# resize2fs > Resize an ext2, ext3 or ext4 filesystem. > Does not resize the underlying partition, and the filesystem must be unmounted. - Automatically resize a filesystem: `resize2fs {{/dev/sdXN}}` - Resize the filesystem to a size of 40G, displaying a progress bar: `resize2fs -p {{/dev/sdXN}} {{40G}}` - Shrink the filesystem to its minimum possible size: `resize2fs -M {{/dev/sdXN}}`