From owner-freebsd-current@FreeBSD.ORG  Tue Feb 17 19:09:42 2004
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Date: Tue, 17 Feb 2004 22:09:41 -0500 (EST)
From: "Jason M. Leonard" <fuzz@ldc.upenn.edu>
To: Scott Long <scottl@freebsd.org>
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cc: freebsd-current@freebsd.org
cc: Raphael.Becker@gmx.de
Subject: Re: kernel panic after 5.2 RELEASE --> 5.2.1, DELL PE2650, SCSI
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On Tue, 17 Feb 2004, Scott Long wrote:

> Lachlan O'Dea wrote:
> > -----BEGIN PGP SIGNED MESSAGE-----
> > Hash: SHA1
> >
> > On 18 Feb 2004, at 10:41, Scott Long wrote:
> >
> >> Jason M. Leonard wrote:
> >>
> >>> Without seeing the actual SCSI errors it is hard to say, but I was
> >>> experiencing a very similar issue with my PE2650.  Disabling write
> >>> caching
> >>> on the RAID 1 container cleared it up.  I do not know if that is the
> >>> best
> >>> way to go about it, but this server had to be in production pronto, so I
> >>> was happy.
> >>> :Fuzz
> >>
> >>
> >> If there is any way that you could send me the errors that you were
> >> getting, I would appreciate it.

I was seeing the same "aac0: command 0xXXXXXX timeout" error as below.

> >
> > Hi Scott,
> >
> > This may be completely unrelated, but I just went from 5.2-RELEASE to
> > 5.2.1-RC2. After a while started seeing lots of these on the console:
> >
> > aac0: command 0xXXXXXX timeout after 8597 seconds
>
> As was mentioned, changing /sys/dev/aac/aacvar.h:AAC_MAX_FIBS from 512
> to 504 will work around this problem.  I'll commit this to RELENG_5_2 in
> a minute.

Thanks!


:Fuzz