vmunix: Async write error (pvlink failed??)

[Jose Betancourt_1]

Hello everyone:

I'm new at this so bear with me. I'm running 11i on an L3K server. I have a series of disk that make up my vg02/lvol1 logical volume.

Yesterday, I ran pvchange -s to "temporarily" distribute some of the workload being performed on the lvol in question. Today, I had the following ugly message in my syslog.log file

vmunix: SCSI: Async write error -- dev: b 31 0x082000, errno: 22 resid: 4096

This was followed by a vxfs error message (037) (vx_metaioerr).

I tried to pvchange -s "back" to the original link, but that didn't do it. I rebooted and lucked out. However, I feel very uncomfortable not knowing what really happened and if there's something else that I could have done to avoid the reboot. I opened a call with support, but I was wondering if someone out there had experienced this before.

Jose Betancourt

[Michael Tully]

Not sure if this will help, but have a look at this link.

http://forums.itrc.hp.com/cm/QuestionAnswer/1,,0x93b614a24fd1d4118fef0090279cd0f9,00.html

[T G Manikandan]

check these documents


http://www1.itrc.hp.com/service/cki/docDisplay.do?docLocale=en_US&docId=200000062921882

http://www1.itrc.hp.com/service/cki/docDisplay.do?docLocale=en_US&docId=200000062910949

[Jose Betancourt_1]

I read the notes and I agree that we probably have some form of hardware problem (card, cable, etc.) However, the fact that the PV link did not kick in and performed a fail-over is even more worrysome.

If I do a pvchange -s (lower capital s), will it disable an alternate link fail-over in the event of a problem?

Jose Betancourt

[BFA6]

Hi,

Have a look at this link http://forums.itrc.hp.com/cm/QuestionAnswer/1,,0x828793e260b0d611abdb0090277a778c,00.html

Regards,

Hilary

[S.K. Chan]

Doing "pvchange -s .." does not guarantee it'll not switch back to its primary path especially is there are problems with the LUNs (for example "powerfailed" condition). I suggest you read this doc..
DocID=CMTKBRC00008933
http://www1.itrc.hp.com/service/cki/docDisplay.do?docLocale=en_US&docId=200000062906695
It talks about the other option you can use (ie pvchange -S..)
Hope this helps ..