Re: [PATCH 1/1] um: ubd: Fix data corruption

[Chris Frey <cdfrey@foursquare.net>]

On Tue, Oct 05, 2010 at 10:23:19AM +0200, Tejun Heo wrote:
> Hmmmm, can you please give a shot at the following one?  Thank you.

I applied this patch on top of stock 2.6.35.5 as usual (no other patches)
and tested on my maverick image as before.  I ran a fsck.ext3 on the
filesystem image from the host before my test, just to make sure, and
there were no errors.

Unfortunately, this patch does not fix the issue either.  I get errors
in the guest like the following:

EXT3-fs error (device ubda): htree_dirblock_to_tree: bad entry in directory #1137497: rec_len is smaller than minimal - offset=0, inode=0, rec_len=0, name_len=0
EXT3-fs (ubda): warning: empty_dir: bad directory (dir #1137497) - no `.' or `..'
EXT3-fs error (device ubda): htree_dirblock_to_tree: bad entry in directory #1137587: rec_len is smaller than minimal - offset=0, inode=0, rec_len=0, name_len=0
EXT3-fs (ubda): warning: empty_dir: bad directory (dir #1137587) - no `.' or `..'
EXT3-fs error (device ubda): htree_dirblock_to_tree: bad entry in directory #1137619: rec_len is smaller than minimal - offset=0, inode=0, rec_len=0, name_len=0
EXT3-fs (ubda): warning: empty_dir: bad directory (dir #1137619) - no `.' or `..'
EXT3-fs error (device ubda): htree_dirblock_to_tree: bad entry in directory #1137532: rec_len is smaller than minimal - offset=0, inode=0, rec_len=0, name_len=0
EXT3-fs (ubda): warning: empty_dir: bad directory (dir #1137532) - no `.' or `..'
EXT3-fs (ubda): warning: ext3_rmdir: empty directory has nlink!=2 (6)
EXT3-fs (ubda): warning: ext3_rmdir: empty directory has nlink!=2 (3)


And later on:

EXT3-fs error (device ubda): ext3_lookup: deleted inode referenced: 867196
EXT3-fs error (device ubda): ext3_lookup: deleted inode referenced: 484932
EXT3-fs error (device ubda): ext3_lookup: deleted inode referenced: 484932


- Chris