renaming logical volumes

[Wessel Baptist]

Hi,

is it possible to rename a logical volume under HP-UX 10?

Thanks already.

[John Palmer · Accepted solution]

Yes, no problem.

Make sure it's not in use, unmount it if it's a filesystem then rename both the character and block device files in /dev/vg?

Edit /etc/fstab if necessary.

[Tim Malnati]

An added item to John's solution. /etc/lvmtab is no longer valid and needs to be rebuilt. Move the existing file with something like 'mv /etc/lvmtab /etc/lvmtab_beforechange'. Then perform a 'vgscan' to rebuild /etc/lvmtab. After this is done perform a 'vgcfgbackup' to get everything in order.

[John Palmer]

Tim,

Renaming the logical volumes does not affect /etc/lvmtab in any way. lvmtab only holds details of the volume groups and which disks they consist of.

The ONLY place in the system that defines the volume number within the volume group is the device file in /dev/vg??.

[Wessel Baptist]

John, your answer works fine, thanks! But does vgcfgbackup add any security?

[John Palmer]

Not in this case because nothing has changed within the volume group itself. All that you've changed is an external pointer to the volume number within the volume group.

[박수정]

Hi!

No problem!

Example)

/dev/vg01/lvol9 1000 600 400 60% /fsname

1. #mount /fsname

2. #mv /dev/vg01/lvol9 /dev/vg01/lvname
#mv /dev/vg01/rlvol9 /dev/vg01/rlvname

3. #vi /dev/fstab

from /dev/vg01/lvol9 /fsname vxfs ....
to /dev/vg01/lvname /fsname vxfs ....

4. #mount /fsname