Date: Mon, 7 Apr 2008 10:51:56 +0200 From: Ulrich Spoerlein <uspoerlein@gmail.com> To: Attila Nagy <bra@fsn.hu> Cc: freebsd-fs@freebsd.org Subject: Re: ZFS hangs very often Message-ID: <20080407085156.GA30355@acme.spoerlein.net> In-Reply-To: <47F0F1E8.1080504@fsn.hu> References: <47F0D02B.8060504@fsn.hu> <20080331152251.62526181@peedub.jennejohn.org> <47F0EDD6.8060402@fsn.hu> <47F0F1E8.1080504@fsn.hu>
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On Mon, 31.03.2008 at 05:15:14 +0000, Attila Nagy wrote: > On 2008.03.31. 15:57, Attila Nagy wrote: > > My system completely locks up, I can't start new processes, but > > runnings ones -which don't do IO- can continue (for example a top). > > I don't know ZFS internals (BTW, /usr and others are of course > > different ZFS filesystems on the pool), but it might be, that > > something major gets locked and that's why it stops here. > > > > Anyways, if somebody can help to back this out, I'm here to try > > patches, or do experiments. > I forgot to tell -I don't know, maybe it's important-, that I have an > SMP box (but tried with UP kernel, the effect is the same) and > compression is enabled on every filesystems. Hi, I had frequent deadlocks as you just describe when using GMIRROR on SMP systems and running with PREEMPTION. Could you try a kernel without PREEMPTION? Or perhaps break the GMIRRORs for testing purposes? Cheers, Ulrich Spoerlein -- It is better to remain silent and be thought a fool, than to speak, and remove all doubt.
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