Date: Wed, 23 Jan 2002 11:59:54 -0800 From: Dave Hayes <dave@jetcafe.org> To: "Justin T. Gibbs" <gibbs@scsiguy.com> Cc: freebsd-scsi@FreeBSD.ORG Subject: Re: Adaptec 29160 woes Message-ID: <200201231959.LAA20192@hokkshideh.jetcafe.org>
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Justin T Gibbs <gibbs@scsiguy.com> writes: >> Suspecting the disk, I checked and scanned da5 by the BIOS verify >> utility. It's perfectly fine. > The Adaptec BIOS may have negotiated down to a speed that allowed > the verify to proceed. FreeBSD's SCSI layer doesn't have any speed > fallback support yet. The BIOS won't tell you if it has done this. Joy. Thanks for enlightening me on this, now I know not to use this to verify hardware integrity. >> dd if=/dev/zero of=/dev/rda5s1 > It is the target's responsibility to check the CRC or parity during > a write. This just means that the target is able to read what we > are writing to it okay, but we are not always able to read what the > target is writing to us. Hmm, so would the inverse test (i.e. dd if=/dev/rda5s1 of=/dev/null) be a better indicator of problems? > I doubt it is the controller. I would suspect the drive has a > bad connector. Do you get the same behavior if you force > narrow-async on this drive via SCSI-Select? If that means set "Enable wide negotiation" to "NO", then I just tried that (only on the suspect disk at the end of the chain) and I still get aborted commands trying to re-install the OS. I think I agree about your suspect though, the drives are mounted in those removable bays. The drive was replaced to see if that was the problem, but the bay was not. Back to the hardware bench for me. Thanks. ;) ------ Dave Hayes - Consultant - Altadena CA, USA - dave@jetcafe.org >>> The opinions expressed above are entirely my own <<< In order to be utterly happy the only thing necessary is to refrain from comparing this moment with other moments in the past, which I often did not fully enjoy because I was comparing them with other moments of the future. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-scsi" in the body of the message
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