rename vg , lv and mount point

[ITSD-ACCS]

Hello,

I need to rename mount point, logical volume and volume group. I know renaming mount point is easy, but what about the others ? How do I do it if I know it is empty ?

The system is running on cluster, so I believe I need to change the vginfo of /etc/cmcluster, any other things that I have missed out ?


Example :
From
/dev/dvlp01/lvol1 /dvlp01
To
/dev/vg01/lv0l4 /prod04

Thanks

[Donald Kok · Accepted solution]

vgchange -an dvlp01
vgexport -v -m /etc/lvmconf/dvlp01.map /dev/dvlp01
vi /etc/lvmconf/dvlp01.map # and adjust like you want
mkdir /dev/vg01
mknod /dev/vg01/group c 64 01010000
vgimport -v /dev/vg01 -m /etc/lvmconf/dvlp01.map
vgchange -ay vg01

[Trond Haugen]

If by empry you mean there is no data on the lvols, you can just lvremove and vgremove them and create them anew.
It this VG is part of a ServiceGuard package you will need to remove the "old" lvols/vg on the other nodes and import the new.

Regards,
Trond

[Frederic Sevestre]

Hi,

If the filesystem is not mounted :

# mv dvlp01 prod04
# vgexport -v -s -m vg01.mapfile dvlp01
# vi vg01.mapfile --> replace lvol1 with lv0l4
# mkdir /dev/vg01
# mknod /dev/vg01/group c 64 0x010000
# vgimport -v -s -m vg01.mapfile vg01

If the filesystem is used by a SG package :
- edit the cluster configuration file and replace /dev/dvlp01 with /dev/vg01
- edit the package configuration file to change the vg info : VG[0]=... LV[]...FS[]...
- report the odifications to all the nodes.

I the filesystem is not used by SG then edit the fstab andmodify it.

Fr??d??ric

[ITSD-ACCS]

Thanks a lot ! But what if vg of dvlp01 has been partitioned into lvol2...lvol3, would vgexport /dev/dvlp01 affect other lv ?

[Frederic Sevestre]

Yes, all the dvp01's lv will now belongs to vg01. You can change their names editing the mapfile before the vgimport.

Fr??d??ric