Extended File System

Links

• ext4.wiki.kernel.org
• Ext4 and block sizes

FAQ

Reserved space

• https://ma.ttias.be/change-reserved-blocks-ext3-ext4-filesystem-linux/

Check reserved space

tune2fs -l /dev/partition  | grep 'Reserved'

Remove reserved space

tune2fs -r 0 /dev/sdd1

Reduce reserved space

Set to 1%

tune2fs -m 1 /dev/sdd1

Grow to partition size

Simply

resize2fs /dev/sdc1

Check minimum size for resize2fs

resize2fs -P /dev/sdc1

gives you the number of (usually 4096 byte) blocks