Date: Wed, 11 Jan 2012 22:43:40 +0100 From: Fabian Keil <freebsd-listen@fabiankeil.de> To: freebsd-fs@freebsd.org Subject: Re: Unplugging disk under ZFS yield panic Message-ID: <20120111224340.72f28ef4@fabiankeil.de> In-Reply-To: <20120111204041.GA47175@icarus.home.lan> References: <20120111154722.000036e4@unknown> <20120111210708.1168781e@fabiankeil.de> <20120111204041.GA47175@icarus.home.lan>
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--Sig_/TY/An./0jB88xYb.h.J37YL Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: quoted-printable Jeremy Chadwick <freebsd@jdc.parodius.com> wrote: > On Wed, Jan 11, 2012 at 09:07:08PM +0100, Fabian Keil wrote: > > Gergely CZUCZY <phoemix@harmless.hu> wrote: > >=20 > > > I'd like to ask, whether it is normal behaviour when we're unplugging= a > > > disk under a ZFS system then on the first write a kernel panic happen= ed. > >=20 > > Sounds familiar. I currently have two PRs open for > > reproducible kernel panics after a vdev gets lost: > > http://www.freebsd.org/cgi/query-pr.cgi?pr=3Dkern/162010 > > http://www.freebsd.org/cgi/query-pr.cgi?pr=3Dkern/162036 > >=20 > > Note that the pool layouts are different, though. >=20 > Is this problem truly ZFS-specific? I'd been tracking this problem for > years, and was told it was fixed: I'm not saying that my problems are ZFS-specific. The backtraces mainly contain geom functions and no ZFS code, so ZFS might be the victim here. > http://wiki.freebsd.org/BugBusting/Commonly_reported_issues >=20 > * Panic occurs when a mounted device (USB, SATA, local image file, > etc.) is removed >=20 > Workaround: Be sure to umount all filesystems before removing the > physical device > Partial fix: Committed to CURRENT (8.0) on/prior to 2008/02/21 >=20 > There is ongoing work to fully fix this problem, ETA 2009/02=20 This is a different problem. It was even easier to reproduce and at least I haven't seen it since the fixes went in. Fabian --Sig_/TY/An./0jB88xYb.h.J37YL Content-Type: application/pgp-signature; name=signature.asc Content-Disposition: attachment; filename=signature.asc -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.18 (FreeBSD) iEYEARECAAYFAk8OApEACgkQBYqIVf93VJ0ApACfRWk3i0jNsLdGzovWgL+tGl8m 2UYAn36v0AQDMO6q+iz3TdiP5AxYnDRB =nzwg -----END PGP SIGNATURE----- --Sig_/TY/An./0jB88xYb.h.J37YL--
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