Date: Mon, 24 Jul 2000 00:20:02 -0700 (PDT) From: Joakim Henriksson <murduth@ludd.luth.se> To: freebsd-bugs@FreeBSD.org Subject: Re: kern/16740: kernel panics Message-ID: <200007240720.AAA27312@freefall.freebsd.org>
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The following reply was made to PR kern/16740; it has been noted by GNATS. From: Joakim Henriksson <murduth@ludd.luth.se> To: Chris Hardie <chris@summersault.com> Cc: freebsd-gnats-submit@FreeBSD.ORG, Joakim Henriksson <murduth@ludd.luth.se>, Sheldon Hearn <sheldonh@uunet.co.za>, Greg Lehey <grog@lemis.com> Subject: Re: kern/16740: kernel panics Date: Mon, 24 Jul 2000 09:15:03 +0200 > I'm sorry, I didn't have kernel debugging set up at that time under the > new OS version. However, I've since installed a kernel with debugging > symbols, so I'm ready for it the next time (at 3:30 AM, sigh). > > Note that this is different from my original error, "ffs_clusteralloc: map > mismatch". > > I saw something in the mail archives about disabling a burst setting in > the PCI BIOS fixing map mismatch problems with SCSI. I don't really know > what that might mean, but thought I'd mention it. They might mean turning of the PCI burst transfer mode. This will give you less performance of the PCI bus. > Sheldon had asked for some output from boot -v. It's below, in all its > expansiveness (sorry if that's more than you wanted). It's easier to trim if there is to much than to reconstruct if there is to little ;) > I hope this helps - I'm buying beer/pizza/both for whomever can help me > make this go away :) Mr Ian Dowse looked at my crashdumps and saw that the codepath was through the reallocation code. He sugested trying to turn that of by doing (as superuser): sysctl -w vfs.ffs.doreallocblks=0 I haven't seen any crashes since i turned it off. But that really doesn't say anything since this problem is so hard to catch. Try it and mail to the list whether it works or not, since both datapoints are valuable. -- regards/ Joakim To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-bugs" in the body of the message
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