Date: Sat, 3 Nov 2001 14:24:42 +0100 From: "Anthony Atkielski" <anthony@atkielski.com> To: "FreeBSD SCSI" <freebsd-scsi@freebsd.org> Subject: Parity errors with Adaptec 29160 SCSI Adapter Message-ID: <007201c1646a$e74786e0$0a00000a@atkielski.com>
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I think this is already being discussed, but I only just now joined this list: I installed an Adaptec 29160 SCSI adapter in my FreeBSD 4.3 STABLE machine yesterday, and I get occasional spurts of parity errors on ahc0, like this: ahc0: PCI error Interrupt at seqaddr = 0x8 ahc0: Data Parity Error Detected during address or write data phase The address of 0x8 is sometimes 0x9, with no obvious pattern. I get about 20 of these in a row when they occur, over the course of 30-60 seconds. The system is almost always idle, as it is not a production system, so I'm not sure if any activity tends to trigger the errors. The system continues to run normally in other respects, as far as I can tell, but the last time I booted cold (shutdown now, then wait for a shell prompt, then off/on on the box), there were some file system errors listed, all of which were recovered. My intuition tells me that this is not an actual hardware defect, but probably a software problem, or a hardware/software configuration error. Is this a known problem? Configuration: Motherboard: Microtech ATX Chaintech 7 AIA Processor: AMD Thunderbird 1.4 GHz Memory: 256 MB RAM clock: 133 MHz The only disk is an IDE 40 GB disk; there are no devices attached to the 29160 as yet (I plan to attach a 4mm DAT drive to it once I get it stable, though). There are only three PCI slots (all 32-bit): one is taken up by a 3Com 10/100 NIC, another is empty, and the third holds the 29160 (with only a 32-bit connection, since I don't have any 64-bit slots). I had these bursts of errors multiple times yesterday; I saw that PnP was turned on in the BIOS and turned it off, and that seemed to help (probably coincidence). Another burst occurred during the night. I had a funny feeling when I bought this SCSI card, like it was going to cause me trouble or something. Unfortunately the computer store didn't have the 2940UW that I probably would have preferred. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-scsi" in the body of the message
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