Renaming LV Online now possible on AIX 6.1 TL4 onwards
TL4 for AIX 6.1 now allows you to rename logical volumes (LV) while they are still online i.e. open.

In my case, my nimserver oslevel is:
guexnim01(/)#oslevel -s
6100-07-01-1141
root@guexnim01(/)#

Here is an example, my /backup is mounted over /dev/fslv00 filesystem. I am going to rename fslv00 to backlv.

guexnim01(/)#df -g |grep backup
/dev/fslv00      8.00      1.29   84%     2597     1% /backup
guexnim01(/)#

guexnim01(/)#lsvg -l nimvg |grep backup
fslv00              jfs2       16      16      1    open/syncd    /backup
guexnim01(/)#

Lets change the name from fslv00 to backuplv, while the filesytem is mounted.

guexnim01(/)#chlv -n backuplv fslv00

Lets verify:


guexnim01(/)#df -g |grep backup
/dev/backuplv      8.00      1.29   84%     2597     1% /backup
guexnim01(/)#

guexnim01(/)#lsvg -l nimvg |grep backup
backuplv            jfs2       16      16      1    open/syncd    /backup
root@guexnim01(/)#

guexnim01(/etc)#more filesystems |grep -p /backup
/backup:
        dev             = /dev/backuplv
        vfs             = jfs2
        log             = /dev/loglv00
        mount           = true
        options         = rw
        account         = false

guexnim01(/etc)#