Date: Mon, 29 Aug 2011 23:02:29 +0100 From: Luke Marsden <luke@hybrid-logic.co.uk> To: Martin Matuska <mm@FreeBSD.org> Cc: freebsd-fs@freebsd.org, tech@hybrid-logic.co.uk Subject: Re: ZFS hang in production on 8.2-RELEASE Message-ID: <1314655349.7898.53.camel@pow> In-Reply-To: <4E5BFC6F.5080507@FreeBSD.org> References: <1314646728.7898.44.camel@pow> <CAFqOu6gHvwxiOkFZ0Enh3VRHcs3aD=gH4u_6=XuhfYXg5NnkpQ@mail.gmail.com> <4E5BFC6F.5080507@FreeBSD.org>
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On Mon, 2011-08-29 at 22:54 +0200, Martin Matuska wrote: > >> procstat -kk on the zfskern process gives: > >> > >> PID TID COMM TDNAME > >> KSTACK > >> 5 100045 zfskern arc_reclaim_thre mi_switch+0x176 > >> sleepq_timedwait+0x42 _cv_timedwait+0x134 arc_reclaim_thread+0x2a9 > >> fork_exit+0x118 fork_trampoline+0xe > >> 5 100046 zfskern l2arc_feed_threa mi_switch+0x176 > >> sleepq_timedwait+0x42 _cv_timedwait+0x134 l2arc_feed_thread+0x1ce > >> fork_exit+0x118 fork_trampoline+0xe > >> 5 100098 zfskern txg_thread_enter mi_switch+0x176 > >> sleepq_wait+0x42 _cv_wait+0x129 txg_thread_wait+0x79 txg_quiesce_thread > >> +0xb5 fork_exit+0x118 fork_trampoline+0xe > >> 5 100099 zfskern txg_thread_enter mi_switch+0x176 > >> sleepq_timedwait+0x42 _cv_timedwait+0x134 txg_thread_wait+0x3c > >> txg_sync_thread+0x365 fork_exit+0x118 fork_trampoline+0xe > >> > >> Any ideas on what might be causing this? > > It sounds like the bug Martin Matuska has recently fixed in FreeBSD > > and reported upstream to Illumos: > > https://www.illumos.org/issues/1313 > > > > The fix has been MFC'ed to 8-STABLE r224647 on Aug 4th. > > > > --Artem > No, I think this is more likely fixed by pjd's bugfix in r224791 (MFC'ed > to stable/8 as r225100). > > The corresponding patch is: > http://people.freebsd.org/~pjd/patches/zfsdev_state_lock.patch > Great, thanks! Will this patch apply to ZFS v15? We can't upgrade to v28 yet. -- Best Regards, Luke Marsden CTO, Hybrid Logic Ltd. Web: http://www.hybrid-cluster.com/ Hybrid Web Cluster - cloud web hosting Mobile: +1-415-449-1165 (US) / +447791750420 (UK)
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