC_010D: size is 35358720 sectors /dev/mapper/EMC_010D: lvm2 label detected /dev/mapper/EMC_010B: size is 35358720 sectors /dev/mapper/EMC_010B: size is 35358720 sectors /dev/mapper/EMC_010B: lvm2 label detected /dev/mapper/EMC_0109: size is 35358720 sectors /dev/mapper/EMC_0109: size is 35358720 sectors /dev/mapper/EMC_0109: lvm2 label detected /dev/mapper/EMC_0107: size is 35358720 sectors /dev/mapper/EMC_0107: size is 35358720 sectors /dev/mapper/EMC_0107: lvm2 label detected /dev/mapper/EMC_0105: size is 35358720 sectors /dev/mapper/EMC_0105: size is 35358720 sectors /dev/mapper/EMC_0105: lvm2 label detected /dev/mapper/EMC_0103: size is 35358720 sectors /dev/mapper/EMC_0103: size is 35358720 sectors /dev/mapper/EMC_0103: lvm2 label detected /dev/mapper/EMC_0101: size is 35358720 sectors /dev/mapper/EMC_0101: size is 35358720 sectors /dev/mapper/EMC_0101: lvm2 label detected /dev/mapper/EMC_00FF: size is 35358720 sectors /dev/mapper/EMC_00FF: size is 35358720 sectors /dev/mapper/EMC_00FF: lvm2 label detected /dev/mapper/EMC_00FD: size is 35358720 sectors /dev/mapper/EMC_00FD: size is 35358720 sectors /dev/mapper/EMC_00FD: lvm2 label detected /dev/mapper/EMC_0012: size is 9600 sectors /dev/mapper/EMC_0012: size is 9600 sectors /dev/mapper/EMC_0012: No label detected /dev/mapper/EMC_0113: lvm2 label detected /dev/mapper/EMC_0111: lvm2 label detected /dev/mapper/EMC_010F: lvm2 label detected /dev/mapper/EMC_010D: lvm2 label detected /dev/mapper/EMC_010B: lvm2 label detected /dev/mapper/EMC_0109: lvm2 label detected /dev/mapper/EMC_0107: lvm2 label detected /dev/mapper/EMC_0105: lvm2 label detected /dev/mapper/EMC_0103: lvm2 label detected /dev/mapper/EMC_0101: lvm2 label detected /dev/mapper/EMC_00FF: lvm2 label detected /dev/mapper/EMC_00FD: lvm2 label detected /dev/mapper/EMC_0113: lvm2 label detected /dev/mapper/EMC_0111: lvm2 label detected /dev/mapper/EMC_010F: lvm2 label detected /dev/mapper/EMC_010D: lvm2 label detected /dev/mapper/EMC_010B: lvm2 label detected /dev/mapper/EMC_0109: lvm2 label detected /dev/mapper/EMC_0107: lvm2 label detected /dev/mapper/EMC_0105: lvm2 label detected /dev/mapper/EMC_0103: lvm2 label detected /dev/mapper/EMC_0101: lvm2 label detected /dev/mapper/EMC_00FF: lvm2 label detected /dev/mapper/EMC_00FD: lvm2 label detected /dev/mapper/EMC_0113: lvm2 label detected /dev/mapper/EMC_0111: lvm2 label detected /dev/mapper/EMC_010F: lvm2 label detected /dev/mapper/EMC_010D: lvm2 label detected /dev/mapper/EMC_010B: lvm2 label detected /dev/mapper/EMC_0109: lvm2 label detected /dev/mapper/EMC_0107: lvm2 label detected /dev/mapper/EMC_0105: lvm2 label detected /dev/mapper/EMC_0103: lvm2 label detected /dev/mapper/EMC_0101: lvm2 label detected /dev/mapper/EMC_00FF: lvm2 label detected /dev/mapper/EMC_00FD: lvm2 label detected /dev/mapper/EMC_0113: lvm2 label detected /dev/mapper/EMC_0111: lvm2 label detected /dev/mapper/EMC_010F: lvm2 label detected /dev/mapper/EMC_010D: lvm2 label detected /dev/mapper/EMC_010B: