LVM disk structure recovery

[jose da silva]

pvcreate -f was done on the wrong lun " disk ". Is there any way to recover LVM structure "the BDRA, VGID etc" from the disk? Is the data completely lost ?

[Torsten.]

You can try a "vgcfgrestore ...".


Guess why pvcretae gives an error when using without "-f" on a LVM disk...

[jose da silva]

Thanks Torston

That seemed to work it looks like it recovered the Volume structure but we cannot access the data. Any ideas ?

[Torsten.]

Is it a mirrored disk?

Did you restore the *.old configuration file?

[jose da silva]

Yes it was a mirrored volumegroup, unfortunatly the pvcreate -f was done on both disk devices.
vgcfgrestore was done and completed successfully but still having problems accessing the data.

[Torsten.]

It is important to restore the *.old configuration file, because the other backup file has the same information like the disk currently has. So you probably loose the information about the LVOLs completely.

What does "vgdisplay -v" and pvdisplay tell you?

[Sujit]

In your case, It is impossible to recover the data. You need to restore from latest backup.

[jose da silva]

See atatched vgdisplay etc.

[HP-UX_Ali · Accepted solution]

Hi Silva,
After vgcfgrestore, replace the old configuration file. once this is done do vgscan and possible do fsck on it.
then try to mount all volumes by mount -a.

Do the above excercise, should have recover the data.

Regards
Ali.

[RajuD]

can you please post the pvdispaly -v output on the disk you have given pvcreate.