Date: Tue, 10 Mar 1998 10:24:47 -0800 (PST) From: Doug White <dwhite@gdi.uoregon.edu> To: Font <font@Mcs.Net> Cc: questions@FreeBSD.ORG Subject: Re: Does "a" flag to dump work? Message-ID: <Pine.BSF.3.96.980310102216.14397Q-100000@gdi.uoregon.edu> In-Reply-To: <Pine.BSF.3.95.980309220944.18306C-100000@Jupiter.Mcs.Net>
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On Mon, 9 Mar 1998, Font wrote: > I seem to recall (probably in one of Doug White's messages) hearing that > the "a" flag to dump (use end-of-media indication for tape changes) may > not have been working properly for some version of FreeBSD. Having just > written a long dump and gotten a write error on an almost-new tape, I > think this may be happening to me, but I want to make sure that it is or > isn't before doing a hardware inspection. > > I'm running 2.2.5-R on a Pentium 120, AHA-2940UW, and WangDAT 3400DX, with > 90 m DAT tapes. When I write many partitions to the tape with "dump 0auf > /dev/nrst0 /mymountpoint", I get a tape write error about 2 gigabytes into > the tape. > > If the a flag is currently broken, then I may repartition new systems to > not have partitions greater than 2 gigabytes, or maybe I should just start > specifying the length for dump, too. Hmm. This is a known bug. Some tapes (and maybe controllers) return a read/write error at EOT instead of just an indication. Hopefully dump can be reprogrammed to take advantage of this. I'm trying to look at the open GNATS PRs, but you might submit one if there isn't one in there already. Doug White | University of Oregon Internet: dwhite@resnet.uoregon.edu | Residence Networking Assistant http://gladstone.uoregon.edu/~dwhite | Computer Science Major To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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