getting rid of a volume group

[khilari]

Hi guys, i have a volume group that i have to decommission... What are the steps i need to take and i also have to forfeit the disk space so that they could be used some where else..
Let me know what u think about it.
Thanks

[Robert-Jan Goossens]

Hi,

Umount the filesystems, vgchange -a n the volume group and vgexport the volume group.


# umount /filesystem
# vgchange -a n /dev/vgxx
# vgexport /dev/vgxx

Robert-Jan

[Todd McDaniel_1]

Before you vgexport the vg, I would document the volume group info so you know which disks are being reclaimed.

vgdisplay -v > .date.out

Also, just in case you ever wanted to rebuild that exact volume group again....

vgexport -p -s -m mapfile.date.out -v /dev/vgname

[Steven E. Protter]

Shalom,

Back up the data
remove all logical volumes with lvremove
vgexport (If you might want it back)

vgremove the volume group.

SEP

[Todd McDaniel_1]

Before you vgexport the vg, I would document the volume group info so you know which disks are being reclaimed.

vgdisplay -v vgname > vgname.date.out

Also, just in case you ever wanted to rebuild that exact volume group again....

vgexport -p -s -m mapfile.date.out -v /dev/vgname

[khilari]

so after doing lvreduce and vgexport will the disks be available for reuse then... Or do i have to do anything else to reuse them.

[Mridul Shrivastava]

lvreduce is not required as vgexport will solve the purpose.

Once vgexport is executed those disk can be used for other purposes, u might have to execute pvcreate -f on the disks which are free now so you won't face any issue at the time of vg creation.

[Michael Steele_2]

To verify your 'vgexport' worked use 'pvdisplay /dev/dsk/c#t#d#'. Before reusing the disks use 'pvcreate -f /dev/dsk/c#t#d#', or, if a boot disk, then add in the -B option. :-)