Date: Mon, 22 Nov 2004 21:40:51 -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: <20041123034051.GA48882@dan.emsphone.com> In-Reply-To: <41A2C86E.2090401@confabulator.net> References: <41A2A7B2.4000601@confabulator.net> <20041123030351.GA31803@dan.emsphone.com> <41A2C86E.2090401@confabulator.net>
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In the last episode (Nov 22), Ryan J. Cavicchioni said: (top-posting fixed) > Dan Nelson wrote: > >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). > > Would the excesive FTP load cause this? I was downloading mp3's over > LAN so I was getting 7 mbit speed. Would this cause the disks to do > this? No; chances are there's just a bad spot on your disk that wasn't touched before. The block number (the info: number) shouldn't change (or if it's a large bad spot, it may vary by a digit or two). -- Dan Nelson dnelson@allantgroup.com
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