topic deleted vg in Operating System - HP-UX

deleted vg

Mazen Al-Jarrah — Sun, 04 Jan 2004 05:24:15 GMT

Hello everone,

I've deleted a vg by mistake using sam, is there any way to get it back...?

also I can't delete a "lv" I'm getting the message
lvremove: Couldn't delete logical volume "/dev/vg01/lvol_itmscdb": x x
xx lvx The supplied lv number refers to a non-existent logical volume.

thanking you in advance for your cooperation and help

Re: deleted vg

Rajeev Shukla — Sun, 04 Jan 2004 05:30:38 GMT

The only way you can restore the deleted VG is if you have not done anything else on the disk and you have either the vgmap file or vgcfgbackup file. Check in /etc/lvmconf directory for the file.

I am sure the LV name you are using to delete is wrong, do a vgdisplay -v /dev/vg01 and see if you have the LV with the name, which you are trying to delete.

Re: deleted vg

Mazen Al-Jarrah — Sun, 04 Jan 2004 05:38:14 GMT

I didn't do anything on the vg still all the files are there in /etc.

regading the name I'm using sam to delete it so the name could not be wrong

Re: deleted vg

Rajeev Shukla — Sun, 04 Jan 2004 05:56:40 GMT

Ok if you have the volume group config file for this vg (should be same name) in /etc/lvmconf and you also know the disk which where there in the VG, then have a look at man pages of vgcfgrestore and do a vgcfgrestore on all the disks involved in that VG.

Do a lvdisplay -v /dev/vg01/lvol1_itmscdb
and vgdisplay -v /dev/vg01
what do u see? does the name match?

Re: deleted vg

Mazen Al-Jarrah — Sun, 04 Jan 2004 08:07:29 GMT

thanks for the reply

I managed to restore the vg but I can't delete the lv.
using lvdisplay I can see a long list like the followings
00489 /dev/dsk/c0t8d0 00489 current
00490 /dev/dsk/c0t8d0 00490 current
00491 /dev/dsk/c0t8d0 00491 current
00492 /dev/dsk/c0t8d0 00492 current
00493 /dev/dsk/c0t8d0 00493 current
00494 /dev/dsk/c0t8d0 00494 current

Re: deleted vg

G. Vrijhoeven — Sun, 04 Jan 2004 16:16:17 GMT

Hi,

You should be able to reduce the lvol.

Make sure it is not still mounted. ( bdf /mount/cat /etc/mnttab )
if do umount the lvol using the umount command.
lvrecude the lvol ( lvreduce -f /dev/vg01/lvol.... )

Gideon

Re: deleted vg

Rajeev Shukla — Sun, 04 Jan 2004 17:26:32 GMT

How are you trying to delete the LVs, by SAM or lvremove,
use lvremove -f /dev/vg01/...(lvol) to remove the LV and let us know what error you get.