Best way to add space to /OPT

[Rita D'Elia_1]

What is the best process to add disk space to /OPT? I tried SAM but was not successful.
Thanks! I'm rather new to HP-UX and appreciate any and all suggestions.

[Mel Burslan]

if sam is not able to add this space, it means that you may have a problem with either insufficient disk space or maybe unbalanced mirroring or many other things.

It would help if you can tell us what kind of error message you got back from sam.

[Rita D'Elia_1]

The message is that the filesystem is still mounted. I was able to add space to the /u05 filesystem using SAM, but not /OPT. Any idea why SAM did not unmount OPT?

[Pete Randall]

The reason you were unable to extend with SAM is because the file system needs to be unmounted in order to run the extendfs. The easiest way, unless, of course, you have OnlineJFS, is to boot into single user mode. Your file systems will be unmounted. I usually do a "mount -a" so that all my commands, utilities, etc are available to me, and then do a "umount /opt". You can then go into SAM and extend /opt.


Pete

[Geoff Wild · Accepted solution]

Because it was busy....

If you don't have online jfs - then you need to un mount it.

fuser -cu /opt

will tell you all the processes that have /opt locked.

do a
ps -ef |grep PID
to see what they are...

You will probably need to shut some stuff down...

Check output of:

vxlicense -p

and

/sbin/fs/vxfs/vxenablef

to see if you have online jfs...

Rgds...Geoff

[James R. Ferguson]

Hi Rita:

If you were unable to increase the size of the '/opt' filesystem, I would guess that either you don't have enough free physical disk extents to enlarge the underlying logical volume; or that the filesystem must be unmounted to enlarge it.

As already mentioned, please post any error messages.

Regards!

...JRF...

[Rita D'Elia_1]

I ran the "ps" and "fuser" commands and got the output below. If I'm not mistaken, I should be able to turn these all off?
#fuser -cu /opt
/opt: 1133mt(root) 1204mt(root) 2998mto(root) 1408mto(root) 134)

root@labsvr.crmchealth.org[/]
#ps -ef | grep 1133
root 1133 1 0 Feb 18 ? 0:14 /opt/dce/sbin/rpcd
root 19604 19561 1 12:41:31 pts/ta 0:00 grep 1133
root@labsvr.crmchealth.org[/]
#ps -ef | grep 1204
root 1204 1 0 Feb 18 ? 1:44 scrdaemon
root 19877 19561 0 12:41:46 pts/ta 0:00 grep 1204
root@labsvr.crmchealth.org[/]
#ps -ef | grep 2998
root 2998 1389 0 Feb 18 ? 0:17 /opt/perf/bin/agdbserver -t ala/
root 2999 2998 0 Feb 18 ? 0:37 /opt/perf/bin/alarmgen -svr 299a
root 19879 19561 1 12:41:56 pts/ta 0:00 grep 2998
root@labsvr.crmchealth.org[/]
#ps -ef | grep 1408
root 1408 1 0 Feb 18 ? 7:24 /opt/perf/bin/scopeux
root 19882 19561 1 12:42:15 pts/ta 0:00 grep 1408

[Geoff Wild]

scopeux

Can stop with

/sbin/init.d/mwa stop

That should stop agdbserver and alarmgen as well...

For rpcd:

/sbin/init.d/Rpcd stop

For scrdaemon:

/sbin/init.d/scrdaemon stop

Then try to extend, then start those up.

Rgds...Geoff

[Pete Randall]

While these daemons most likely can be turned off individually, I maintain that it is far simpler to reboot into single user mode. Even if you get all the daemons stopped, you still may not be able to unmount!


Pete

[AshishJain_USA]

Hi Rita

/opt will have lots of runing stuff in an online systems. so,the best way ( in the absence of online JFS ) is to

1. boot the system in single user mode
2. vgchange -a y /dev/vg00
3. mount /usr

Once u are done with this, u can do lvextend and extendfs to increse the space.

rgds...Ashish

[Rita D'Elia_1]

I am closing this thread as it seems that I will need to boot to single user mode as suggested in this thread in order to expand the space. Thanks for all the input!