lvm2 label detected /dev/mapper/EMC_0109: lvm2 label detected /dev/mapper/EMC_0107: lvm2 label detected /dev/mapper/EMC_0105: lvm2 label detected /dev/mapper/EMC_0103: lvm2 label detected /dev/mapper/EMC_0101: lvm2 label detected /dev/mapper/EMC_00FF: lvm2 label detected /dev/mapper/EMC_00FD: lvm2 label detected /dev/mapper/EMC_0113: lvm2 label detected /dev/mapper/EMC_0111: lvm2 label detected /dev/mapper/EMC_010F: lvm2 label detected /dev/mapper/EMC_010D: lvm2 label detected /dev/mapper/EMC_010B: lvm2 label detected /dev/mapper/EMC_0109: lvm2 label detected /dev/mapper/EMC_0107: lvm2 label detected /dev/mapper/EMC_0105: lvm2 label detected /dev/mapper/EMC_0103: lvm2 label detected /dev/mapper/EMC_0101: lvm2 label detected /dev/mapper/EMC_00FF: lvm2 label detected /dev/mapper/EMC_00FD: lvm2 label detected /dev/mapper/EMC_0113: lvm2 label detected /dev/mapper/EMC_0111: lvm2 label detected /dev/mapper/EMC_010F: lvm2 label detected /dev/mapper/EMC_010D: lvm2 label detected /dev/mapper/EMC_010B: lvm2 label detected /dev/mapper/EMC_0109: lvm2 label detected /dev/mapper/EMC_0107: lvm2 label detected /dev/mapper/EMC_0105: lvm2 label detected /dev/mapper/EMC_0103: lvm2 label detected /dev/mapper/EMC_0101: lvm2 label detected /dev/mapper/EMC_00FF: lvm2 label detected /dev/mapper/EMC_00FD: lvm2 label detected /dev/mapper/EMC_0113: lvm2 label detected /dev/mapper/EMC_0111: lvm2 label detected /dev/mapper/EMC_010F: lvm2 label detected /dev/mapper/EMC_010D: lvm2 label detected /dev/mapper/EMC_010B: lvm2 label detected /dev/mapper/EMC_0109: lvm2 label detected /dev/mapper/EMC_0107: lvm2 label detected /dev/mapper/EMC_0105: lvm2 label detected /dev/mapper/EMC_0103: lvm2 label detected /dev/mapper/EMC_0101: lvm2 label detected /dev/mapper/EMC_00FF: lvm2 label detected /dev/mapper/EMC_00FD: lvm2 label detected /dev/mapper/EMC_0113: lvm2 label detected /dev/mapper/EMC_0111: lvm2 label detected /dev/mapper/EMC_010F: lvm2 label detected /dev/mapper/EMC_010D: lvm2 label detected /dev/mapper/EMC_010B: lvm2 label detected /dev/mapper/EMC_0109: lvm2 label detected /dev/mapper/EMC_0107: lvm2 label detected /dev/mapper/EMC_0105: lvm2 label detected /dev/mapper/EMC_0103: lvm2 label detected /dev/mapper/EMC_0101: lvm2 label detected /dev/mapper/EMC_00FF: lvm2 label detected /dev/mapper/EMC_00FD: lvm2 label detected /dev/mapper/EMC_0113: lvm2 label detected /dev/mapper/EMC_0111: lvm2 label detected /dev/mapper/EMC_010F: lvm2 label detected /dev/mapper/EMC_010D: lvm2 label detected /dev/mapper/EMC_010B: lvm2 label detected /dev/mapper/EMC_0109: lvm2 label detected /dev/mapper/EMC_0107: lvm2 label detected /dev/mapper/EMC_0105: lvm2 label detected /dev/mapper/EMC_0103: lvm2 label detected /dev/mapper/EMC_0101: lvm2 label detected /dev/mapper/EMC_00FF: lvm2 label detected /dev/mapper/EMC_00FD: lvm2 label detected /dev/mapper/EMC_0113: lvm2 label detected /dev/mapper/EMC_0111: lvm2 label detected /dev/mapper/EMC_010F: lvm2 label detected /dev/mapper/EMC_010D: