Date: Thu, 8 Sep 2011 21:54:06 +0200 From: Pawel Jakub Dawidek <pjd@FreeBSD.org> To: luke@hybrid-logic.co.uk Cc: freebsd-fs@freebsd.org, tech@hybrid-logic.co.uk, Martin Matuska <mm@FreeBSD.org> Subject: Re: ZFS hang in production on 8.2-RELEASE Message-ID: <20110908195405.GB1667@garage.freebsd.pl> In-Reply-To: <1315502388.11352.15.camel@pow> References: <1314646728.7898.44.camel@pow> <CAFqOu6gHvwxiOkFZ0Enh3VRHcs3aD=gH4u_6=XuhfYXg5NnkpQ@mail.gmail.com> <4E5BFC6F.5080507@FreeBSD.org> <1314655349.7898.53.camel@pow> <1315502388.11352.15.camel@pow>
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--nFreZHaLTZJo0R7j Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Thu, Sep 08, 2011 at 06:19:48PM +0100, Luke Marsden wrote: > On Mon, 2011-08-29 at 23:02 +0100, Luke Marsden wrote: > > On Mon, 2011-08-29 at 22:54 +0200, Martin Matuska wrote: > > > No, I think this is more likely fixed by pjd's bugfix in r224791 (MFC= 'ed > > > to stable/8 as r225100). > > >=20 > > > The corresponding patch is: > > > http://people.freebsd.org/~pjd/patches/zfsdev_state_lock.patch > > >=20 > >=20 > > Great, thanks! Will this patch apply to ZFS v15? We can't upgrade to > > v28 yet. > >=20 >=20 > We just got another hang in production, same procstat -kk on zfs umount > -f as before: >=20 > 52739 100186 zfs - mi_switch+0x176 > sleepq_wait+0x42 _sleep+0x317 zfsvfs_teardown+0x269 zfs_umount+0x1c4 > dounmount+0x32a unmount+0x38b syscallenter+0x1e5 syscall+0x4b > Xfast_syscall+0xe2=20 >=20 > Please advise whether the zfsdev_state_lock patch with apply to > 8.2-RELEASE and whether it is wise to attempt to apply it? The zfsdev_state_lock patch won't help you, it fixes totally unrelated problem. Could you send backtraces of all processes? --=20 Pawel Jakub Dawidek http://www.wheelsystems.com FreeBSD committer http://www.FreeBSD.org Am I Evil? Yes, I Am! http://yomoli.com --nFreZHaLTZJo0R7j Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.14 (FreeBSD) iEYEARECAAYFAk5pHV0ACgkQForvXbEpPzQySgCgl8uMWMXIv2L6VcSKj+IXXDLa u3oAn06fubxn8+j9nO5IqlR+cDkuJq0L =AFna -----END PGP SIGNATURE----- --nFreZHaLTZJo0R7j--
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