Date: Tue, 17 Nov 2015 10:23:09 -0600 From: Adam Vande More <amvandemore@gmail.com> To: kpneal@pobox.com Cc: Gerhard Schmidt <schmidt@ze.tum.de>, Polytropon <freebsd@edvax.de>, FreeBSD Questions <freebsd-questions@freebsd.org> Subject: Re: Random Lockup with FreeBSD 10.2 on SuperMicro Boards Message-ID: <CA%2BtpaK3065Tw_NC=VXa0Pq3ZD_mXUcHhvoVrSOw8feHr7i5gaw@mail.gmail.com> In-Reply-To: <20151116164507.GA87691@neutralgood.org> References: <56498205.3060806@ze.tum.de> <20151116094334.GS2604@mordor.lan> <5649A761.7040303@ze.tum.de> <20151116111609.a9757a4a.freebsd@edvax.de> <5649AEC3.5090104@ze.tum.de> <20151116164507.GA87691@neutralgood.org>
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On Mon, Nov 16, 2015 at 10:45 AM, <kpneal@pobox.com> wrote: > When in doubt use 'fsck -f' to force a check despite the filesystem > being marked clean. > Yes, but a full fsck should be run on a regular basis regardless of suspicion. Personally, I got bit by SU (plain) a long time ago and I've never really > trusted it since. I strongly advise you to 'fsck -f' on your /var just to > rule out _any_ corruption there. > A lower level fs error isn't going be to detected by a background fsck(only does preening) or SUJ fsck(trusts the journal). Such errors can occur on *any* journaled fs. Periodically doing a full fsck on fs's is actually something Linux does better. https://lists.freebsd.org/pipermail/freebsd-current/2013-July/042951.html Many think SU or SUJ obviate the need for a periodic full fsck. It does not. SU and SUJ devs have repeated this since their respective inception. [1] Hardware still lies, bitrot still occurs, do a full fsck. Vague reports of "I don't trust this" aren't helpful. If you know of a bug, please report it so it can be addressed. [1] https://lists.freebsd.org/pipermail/freebsd-arch/2010-January/009872.html -- Well initially it's claimed "eliminate fsck after an unclean shutdown" but details it later showing fsck using journal isn't a full fsck. -- Adam
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