tune2fs -m 0 /dev/sdx
tune2fs 1.44.1 (24-Mar-2018)
Setting reserved blocks percentage to 0% (0 blocks)


ext4 uses extents, which improves performance when using large files and reduces metadata overhead for large files

faster fsck during boot (unallocated blocks are grouped)

file system features ( persistent pre-allocation, delayed, multi-block,  stripe-aware allocation)

xattr (user_xattr)

quota journaling