From owner-freebsd-stable Thu Sep 20 9: 0:55 2001 Delivered-To: freebsd-stable@freebsd.org Received: from steeltoe.niceboots.com (steeltoe.niceboots.com [208.25.85.157]) by hub.freebsd.org (Postfix) with ESMTP id B893D37B40A for ; Thu, 20 Sep 2001 09:00:50 -0700 (PDT) Received: from localhost (tenebrae@localhost) by steeltoe.niceboots.com (8.11.3/8.11.0) with ESMTP id f8KG0oI81828 for ; Thu, 20 Sep 2001 09:00:50 -0700 (PDT) Date: Thu, 20 Sep 2001 09:00:50 -0700 (PDT) From: Tenebrae Reply-To: tenebrae_BSD@niceboots.com To: freebsd-stable@freebsd.org Subject: ad0: WRITE command timeout Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-stable@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG I found a couple messages in the freebsd-stable archives about this error, but no real resolution... I'm using freeBSD 4.3-STABLE (uname -a below). FreeBSD steeltoe.niceboots.com 4.3-STABLE FreeBSD 4.3-STABLE #0: Thu May 17 22:58:45 PDT 2001 root@steeltoe.niceboots.com:/usr/src/sys/compile/GENERIC i386 I occasionally get a dmesg that says: ad0: WRITE command timeout tag=0 serv=0 - resetting ata0: resetting devices .. done I'm not sure what's causing it. One of the messages in the archives said to do this and send the results: sysctl -a hw.atamodes Well, the results were huge, but this part appears to be the relevant part: hw.machine: i386 hw.model: AMD-K6(tm) 3D processor hw.ncpu: 1 hw.byteorder: 1234 hw.physmem: 130170880 hw.usermem: 105263104 hw.pagesize: 4096 hw.floatingpoint: 1 hw.machine_arch: i386 hw.ata.ata_dma: 1 hw.ata.wc: 0 hw.ata.tags: 0 hw.ata.atapi_dma: 0 hw.atamodes: dma,---,pio,---, hw.availpages: 31613 One guy said, "I had a similar problem with an old chipset which did not support dma, so the controller (ata0) made a fallback to pio." I'm afraid I'm a newbie tard and don't quite understand that and don't know what FM to R. I have an ASUS P5A motherboard that's supposed to support UDMA 33. From ASUS's web site: 2 x PCI Bus Master IDE ports (Support up to 4 IDE devices) Support: PIO Mode 3 & 4 : 17MB/Sec. DMD Mode 2: 17MB/Sec. (Max.; The Actual Transfer Speed Depends On HD) ATAPI IDE CD-ROM and LS-120 Supported Ultra DMA/33 : 33MB/Sec.(Synchronous DMA Mode) It has a 27GB IBM Deskstar HDD in it. I believe these are the stats (don't have the model number handy, but I am pretty sure it was a 7200RPM 27GB drive: Rotational Speed- 7200 RPM Interface - Ultra-ATA/66 Sustained data transfer rates - 22.9 to 13.8 MB/sec Average seek time - 9.0 ms Any ideas for me? I do so hate unresolved errors. And while we're at it, dmesg.{yesterday,today} don't appear to clear out and rotate the way I'd expect them to. I keep getting old partial dmesg output e-mailed to me in my daily security output. Is this a FAQ as well? Thanks. -Tenebrae. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message