topic Re: Lvextend without Extendfs in Operating System - HP-UX

Lvextend without Extendfs

Bob Ferro — Mon, 03 Aug 2009 11:03:58 GMT

I need to clarify something. On Unix Server A (11.23) using SAM, I extend a logical volume while a script was running because the FS was becoming full. I continued to extend just the LV and when I did a BDF, the size was changing on the FS. I noticed on another FS, that it was 100% full(12GB) but when I used SAM to extend that LV upto 25GB, the FS still shows 12GB. This is the same server. I didn't have to use extendfs on the first FS. What can cause this?

Re: Lvextend without Extendfs

Mel Burslan — Mon, 03 Aug 2009 11:11:51 GMT

It is very hard to tell from the information you have provided. But in order to increase the filesystem size with fsa, you will need some room available. I think 99% full filesystem will do. B, filesystems full to the brim, will refuse to resize to a larger value. Since you are using SAM and not seeing any output or not provided here, it is hard to tell. Try moving a large file from this filesystem to another, temporaryly and try your filesystem extension. See if it works, if not, provide more details here. If it works you can move your file back to where it originally was.

Hope this hepls

Re: Lvextend without Extendfs

Lijeesh N G_1 — Mon, 03 Aug 2009 11:21:13 GMT

Hi,

I think due to the usage of the volume;100%.

Remove some unwanted files from that volume or move to some other volumes and then try to do the extend.

Regards,
LIJEESH N G

Re: Lvextend without Extendfs

Bob Ferro — Mon, 03 Aug 2009 12:06:21 GMT

Currently, that FS shows 77% full at 12GB but the LV shows 25GB. I guess my question is why did the first LV increase change the FS too, I didn't have to extend the FS. Is that the way it's supposed to work? Or do you have to do a extendfs?

Re: Lvextend without Extendfs

Roopesh Francis_1 — Mon, 03 Aug 2009 12:17:44 GMT

can you post lvdisplay and bdf output of the file system which you need to extend.
if lvdisplay shows 25Gb and bdf shows 12Gb ,you may user fsadm to extend the file systems
#fsadm -F vxfs -b 25850M

Thanks,

Re: Lvextend without Extendfs

Bob Ferro — Mon, 03 Aug 2009 12:19:04 GMT

--- Logical volumes ---
LV Name /dev/vgx4/lvol5
VG Name /dev/vgx4
LV Permission read/write
LV Status available/syncd
Mirror copies 0
Consistency Recovery MWC
Schedule parallel
LV Size (Mbytes) 25000
Current LE 3125
Allocated PE 3125
Stripes 0
Stripe Size (Kbytes) 0
Bad block on
Allocation strict
IO Timeout (Seconds) default

Filesystem kbytes used avail %used Mounted on
/dev/vgx4/lvol5 12288000 9344691 2759353 77% /medapps

Re: Lvextend without Extendfs

Roopesh Francis_1 — Mon, 03 Aug 2009 12:23:33 GMT

use
fsadm -F vxfs -b 25000M /medapps
to extend the filesystem

Re: Lvextend without Extendfs

Steven E. Protter — Mon, 03 Aug 2009 12:24:35 GMT

Shalom,

frans command requires Online JFS to run.

extendfs requires a umount prior to the command succeeding.

SEP

Re: Lvextend without Extendfs

Bob Ferro — Mon, 03 Aug 2009 12:25:20 GMT

I will but I didn't have to do anything to the other FS to extend it. When you use SAM to extend an LV, does it automatically extend the FS? If so, is that because OnlineJFS is installed?

Re: Lvextend without Extendfs

Lijeesh N G_1 — Mon, 03 Aug 2009 12:52:50 GMT

Hi,

==>When you use SAM to extend an LV,
does it automatically extend the FS?
Yes, It will extend FS as well if OnlineJFS is installed on your system.

Regards,
LIJEESH N G

Re: Lvextend without Extendfs

Bob Ferro — Mon, 03 Aug 2009 12:56:23 GMT

Then I guess if the FS is 100% full, then the extendfs fails.

Re: Lvextend without Extendfs

Roopesh Francis_1 — Mon, 03 Aug 2009 13:22:24 GMT

yes..that could be the reason!!

Re: Lvextend without Extendfs

Lijeesh N G_1 — Mon, 03 Aug 2009 13:33:48 GMT

Hi,

==>Then I guess if the FS is 100% full, then the extendfs fails.??

If file system is full (100%), extendfs will fail with SAM and it will give a error.

In that situation you may use,

1)If online JFS installed (From above details I could tell it is installed)

#fsadm -F vxfs -b

2)If online JFS not installed
#umount
#extendfs -F vxfs
#mount

Regards,
LIJEESH N G

Re: Lvextend without Extendfs

Lijeesh N G_1 — Mon, 03 Aug 2009 13:48:57 GMT

Hi,

You may check sam logs for more details,

SAM log ==> /var/sam/log/samlog

use samlog_viewer for viewing the contents,

#/usr/sam/bin/samlog_viewer

Regards,
LIJEESH N G

Re: Lvextend without Extendfs

Bob Ferro — Mon, 03 Aug 2009 14:19:05 GMT

Like always, the guys on this forum come through.