Date: Wed, 02 Apr 2008 16:37:49 +0200 From: Lapo Luchini <lapo@lapo.it> To: freebsd-fs@freebsd.org Subject: Re: ZFS hangs very often Message-ID: <ft05nu$nqd$1@ger.gmane.org> 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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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. > 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. I have similar symptoms, on a Dual AMD64, 4x SATA GELI + RAIDZ. Mainly after I turned off one drive out of 4 in a RAIDZ pool (one of the two SATA channel on the motherboard is flaky, I'm waiting for a new PCI controller) and I can consistently reproduce it mdconfig-uring a 120GB image of a ddrescue-d HDD and then mounting an UFS2 partition on it and moving massive amounts of data in that hangs within few minutes, but it will lock after a few hours anyways even not touching that huge file. I'll try to produce some debugging myself ASAP... Lapo
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