extending /tmp

[Susan W Roden]

Do I need to be in single user mode to extend the /tmp directory? I use online JFS with LVM and Disk Mirroring.

[Alan Riggs]

No, you do not need to be in single user mode.

With online JFS, you do not even need to umount the directory. Do:

lvextend -L /dev/vg00/lvol6 (or whatever is mounted on /tmp)

fsadm -F vxfs -b /tmp

[federico_3]

No, you do not need to be in single user mode if you have JFS online.

Do like this:

lvextend -L /dev/vg00/lvxxx (logical volume mounted on /tmp)

fsadm -F vxfs -b /tmp

After this type ( in order to check the extension): bdf /tmp


regards,

federico

[Johan Carlsson]

To extend /tmp with online JFS you should do as stated in the two earlier responses, I just wanted to add a thing to the fsadm command:

fsadm -F vxfs -b $(expr * 1024) /tmp

For example if /tmp is to be increased to 500 MB:
fsadm -F vxfs -b $(expr 500 * 1024) /tmp

Hope this is of help to you.

Regards
Johan Carlsson

[Johan Carlsson]

I saw that there was an error after I posted my answer.

You should use backslash before the asterisk (*)
fsadm -F vxfs -b $(expr 500 * 1024) /tmp

Sorry about this.

/Johan

[Harish Kumar Sudhamalal]

No. You do not need to bring the server to single user mode. This is because you have the ONLINE JFS Product installed on your server.

You can follow the steps mentioned above.

[Bruce Regittko_1]

Insted of using the $( expr ... ) syntax, I would suggest using $(( 1024 * MB )). Thus, the command would be

fsadm -F vxfs -b $(( 1024 * 128)) /tmp

for a 128 MB /tmp filesystem. This is a little more readable than mixing the POSIX $(cmd) syntax with the Bourne expr command, IMO.