Date: Sun, 05 Jun 2005 22:55:02 +1100 From: Andrew MacIntyre <andymac@bullseye.apana.org.au> To: Tony Byrne <freebsd@byrnehq.com> Cc: FreeBSD Stable <freebsd-stable@freebsd.org>, Tony Byrne <freebsd-current@byrnehq.com> Subject: Re: ATA DMA timeouts Message-ID: <42A2E816.7060209@bullseye.apana.org.au> In-Reply-To: <1436791778.20050602094855@byrnehq.com> References: <1117573047.3095.24.camel@klotz.local> <1684114034.20050601135752@byrnehq.com> <1117645070.1846.8.camel@klotz.local> <1148797372.20050601182156@byrnehq.com> <1436791778.20050602094855@byrnehq.com>
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Tony Byrne wrote:
> Martin,
>
> TB> We're now at 2 hours uptime and there is no sign of the ATA
> TB> timeouts. With the newer kernels the first timeout would appear
> TB> within 5 to 10 minutes of rebooting. I can't see any changes to
> TB> the ATA code in the interim so I'm curious as to what could have
> TB> caused this issue.
>
> TB> My hardware is Intel ICH5 based with a Western Digital SATA hard-disk.
>
> Well it was too good to last. I came in this morning to find a handful
> of "ad0: TIMEOUT - ..." in the messages file. It looks like the
> nightly cron jobs trigger it even for kernel and world prior to May
> 9th. I get the sense that there are less timeouts with the older
> kernel, but it could be wishful thinking. If your timeouts have really
> gone away then it's possible that our problem has a different cause to
> yours.
>
> Can anyone else shed some light on this issue?
I've just been through something like this, eventually traced to one
rail (+5V) on the power supply sagging out of tolerance.
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Andrew I MacIntyre "These thoughts are mine alone..."
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