decomissioning a vg

[khilari]

Hi there, just wondering what would eb the steps to decomission a vg.
clean up all related to vg instance like fs-s, lvols, release disks, remove vg related UID-s ,... but we have have to capture disks assigned and remove device files...

Now this is what i got... I can get rid of lvols by lvremove but what about UIDS associated with the VG. How do i go about getting rid of that...

[Robert-Jan Goossens]

Hi,

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

Regards,
Robert-Jan

[James R. Ferguson]

Hi:

> but what about UIDS associated with the VG

Do you mean the LVM VGID and PVID on the disk? If so, you can do:

# pvremove /dev/rdsk/cXtYdZ

...for 11.23 or later; or:

# dd if=/dev/zero of=dev/rdsk/cXtYdZ bs=1024k count=100

Regards!

...JRF...

[James R. Ferguson]

Hi (again):

...and I mean do the 'pvremove' or 'dd' AFTER you have 'vgexport'ed the volume group and have decided to destroy all LVM headers on the physical volume...

Regards!

...JRF...

[khilari]

ok so the way i look at it. I have to do the following:
1)umount all fs's
2) lvremove all lvols.
3)vgreduce all pvs
4) vgexport the volume group.
5) now what about the uid's related to this volume group am i missing something...

[James R. Ferguson]

Hi (again):

1. Unmount the filesystems and edit '/etc/fstab' so they aren't there the next time you reboot.

2. vgchange -a n vgNN

3. vgexport vgNN

4. pvremove /dev/rdsk/cXtYdZ

Step-4 is optional, assuming my original comments; viz. that you never want to 'vgimport' this volume group again. Again, I am assuming the by "UID" you mean the LVM header information, not "user-IDs".

Regards!

...JRF...