Date: Sun, 01 Oct 2006 23:57:45 -0700 From: Rich Wales <richw@richw.org> To: freebsd-stable@freebsd.org Subject: Promise SATA timeout problems (PR 103435) Message-ID: <20061002065745.936D33C36B@whodunit.richw.org>
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I'm experiencing a problem that seems to be the one reported in: http://www.freebsd.org/cgi/query-pr.cgi?pr=103435&cat=i386 I've got a Promise SATA300 TX4 card (note, this is =not= a RAID card) and two Seagate 300GB SATA drives, in an old (800-MHz original "Slot A" Athlon) experimental box currently running 6.1-RELEASE-p9. If I generate a heavy I/O load on the disks, I start getting a bunch of timeout messages -- various "taskqueue timeout"s, READ_DMA and READ_DMA48 retries, and even an occasional UDMA ICRC error. I can produce this stuff pretty reliably by starting up two "dd" commands -- copying each drive to /dev/null -- and running them concurrently. As best I can tell from searching on the net, this problem has been around for quite some time, in both FreeBSD and Linux systems, and no one seems to have managed to figure out what's causing it. Needless to say, I'd love to see a fix. Any ideas? Rich Wales Palo Alto, CA, USA richw@richw.org http://www.richw.org
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