lvm2 label detected /dev/mapper/EMC_010B: lvm2 label detected /dev/mapper/EMC_0109: lvm2 label detected /dev/mapper/EMC_0107: lvm2 label detected /dev/mapper/EMC_0105: lvm2 label detected /dev/mapper/EMC_0103: lvm2 label detected /dev/mapper/EMC_0101: lvm2 label detected /dev/mapper/EMC_00FF: lvm2 label detected /dev/mapper/EMC_00FD: lvm2 label detected /dev/mapper/EMC_0113: lvm2 label detected /dev/mapper/EMC_0111: lvm2 label detected /dev/mapper/EMC_010F: lvm2 label detected /dev/mapper/EMC_010D: lvm2 label detected /dev/mapper/EMC_010B: lvm2 label detected /dev/mapper/EMC_0109: lvm2 label detected /dev/mapper/EMC_0107: lvm2 label detected /dev/mapper/EMC_0105: lvm2 label detected /dev/mapper/EMC_0103: lvm2 label detected /dev/mapper/EMC_0101: lvm2 label detected /dev/mapper/EMC_00FF: lvm2 label detected /dev/mapper/EMC_00FD: lvm2 label detected /dev/mapper/EMC_0113: lvm2 label detected /dev/mapper/EMC_0111: lvm2 label detected /dev/mapper/EMC_010F: lvm2 label detected /dev/mapper/EMC_010D: lvm2 label detected /dev/mapper/EMC_010B: lvm2 label detected /dev/mapper/EMC_0109: lvm2 label detected /dev/mapper/EMC_0107: lvm2 label detected /dev/mapper/EMC_0105: lvm2 label detected /dev/mapper/EMC_0103: lvm2 label detected /dev/mapper/EMC_0101: lvm2 label detected /dev/mapper/EMC_00FF: lvm2 label detected /dev/mapper/EMC_00FD: lvm2 label detected /dev/mapper/EMC_0113: lvm2 label detected /dev/mapper/EMC_0111: lvm2 label detected /dev/mapper/EMC_010F: lvm2 label detected /dev/mapper/EMC_010D: lvm2 label detected /dev/mapper/EMC_010B: lvm2 label detected /dev/mapper/EMC_0109: lvm2 label detected /dev/mapper/EMC_0107: lvm2 label detected /dev/mapper/EMC_0105: lvm2 label detected /dev/mapper/EMC_0103: lvm2 label detected /dev/mapper/EMC_0101: lvm2 label detected /dev/mapper/EMC_00FF: lvm2 label detected /dev/mapper/EMC_00FD: lvm2 label detected /dev/cciss/c0d0p4: lvm2 label detected /dev/cciss/c0d0p4: lvm2 label detected PV /dev/mapper/EMC_0113 is in exported VG vg_mds [16.84 GB / 0 free] PV /dev/mapper/EMC_0111 is in exported VG vg_mds [16.84 GB / 0 free] PV /dev/mapper/EMC_010F is in exported VG vg_mds [16.84 GB / 0 free] PV /dev/mapper/EMC_010D is in exported VG vg_mds [16.84 GB / 0 free] PV /dev/mapper/EMC_010B is in exported VG vg_mds [16.84 GB / 0 free] PV /dev/mapper/EMC_0109 is in exported VG vg_mds [16.84 GB / 0 free] PV /dev/mapper/EMC_0107 is in exported VG vg_mds [16.84 GB / 0 free] PV /dev/mapper/EMC_0105 is in exported VG vg_mds [16.84 GB / 0 free] PV /dev/mapper/EMC_0103 is in exported VG vg_mds [16.84 GB / 0 free] PV /dev/mapper/EMC_0101 is in exported VG vg_mds [16.84 GB / 0 free] PV /dev/mapper/EMC_00FF is in exported VG vg_mds [16.84 GB / 0 free] PV /dev/mapper/EMC_00FD is in exported VG vg_mds [16.84 GB / 0 free] PV /dev/cciss/c0d0p4 VG vg00 lvm2 [129.58 GB / 44.00 MB free] Total: 13 [331.71 GB] / in use: 13 [331.71 GB] / in no VG: 0 [0 ]*VGSCAN
*# vgscan -vv
Setting global/locking_type to 1
File-based locking selected.
