Date: Mon, 31 Jan 2005 00:06:39 -0600 From: "Brian" <bbayorgeon@new.rr.com> To: <freebsd-questions@freebsd.org> Subject: ATA driver time out problems Message-ID: <000901c5075b$185e51a0$4402000a@Marshal>
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I've added (relocated from an old FBSD box) to my 5.3 release box. It is a data drive and not required for bootup. I told the BIOS to save power and shut the drive down after a period of inactivity because it is a somewhat noisy drive. Now when the drive wakes up I always get things like: Jan 30 20:04:02 rakort kernel: ad2: TIMEOUT - READ_DMA retrying (2 retries left) LBA=255 Jan 30 20:04:05 rakort kernel: ad2: FAILURE - READ_DMA timed out Jan 30 20:14:41 rakort kernel: ad2: TIMEOUT - READ_DMA retrying (2 retries left) LBA=255 Jan 30 20:14:45 rakort kernel: ad2: FAILURE - READ_DMA timed out Jan 30 20:50:52 rakort kernel: ad2: TIMEOUT - READ_DMA retrying (2 retries left) LBA=255 Jan 30 20:50:56 rakort kernel: ad2: FAILURE - READ_DMA timed out Jan 30 21:15:50 rakort kernel: ad2: TIMEOUT - WRITE_DMA retrying (2 retries left) LBA=287 Jan 30 21:15:54 rakort kernel: ad2: FAILURE - WRITE_DMA timed out Jan 30 21:41:47 rakort kernel: ad2: TIMEOUT - READ_MUL retrying (2 retries left) LBA=12095 Jan 30 21:41:50 rakort kernel: ad2: FAILURE - READ_MUL timed out Jan 30 23:43:34 rakort kernel: ad2: TIMEOUT - READ_DMA retrying (2 retries left) LBA=12127 Jan 30 23:43:38 rakort kernel: ad2: FAILURE - READ_DMA timed out It seems to wake up and then work as it should, but the driver isn't patient enough to allow it to wake up. I've been doing some reading / reseach, but can't find what I believe to be a reasonable solution. I have read about turing off DMA access but I'm not real interested because that will impact my main drive and performance. Seems like the problem is fairly wide spread and I was just wondering if any other solutions are out there. Thanks Brian
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