topic Re: increase logical volume in Operating System - HP-UX

increase logical volume

szhiyong — Mon, 04 Mar 2002 10:22:11 GMT

Hi,

I tried to use SAM to increase one logical volume, but I got the error message "the device is busy". I think it is because the directory need to unmount. But I try " umount /usr2", I still got "device busy" error.

Would someone help me to solve this problem?

Thanks a lot for your help.

Zhiong

Re: increase logical volume

Olivier LEGRAND — Mon, 04 Mar 2002 10:24:21 GMT

Hi,

Use the "fuser -u /usr2 " to know who is working on this file system.

Regards

Re: increase logical volume

Vijeesh CTK — Mon, 04 Mar 2002 10:28:43 GMT

hi,

do a fuser -cu /usr1 to find otu what processes are using that file systems. kill all the processes.

either by

fuser -ku /usr1 or
kill processes one by one

this will help u

Vijeesh CTK

Re: increase logical volume

Corthouts Carlo — Mon, 04 Mar 2002 10:29:10 GMT

Hi,

First you need to unmount the filesystem, but if anyone is working on any of the files located under this filesystem you will
receive the device is busy error message.

fuser will not always show you what process or user is working on /usr2 but maybe you should try lsof which will show you all open files under this directory.

Best is to install online jfs and get a license to use it. This will help you reduce downtime for the users and the system and you can perform almost all actions online while the filesystem is mounted.

Re: increase logical volume

Robin Wakefield — Mon, 04 Mar 2002 10:32:17 GMT

Hi Zhiong,

Add the "-c" option since it is a mount-point:

fuser -c /usr2

otherwise it won't necessarily pick up all processes that have files open within the filesystem.

Rgds, Robin

Re: increase logical volume

Trond Haugen — Mon, 04 Mar 2002 12:52:16 GMT

It is only if you have OnlineJFS (Advanced VxFS) that you don't have to umount the filesystem.

Trond

Re: increase logical volume

Sanjay_6 — Mon, 04 Mar 2002 14:09:30 GMT

Hi,

Try this,

fuser -cu /mount_point

This will list the user and the processes using the mount point. To kill all the processes or users,

fuser -ck /usr2

Check for the list of processes/users using this mount point once again. IF no process is listed, you should be able to unmount the filesystem. If there is a process you cannot kill, reboot of the system looks like your only choice.

Hope this helps.

Regds

Re: increase logical volume

K.Vijayaragavan. — Mon, 04 Mar 2002 15:21:57 GMT

fuser -ku /usr2 to kill all the process running on this filssystem.

If you are not having online jfs then better to goto single user mode and do it.

you can either use sam or "lvextend and extendfs" combinations to acomplish the same.

-K.vijay

Re: increase logical volume

Roger Baptiste — Mon, 04 Mar 2002 16:04:49 GMT

hi,

if you have Adv JFS installed, you don't need to unmount filesystem.

Manually, you can extend the fs as

lvextend -L size /dev/vgx/lvy
SIZE=size*1024
fsadm -b SIZE /mtpoint

Otherwise, unmount the filesystem after doing
fuser -cu
fuser -cuk (to kill the processes using the filesystem. Be sure before you do this).

-raj

Re: increase logical volume

szhiyong — Mon, 04 Mar 2002 19:08:28 GMT

Hi,All,

Thanks a lot for all your help. I really appreciated it.
I just solved this problem because of these good suggestion.

Have a good day.

Zhiyong