linux-ext4 - Re: [PATCH] ext4/jbd2: don't wait (forever) for stale tid caused by wraparound

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Message-ID: <1363582395.3937.319.camel@deadeye.wl.decadent.org.uk>
Date:	Mon, 18 Mar 2013 04:53:15 +0000
From:	Ben Hutchings <ben@...adent.org.uk>
To:	George Barnett <gbarnett@...assian.com>
Cc:	Theodore Ts'o <tytso@....edu>, linux-ext4@...r.kernel.org,
	Debian kernel maintainers <debian-kernel@...ts.debian.org>
Subject: Re: [PATCH] ext4/jbd2: don't wait (forever) for stale tid caused by
 wraparound

On Mon, 2013-03-18 at 15:24 +1100, George Barnett wrote:
> On Monday, 18 March 2013 at 1:54 PM, Theodore Ts'o wrote:
[...]

> > I think a patch like this should fix things; I've run a stress test
> > with a hack to increment the transaction id by 1 << 24 after each
> > commit, to more quickly cause an tid wrap, and the regression tests
> > seem to be passing without complaint.
> Excellent news.  Again, thank you for your help in this regard.
> 
> 
> @Ben - could you let me know what your preferred course of action
> would be here?  As I'm sure you can understand, I do not wish to
> maintain a forked kernel from Debian upstream.  Is this something you
> would be prepared to integrate into the 3.2 BPO kernels?
[...]

We need you to verify that this fix works first.  If it does, it should
get included in the various 3.x.y stable branches and in Debian kernel
packages.

Ted might prefer you to test this against current mainline (3.9-rc3),
though you may find it easier to test against the version you already
have.  In the latter case you'll need a slightly modified version of the
patch (attached) and instructions at
<http://kernel-handbook.alioth.debian.org/ch-common-tasks.html#s-common-official>.

Ben.

-- 
Ben Hutchings
Never attribute to conspiracy what can adequately be explained by stupidity.

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