Date: Mon, 5 Sep 2005 21:28:17 -0400 From: Bryan Fullerton <fehwalker@gmail.com> To: freebsd-stable@freebsd.org Subject: 6.0BETA3 - READ_DMA timeouts on UDMA33 drive? Message-ID: <35de0c30050905182851e63376@mail.gmail.com>
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Howdy, I've been tracking 6.0BETA on a P3/450 machine that's been running extremely solidly for several years. I've been cvsup'ing and rebuilding once a week or so. It's not a hugely busy machine, just has a squid cache and DNS for my home network and storage of remote backups. After an update to 6.0BETA3 as of last week I've started seeing intermittant READ_DMA timeout errors (warnings?) from a standard UDMA33 drive. I'm building BETA4 now and will see if that still has problems. Aug 31 00:55:25 katana kernel: ad0: TIMEOUT - READ_DMA retrying (1 retry left) LBA=3D33212179 Aug 31 00:58:58 katana kernel: ad0: TIMEOUT - READ_DMA retrying (1 retry left) LBA=3D18832671 Aug 31 02:21:49 katana kernel: ad0: TIMEOUT - READ_DMA retrying (1 retry left) LBA=3D12707583 Aug 31 05:55:41 katana kernel: ad0: TIMEOUT - READ_DMA retrying (1 retry left) LBA=3D30539199 Aug 31 20:24:29 katana kernel: ad0: TIMEOUT - READ_DMA retrying (1 retry left) LBA=3D2663743 Aug 31 20:55:46 katana kernel: ad0: TIMEOUT - READ_DMA retrying (1 retry left) LBA=3D17535935 Aug 31 20:58:06 katana kernel: ad0: TIMEOUT - READ_DMA retrying (1 retry left) LBA=3D1371539 Sep 1 00:48:14 katana kernel: ad0: TIMEOUT - READ_DMA retrying (1 retry left) LBA=3D17523487 Sep 1 07:26:19 katana kernel: ad0: TIMEOUT - READ_DMA retrying (1 retry left) LBA=3D75323491 Sep 1 08:19:52 katana kernel: ad0: TIMEOUT - READ_DMA retrying (1 retry left) LBA=3D9808191 ATA related items from dmesg: atapci0: <Intel PIIX4 UDMA33 controller> port 0x1f0-0x1f7,0x3f6,0x170-0x177,0x376,0xb800-0xb80f at device 4.1 on pci0 ata0: <ATA channel 0> on atapci0 ata1: <ATA channel 1> on atapci0 ad0: 39266MB <IC35L040AVER07 0 ER4OA44A> at ata0-master UDMA33 ad1: 29314MB <IBM DTLA-307030 TX4OA60A> at ata0-slave UDMA33 acd0: CDRW <YAMAHA CRW2100E/1.0H> at ata1-master PIO4 Any ideas what's up with that? Are these errors or warnings? Is this something that's always been happening but wasn't being reported before, or something being erroneously reported? smartmontools reports that ad0 has zero SMART errors or failures, so it doesn't appear to be an issue with the drive itself. A short SMART test also passes with no errors. Thanks, Bryan
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