Re: [dm-devel] EXT4-fs error (device dm-42): ext4_mb_generate_buddy:741:group 1904, 32254 clusters in bitmap, 32258 in gd
From: Kees Cook
Date: Thu Jun 07 2012 - 18:40:38 EST
On Thu, Jun 7, 2012 at 3:27 PM, djwong <djwong@xxxxxxxxxx> wrote:
> On Thu, Jun 07, 2012 at 12:27:56AM -0400, Ted Ts'o wrote:
>> I think this patch should fix things. Could you give it a try (after
>> re-enabling uninit_bg and then running e2fsck on the file systems)?
>>
>> Many thanks,
>>
>> - Ted
>>
>> commit b6b218940d47f20fc14e4d203930c575be0c65bf
>> Author: Theodore Ts'o <tytso@xxxxxxx>
>> Date: Thu Jun 7 00:26:56 2012 -0400
>>
>> ext4: fix the free blocks calculation for ext3 file systems w/ uninit_bg
>>
>> Ext3 filesystems that are converted to use as many ext4 file systems
>> as possible
>
> Just to clarify the description a bit:
>
> Did you mean "..as many ext4 filesystem _features_ as possible" ?
>
>> will enable uninit_bg to speed up e2fsck times. File
>> systems with an native ext3 layout of inode tables and block
>
> Perhaps "On file systems with a native ext3 layout..." ?
FWIW, I was building the filesystem that triggered this as ext4:
mkfs.ext4 -T default -m 0 -O ^huge_file,^flex_bg -E
discard,lazy_itable_init /dev/mapper/...
-Kees
--
Kees Cook
Chrome OS Security
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