Date: Thu, 09 Jul 2009 17:35:11 +0200 From: Thomas Ronner <thomas@ronner.org> To: freebsd-stable@freebsd.org Cc: Andriy Gapon <avg@icyb.net.ua> Subject: Re: ZFS: zpool scrub lockup Message-ID: <4A560E2F.1050906@ronner.org> In-Reply-To: <4A55F96B.6070303@icyb.net.ua> References: <1247085058.6197.18.camel@bugstore> <4A55F96B.6070303@icyb.net.ua>
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Hi Andriy, Andriy Gapon wrote: > on 08/07/2009 23:30 Thomas Ronner said the following: >> Hello, >> >> I don't know whether this is the right list; maybe freebsd-fs is more >> appropriate. So please redirect me there if this isn't the right place. >> >> My system (i386, Athlon XP) locks hard when scrubbing a certain pool. It >> has been doing this for at least a couple of months now. For this reason >> I upgraded to 7.2-STABLE recently as this had the latest ZFS bits, but >> this doesn't help. It even makes the problem worse: in previous versions >> I just hit the reset button and forgot about it, but now it "remembers" >> that it was scrubbing (I presume) and tries to resume at the exact same >> place, locking up again. This means I haven't been able to mount these >> ZFS volumes successfully: the moment I do a /etc/rc.d/zfs start from >> single user mode (I have my /, /var and /usr on UFS) it locks up in a >> couple of seconds. And by locks up I really mean locks up. No panic, >> nothing. Pressing the reset button on the chassis is the only way to >> reboot. > > You can try adding SW_WATCHDOG option to your kernel which might help catching the > lockup. Things like INVARIANTS and WITNESS might help th debugging too. > Serial console for remote debugging would be very useful too. > I'll definitely try those and report back on this list. Thanks for your answer! Regards, Thomas
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