how to remove a volume group which cannot be activated

[littlepig_1]

Hi, how can I force delete a volume group which cannot be activated?

Thanks

[Torsten.]

You can of course try to find the reason why you cannot activate it ...

Otherwise use vgexport.

[Steven E. Protter]

Shalom,

vgremove

vgremove is equivalent to the inverse of executing vgcreate for one
physical volume (see vgcreate(1M)).

Before removing a volume group, two steps are necessary:

1. Remove all the logical volumes belonging to the group by
using the lvremove command (see lvremove(1M)).

2. Remove all but one physical volume belonging to the volume
group by using the vgreduce command (see vgreduce(1M)).

Better overview:
http://docs.hp.com/en/5991-1236/When_Good_Disks_Go_Bad.pdf

SEP

[littlepig_1]

Hi,
vgremove require the volume to be activated...I cannot activate the volumen group, that's why vgremove cannot be used...

ps. the vg previously created to be used in serviceguard cluster..but after I deleted the cluster, the vg cannot be activated again..

[littlepig_1]

the error when I try to activate the vg is as follow:

Quorum not present, or some physical volumes are missing..

I used the command
"vgchange -a y -q n /dev/vgdatabase"

[Eric SAUBIGNAC · Accepted solution]

Bonjour,

The simpliest way to delete a volume group you can't activate is to export it with vgexport : vgexport /dev/

Regards

Eric

[James R. Ferguson]

Hi:

As noted, if you cannot activate the volume group in order to delete it, simply 'vgexport' it. To reuse the physical disks again, thereafter, you will need to perform a 'pvcreate -f' to obliterate the LVM header information that remains on it following the export.

Regards!

...JRF...

[Geoff Wild]

You deleted the cluster....

Did you try

vgchange -c n /dev/vgXX

then try

vgchange -a y /dev/vgXX

Rgds...Geoff

[Roberto Arias]

Hi

thay easiest way is:

vgexport of vg
rmdir -rf /dev/
pvremove of vg's disk

best regards