Date: Thu, 20 Jul 2000 09:47:51 +0930 From: Greg Lehey <grog@lemis.com> To: Chris Hardie <chris@summersault.com> Cc: freebsd-questions@FreeBSD.ORG Subject: Re: mysterious ffs_clusteralloc kernel panics: need help! Message-ID: <20000720094750.A50320@wantadilla.lemis.com> In-Reply-To: <Pine.BSF.4.21.0007190410410.531-100000@summersault.com> References: <Pine.BSF.4.21.0007190410410.531-100000@summersault.com>
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On Wednesday, 19 July 2000 at 4:26:49 -0500, Chris Hardie wrote: > > Greetings! > > I'm having a very frustrating problem involving some seemingly random > kernel panics. Every couple of days, around 3:30 in the morning when > periodic:daily is in to some hot and heavy disk activity, the kernel > issues a "ffs_clusteralloc: map mismatch" message and the machine reboots. > I have rebuilt the kernel, run fsck several times, checked the bios > settings, and can't figure out what to do next. Any insight is much > appreciated - it's a high production system and we just can't have it > rebooting! > > Possibly related: in each crash, the /var/log/messages file has a large > 4-5 hour gap in it preceeding the crash, where it appears that syslogd > isn't writing out its activity. > > The problem appears to be very similar to GNATS PR 16740: > > http://www.freebsd.org/cgi/query-pr.cgi?pr=16740 > > which looks unresolved. > > > bash-2.03# gdb -k > ... > (kgdb) symbol-file kernel.debug > (kgdb) exec-file /var/crash/kernel.1 > (kgdb) core-file /var/crash/vmcore.1 > IdlePTD 3616768 > initial pcb at 2ec628 > panicstr: lockmgr: locking against myself > panic messages: > --- > panic: ffs_clusteralloc: map mismatch > > syncing disks... panic: lockmgr: locking against myself > > dumping to dev 20401, offset 542720 > dump 255 254 253 252 251 250 249 248 247 246 245 244 243 242 241 240 239 > <snip> > --- > #0 0xc0163d7f in boot () OK, now do a backtrace ('bt'). > # dmesg > Copyright (c) 1992-1999 FreeBSD Inc. We don't need this. Greg -- When replying to this message, please copy the original recipients. For more information, see http://www.lemis.com/questions.html Finger grog@lemis.com for PGP public key See complete headers for address and phone numbers To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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