linux-ext4 - Re: Apparent serious progressive ext4 data corruption bug in 3.6.3 (and other stable branches?)

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Message-ID: <alpine.LNX.2.00.1210232359180.29283@eggly.anvils>
Date:	Wed, 24 Oct 2012 00:00:46 -0700 (PDT)
From:	Hugh Dickins <hughd@...gle.com>
To:	Theodore Ts'o <tytso@....edu>
cc:	Eric Sandeen <sandeen@...hat.com>, Nix <nix@...eri.org.uk>,
	linux-ext4@...r.kernel.org, linux-kernel@...r.kernel.org,
	"J. Bruce Fields" <bfields@...ldses.org>,
	Bryan Schumaker <bjschuma@...app.com>,
	Peng Tao <bergwolf@...il.com>, Trond.Myklebust@...app.com,
	gregkh@...uxfoundation.org,
	Toralf Förster <toralf.foerster@....de>
Subject: Re: Apparent serious progressive ext4 data corruption bug in 3.6.3
 (and other stable branches?)

On Wed, 24 Oct 2012, Theodore Ts'o wrote:
> Journal flushes outside of an unmount does
> happen as part of online resizing, the FIBMAP ioctl, or when the file
> system is frozen.  But it didn't sound like Toralf or Nix was using
> any of those features.  (Toralf, Nix, please correct me if my
> assumptions here is wrong).

I believe it also happens at swapon of a swapfile on the filesystem.

Hugh
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