Re: mballoc errors

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On Wed, Mar 26, 2008 at 04:41:22PM -0500, Eric Sandeen wrote:
> This report just came in on the fedora list...
> 
> EXT4-fs error (device dm-0): ext4_mb_generate_buddy: EXT4-fs: group 717:
> 23410 blocks in bitmap, 23411 in gd
> 
> EXT4-fs error (device dm-0): ext4_mb_generate_buddy: EXT4-fs: group 721:
> 19309 blocks in bitmap, 19333 in gd
> 
> has anyone else seen this problem in testing?  I guess it means
> freespace accounting got out of sync...?
> 

The bitmap or group desc is corrupt. The number of free blocks counted
via bitmap and found via desc->bg_free_blocks_count are not same. We
fall back to one calculated the bitmap.

-aneesh
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