linux-ext4 - Re: Potential data consistency issue with ASYNC

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Message-ID: <20091216203303.GA28425@atrey.karlin.mff.cuni.cz>
Date:	Wed, 16 Dec 2009 21:33:03 +0100
From:	Jan Kara <jack@...e.cz>
To:	tytso@....edu
Cc:	Oleg Drokin <green@...uxhacker.ru>, linux-ext4@...r.kernel.org,
	Alex Zhuravlev <Alex.Zhuravlev@....COM>,
	Andreas Dilger <adilger@....COM>
Subject: Re: Potential data consistency issue with ASYNC_COMMIT feature

> However, journal checksums failed horribly when we tried to enable
> them by default during the last merge window, because of bugs in ext4
> where we were modifying certain metadata blocks (in particular
> superblock and xattr's) without journalling them.  (Note to self; we
> need to back port those fixes to ext3; the lack of journalling in
> xattr in particular could mean that in some cases we could lose some
> updates that could affect SELINUX after a crash.)
  Already done by Eric and merged ;): d965736b8cb42ae51ba9c3f13488035a98d025c6,
b918397542388de75bd86c32fbfa820e5d629fa9.

								Honza
-- 
Jan Kara <jack@...e.cz>
SuSE CR Labs
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