From mboxrd@z Thu Jan 1 00:00:00 1970
From: bugzilla-daemon@bugzilla.kernel.org
Subject: [Bug 42723] EXT4-fs error: ext4_mb_generate_buddy
Date: Tue, 05 Aug 2014 12:38:33 +0000
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--- Comment #23 from Theodore Tso ---
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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