amd64/149713: Kernel crashes on HD timeout
Alexander Motin
mav at FreeBSD.org
Mon Aug 16 21:20:03 UTC 2010
The following reply was made to PR amd64/149713; it has been noted by GNATS.
From: Alexander Motin <mav at FreeBSD.org>
To: bug-followup at FreeBSD.org, paul at swarmtv.nl
Cc:
Subject: Re: amd64/149713: Kernel crashes on HD timeout
Date: Tue, 17 Aug 2010 00:11:00 +0300
I think there is two reasons:
1. Too low request timeout value triggers error too early. Increasing
timeout should make it less frequent. It was already done in 7-STABLE
branch and above.
2. After timeout triggered, panic probably caused by weak locking in
ata(4). You may try to upgrade your system, hoping situation was
improved. But I would recommend you to upgrade to 8.1 and build kernel
with ATA_CAM option, replacing old ata(4) infrastructure with new and
probably more reliable one.
--
Alexander Motin
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