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

extend logical volume

G.Anand — Tue, 27 Jul 2004 06:22:53 GMT

Hi,

I am new to hp unix. I need to extend /opt file system to 1600 MB now in 800 MB. let me know i can extend lv through SAM without single user mode.

Re: extend logical volume

Pete Randall — Tue, 27 Jul 2004 06:25:08 GMT

The issue you're going to face is that /opt needs to be unmounted in order to extend it. Unmounting such a busy file system is nearly impossible. That's why the easiest way is to go to single user mode.

Pete

Re: extend logical volume

Bharat Katkar — Tue, 27 Jul 2004 06:31:28 GMT

Hi,
Have a look at the link below. That will guide you properly.

http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=51908

Regards,

Re: extend logical volume

G.Anand — Tue, 27 Jul 2004 06:33:27 GMT

hi,

then my option is boot through single user mode then lvextend, umount the file system and extendvs. is it correct?

Re: extend logical volume

Pete Randall — Tue, 27 Jul 2004 06:36:45 GMT

That's right - in single user mode, run lvextend, then unmount and run extendfs. There's an example in the lvextend man page.

Pete

Re: extend logical volume

Thayanidhi — Tue, 27 Jul 2004 07:15:51 GMT

If you have Online JFS, and /opt is vxfs, then yes.

Post your swlist,bdf, vgdisplay -v

TT

Re: extend logical volume

Cheryl Griffin — Tue, 27 Jul 2004 07:18:16 GMT

If you have OnlineJFS installed then you do not need to unmount the filesystem in order to extend it.

http://www.docs.hp.com/hpux/onlinedocs/B2355-90672/00/00/48-con.html (see lvextend, fsadm)

Re: extend logical volume

RAJESH GANGADHARAN — Tue, 27 Jul 2004 08:04:39 GMT

Check whether you got Online JFS by
swlist -l product |grep Online

If you got Online JFS
extend the LV using lvextend and extend filesystem using fsadm.

Re: extend logical volume

Kyri Pilavakis — Wed, 28 Jul 2004 01:10:51 GMT

Online JFS... Luxury for some of us!!!
Please see attached file which I hope will help.

Re: extend logical volume

Petr Simik_1 — Wed, 28 Jul 2004 08:34:09 GMT

1.check where is /opt mountd
#bdf /opt
-> %/dev/vg01/lvol3 /opt

2.kill users using this volume group
#fuser -ku /dev/vg01/lvol3

4. Increase the size of a file system existing on a logical volume.
First, increase the size of the logical volume.
#lvextend -L 1600 /dev/vg01/lvol3
Unmount the file system.
#umount /dev/vg01/lvol3
Extend the file system to occupy the entire (larger) logical volume.
#extendfs /dev/vg01/rlvol3
Remount the file system.
#mount /dev/vg01/lvol3 /opt

Re: extend logical volume

Jerry Zhang — Wed, 28 Jul 2004 09:16:17 GMT

First, you need Online JFS, which is part of Enterprise Operating Environment, or a separate product if you have regular HPUX 11i Operating Environment.

$ swlist |grep HPUX11i

will tell you that.

Second, you have to have enough PE in the volume group. To find out, type

$ vgdisplay -v vg00 |more

Find Free PE. Default size for a PE is 4MB. If there is no enough free PE, then you need to add more disk or LUN into vg00.

If you have both (Online JFS and free PE), you can expand /opt online by

# lvextend -L 1600 /dev/vg00/lvolxxx
# fsadm -F vxfs -b 1600000 /opt

where -b is in block of KB (not MB).

Good luck

- Jerry