Date: Thu, 17 Aug 2006 07:30:03 -0500 From: Eric Anderson <anderson@centtech.com> To: Kostik Belousov <kostikbel@gmail.com> Cc: FreeBSD Hackers <freebsd-hackers@freebsd.org> Subject: Re: 6-STABLE snapshot (background fsck) lock-up Message-ID: <44E4614B.9000902@centtech.com> In-Reply-To: <20060817122502.GF1483@deviant.kiev.zoral.com.ua> References: <44E45C3F.6060901@centtech.com> <20060817122502.GF1483@deviant.kiev.zoral.com.ua>
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On 08/17/06 07:25, Kostik Belousov wrote: > On Thu, Aug 17, 2006 at 07:08:31AM -0500, Eric Anderson wrote: >> I've seen this several times now, but this time I got a dump. >> Basically, the system comes up after unclean shutdown, throws a bunch of >> filesystems into the background fsck list, and begins 60 seconds later. >> After some amount of time, the system will lock up, presumably hung >> waiting on locks. >> >> Here's some info: >> lock type bufwait: EXCL (count 1) by thread 0xffffff0128812980 (pid 804) >> lock type getblk: EXCL (count 1) by thread 0xffffff0128812980 (pid >> 804)Locked vnodes >> >> 0xffffff01c5c9f000: tag ufs, type VREG >> usecount 1, writecount 0, refcount 13656 mountedhere 0 >> flags (VV_SYSTEM) >> v_object 0xffffff01b09542a0 ref 0 pages 1691637 >> lock type snaplk: EXCL (count 1) by thread 0xffffff0128812980 (pid >> 804) >> ino 4, on dev label/vol4 >> >> >> >> How can I use kgdb to get more debugging information from this? >> > Look at the > http://www.freebsd.org/doc/en_US.ISO8859-1/books/developers-handbook/kerneldebug-deadlocks.html > for instructions for ddb. > > What is the date of the system checkout ? 6-STABLE from ~8/12/06. So there's not much that can be done with the vmcore? I'll add the options to my kernel config (I was missing a few), and I suppose wait for another deadlock. Thanks! Eric -- ------------------------------------------------------------------------ Eric Anderson Sr. Systems Administrator Centaur Technology Anything that works is better than anything that doesn't. ------------------------------------------------------------------------
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