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tune2fs

Adjust parameters of an ext2, ext3 or ext4 filesystem. May be used on mounted filesystems.

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

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

Set the filesystem label to MY_LABEL:

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

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

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

Enable journaling for a filesystem:

tune2fs -o^{{nobarrier}} {{/dev/sdXN}}