Date: Sat, 31 Oct 2009 00:28:05 +0100 From: Pawel Jakub Dawidek <pjd@FreeBSD.org> To: stef@memberwebs.com Cc: freebsd-fs@freebsd.org Subject: Re: 8.0-RC2: ZFS deadlock with zfs receive Message-ID: <20091030232805.GA2996@garage.freebsd.pl> In-Reply-To: <4AEA0EAD.1050302@memberwebs.com> References: <804B79F6-27CE-40D2-8AB8-6FC378F448FA@sarenet.es> <4AEA0EAD.1050302@memberwebs.com>
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--a8Wt8u1KmwUX3Y2C Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Thu, Oct 29, 2009 at 03:52:45PM -0600, Stef Walter wrote: > Borja Marcos wrote: > > I've been sending some alltraces to pjd about this easy to reproduce > > problem. I am using zfs send/zfs receive to replicate a dataset from one > > server to another. At 1 minute intervals, an incremental snapshot is > > sent to update the dataset copy. If there is reading activity on the > > dataset copy, a deadlock can happen rendering ZFS and all the FS > > subsystem unusable. I've tried with 8.0RC2 and it still happens. I was able to reproduce it, but I don't have fix yet. > FWIW, another (or the same) zfs recv deadlock I've been trying to get to > the bottom of: >=20 > http://lists.freebsd.org/pipermail/freebsd-fs/2009-October/006999.html Could you guys recompile your kernel after uncommenting line: #CFLAGS+=3D-DDEBUG=3D1 in sys/modules/zfs/Makefile? You should see panic on assertion instead of deadlock, I believe. --=20 Pawel Jakub Dawidek http://www.wheel.pl pjd@FreeBSD.org http://www.FreeBSD.org FreeBSD committer Am I Evil? Yes, I Am! --a8Wt8u1KmwUX3Y2C Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.4 (FreeBSD) iD8DBQFK63aEForvXbEpPzQRApycAJ45492n8fdkSgJqrkeTVgUouET/SwCgoj82 QwcsIo1WEIz0Q77WVm7jSAM= =7YXH -----END PGP SIGNATURE----- --a8Wt8u1KmwUX3Y2C--
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