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Problems with LVM 1.0.6

linux-lvm Bas 2 participants 2 messages Feb 24, 2003 – Feb 25, 2003

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Bas

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#0 lore raw

Hi there,

I'm using LVM 1.0.6 on 2.4.20 with devfs 1.99.17. I used LVM on 2 disks, with two different VG's.

It wasn't possible for me to create an LV as soon as it reached minor number
16. I seem to have deleted the output of this command, but it was "No such device or address". I deleted the other VG and it's LV's and recreated the LV and it worked.

My setup is this:
1 on-board SCSI (Adaptec 7880) controller with one disk - sda. 1 PCI Adaptec 2940UW controller with one disk - sdb.

sda, Like sdb has 2 partitions. PV's were created on the second partitions. sda2 was rootvg, sdb2 was vg00. A couple of logical volumes with minor numbers 0-3 where on vg00, the rest was on rootvg.

pvdisplay -v /dev/sda2
--- Physical volume ---

PV Name               /dev/scsi/host0/bus0/target0/lun0/part2
VG Name               rootvg
PV Size               8.45 GB [17719695 secs] / NOT usable 16.19 MB [LVM:
130 KB]
PV#                   1
PV Status             available
Allocatable           yes
Cur LV                12
PE Size (KByte)       16384
Total PE              539
Free PE               275
Allocated PE          264
PV UUID               l7p6er-GiqY-mYAW-Awsi-zB0h-CFUp-o9fga6

I wonder why 16.19MB would not be usable, since system/kernel/* logging doesn't report anything about failing disks.
PE size is 16MB.

Thanks,
Bas.

#1 lore raw
Quoted 9 lines · Bas

Hi there,

I'm using LVM 1.0.6 on 2.4.20 with devfs 1.99.17. I used LVM on 2 disks, with two different VG's.

It wasn't possible for me to create an LV as soon as it reached minor number
16. I seem to have deleted the output of this command, but it was "No such device or address". I deleted the other VG and it's LV's and recreated the LV and it worked.

Could it be that there was an old node still around from an unclean volume group removal ?

"rm -r /dev/rootvg; vgmknodes" should clean this up for you in case it happens again.

Quoted 25 lines

My setup is this:
1 on-board SCSI (Adaptec 7880) controller with one disk - sda. 1 PCI Adaptec 2940UW controller with one disk - sdb.

sda, Like sdb has 2 partitions. PV's were created on the second partitions. sda2 was rootvg, sdb2 was vg00. A couple of logical volumes with minor numbers 0-3 where on vg00, the rest was on rootvg.

pvdisplay -v /dev/sda2
--- Physical volume ---

PV Name               /dev/scsi/host0/bus0/target0/lun0/part2
VG Name               rootvg
PV Size               8.45 GB [17719695 secs] / NOT usable 16.19 MB [LVM:
130 KB]
PV#                   1
PV Status             available
Allocatable           yes
Cur LV                12
PE Size (KByte)       16384
Total PE              539
Free PE               275
Allocated PE          264
PV UUID               l7p6er-GiqY-mYAW-Awsi-zB0h-CFUp-o9fga6
Quoted 3 lines

I wonder why 16.19MB would not be usable, since system/kernel/* logging doesn't report anything about failing disks.
PE size is 16MB.

Because you choose to have a PE size of 16384K and LVM reserves at least 1 PE for future metadata extension.

Not to worry about with 8G ;)

Quoted 10 lines

Thanks,
Bas.

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Signature · 15 lines
Regards,
Heinz    -- The LVM Guy --

*** Software bugs are stupid.
    Nevertheless it needs not so stupid people to solve them ***

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Heinz Mauelshagen                                 Sistina Software Inc.
Senior Consultant/Developer                       Am Sonnenhang 11
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[email protected]                           +49 2626 141200
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