How to remove a Volume group without destory the data

[Leon Shen]

Hi Experts,

The rp3410 connect with DS2120 and Daisy Chain with 1 Scsi enclosure. After I copy all the data from scsi cnclosure to DS2120. What is the step to remove the volume group in scsi enclosure. Vg00 is the OS volume group. Lets say vg01 is under scsi enclosure. How do I remove the volume group without destory the data? Here is the step :

1.#lvremove -f /dev/vg01/data
2.#vgreduce vg01 /dev/dsk/c0t2d0
3.#vgremove vg01

Please correct if I made mistake

Best regads
Leon

[Radhakrishnan Venkatara]

Hi,

Use vgexport command.

#vgexport -m map file vgname.

It exports vg from the system. Data will not be removed.

Regards
Radhakrishnan

[Joseph Loo]

hi,

vgremove will destroy everything about that volume group but vgexport allows u to import the data back (vgimport):

try this:

# umount
# vgchange -a n /dev/vg01
# vgexport -m /tmp/vg01_mapfile -s -v /dev/vg01
# strings /etc/lvmtab
check if vg01 still remains
# vi /etc/fstab
comment off the vg01 file systems

also refer to this doc:

http://www1.itrc.hp.com/service/cki/docDisplay.do?docLocale=en_US&docId=200000075095108

regards

[Trond Haugen]

If you lv/vgremove you COULD re-create if you know the EXACT procedure/sequence the volumes was created and extended.
vgexport is that safe way.

Regards,
Trond

[Geoff Wild]

Use vgexport....then vgimport to bring it back....

But why don't you want to remove the data? Sounds like you are migrating from the SCSI enclosure to a DS2120 - why do you need the data on the SCSI enclosure?

Rgds...Geoff