fs type and fs entension

[silusan]

Want to increase /opt file system size from 1.5Gb to 2GB

In vgdisplay -v vg00 - I can see vg00 has many free PEs.

How do I know what filesystem type it is?

How do I know if it has online jfs?(to avoid unmounting /opt)

# uname -a
HP-UX xxxx B.11.23 U ia64 4213102252 unlimited-user license
#

# swlist|grep -i jfs
#
# swlist -l product|grep -i jfs
  JFS                   B.11.23        The Base VxFS File System
  PHKL_35242            1.0            JFS3.5 bmap performance improvement
  PHKL_38902            1.0            JFS3.5 DIO performance; extent rollback
nmlu032-uklr #

Thank you very much

[Patrick Wallek]

To see if you have Online JFS installed, run the 'vxlicrep' command.  You should get something that looks like this:

root@sg1:/ # vxlicrep

VERITAS License Manager vxlicrep utility version 3.02.006
Copyright (C) 1996-2004 VERITAS Software Corp. All Rights reserved.

Creating a report on all VERITAS products installed on this system

 -----------------***********************-----------------

   License Key                         = ########################
   Product Name                        = VERITAS File System
   License Type                        = PERMANENT
   Site License                        = YES

 Features :=
   HP_OnlineJFS                        = Enabled

Note the last line.  That means Online JFS is enabled.

To determine your filesystem type check /etc/fstab. I can almost guarantee that /opt is a VxFS filesystem.

For example:

root@sg1:/ # grep /opt /etc/fstab
/dev/vg00/lvol6 /opt vxfs delaylog 0 2

Note the 3rd column.  That is the filesystem type.

To extend your filesystem, do these steps (assuming Online JFS is enabled and that /opt is /dev/vg00/lvol6):

lvextend -L 2048 /dev/vg00/lvol6

fsadm -b 2048m /opt

You are now done.

[silusan]

Thanks. This is the o/p. It is vsfs indeed but no online JFS

# vxlicrep

VERITAS License Manager vxlicrep utility version 3.02.006
Copyright (C) 1996-2004 VERITAS Software Corp. All Rights reserved.

Creating a report on all VERITAS products installed on this system

vxlicrep ERROR V-21-3-1003 There are no valid VERITAS License keys installed in the system.
# grep /opt /etc/fstab
/dev/vg00/lvol5 /opt vxfs delaylog 0 2
/dev/vg00/lvol9 /opt/ignite vxfs delaylog 0 2
/dev/vg00/lv_ignite /var/opt/ignite vxfs delaylog,largefiles 0 2
 #

Able to ping the server...but

Server has become inaccessible after this:

 # umount /opt
umount: cannot unmount /opt : Device busy
umount: return error 1.
 # umount /opt
umount: cannot unmount /opt : Device busy
umount: return error 1.
 # fuser /opt
/opt:     6964c   11321c

 # ps -ef|grep 6964
    root 11363  6964  1 14:22:07 pts/0     0:00 ps -ef
    root  6964  6929  0 14:07:50 pts/0     0:00 -sh
    root 11364  6964  0 14:22:07 pts/0     0:00 grep 6964
 # ps -ef|grep11321
 # ps -ef|grep 11321
    root 11514  6964  0 14:22:25 pts/0     0:00 grep 11321
 # who
root       console      Sep 18 15:56
root       pts/0        Oct 31 14:07
 # fuser -ck /opt
/opt:     2290m     694t    7857mt     912mt     934m   22728co    1321m    1336m    1356m    1346m    1370m    1420mt    1413t    1586mt    1421mt    1422mt    1423mt    1426mt    1427mt    1428t    1597ct

When I try to restart putty session... the error I get is attached

[Patrick Wallek]

/opt is one of those that you should really extend from single-user mode so you are sure that no one is using.

By running the 'fuser -ck' on /opt it is possible that you killed some processes needed by the operating system.

Very rarely do I recommend using the '-k' option with fuser.

If you were using SSH to access the server, one of the processes that you killed with the 'fuser -ck' command was likely the SSH daemon.

Now your option is to try accessing the server from the console.  However, depending on the processes that were killed, that may not be an option either.  You may be forced to restart the server.

[silusan]

Yes I think you are right. may be ssh daemon is not running now because of fuser -ck

Unfortunately we cannot find its MP IP(iLO)

Making arrangements to hard reset it in our data centre.



I wonder why /opt is special...that it needs to be extended in single user mode.



Thanks

[Dennis Handly]

>I wonder why /opt is special... that it needs to be extended in single user mode.

Because as soon as the system comes up, there are several diagnostic demons that run from /opt/.

fuser(1m) will make it obvious.

[James R. Ferguson]

Hi:

In the absence of OnlineJFS you need to extent '/opt' in single user mode, as already noted so that no processes are started that require '/opt' to be mounted.  This will likely include the SSH daemon, so be prepared to work from the console.

Boot into single-user mode.  You can either use the LVM commands in '/sbin' or you can mount '/usr' to use the commands there.  When you have finished extending your '/opt' filesystem, reboot normally.   This is one simple, clean way to resume normal processing.

Regards!

...JRF...

[Patrick Wallek]

>>I wonder why /opt is special... that it needs to be extended in single user mode

It's not that /opt is special.  It is just that /opt is one of several file systems that are in use immediately after the system boots.  /var and /usr are the same, and /tmp to a lesser extent.

You could have the same situation with application file systems once the application is started.

This is why Online JFS is a must have, in my opinion, on all systems.