volume group not activated

[Arnold_14]

Hi,

A little bit history, last night the SAN admin decided to un-install EMC PowerPath software because it was giving us problems. After he rebooted the box, the volume groups were all gone!! This morning I tried to mount filesystems manually, and it said "Volume Group not activated"

Some outputs

# vgchange -a y /dev/skyplan1
vgchange: Warning: Couldn't attach to the volume group physical volume "/dev/dsk/c17t0d0":
I/O error
vgchange: Warning: couldn't query physical volume "/dev/dsk/c17t0d0":
The specified path does not correspond to physical volume attached to
this volume group
vgchange: Warning: couldn't query all of the physical volumes.
vgchange: Couldn't activate volume group "/dev/skyplan1":
Quorum not present, or some physical volume(s) are missing.

# vgdisplay -v /dev/skyplan1
vgdisplay: Volume group not activated.
vgdisplay: Cannot display volume group "/dev/skyplan1".

Help.
Thanks so much
Arnold

[Hazem Mahmoud_3 · Accepted solution]

Check this out, similar problem as yours and it looks like his problem was solved in this thread:

http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=199648

-Hazem

[KapilRaj]

Can you confirm all the disks are present by ioscan -fnC disk

Regds,

Kaps

[Arnold_14]

I got the VG back :)

I did vgscan -v, I had some missing controllers.

Then, vgchange -a y

Then, lvlnboot -R

Then, mountall

Everything is back !!

[Fabio Ettore]

Hi Arnold,

it sounds like an LVM configuration problem.

# vgcfgrestore /dev/vg01

HTH.

Best regards,
Ettore

[Fabio Ettore]

Ok, I am writing when you posted.

Best regards,
Ettore

[Todd McDaniel_1]

First, shoot your EMC tech...

Second, try to do ioscan/insf -e... possibly vgscan might work first.

Next, try to vgimport or vgcfgrestore your disk information.

[Todd McDaniel_1]

one more thing... Make sure you have PVlinks activated so if your h/w path fails... you will have a fail over path...


also, know this that your thruput i/o will suffer greatly w/o Powerpath... so expect worse I/o from now on.


no points here. plz

[Kang Sun_1]

My question is a little different. When I do 'lvlnboot -v", I got
....
lvlnboot: Volume group not activated.
Cannot display volume group "/dev/data".

The volume group /dev/data does not exist from SAM. It must be left over from previous configuration. The question is how to clean it up! Should I simply delete /dev/data or I need to do something else.

-- Kang