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Date: Fri, 25 Sep 2009 03:20:31 -0500
From: "James R. Van Artsdalen" <james-freebsd-current@jrv.org>
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To: Pegasus Mc Cleaft <ken@mthelicon.com>
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Cc: Alexander Motin <mav@freebsd.org>,
	FreeBSD Current <freebsd-current@freebsd.org>
Subject: Re: SIIS timeout with current r197392:
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Pegasus Mc Cleaft wrote:
> Hello Current, 
>
> 	Since my latest build of amd64-current kernel and world (r197392) I am 
> getting strange timeout errors in my dmesg and eventual system instability. 

I believe mav has stated that error handling in SIIS isn't finished or
is problematic in some way.

I see similar problems: most of the time an error results in a hung
device, requiring reboot.  This usually happens within a TB or two or
intense I/O: I have not yet seen a 6 TB ZFS pool complete a "scrub" due
to this.