Hi all,
How do u rename a logical volume group and the logical volumes belonging to that? The logical volumes contain data and are in use.
eg: Renaming dev/vgov to dev/ov-dg ?
The easiest would be an export / import of the VG...(man vgexport/vgimport...)
This should rename the lvols. Once you do that then you can use vgexport and rename the VG's with a map file. Best to try this on a test VG first.
- umount /<oldname>
- mv /dev/vgxx/<oldname> /dev/vgxx/<newname>
mv /dev/vgxx/r<oldname> /dev/vgxx/r<newname> - Modify the /etc/fstab file to reflect the newname.
- mount /dev/vgxx/<newname> /<oldname>
or
mount -a
NOTE: if you would also like to change the mount point to <newname>
do the following before step 3 above:
mkdir <newname>
rmdir <oldname>
Then modify step 3 and 4 above to reflect the newname
Can i rename the group first and then the lvols?
I don't see any reason why not. Do it on a test VG before you try it on a production one.
Well yes you can!!! Follow the below and that's it to change vg and lv as well..
Export the VG:
- # umount /oldmountpoint
- # vgchange �a n vgname
- # vgexport �s �v �m /etc/lvmconf/vgname.map vgname
Rename the VG directory, edit LV names, and re-import:
- # mkdir /dev/newvgname
- # mknod /dev/newvgname/group c 64 0x010000 (Minor number example. Please ensure that it's unique)
- # cp /etc/lvmconf/vgname.map /etc/lvmconf/newvgname.map
=>If you want to change your logical volume names, simply use the vi editor to modify the names in the map file. - # vi /etc/lvmconf/newvgname.map
VGID 0a0a0a0a0
1 newlvname - # vgimport �s �v �m /etc/lvmconf/newvgname.map newvgname
- # vgchange �a y newvgname
- # vgcfgbackup newvgname
- # mv /oldmountpoint /newmountpoint
- # vi /etc/fstab => add entry
- # mount -a
-You're done!
Please let us know if you find any issues!
-DB
THanks,
Did exactly as u mentioned-
First renamed the lvols,using umount, mv and then modified /etc/fstab, then mount -a
THen modified the group as explained.
