Date: Sun, 28 Mar 1999 17:14:57 +0100 (BST) From: Doug Rabson <dfr@nlsystems.com> To: Darren Reed <avalon@coombs.anu.edu.au> Cc: Thomas David Rivers <rivers@dignus.com>, dcs@newsguy.com, hackers@freebsd.org Subject: Re: another ufs panic.. Message-ID: <Pine.BSF.4.05.9903281713420.3322-100000@herring.nlsystems.com> In-Reply-To: <199903281546.BAA20216@cheops.anu.edu.au>
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On Mon, 29 Mar 1999, Darren Reed wrote: > In some mail from Thomas David Rivers, sie said: > > > > > Darren Reed wrote: > > > > > > > > I never realised ufs was so bad on freebsd...I experienced another > > > > panic whilst using pax to copy one fs to another (was already 90% there > > > > on the destination due to the crash from dump/restore). > > > > > > Neither did anyone else, since nobody seems to have the problem you > > > describe. Or, if they do, they are so screwed up that they can't > > > even open a PR. So... how about opening a PR? > [...] > > It is a problem which is difficult to reproduce. > > > > Several discussions about this particular problem have been had > > for about two years now... under various heading; the most humorous > > was the "Dave Rivers memorial panic" :-) You can find such > > discussions in the mail archive. > > > > If you have a reliable reproduction of it; we'd sure be > > interested in the details. > > Maybe later I'll try it again...right now I'm looking for a good way to > quickly copy files from disk to disk... pax seems to interfere a lot with > file modes, etc trying rsync now but maybe I have to go back to tar! > > > Just for what its worth - I don't believe the problem to be in the UFS code, > > but at a lower level. That's just my opinion... > > Hmmm. > > [...] > > And... lastly, with a possibly SCSI-related problem - be sure termination > > is right. Don't trust the 2940UW auto-termination, do it yourself. > > FWIW, I had a lot of trouble getting termination "right" - I've internal > 8bit, external 8bit and internal 16bit SCSI devices (which I'm not sure is > actually supported...). But anyway, NT installed ok, as did BSDi (but both > onto the 2GB disk - BSDi 4.0 doesn't seem to know about targets > 7 on their > boot diskette...sigh). If this is an aha2940 or similar controller, then it doesn't support using all three connectors at the same time. Using both internal connectors at the same time as the external one is just asking for trouble. -- Doug Rabson Mail: dfr@nlsystems.com Nonlinear Systems Ltd. Phone: +44 181 442 9037 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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