Date: Mon, 22 Nov 2004 21:03:51 -0600 From: Dan Nelson <dnelson@allantgroup.com> To: "Ryan J. Cavicchioni" <ryan@confabulator.net> Cc: freebsd-questions@freebsd.org Subject: Re: SCSI Hard drive "MEDIUM ERROR" Message-ID: <20041123030351.GA31803@dan.emsphone.com> In-Reply-To: <41A2A7B2.4000601@confabulator.net> References: <41A2A7B2.4000601@confabulator.net>
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In the last episode (Nov 22), Ryan J. Cavicchioni said: > What would this mean? I get it during heavy FTP transfers on a drive > that is 75% full. > > (da1:ahc0:0:8:0): MEDIUM ERROR info:381b12 csi:ff,ff,ff,ff asc:11,1 > (da1:ahc0:0:8:0): Read retries exhausted actual retry count: 104 > (da1:ahc0:0:8:0): Retrying Command (per Sense Data) > (da1:ahc0:0:8:0): READ(10). CDB: 28 0 0 38 1a a0 0 0 80 0 > (da1:ahc0:0:8:0): CAM Status: SCSI Status Error > (da1:ahc0:0:8:0): SCSI Status: Check Condition A medium error is a physical media error. The drive tried reading a sector 104 times and couldn't recover the data. If you have AWRE enabled, writing to that disk block should cause the drive to mark it bad and use a spare sector. "camcontrol modepage da1 -m 1 -e -P 3" will let you turn it on. Enabling ARRE is a good idea too (if the drive detects a bad sector but recovered it, it will reallocate the block). -- Dan Nelson dnelson@allantgroup.com
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