tldr/pages/linux/tune2fs.md

tune2fs

Adjust parameters of an ext2, ext3, or ext4 filesystem. May be used on mounted filesystems. More information: https://manned.org/tune2fs.

• Set the max number of counts before a filesystem is checked to 2:

sudo tune2fs -c 2 {{/dev/sdXN}}

• Set the filesystem label to MY_LABEL:

sudo tune2fs -L 'MY_LABEL' {{/dev/sdXN}}

• Enable discard and user-specified extended attributes for a filesystem:

sudo tune2fs -o discard,user_xattr {{/dev/sdXN}}

• Enable journaling for a filesystem:

sudo tune2fs -o has_journal {{/dev/sdXN}}

• Assign a new randomly-generated UUID to a filesystem:

sudo tune2fs -U random {{/dev/sdXN}}