Renaming a filesystem

[Paul Wright]

Rookie question. I have to reduce the size of a lv to free up wasted space and I want to go with one of the suggestions I read here....BUT....how do I rename a filesystem?. I have created a new one (b), transfered the info from the old one(a) to (b), then I want to delete (a) and rename (b). I hope this makes sense to someone out there.

Thanks in advance for any help
Paul

[Christopher McCray_1 · Accepted solution]

Hello,

I would unmount the filesystem , change the name of the directory, and change the name of the mountpoint directory in /etc/fstab and then mount /filesystem.

Hope this helps
Chris

[Sandip Ghosh]

I would do as follows:

Mount (b) on /tmp/abcd
cp * from (a) (b)
unmount (b)
unmount (a)
vi /etc/fstab for doing the required change for lvname
then
mount -a

Hope this helps,

Sandip

[Pascal Rouchon]

Yes you just have to umount the two filesystem then replace (a) by (b) in /etc/fstab then remount (b) filesysyem then delete the logical volume for (a)

[nancy rippey]

You don't have to rename the filesystem if you don't want. The procedures I use to solve this type of problem is

Say fsa is the original fs and
fsb is the new one with the correct size.

Create fsb with the correct size

copy over the data from fsa to fsb

unmount fsa

edit /etc/fstab

You should just need to change the lv# for fsa to the lv# you created for fsb.

Mount fsa backup up.

Hope this makes sense

nancy

[Patrick Wallek]

An example:

You have /dev/vg01/lvol1 mounted as /test. You configure /dev/vg01/lvol2 and you want that to be your new /test area with all data from /test. How do you do it?

1) mkdir /new_test
2) mount /dev/vg01/lvol2 /new_test
3) cp -Rp /test/* /new_test
4) umount /new_test
5) umount /test
6) mount /dev/vg01/lvol2 /test
(/dev/vg01/lvol2 just became your new /test area)
7) vi /etc/fstab
(change the line '/dev/vg01/lvol1 /test .....' so that it is now '/dev/vg01/lvol2 /test ....' so that the correct LV mounts as /test when the machine reboots.)
8) lvremove /dev/vg01/lvol1
(If you want to now get rid of it, that is)


Hope this helps!

[Christopher McCray_1]

Hello again,

Doing some cleanup here.

# remove the old logical volume, using lvremove or sam.

# remove the entry for (a) from /etc/fstab.
then proceed as above.

Sorry if I caused any confusion.

Chris

[Paul Wright]

Thanks to all. I'll say one thing, the response time here is phenomenal. Appreciate all the help.

Paul