Date: Sun, 21 Dec 2003 23:25:23 -0500 From: Lee Cremeans <lee@lcremeans.homeip.net> To: "Oivind H. Danielsen" <oivind.danielsen@kopek.net> Cc: freebsd-stable@freebsd.org Subject: Re: WRITE command timeout Message-ID: <3FE67233.7050701@lcremeans.homeip.net> In-Reply-To: <NMEPLAHDNAPMGKOIJMLLIEFNCAAA.oivind.danielsen@kopek.net> References: <NMEPLAHDNAPMGKOIJMLLIEFNCAAA.oivind.danielsen@kopek.net>
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Oivind H. Danielsen wrote: > Hello. > > We have been running FreeBSD 4.6-5.1 systems for 1.5 years and are being > plagued by these: > > Dec 18 15:15:39 <> /kernel: ad0: WRITE command timeout tag=0 serv=0 - > resetting > Dec 19 15:03:23 <> /kernel: ad0: READ command timeout tag=0 serv=0 - > resetting > > > In our rack we have 34 identical drives (IBM IC35L080AVVA07). > > 24 drives on Windows 2000 : no problems. > 4 drives on Linux 2.4.x : no problems. > > 2 drives on RELENG_4_8 > (VIA 82C686, VIA C3) : no problems > > 4 drives on RELENG_4_8 > (nVIDIA nForce, XP 2000+) : r/w timeouts, fs corruption. > > (1 drive/system, 6 FreeBSD boxes) > > The good systems have been running the 1.5 years without a hitch. The > four identical RELENG_4_8 systems have all had corrupted filesystems (at > least once every two months). > > > We have tried the following: > > - Changed ATA100 cables (3 diff. types, all 80-wire) > - Disabled DMA (use PIO4) (hw.ata.ata_dma="0" in loader.conf) > - Disabled DMA in BIOS setup > - Changed motherboard (MSI MS6734, VIA KM400, vt8235 ATA) > - Changed power supply (added 100W) > - RELENG_5_1. > > None of these changes has helped. The only change seen when disabling > DMA is additional messages: "timeout waiting for DRQ - resetting". It sounds like that particular drive is on the way out. Have you tried running IBM/HGST's "Drive Fitness Tools" disk on it? (It's a DOS program, but it comes on a self-booting diskette image that you can also burn to a bootable CD if you like.) That program should be able to detect any problems, and let you know if you need to send the drive back. -lee
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