On Fri, Jan 04, 2013 at 08:01:44AM -0500, Chris Mason wrote:
> > I'm not quite sure if the messages match the test (best guess, neighbouring
> > tests were fine):
> > 
> > [102885.667444] btrfs csum failed ino 638 off 425984 csum 1842675109 
> > private 2279232751
> > [102885.676804] btrfs csum failed ino 638 off 430080 csum 1842675109 
> > private 1192041375
> > [102885.686094] btrfs csum failed ino 638 off 434176 csum 2297282744 
> > private 1619428542
> > [102885.686103] btrfs csum failed ino 638 off 438272 csum 3709984297 
> > private 2868627320
> > [102885.686112] btrfs csum failed ino 638 off 442368 csum 1504116677 
> > private 1239355148
> > [102885.686121] btrfs csum failed ino 638 off 446464 csum 1957839041 
> > private 3848200057
> > [102885.686129] btrfs csum failed ino 638 off 450560 csum 3836729483 
> > private 2867416946
> 
> I think fsx leaves the bad file, you can test the inode number?

# btrfs inspect ino 638 /mnt/a1
/mnt/a1/junk

# md5sum /mnt/a1/junk
md5sum: /mnt/a1/junk: Input/output error

dmesg says:
[165711.839959] btrfs csum failed ino 638 off 262144 csum 3105135418 private 
2393479556
[165711.899328] btrfs csum failed ino 638 off 262144 csum 2566472073 private 
2393479556
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