Date: Wed, 12 Jan 2011 23:29:53 +0100 From: Joachim Tingvold <joachim@tingvold.com> To: Alexander Motin <mav@freebsd.org> Cc: freebsd-scsi@FreeBSD.org Subject: Re: mps0-troubles Message-ID: <B2CFC8A1-FA1D-4718-99C3-AC3430A905C2@tingvold.com> In-Reply-To: <4D2DAA45.30602@FreeBSD.org> References: <mailpost.1294832739.2809102.16331.mailing.freebsd.scsi@FreeBSD.cs.nctu.edu.tw> <4D2DAA45.30602@FreeBSD.org>
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On Wed, Jan 12, 2011, at 14:19:01PM GMT+01:00, Alexander Motin wrote: > dmesg you've shown shown many command timeouts on multiple devices. As > soon as default ATA timeout is about 30 seconds - it may cause > significant delays before recovery sequence will manage it. That could > result in delays you observed. I let the computer stay on for about 7-8 hours after I sent my previous email, and it was still frozen. I had to physically reset the computer to get it operational again. > What's more suspicious is that timeouts happened same time on > AHCI-attached disk and several disks on mps controller. I can hardly > assume that two completely different controllers and drivers triggered > some unrelated problems simultaneously. If I were copying from the AHCI-attached disk to the mps controller, and the AHCI-attached disk timeouts, wouldn't this cause the disks on the mps controller to timeout as well? -- Joachim
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