*** journal has been re-created - filesystem is now ext3 again ***

/dev/loop7: ***** FILE SYSTEM WAS MODIFIED *****

          11 inodes used (0.00%, out of 655360)
           0 non-contiguous files (0.0%)
           0 non-contiguous directories (0.0%)
             # of inodes with ind/dind/tind blocks: 0/0/0
             Extent depth histogram: 2
       79663 blocks used (3.04%, out of 2621440)
           0 bad blocks
           1 large file

           0 regular files
           2 directories
           0 character device files
           0 block device files
           0 fifos
           0 links
           0 symbolic links (0 fast symbolic links)
           0 sockets
------------
           2 files
root@falalala:/disaster/rec# ls
data  metadata
root@falalala:/disaster/rec# mount -t ext4 -s -o ro /dev/loop7 /tmp/lemount
root@falalala:/disaster/rec# ls -l /tmp/lemount/
total 16
drwx------ 2 root root 16384 Feb 21  2015 lost+found
root@falalala:/disaster/rec# ls -l /tmp/lemount/lost+found/
total 0
root@falalala:/disaster/rec# umount /tmp/lemount 
root@falalala:/disaster/rec# mount -t ext3 -s -o ro /dev/loop7 /tmp/lemount
mount: wrong fs type, bad option, bad superblock on /dev/loop7,
       missing codepage or helper program, or other error
       In some cases useful info is found in syslog - try
       dmesg | tail  or so

root@falalala:/disaster/rec# dmesg | tail
[1214211.387124] storvsc: Add. Sense: Invalid command operation code
[1403991.956286] JBD2: no valid journal superblock found
[1403991.956294] EXT4-fs (loop7): error loading journal
[1404183.320656] JBD2: no valid journal superblock found
[1404183.320662] EXT4-fs (loop7): error loading journal
[1405029.817496] EXT4-fs (loop7): mounted filesystem without journal. Opts: noload
[1405113.307686] JBD2: no valid journal superblock found
[1405113.307692] EXT4-fs (loop7): error loading journal
[1406141.885425] EXT4-fs (loop7): mounted filesystem with ordered data mode. Opts: (null)
[1406169.554797] EXT4-fs (loop7): couldn't mount as ext3 due to feature incompatibilities