Date: Tue, 28 Nov 2000 20:17:36 +0100 (CET) From: Soren Schmidt <sos@freebsd.dk> To: webmaster@healthnet-sl.es (Carlos Amengual) Cc: freebsd-bugs@FreeBSD.ORG Subject: Re: kern/22086: DMA errors during intensive disk activity on vinum volume Message-ID: <200011281917.UAA00377@freebsd.dk> In-Reply-To: <200011281800.eASI03i24567@freefall.freebsd.org> from Carlos Amengual at "Nov 28, 2000 10:00:03 am"
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It seems Carlos Amengual wrote: > The following reply was made to PR kern/22086; it has been noted by GNATS. > > From: Carlos Amengual <webmaster@healthnet-sl.es> > To: freebsd-gnats-submit@FreeBSD.org, rasmith@aristotle.tamu.edu > Cc: > Subject: Re: kern/22086: DMA errors during intensive disk activity on vinum > volume > Date: Tue, 28 Nov 2000 18:52:43 +0100 > > I found the same problem on a 4.2-RELEASE system: > > Vinum configuration: > > drive idea device /dev/ad0s1e > drive ideb device /dev/ad2s1f > drive idec device /dev/ad4s1f > volume raid5a > plex org raid5 512k > sd length 0 drive idea > sd length 0 drive ideb > sd length 0 drive idec > > The error messages: > > Nov 27 22:24:43 vega /kernel: ata0-master: zero length DMA transfer > attempted > Nov 27 22:25:06 vega /kernel: ad0: WRITE command timeout tag=0 serv=0 - > resetting > Nov 27 22:25:06 vega /kernel: ata0: resetting devices .. done > Nov 27 22:25:06 vega /kernel: ata0-master: zero length DMA transfer > attempted > Nov 27 22:25:06 vega /kernel: ad0: WRITE command timeout tag=0 serv=0 - > resetting > Nov 27 22:25:06 vega /kernel: ata0: resetting devices .. done This is an old problem with vinum, somehow vinum manage to trash the ad_request struct between where the ata drives makes it in ad_strategy and when it actually gets used later.. I thought this was fixed at least in -current long ago, but apparently this was either not backported to -stable or the fix was not good enough. I'm sure Greg will tell you its an ATA problem though :) -Søren To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-bugs" in the body of the message
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