vgdisplay: Couldn't query volume group /dev/vg00

[aaa_37]

Hi All,

Ref: HP DocId KBRC00007480

Is there any solution does HP has provided for this problem. I need to prevent this problem happening. Please let me know.

I am facing the same problem while vgdisplay -v /dev/vg00
vgdisplay: Couldn't query volume group /dev/vg00
Possible error in the Volume group minor number.

I need to prevent this problem happening rather than workaround to solve this.

Thanks in advance

[Stefan Farrelly]

Check the following by doing;

cd /dev
ll */group

This shows all your VG group files - their output should all be different, eg;

/dev/vg00/group 0x000000
/dev/vg01/group 0x010000
...

[T G Manikandan]

Hello,

#cp -p /etc/lvmtab /etc/lvmtab.currentdate
#vgscan -v

Now check using vgdisplay

Thanks

[T G Manikandan]

check this link

http://forums.itrc.hp.com/cm/QuestionAnswer/1,,0x907637f45ef7d4118fef0090279cd0f9,00.html

[aaa_37]

Hi All,

Thanks for your reply!!

I need to prevent this problem happening rather to solution to fix this problem. According to HP this problem happened due to patch PHCO_21630. Does HP has provoided any solutions to this problem?

Please go thru' HP DOC id KBRC00007480

[Stefan Farrelly]

PHCO_21630 is an old 'LVM commands cumulative' patch, it was replaced in the Dec2001 patch bundle with PHCO_23791 and in the Mar2002 patch bundle with PHCO_24437. Why dont you try updating to the latest version of this patch ?

[Trond Haugen]

My understanding of KBRC00007480 is that the patch introduces a check for consistency of the VGID between the lvmtab and disks to avoid VGs with the same minor number. That is probably the reason for the error message you get. So it only reports a problem that has been around for a while.
Why the difference appeared in the first place I really couldn't say. Is the minor number for vg00 0x000000?

Regards,
Trond

[arun kumar v]

Hi,

First of all is this a problem "ONLY" due to installing this PATCH (PHCO_23791)?.
Or is it could be of because that the two volume groups had the same(unique) minor number. If this is because of unique minor number what could be the cause for two vg's to have the same minor number.


Thanks,
Arun kumar