Weird UUIDs

I tried running pvdata -U on one of my LVM servers and it segfaulted (LVM driver version 0.9.1_beta6). Check out the UUIDs. Everything is working OK but I wonder if this is a serious problem or not? This is a single physical volume LVM running on top of hardware RAID 5.

pvdata -Uvv /dev/sda7

pvdata -- reading physical volume data from disk
pvdata -- reading volume group data from disk
--- List of physical volume UUIDs ---

Segmentation fault

pvdata /dev/sda7

--- Physical volume ---

PV Name               /dev/sda7
VG Name               data_vg
PV Size               133.36 GB / NOT usable 321 KB [LVM: 255 KB]
PV#                   1
PV Status             available
Allocatable           yes
Cur LV                6
PE Size (KByte)       4096
Total PE              34140
Free PE               7015
Allocated PE          27125
PV UUID               /dev/s-da7

--- Volume group ---
VG Name

VG Access             read/write
VG Status             NOT available/resizable
VG #                  0
MAX LV                256
Cur LV                6
Open LV               0
MAX LV Size           255.99 GB
Max PV                256
Cur PV                1
Act PV                1
VG Size               133.36 GB
PE Size               4 MB
Total PE              34140
Alloc PE / Size       27125 / 105.96 GB
Free  PE / Size       7015 / 27.4 GB
VG UUID               data_v-g

--- List of logical volumes ---

pvdata -- logical volume "/dev/data_vg/home_lv" at offset 0
pvdata -- logical volume "/dev/data_vg/var_lv" at offset 1
pvdata -- logical volume "/dev/data_vg/usr_lv" at offset 2
pvdata -- logical volume "/dev/data_vg/news_lv" at offset 3
pvdata -- logical volume "/dev/data_vg/test_lv" at offset 4
pvdata -- logical volume "/dev/data_vg/its_lv" at offset 5
pvdata -- logical volume struct at offset 6 is empty
....

vgdisplay

--- Volume group ---

VG Name               data_vg
VG Access             read/write
VG Status             available/resizable
VG #                  0
MAX LV                256
Cur LV                6
Open LV               5
MAX LV Size           255.99 GB
Max PV                256
Cur PV                1
Act PV                1
VG Size               133.36 GB
PE Size               4 MB
Total PE              34140
Alloc PE / Size       27125 / 105.96 GB
Free  PE / Size       7015 / 27.4 GB
VG UUID               data_v-g

Output just tells you, that no UUIDs have been created dynamically so far. If you create/remove a dummy LV, they should be there...

No, it is not. Just try the lvcreate/lvremove pair on a small (-l 1) dummy LV.

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
56242 Marienrachdorf Germany
[email protected] +49 2626 141200

                                                       FAX 924446

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Heinz,

I created and them removed a small LV and now the UUIDs look more familiar. :-) Thanks.

pvdata /dev/sda7

--- Physical volume ---

PV Name               /dev/sda7
VG Name               data_vg
PV Size               133.36 GB / NOT usable 321 KB [LVM: 255 KB]
PV#                   1
PV Status             available
Allocatable           yes
Cur LV                6
PE Size (KByte)       4096
Total PE              34140
Free PE               7015
Allocated PE          27125
PV UUID               C4Txkv-FIqY-RKJ4-OEoo-cTWc-LqZb-wFDBH0

--- Volume group ---
VG Name

VG Access             read/write
VG Status             NOT available/resizable
VG #                  0
MAX LV                256
Cur LV                6
Open LV               0
MAX LV Size           255.99 GB
Max PV                256
Cur PV                1
Act PV                1
VG Size               133.36 GB
PE Size               4 MB
Total PE              34140
Alloc PE / Size       27125 / 105.96 GB
Free  PE / Size       7015 / 27.4 GB
VG UUID               XXUlZt-SdDC-3who-JMDC-13P1-adqU-MKgQrv

.......