mkfs.ext4 for large file drives

format_hdd.sh

#!/bin/sh
if [[ $UID -ne 0 ]]; then
  echo "$0 must be run as root."
  exit 1
fi
if [[ $# -ne 2 ]]; then
  echo "Invalid number of arguments."
  echo "Usage: $0 BLK_DEV LABEL"
  exit 2
fi
if [[ -e $1 ]]; then
  echo "File $1 does not exist."
  exit 3
fi
if [[ -b $1 ]]; then
  echo "File $1 is not a block device."
  exit 4
fi
mkfs.ext4 -I 256 -b 4096 -L $2 -O has_journal,ext_attr,sparse_super,resize_inode,dir_index,filetype,extent,flex_bg,large_file,huge_file,uninit_bg,dir_nlink,extra_isize $1
tune2fs -m 0.0 $1
fsck -fDp $1