Date: Wed, 27 Jun 2007 11:30:33 +0200 From: Jan Schmidle <freebsd-current@jschmidle.org> To: Pawel Jakub Dawidek <pjd@FreeBSD.org> Cc: Current@FreeBSD.org Subject: Re: ZFS deadlocks or panics Message-ID: <46822E39.2010507@jschmidle.org> In-Reply-To: <20070627070245.GB21749@garage.freebsd.pl> References: <46811756.105@jschmidle.org> <20070627070245.GB21749@garage.freebsd.pl>
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Pawel Jakub Dawidek wrote: > On Tue, Jun 26, 2007 at 03:40:38PM +0200, Jan Schmidle wrote: >> I'm trying to bild a storagebox with ZFS. Now I have some problems >> which seems to be related to ZFS. Perhaps after adding disks to an >> existing pool, all consoles trying to execute a command with I/O >> operations freezes. Only sometimes I get a panic. > > Are you sure the disks are fine? Not 100%, but as the problem also shows up when I'm destroying pools, I don't think that there is a Problem. But I will check this. > >> I played around with the tuning variables, proposed in >> http://wiki.freebsd.org/ZFSTuningGuide >> but didn't help. >> >> The box is running -CURRENT amd64/SMP in a GENERIC configuration. >> Last cvsup and build was "Fri Jun 22" >> >> I also tried with i386 with and without SMP. >> >> I collected some Information and uploaded it to >> https://jschmidle.org/upload/ >> >> In "panic1" you can see a whole system-bootup resulting in a Panic. >> "panic2" is just another lockup during bootup. > > Backtraces would tell us if this is ZFS or not, can you include them? I will post a Backtrace as soon as I get a panic again. > >> "areca" contains the information about the raid controller in use. >> in "dump", I tried to create a coredump during a lockup. >> "alltrace", "witness", "ps" also have been created during the lockup. >> "sysctl" contains the current settings. >> >> Can anyone recognize where the problem is coming from or is >> additional information needed? > The following were created during a panic. ----------------------------- db> show lockedvnods Locked vnodes db> ----------------------------- db> show alllocks Process 4144 (vdev:worker da2) thread 0xffffff0004b10000 (100230) exclusive sleep mutex zfs:vdev:geom:queue r = 0 (0xffffff000707d4b0) locked @ /usr/src/sys/modules/zfs/../../contrib/opensolaris/uts/common/fs/zfs/vdev_geom.c:203 Process 4118 (spa_zio_intr_2) thread 0xffffff000456a680 (100172) exclusive sleep mutex zio_cache (UMA zone) r = 0 (0xffffff00cff40b70) locked @ /usr/src/sys/vm/uma_core.c:2257 Process 20 (swi2: cambio) thread 0xffffff00010ea9c0 (100017) exclusive sleep mutex Giant r = 0 (0xffffffff809db980) locked @ /usr/src/sys/cam/cam_xpt.c:7141 db> ----------------------------------------------------- ----------------------------------------------------- And these during lockup ----------------------------- db> show lockedvnods Locked vnodes 0xffffff0004a2dd90: tag syncer, type VNON usecount 1, writecount 0, refcount 2 mountedhere 0 flags () lock type syncer: EXCL (count 1) by thread 0xffffff000430c9c0 (pid 48) db> ----------------------------- db> show alllocks db> -----------------------------
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