ext4 minimum partition size , ext4 최소 크기

출처 : http://www.linuxquestions.org/questions/linux-general-1/minimum-partition-size-946423/

결론은 2M 부터 가능

• Try smaller and smaller sizes until you find the limit. This will be tedious---at least using fdisk, I can't create a new partition and install a file system without rebooting

• $ dd if=/dev/zero of=disk-image count=4096
  4096+0 records in
  4096+0 records out
  2097152 bytes (2.1 MB) copied, 0.0406892 s, 51.5 MB/s
  $ ls -l disk-image
  -rw-r--r--. 1 colucix users 2097152 May 24 12:04 disk-image
  $ /sbin/mkfs -t ext4 -q disk-image
  disk-image is not a block special device.
  Proceed anyway? (y,n) y
  $ file disk-image 
  disk-image: Linux rev 1.0 ext4 filesystem data (extents) (huge files)

• The limit of an ext4 filesystem should be 4096 blocks of 512 bytes, that is about 2 Mb. It depends on the minimum size to store the filesystem journal, other than inode and superblock sizes that are smaller. This is from a theoretical point of view, since - as already pointed out - a physically minimum filesystem is not usable.