linux-ext4 - [Bug 42723] EXT4-fs error: ext4_mb_generate

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Date:	Mon, 20 Feb 2012 12:12:23 GMT
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


Pekka Pietikäinen <pp@...oulu.fi> changed:

           What    |Removed                     |Added
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                 CC|                            |pp@...oulu.fi




--- Comment #2 from Pekka Pietikäinen <pp@...oulu.fi>  2012-02-20 12:12:22 ---
I've potentially seen this with 3.2.1/3.2.5 (Fedora 16)

messages-20120219:Feb 16 18:11:40 laptop kernel: [688848.718886] EXT4-fs error
(device dm-1): mb_free_blocks:1348: group 28, block 924740:freeing already
freed block (bit 7236)
messages-20120219:Feb 16 18:11:40 laptop kernel: [688848.718890] EXT4-fs error
(device dm-1): mb_free_blocks:1348: group 28, block 924741:freeing already
freed block (bit 7237)
...
messages:Feb 19 04:46:02 laptop kernel: [106683.790999] EXT4-fs error (device
dm-1): ext4_mb_generate_buddy:739: group 311, 15861 clusters in bitmap, 9309 in
gd
messages:Feb 19 04:46:02 laptop kernel: [106683.874849] EXT4-fs error (device
dm-1): ext4_mb_generate_buddy:739: group 321, 30343 clusters in bitmap, 30295
in gd

but... the laptop in question is a quite dodgy hardware-wise (wiggle the case a
bit and the Thinklight blinks etc.). Typical light laptop use with root/home on
LVM the way Fedora puts them by default.

So far it's getting ext4 errors every few days, reboot & fsck and it's fine for
a while, running 3.2.6 now.

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