Date: 22 Aug 1999 18:22:23 +0200 From: naddy@mips.rhein-neckar.de (Christian Weisgerber) To: freebsd-scsi@freebsd.org Subject: Re: Bizarre effect reading old tape Message-ID: <7pp83v$1id$1@bigeye.rhein-neckar.de> References: <19990821154220.H16148@mips.rhein-neckar.de> <Pine.BSF.4.05.9908211001210.91597-100000@semuta.feral.com>
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Matthew Jacob <mjacob@feral.com> wrote: > Put it in variable mode and see what happens- I suspect that the 'fake' > variable that some QIC drives have might be at fault. Okay, now that I've managed to change block sizes without booting new kernels, here are the results: fixed/512 the tape is read correctly fixed/1024 the tape is read with interspersed null blocks variable the tape isn't read at all Specifically, in variable mode I get a SCSI error again. tar and dd abort with "/dev/nrsa0: Invalid argument", so I assume sa(4) has propagated EINVAL back to the read(2) call. I have a kernel with CAMDEBUG running now. If somebody tells me just what debugging output to enable and report, I'll happily post the results. -- Christian "naddy" Weisgerber naddy@mips.rhein-neckar.de To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-scsi" in the body of the message
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