Setting global/locking_dir to/var/lock/lvm
Wiping cache of LVM-capable devices
Wiping internal VG cache
Reading all physical volumes. This may take a while...
Finding all volume groups
/dev/cciss/c0d0: size is 286677120 sectors/dev/cciss/c0d0p1: size is 208782 sectors/dev/cciss/c0d0p1: size is 208782 sectors/dev/cciss/c0d0p1: No label detected/dev/cciss/c0d0p2: size is 4209030 sectors/dev/cciss/c0d0p2: size is 4209030 sectors/dev/cciss/c0d0p2: No label detected/dev/cciss/c0d0p3: size is 10490445 sectors/dev/cciss/c0d0p3: size is 10490445 sectors/dev/cciss/c0d0p3: No label detected/dev/cciss/c0d0p4: size is 271755540 sectors/dev/cciss/c0d0p4: size is 271755540 sectors/dev/cciss/c0d0p4: lvm2 label detected/dev/mapper/EMC_0113: size is 35358720 sectors/dev/mapper/EMC_0113: size is 35358720 sectors/dev/mapper/EMC_0113: lvm2 label detected/dev/mapper/EMC_0111: size is 35358720 sectors/dev/mapper/EMC_0111: size is 35358720 sectors/dev/mapper/EMC_0111: lvm2 label detected/dev/mapper/EMC_010F: size is 35358720 sectors/dev/mapper/EMC_010F: size is 35358720 sectors/dev/mapper/EMC_010F: lvm2 label detected/dev/mapper/EMC_010D: size is 35358720 sectors/dev/mapper/EMC_010D: size is 35358720 sectors/dev/mapper/EMC_010D: lvm2 label detected/dev/mapper/EMC_010B: size is 35358720 sectors/dev/mapper/EMC_010B: size is 35358720 sectors/dev/mapper/EMC_010B: lvm2 label detected/dev/mapper/EMC_0109: size is 35358720 sectors/dev/mapper/EMC_0109: size is 35358720 sectors/dev/mapper/EMC_0109: lvm2 label detected/dev/mapper/EMC_0107: size is 35358720 sectors/dev/mapper/EMC_0107: size is 35358720 sectors/dev/mapper/EMC_0107: lvm2 label detected/dev/mapper/EMC_0105: size is 35358720 sectors/dev/mapper/EMC_0105: size is 35358720 sectors/dev/mapper/EMC_0105: lvm2 label detected/dev/mapper/EMC_0103: size is 35358720 sectors/dev/mapper/EMC_0103: size is 35358720 sectors/dev/mapper/EMC_0103: lvm2 label detected/dev/mapper/EMC_0101: size is 35358720 sectors/dev/mapper/EMC_0101: size is 35358720 sectors/dev/mapper/EMC_0101: lvm2 label detected/dev/mapper/EMC_00FF: size is 35358720 sectors/dev/mapper/EMC_00FF: size is 35358720 sectors/dev/mapper/EMC_00FF: lvm2 label detected/dev/mapper/EMC_00FD: size is 35358720 sectors/dev/mapper/EMC_00FD: size is 35358720 sectors/dev/mapper/EMC_00FD: lvm2 label detected/dev/mapper/EMC_0012: size is 9600 sectors/dev/mapper/EMC_0012: size is 9600 sectors/dev/mapper/EMC_0012: No label detected
Locking/var/lock/lvm/V_vg_mdsRB
Finding volume group "vg_mds"
/dev/mapper/EMC_0113: lvm2 label detected/dev/mapper/EMC_0111: lvm2 label detected/dev/mapper/EMC_010F: lvm2 label detected/dev/mapper/EMC_010D: lvm2 label detected/dev/mapper/EMC_010B: lvm2 label detected/dev/mapper/EMC_0109: lvm2 label detected/dev/mapper/EMC_0107: lvm2 label detected/dev/mapper/EMC_0105: lvm2 label detected/dev/mapper/EMC_0103: lvm2 label detected/dev/mapper/EMC_0101: lvm2 label detected/dev/mapper/EMC_00FF: lvm2 label detected/dev/mapper/EMC_00FD: lvm2 label detected/dev/mapper/EMC_0113: lvm2 label detected/dev/mapper/EMC_0111: lvm2 label detected/dev/mapper/EMC_010F: