Tune2fs

Tune2fs allows you to view and set filesystem options for a specific ext2 or ext3 partition, for example the block size or the frequency of an fsck.

= Example = tweedleburg:~ # tune2fs -l /dev/sda1 tune2fs 1.40.8 (13-Mar-2008) Filesystem volume name: Last mounted on: Filesystem UUID:         a0bc0308-48b8-42fb-a1a9-c6de57d9be14 Filesystem magic number: 0xEF53 Filesystem revision #:   1 (dynamic) Filesystem features:     has_journal ext_attr resize_inode dir_index filetype needs_recovery sparse_super large_file Filesystem flags:        signed_directory_hash Default mount options:   (none) Filesystem state:        clean Errors behavior:         Continue Filesystem OS type:      Linux Inode count:             61054976 Block count:             244190000 Reserved block count:    12209500 Free blocks:             129663954 Free inodes:             60352360 First block:             0 Block size:              4096 Fragment size:           4096 Reserved GDT blocks:     965 Blocks per group:        32768 Fragments per group:     32768 Inodes per group:        8192 Inode blocks per group:  512 Filesystem created:      Sun Jul  6 22:03:27 2008 Last mount time:         Tue Sep 30 11:25:51 2008 Last write time:         Tue Sep 30 11:25:51 2008 Mount count:             45 Maximum mount count:     -1 Last checked:            Sat Jul 12 09:24:26 2008 Check interval:          0 Reserved blocks uid:     0 (user root) Reserved blocks gid:     0 (group root) First inode:             11 Inode size:              256 Journal inode:           8 First orphan inode:      6144419 Default directory hash:  tea Directory Hash Seed:     e6ba3cfa-aa30-40d7-b085-b4e5533da108 Journal backup:          inode blocks

= See also =
 * stat - view parameters like block size for a mounted file system and more
 * man page