tune2fs -o journal_data_writeback /dev/sdX
tune2fs -O +has_journal /dev/sdX
e2fsck -f /dev/sdX
/some_data ext4 noatime,data=writeback,barrier=0,nobh,errors=remount-ro 1 1
tune2fs -o journal_data_writeback /dev/sdX
tune2fs -O +has_journal /dev/sdX
e2fsck -f /dev/sdX
/some_data ext4 noatime,data=writeback,barrier=0,nobh,errors=remount-ro 1 1