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Date: Thu, 9 Sep 2010 07:16:48 -0700
From: Jeremy Chadwick <freebsd@jdc.parodius.com>
To: Ivan Voras <ivoras@freebsd.org>
Message-ID: <20100909141648.GA77376@icarus.home.lan>
References: <20100909140000.5744370gkyqv4eo0@webmail2.ukgrid.net>
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Cc: freebsd-fs@freebsd.org
Subject: Re: ZFS related kernel panic
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On Thu, Sep 09, 2010 at 04:12:18PM +0200, Ivan Voras wrote:
> On 09/09/10 15:00, a.smith@ukgrid.net wrote:
> >Hi,
> >
> >I am experiencing kernel panics when running a zfs receive. And
> 
> Others will comment more, but...
> 
> >siisch0: Timeout on slot 23
> >siisch0: siis_timeout is 00040000 ss 7fffffff rs 7fffffff es 00000000
> >sts 801d20
> >siisch0 ..waiting for slots 7f7fffff
> >
> >Fatal trap 12: page fault while in kernel mode
> 
> >current proecess = 12 (irq256: siis0)
> 
> ... this looks like a hardware error.
> 
> Are you using AHCI here? Try turning it off.

This is a siis(4) card -- chances are he can't turn it off.  :-)  We
really need a backtrace to see what transpired.

The siis(4) driver may have crashed as a result of LUN timeouts.  The
driver shouldn't panic, I agree, but the port timing out is of major
concern.  I imagine this behaviour (the crash) could be reproduced even
if UFS2 was used and the timeout took place.

-- 
| Jeremy Chadwick                                   jdc@parodius.com |
| Parodius Networking                       http://www.parodius.com/ |
| UNIX Systems Administrator                  Mountain View, CA, USA |
| Making life hard for others since 1977.              PGP: 4BD6C0CB |