[dm-devel] multipath-tools-0.4.4 on 3par unknown path failure issue
Andy
genanr at emsphone.com
Fri Aug 12 16:04:07 UTC 2005
On Thu, Aug 11, 2005 at 04:19:24PM -0400, Alan Kasindorf wrote:
>
> >I've had problems like this happen to me on 3par too. What kernel version
>
> However, I'd like to know what the exact issue is. I'm not exactly great
> on eliciting issues with the linux kernel right now. How were you
> monitoring what events the SAN was sending up through the card? I could
> use this to at least verify what is happening if/when we lose another
> mount. None of our servers were being rebooted when this happened though.
>
My issue was that I was getting I/O errors when other systems were rebooted
(and occasionally other times, reboots consistently would cause a problem),
and those I/O errors would cause the mount to drop. Somehow I got the idea
that turning off failfast might help and it did. I have not monitored what
events the SAN was sending the card, all I did was turn on debugging in the
qla2xxx drivers and ask Andrew Vasquez (qlogic developer) about them.
Andy
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