topic Re: VG00 Disk Stale in Operating System - HP-UX

VG00 Disk Stale

Chad Brindley — Fri, 18 Nov 2005 04:56:45 GMT

Hi,

HPUX 11:23 running on Itanium 2 Servers.

I am not an expert in this field but we had an engineer replace one of our 73gb internal mirrored disks. He followed his cookbook but when we come to re-boot the disk replaced comes up stale even after re-mirroring before re-boot. The disks are fine and report no errors.

Has anyone experienced anything like this before?

The HP engineer thinks it may be something to do with an lvm patch problem or something.

Any help would be appreciated.

Regards,

Chad Brindley

Re: VG00 Disk Stale

RAC_1 — Fri, 18 Nov 2005 05:10:04 GMT

Can you boot from alternate boot disk??
Also did you try lvsplit and lvmerge on the lv, where you have stale extents??

Re: VG00 Disk Stale

Chad Brindley — Fri, 18 Nov 2005 05:25:21 GMT

Yes we can boot from the alternate disk but it still shows as stale, the alternate disk boots without quorum (-lq) which was the only thing we noticed.

The engineer just ran a vgsync vg00, he did not do an lvmerge or the other lv command you suggested.

What do these commands do?

Regards,

Chad

Re: VG00 Disk Stale

Lee Harris_5 — Fri, 18 Nov 2005 05:26:01 GMT

If the disks are properly mirrored a simple vgsync vg00 should have done the trick - has that been done yet? Did the engineer restore the lvm structures to the disk after replacing it?

Re: VG00 Disk Stale

Chad Brindley — Fri, 18 Nov 2005 05:29:08 GMT

he did the vgsync and I believe he sorted the lvm structures also. I will need to confirm with him his steps but was just looking for idea's today. I wont be able to speak to him until next week.

Thanks for your advice.

Chad

Re: VG00 Disk Stale

Robert-Jan Goossens — Fri, 18 Nov 2005 05:32:39 GMT

Chad,

Check the steps the engineer followed with this doc.

Title: Replace failed root and non-root LVM disks on Itanium.
Document ID: KBRC00014036

Europe
http://www5.itrc.hp.com/service/cki/docDisplay.do?docLocale=en_US&docId=200000079971585

US
http://www2.itrc.hp.com/service/cki/docDisplay.do?docLocale=en_US&docId=200000079971585

Regards,
Robert-Jan

Re: VG00 Disk Stale

Chad Brindley — Fri, 18 Nov 2005 05:38:10 GMT

Hi Robert,

Just looking through the document and it looks exactly what the engineer has done. It seems to be the same extract as what was in his cookbook. I will verify with the engineer though.

Regards,

Chad

Re: VG00 Disk Stale

Steven E. Protter — Fri, 18 Nov 2005 06:48:48 GMT

Okay,

if the original boot disk is okay, you may have to vgreduce -f /dev/dsk/c1t1d0 (bad disk) and follow the instructions for recovering and then adding the disk back in and re-mirroring.

If you are running on the alternate disk vgreduce -f might help, but you need to be sure what disk you booted off of before taking this step.

The command above is dangerous, but is useful in short running in circles unable to get out.

SEP

Re: VG00 Disk Stale

Robert-Jan Goossens — Fri, 18 Nov 2005 07:36:06 GMT

Hi Chad,

Just a tought, could the disk be a DOA ?

# dd if=/dev/rdsk/cxtydz of=/dev/null bs=1024k

Robert-Jan