From: David du Colombier <0intro@gmail.com>
To: 9fans@9fans.net
Subject: Re: [9fans] Fossil fs recovery
Date: Sun, 14 Aug 2011 19:55:01 +0200 [thread overview]
Message-ID: <20110814195501.74f0f22d@zinc.9fans.fr> (raw)
In-Reply-To: <7c79006a18cf3062d910d62a9e0eb893@quintile.net>
> I certinaly had problems a few years ago with fossil deadlocking,
> since I disabled ephemeral snapshots it has been quite reliable.
>
> My feeling (nothing more than that) was that the deadlocks seemed to
> occur when I receved email just at the time of the snapshot.
>
> the problem seemed to occur at a rate of once per month or two
> for my lightly loaded home server.
>
> I did try to run two file servers for a while, exporting
> /proc from the test machine with snapshots enabled to a seccond one.
> The hope was that I would be able to use acid to debug the test
> machine's fossil when the problem occured. Sadly I never caught the
> problem and had to decomission the old machine (house repairs).
It is pretty easy to reproduce this bug.
When writing a large file, run "snap -a", then "snap" four times.
Fossil should hang.
I just tried and I am able to reproduce it reliably on a new Fossil.
I've uploaded the stack traces on my website.
http://www.9grid.fr/www.9grid.fr/misc/fossil/deadlock1
--
David du Colombier
next prev parent reply other threads:[~2011-08-14 17:55 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-08-10 16:21 Bernd Maier
2011-08-10 17:46 ` David du Colombier
2011-08-10 21:58 ` Steve Simon
2011-08-10 22:12 ` ron minnich
2011-08-11 8:11 ` David du Colombier
2011-08-11 13:46 ` David Leimbach
2011-08-11 13:56 ` Jack Norton
2011-08-11 15:37 ` David du Colombier
2011-08-11 15:15 ` Steve Simon
2011-08-11 15:30 ` David du Colombier
2011-08-13 19:12 ` geoff
2011-08-13 23:44 ` Lyndon Nerenberg (VE6BBM/VE7TFX)
2011-08-14 6:21 ` Steve Simon
2011-08-14 11:48 ` Francisco J Ballesteros
2011-08-14 17:55 ` David du Colombier [this message]
-- strict thread matches above, loose matches on Subject: below --
2011-08-14 14:49 Bernd Maier
2011-08-12 9:53 Bernd Maier
2011-08-12 12:03 ` David du Colombier
2011-08-10 12:35 Bernd Maier
2011-08-10 15:25 ` Steve Simon
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