lvm2 label detected/dev/mapper/EMC_010D: lvm2 label detected/dev/mapper/EMC_010B: lvm2 label detected/dev/mapper/EMC_0109: lvm2 label detected/dev/mapper/EMC_0107: lvm2 label detected/dev/mapper/EMC_0105: lvm2 label detected/dev/mapper/EMC_0103: lvm2 label detected/dev/mapper/EMC_0101: lvm2 label detected/dev/mapper/EMC_00FF: lvm2 label detected/dev/mapper/EMC_00FD: lvm2 label detected/dev/mapper/EMC_0113: lvm2 label detected/dev/mapper/EMC_0111: lvm2 label detected/dev/mapper/EMC_010F: lvm2 label detected/dev/mapper/EMC_010D: lvm2 label detected/dev/mapper/EMC_010B: lvm2 label detected/dev/mapper/EMC_0109: lvm2 label detected/dev/mapper/EMC_0107: lvm2 label detected/dev/mapper/EMC_0105: lvm2 label detected/dev/mapper/EMC_0103: lvm2 label detected/dev/mapper/EMC_0101: lvm2 label detected/dev/mapper/EMC_00FF: lvm2 label detected/dev/mapper/EMC_00FD: lvm2 label detected/dev/mapper/EMC_0113: lvm2 label detected/dev/mapper/EMC_0111: lvm2 label detected/dev/mapper/EMC_010F: lvm2 label detected/dev/mapper/EMC_010D: lvm2 label detected/dev/mapper/EMC_010B: lvm2 label detected/dev/mapper/EMC_0109: lvm2 label detected/dev/mapper/EMC_0107: lvm2 label detected/dev/mapper/EMC_0105: lvm2 label detected/dev/mapper/EMC_0103: lvm2 label detected/dev/mapper/EMC_0101: lvm2 label detected/dev/mapper/EMC_00FF: lvm2 label detected/dev/mapper/EMC_00FD: lvm2 label detected/dev/mapper/EMC_0113: lvm2 label detected/dev/mapper/EMC_0111: lvm2 label detected/dev/mapper/EMC_010F: lvm2 label detected/dev/mapper/EMC_010D: lvm2 label detected/dev/mapper/EMC_010B: lvm2 label detected/dev/mapper/EMC_0109: lvm2 label detected/dev/mapper/EMC_0107: lvm2 label detected/dev/mapper/EMC_0105: lvm2 label detected/dev/mapper/EMC_0103: lvm2 label detected/dev/mapper/EMC_0101: lvm2 label detected/dev/mapper/EMC_00FF: lvm2 label detected/dev/mapper/EMC_00FD: lvm2 label detected/dev/mapper/EMC_0113: lvm2 label detected/dev/mapper/EMC_0111: lvm2 label detected/dev/mapper/EMC_010F: lvm2 label detected/dev/mapper/EMC_010D: lvm2 label detected/dev/mapper/EMC_010B: lvm2 label detected/dev/mapper/EMC_0109: lvm2 label detected/dev/mapper/EMC_0107: lvm2 label detected/dev/mapper/EMC_0105: lvm2 label detected/dev/mapper/EMC_0103: lvm2 label detected/dev/mapper/EMC_0101: lvm2 label detected/dev/mapper/EMC_00FF: lvm2 label detected/dev/mapper/EMC_00FD: lvm2 label detected/dev/mapper/EMC_0113: lvm2 label detected/dev/mapper/EMC_0111: lvm2 label detected/dev/mapper/EMC_010F: lvm2 label detected/dev/mapper/EMC_010D: lvm2 label detected/dev/mapper/EMC_010B: lvm2 label detected/dev/mapper/EMC_0109: lvm2 label detected/dev/mapper/EMC_0107: lvm2 label detected/dev/mapper/EMC_0105: lvm2 label detected/dev/mapper/EMC_0103: lvm2 label detected/dev/mapper/EMC_0101: lvm2 label detected/dev/mapper/EMC_00FF: lvm2 label detected/dev/mapper/EMC_00FD: lvm2 label detected/dev/mapper/EMC_0113: lvm2 label detected/dev/mapper/EMC_0111: lvm2 label detected/dev/mapper/EMC_010F: lvm2 label detected/dev/mapper/EMC_010D: lvm2 label detected/dev/mapper/EMC_010B: lvm2 label detected/dev/mapper/EMC_0109: lvm2 label