Unable to remove a VG

[Sampath_4]

I have an unused VG with a single disk . Now i need the disk to extend another VG. But when i tried to remove the VG using vgreduce /dev/vg05 it says that the VG is not activated.

Then i tried activating the VG using

vgchange -a y /dev/vg05 but it says
Couldn't query the list of physical volumes. Quorum not present, or some physical volume(s) are missing.

even i tried disabling quorum
vgchange -a y -q n /dev/vg05

that is also not activating the VG.

Is there is any other way around

[Robert-Jan Goossens_1 · Accepted solution]

Sampath,

Try
# vgchamge -a n /dev/vg05
# vgexport /dev/vg05

Robert-Jan

[Matti_Kurkela]

You cannot vgreduce the last PV out of a VG. You must destroy the VG to get that PV free.

Two ways to get rid of vg05:

1.) First lvremove all logical volumes from vg05, then "vgremove vg05". After that, the disk is free for other use.

2.) "vgexport vg05". This removes the volume group and all logical volumes in it from the current LVM configuration. It also creates a map file for restoring the volume group, but in this situation you don't need it.
This can (and actually must) be done when the volume group is not activated, so you can do this even if "vgchange -a y vg05" cannot be made to work.

[Victor BERRIDGE]

And the best way is the export as Robert Jan has mentionned
I would pvcreate -f the disk again to avoid all messages of used disks then vgextend


All the best
Victor

[Mridul Shrivastava]

I would suggest you to do vgexport and then pvcreate on the disk, then you can extend the vg to this disk.

[Robert-Jan Goossens_1]

sorry for my typo!

# vgchange -a n /dev/vg05
# vgexport /dev/vg05

[Sampath_4]

Thanks all,

vgexport helped to make it