how to extend /usr ,

[常有慈悲心]

without reboot ,without onlinejfs

[Rajeev Shukla]

I am sorry there is no way you can extend /usr without a reboot.
You need to reboot the system and go to single user to extend /usr

Other option you can choose is if you have something else other than system files..like /usr/local/bin occupying space, you can create another filesystems and copy all those files there.

[Naveej.K.A · Accepted solution]

hi,

I don't think you will be able to umount /usr without rebooting. There will be lot of processes which has started from /usr. You need to boot into single user mode or lvm maintenance mode.

and then

umount /usr (it will not be mounted though)
lvextend -L newsize /dev/vg00/lvol5
extendfs -F vxfs /dev/vg00/rlvol5
mount /usr

with best wishes
Naveej

[Shaikh Imran]

Hi,
Its not possible to extend the /usr filesystem without reboot.


Regards,

[Joseph Loo]

hi,

for /usr, u need to reboot and since without online JFS:

u may do a shutdown but most importantly, u must break the 10 seconds before u can proceed to single user mode via:

after breaking to PDC Menu --> bo pri

ISL> hpux -is

since it is the logical volume of /usr u r increasing:
# /sbin/lvextend -L /dev/vg00/lvol#
# /sbin/extendfs -F vxfs /dev/vg00/rlvol#
since the /etc/default/fs is hfs, unless u want to amend the file to vxfs
# mount /usr
# lvdisplay /dev/vg00/lvol#
# mount /usr
# bdf
to check if the size is correct.

regards.

[Simon Hargrave]

Since many core processes live and use /usr (eg inetd and its siblings) you've no choice but to reboot.

For reference though, if you need to do the same to other filesystems in future (eg /opt which often may have things like ITO agents which can be temporarily shut down), you can do something like: -

for PID in `fuser -c /opt`
do
ps -p $PID | grep -v PID
done

This will list all processes using that filesystem. Look at the list, and if you can cleanly shut down all the processes, and start them, without affecting your application, then you can do it this way.

[KapilRaj]

/usr ?. Why do you have to increase it ?. It just do not contain any temp files or logs.

Check for a coredump and remove it.

find /usr -name core -print

Kaps