detected/dev/mapper/EMC_0107: lvm2 label detected/dev/mapper/EMC_0105: lvm2 label detected/dev/mapper/EMC_0103: lvm2 label detected/dev/mapper/EMC_0101: lvm2 label detected/dev/mapper/EMC_00FF: lvm2 label detected/dev/mapper/EMC_00FD: lvm2 label detected/dev/mapper/EMC_0113: lvm2 label detected/dev/mapper/EMC_0111: lvm2 label detected/dev/mapper/EMC_010F: lvm2 label detected/dev/mapper/EMC_010D: lvm2 label detected/dev/mapper/EMC_010B: lvm2 label detected/dev/mapper/EMC_0109: lvm2 label detected/dev/mapper/EMC_0107: lvm2 label detected/dev/mapper/EMC_0105: lvm2 label detected/dev/mapper/EMC_0103: lvm2 label detected/dev/mapper/EMC_0101: lvm2 label detected/dev/mapper/EMC_00FF: lvm2 label detected/dev/mapper/EMC_00FD: lvm2 label detected/dev/mapper/EMC_0113: lvm2 label detected/dev/mapper/EMC_0111: lvm2 label detected/dev/mapper/EMC_010F: lvm2 label detected/dev/mapper/EMC_010D: lvm2 label detected/dev/mapper/EMC_010B: lvm2 label detected/dev/mapper/EMC_0109: lvm2 label detected/dev/mapper/EMC_0107: lvm2 label detected/dev/mapper/EMC_0105: lvm2 label detected/dev/mapper/EMC_0103: lvm2 label detected/dev/mapper/EMC_0101: lvm2 label detected/dev/mapper/EMC_00FF: lvm2 label detected/dev/mapper/EMC_00FD: lvm2 label detected/dev/mapper/EMC_0113: lvm2 label detected/dev/mapper/EMC_0111: lvm2 label detected/dev/mapper/EMC_010F: lvm2 label detected/dev/mapper/EMC_010D: lvm2 label detected/dev/mapper/EMC_010B: lvm2 label detected/dev/mapper/EMC_0109: lvm2 label detected/dev/mapper/EMC_0107: lvm2 label detected/dev/mapper/EMC_0105: lvm2 label detected/dev/mapper/EMC_0103: lvm2 label detected/dev/mapper/EMC_0101: lvm2 label detected/dev/mapper/EMC_00FF: lvm2 label detected/dev/mapper/EMC_00FD: lvm2 label detected/dev/mapper/EMC_0113: lvm2 label detected/dev/mapper/EMC_0111: lvm2 label detected/dev/mapper/EMC_010F: lvm2 label detected/dev/mapper/EMC_010D: lvm2 label detected/dev/mapper/EMC_010B: lvm2 label detected/dev/mapper/EMC_0109: lvm2 label detected/dev/mapper/EMC_0107: lvm2 label detected/dev/mapper/EMC_0105: lvm2 label detected/dev/mapper/EMC_0103: lvm2 label detected/dev/mapper/EMC_0101: lvm2 label detected/dev/mapper/EMC_00FF: lvm2 label detected/dev/mapper/EMC_00FD: lvm2 label detected/dev/mapper/EMC_0113: lvm2 label detected/dev/mapper/EMC_0111: lvm2 label detected/dev/mapper/EMC_010F: lvm2 label detected/dev/mapper/EMC_010D: lvm2 label detected/dev/mapper/EMC_010B: lvm2 label detected/dev/mapper/EMC_0109: lvm2 label detected/dev/mapper/EMC_0107: lvm2 label detected/dev/mapper/EMC_0105: lvm2 label detected/dev/mapper/EMC_0103: lvm2 label detected/dev/mapper/EMC_0101: lvm2 label detected/dev/mapper/EMC_00FF: lvm2 label detected/dev/mapper/EMC_00FD: lvm2 label detected
Found exported volume group "vg_mds" using metadata type lvm2
Unlocking/var/lock/lvm/V_vg_mds
Locking/var/lock/lvm/V_vg00RB
Finding volume group "vg00"
/dev/cciss/c0d0p4: lvm2 label detected/dev/cciss/c0d0p4: lvm2 label detected
Found volume group "vg00" using metadata type lvm2
Unlocking/var/lock/lvm/V_vg00Quoted 71 lines · brem belguebli
Hi,
Never had no problem with it.
