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From: "Daniel Eriksson" <daniel_k_eriksson@telia.com>
To: =?iso-8859-1?Q?'S=F8ren_Schmidt'?= <sos@DeepCore.dk>
Date: Sun, 8 Aug 2004 23:05:10 +0200
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cc: freebsd-current@freebsd.org
cc: 'Ville-Pertti Keinonen' <will+freebsd-current@will.iki.fi>
Subject: RE: ATA driver races with interrupts
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I wrote:

> Unfortunately the machine disconnected one of the SATA discs=20
> earlier today. It did so out-of-the-blue, because there was
> no activity at all on either of the two discs other than the
> SMART monitor.
>=20
> Aug  5 11:45:47 fortify kernel: ad20: WARNING - removed from=20
> configuration
> Aug  5 11:45:47 fortify kernel: ata10-master: FAILURE -=20
> unknown CMD (0xb0)
> timed out
> Aug  5 11:45:47 fortify smartd[882]: Device: /dev/ad20, not=20
> capable of SMART
> self-check
[...]
> I have switched back to the patch from Ville-Pertti that
> serializes the controller for now, to see if that is more
> stable.

After 3+ days of uptime, including continuous SMART monitoring (which
without patch triggers an immediate disconnect, and with S=F6rens patch
triggered a disconnect after ~16 hours) and a fair amount of disc =
activity
on both channels it looks like maybe the serialization patch from
Ville-Pertti is enough to make my SATA controller work properly. Of =
course,
it also slows things down, but right now that is better than the
alternative.

S=F6ren, if you have any other patches you would like me to test just =
let me
know.

/Daniel Eriksson