Date: Thu, 03 Nov 2005 20:29:27 +0000 From: jcr <jcr@canuck.co.uk> To: freebsd-stable@freebsd.org Subject: Re: DMA errors Message-ID: <436A7327.6080901@canuck.co.uk> In-Reply-To: <436A6904.6050207@math.missouri.edu> References: <436A6904.6050207@math.missouri.edu>
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Stephen Montgomery-Smith wrote: > I found these messages on my computer, which is running a very recent > RELENG_5. Is this bad? Does it indicate that the disk is failing? > > Nov 3 07:35:48 cauchy kernel: ad4: FAILURE - READ_DMA > status=51<READY,DSC,ERROR> error=40<UNCORRECTABLE> LBA=145908831 > Nov 3 07:35:51 cauchy kernel: ad4: FAILURE - READ_DMA > status=51<READY,DSC,ERROR> error=40<UNCORRECTABLE> LBA=145908863 > Nov 3 07:35:55 cauchy kernel: ad4: FAILURE - READ_DMA > status=51<READY,DSC,ERROR> error=40<UNCORRECTABLE> LBA=145908895 > Nov 3 07:35:59 cauchy kernel: ad4: FAILURE - READ_DMA > status=51<READY,DSC,ERROR> error=40<UNCORRECTABLE> LBA=145908895 > It could be a problem with the disk, the cable, or possibly software. Try smartctl -a /dev/ad4 as root to find out if the errors were recorded by the drive. Now is a good time to do a backup, just in case :) -- </jcr>
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