LVM ount point manipulation

[Kwahae_1]

I need to rename two mount points on two different volume groups. See attached. Is there a command just to rename the moun point tempstuff as tmp or I have to go thru deleting both and recreating the file systems?

[V. Nyga · Accepted solution]

Hi,

you can change the mount points in /etc/fstab and reboot the system.
So 'tempstuff' to 'tmp' and 'tmp to ''.

Volkmar

[melvyn burnard]

mount points have nothign to do with the file systems, theyare just "hooks" or connectors" that you "connect" your file system to.

In your case, you can either do:
umount /tmpstuff
mkdir /
mount /dev// /
e.g. mkdir /newstuff
mount /dev/vg01/lvol1 /newstuff

Then modify the entry in /etc/fstab to reflect the new mount point for the next boot.

OR
just mkdir the new mount point, and modify the /etc/fstab file to refelect the new mopunt point, and wait for the nextsystem boot.

[lawrenzo_1]

first of all I would not rename the mountpoint /tmp as the system will use this for some temporary files.

the oratmp logical volume cannot have the same mount point as /tmp because to logical volumes cannot share the same mount point.

what are you trying to achieve?

if you want all oratmp stuff to go into /tmp it may be worth just changeing the /tmpstuff mount point to /tmp/tmpstuff

tar the data in /tmpstuff

unmount /tmpstuff (only can be done if there are no active processes or app is down)

mount /dev/vgxx/oratmp /tmp/tmpstuff

then untar the data into /tmp/tmpstuff

finally edit /etc/fstab so the filesystem will mount during boot.

[V. Nyga]

It seems like you want to increase the tmp-directory - by taking a new disk.
As said before it's almost impossible to umount /tmp when the system is running, because there are always files used in /tmp.
So you've to reboot it or at least go into single user mode and unmount /tmp.

HTH
Volkmar

[Kwahae_1]

Thanks all will play with file /etc/fstab and reboot.