tune2fs
Set the volume label:
tune2fs -L gentoo /dev/sda2
Set reserved blocks percentage for root from default 5% to 2%:
tune2fs -m 2 /dev/sda2
Display current status:
tune2fs -l /dev/sda2
Example output:
tune2fs 1.42.9 (4-Feb-2014) Filesystem volume name: <none> Last mounted on: /boot Filesystem UUID: 26302869-918a-47d8-b832-19391db8f439 Filesystem magic number: 0xEF53 Filesystem revision #: 1 (dynamic) Filesystem features: ext_attr resize_inode dir_index filetype sparse_super Filesystem flags: signed_directory_hash Default mount options: user_xattr acl Filesystem state: not clean Errors behavior: Continue Filesystem OS type: Linux Inode count: 62496 Block count: 249856 Reserved block count: 12492 Free blocks: 98501 Free inodes: 62170 First block: 1 Block size: 1024 Fragment size: 1024 Reserved GDT blocks: 256 Blocks per group: 8192 Fragments per group: 8192 Inodes per group: 2016 Inode blocks per group: 252 Filesystem created: Fri Jun 26 04:30:11 2015 Last mount time: Thu Mar 24 13:17:42 2016 Last write time: Thu Mar 24 13:17:42 2016 Mount count: 3 Maximum mount count: -1 Last checked: Sun Jan 24 11:31:11 2016 Check interval: 0 (<none>) Lifetime writes: 1592 MB Reserved blocks uid: 0 (user root) Reserved blocks gid: 0 (group root) First inode: 11 Inode size: 128 Default directory hash: half_md4 Directory Hash Seed: 3f132558-3f21-4b99-926d-55ee5ddeba4a
