On Fri, Aug 28, 2009 at 5:40 AM, Theodore Tso[off-list ref] wrote:

Um, that's interesting.  What happens if run fsck.ext4 twice?  i.e:

Here's what happens with an immediate fsck after the first one.
Again, if I don't create the directories, there are no errors.

# fsck.ext4 -C0 -fy /dev/md0
e2fsck 1.41.8 (20-Jul-2009)
One or more block group descriptor checksums are invalid.  Fix? yes

Group descriptor 0 checksum is invalid.  FIXED.
Group descriptor 1 checksum is invalid.  FIXED.
Group descriptor 2 checksum is invalid.  FIXED.
Group descriptor 3 checksum is invalid.  FIXED.
Pass 1: Checking inodes, blocks, and sizes
Pass 2: Checking directory structure
Pass 3: Checking directory connectivity
Pass 4: Checking reference counts
Pass 5: Checking group summary information
/dev/md0: 16/365234176 files (0.0% non-contiguous), 23315701/5843746816 blocks
# echo $?
0
# fsck.ext4 -C0 -fy /dev/md0
e2fsck 1.41.8 (20-Jul-2009)
One or more block group descriptor checksums are invalid.  Fix? yes

Group descriptor 1 checksum is invalid.  FIXED.
Pass 1: Checking inodes, blocks, and sizes
Pass 2: Checking directory structure
Pass 3: Checking directory connectivity
Pass 4: Checking reference counts
Pass 5: Checking group summary information
/dev/md0: 16/365234176 files (0.0% non-contiguous), 23315701/5843746816 blocks
# echo $?
0

-Justin
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