Removing a Volume Group

[Bruce Troutman]

I have a volume group that I am about to remove. It spans over 4 disks (2 primary, 2 mirrored). I need to remove the volume group /dev/vg02 so that I can later use these disks for extending my other volume groups.

Here is my plan, please let me know if i am using the correct logic/syntax to make this happen.

Thanks

UNmount filesystems on VG.
#umount /filesystem

Break the mirror (lvol1 expands over 2 disks)
#lvreduce -m 0 /dev/vg02/lvol1 /dev/rdsk/primary_dsk_1 /dev/rdsk/primary_dsk_2

deactivate VG
#vgchange -a n /dev/vg02

Remove LVM data
#vgexport -v /dev/vg02

[Jeff Schussele · Accepted solution]

Hi Bruce,

That's OK, but there's no need to break the mirror.
Just unmount, deactivate & vgexport.

Rgds,
Jeff

[S.K. Chan]

Don't bother breaking the mirror.
# umount /filesystem
# vgchange -a n /dev/vg02
# vgexport -v /dev/vg02

Later you need to "pvcreate -f" on those disks that you want to re-use.

[Helen French]

As anyway you are going to remove this VG, I won't do anything with mirror (reduce, remove LVs etc). Just unmount file systems, deactivate VG and vgexport it. When you use these disks in any other VGs, you may need to use the '-f' (force) option with pvcreate.

[PIYUSH D. PATEL]

Hi,

No need to do a lvreduce and break the mirror. Simply umount the filesystem, deactivate the vg and export it.

Piyush

[MANOJ SRIVASTAVA]

Hi Bruce

Do like this

1. umoun the files sytems on that VG
2. vgcahnge -a n /dev/vg02
3. vgreduce /dev/vg02 /dev/dsk/cxtydz



Manoj Srivastava

[Bruce Troutman]

Thanks guys, I wasn't sure about the mirror part.