The only problem I've hit was due to the binding file being, by default, located in
/var/lib/multipath, which is in my setup on a separate LV than /, during boot time the devices were not correctly created.Just had to switch the binding file to /etc and now no more problem.
extract of my
/etc/multipath.conf:defaults {
...
flush_on_last_delyes
user_friendly_namesyes
bindings_file"/etc/multipath_bindings"
}2010/1/4 Bryn M. Reeves <[email protected]>:
Quoted 26 lines · brem belguebli
Quoted 6 lines
Hi,
Quoted 12 lines
see man 5 lvm.conf there is an option called
preferred_nameswhich is well explainedIt'll instruct lvm to use the
preferred_namesyou configured in the lvm.conf file if they existie :
preferred_names= "/dev/mpath/" will use/dev/mpath/XXXinstead of/dev/mapper/XXXIt's best not to use the symlinks in
/dev/mpath- they are not always reliable. Use the device nodes created in/dev/mapperinstead.Regards,
Bryn.Quoted 10 lines
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read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/_______________________________________________
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read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
Signature · 8 lines
Simon Loewenthal/Tele2 GSM: +31 6 2000 5427 ******** IMPORTANT NOTICE ******** Please repect the X-Reply to klunky.co.uk. PGP available 0xD86A5A17. S/MIME PKCS12 key available for Lotus Notes: Please ask me for it. This e-mail (including any attachments) may contain information that is confidential or otherwise protected from disclosure and it is intended only for the addressees. If you are not the intended recipient, please note that any copying, distribution or other use of information contained in this e-mail (and its attachments) is not allowed. If you have received this e-mail in error, kindly notify us immediately by telephone or e-mail and delete the message (including any attachments) from your system. Please note that e-mail messages may contain computer viruses or other defects, may not be accurately replicated on other systems, or may be subject of unauthorized interception or other interference without the knowledge of sender or recipient. Tele2 only send and receive e-mails on the basis that Tele2 is not responsible for any such computer viruses, corruption or other interference or any consequences thereof. It ought to be obvious that my views do not represent my employer's views.
Quoted 3 lines
How do I really know LVM is really using the mutlipath other than disabling one of the ports on the switch, which I don't wish to do on a production box.
man multipath, specifically the -l and -ll flags.
I don't see the connection with multipath and the lvm.conf? Multipath is running well.
The setting :
write_cache_state = 1
is in the lvm.conf.
Quoted 13 lines · Eugene Vilensky
Quoted 4 lines
How do I really know LVM is really using the mutlipath other than disabling one of the ports on the switch, which I don't wish to do on a production box.
man multipath, specifically the -l and -ll flags.
_______________________________________________
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read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
Quoted 2 lines · On Mon, Jan 11, 2010 at 10:06 AM, Simon Loewenthal/NL/Tele2…
I don't see the connection with multipath and the lvm.conf? �Multipath is running well.
<quote>
How do I really know LVM is really using the mutlipath other than disabling one of the ports on the switch, which I don't wish to do on a production box.
</quote>
multipath -ll will show you your multipath topology. you can then see if the top-level multipath device matches the pvs that are in use (such as pvdisplay -v).
For "testing" multipathing, which you say is running well, look into dmsetup with which you can alter the topology and remove paths.