Date: Fri, 10 Aug 2001 17:20:12 -0700 (PDT) From: Matthew Jacob <mjacob@feral.com> To: Jim Bryant <kc5vdj@yahoo.com> Cc: Mike Tancsa <mike@sentex.net>, <scsi@freebsd.org> Subject: Re: SCSI timeout problems going from May23 to July13 kernel Message-ID: <20010810171111.A64952-100000@wonky.feral.com> In-Reply-To: <3B7477E3.81FC089C@yahoo.com>
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Mike's issue was with -stable. But that in fact *was* a valid timeout (DDS tape wierdness). In terms of EOT/EOM detection- FreeBSD-stable is okay. For FreeBSD-current I've done some work and things are a bit better, but I still: a) Don't handle fixed block mode correctly. b) Probably don't handle single eot model correctly. and, most annoying of all, there seems to be something of a discrepancy about amount of data actually written when early warning shows up. I've had at least one drive report a residual when early warning was detected when in fact it wrote the data- this caused my validation program to fail to check. I need about 4-5 full days more on this. I possibly should do a partial checkin if I can't get that done soon. I'm also waiting for another tape drive I bought on EBay (my 8505XL died, so I needed to get at least one reasonable Exabyte to test with). You're welcome to fool around with the current sa.. http://people.freebsd.org/~mjacob/scsi_sa.c -matt To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-scsi" in the body of the message
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