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Message-ID: <bug-42723-13602-uRdTfwxu55@https.bugzilla.kernel.org/>
Date: Thu, 21 Aug 2014 09:21:35 +0000
From: bugzilla-daemon@...zilla.kernel.org
To: linux-ext4@...r.kernel.org
Subject: [Bug 42723] EXT4-fs error: ext4_mb_generate_buddy
https://bugzilla.kernel.org/show_bug.cgi?id=42723
--- Comment #25 from Zhiyong Wu <zwu.kernel@...il.com> ---
Hi, Ted
I checked debian 7.5/6 kernel src code, it hasn't merged commit 007649375f6af2
,so this issue whih i met seems to be not caused by this commit.
(In reply to Theodore Tso from comment #23)
> Zhiyong,
The ext4_mb_generate_buddy() error message just means that there
> is an inconsistency between the allocation bitmap and the allocation
> statistics in the block group descriptor. So people who just google for
> "ext4_mb_generate_buddy" can often find old bugs that had similar symptoms.
> The most recent bugfix in this area was caused by a backport of commit:
> 007649375f6af2 ext4: initialize multi-block allocator before checking block
> descriptors
which caused errors after a replay. It was reverted in
> mainline commit:
f9ae9cf5d72b39 ext4: revert commit which was causing fs
> corruption after journal replays
You might want to check to see if that
> might be applicable for your kernel.
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