$ sudo tune2fs -l /dev/sdb1
tune2fs 1.40.8 (13-Mar-2008)
Filesystem volume name:   bison
Last mounted on:          <not available>
Filesystem UUID:          f92b88a3-b760-4e81-a9ac-d9fb49efb636
Filesystem magic number:  0xEF53
Filesystem revision #:    1 (dynamic)
Filesystem features:      has_journal resize_inode dir_index filetype sparse_super large_file
Filesystem flags:         signed_directory_hash
Default mount options:    (none)
Filesystem state:         clean with errors
Errors behavior:          Continue
Filesystem OS type:       Linux
Inode count:              39075840
Block count:              78142160
Reserved block count:     3907108
Free blocks:              20613050
Free inodes:              39027369
First block:              0
Block size:               4096
Fragment size:            4096
Reserved GDT blocks:      1005
Blocks per group:         32768
Fragments per group:      32768
Inodes per group:         16384
Inode blocks per group:   512
Filesystem created:       Mon Jul 14 20:18:21 2008
Last mount time:          Wed Nov 19 19:57:13 2008
Last write time:          Sun Nov 23 17:42:56 2008
Mount count:              23
Maximum mount count:      34
Last checked:             Mon Jul 14 20:18:21 2008
Check interval:           15552000 (6 months)
Next check after:         Sat Jan 10 20:18:21 2009
Reserved blocks uid:      0 (user root)
Reserved blocks gid:      0 (group root)
First inode:              11
Inode size:		  128
Journal inode:            8
Default directory hash:   tea
Directory Hash Seed:      562ab160-6c83-49f0-820f-ca156b541b50
Journal backup:           inode blocks