inode # 45678

modes (rwxrwxrwx)

UID (owner)

file size bytes

atime (access)

ctime (metadata)
mtime (contents)

dtime (delete)

GID (group)

hard link count

data block count

file flags

direct 0

direct 1

direct 2

direct 3

direct 4

direct 5

direct 6

direct 7

direct 8

direct 9

direct 10

direct 11

indirect 12

double indirect 13

triple indirect 14

file version

file ACL

directory ACL

. . .

12 * 4KiB

= 48KiB

1024 * 4KiB

= 4MiB

1024 * 1024 * 4KiB

= 4GiB

1024 * 1024 * 1024 * 4KiB

= 4TiB (but limited to 2TiB on x86)

4 KiB data block

single indirect pointer block (1024 32-bit addresses)

double indirect pointer block (1024 32-bit addresses)

triple indirect pointer block (1024 32-bit addresses)

ext2/ext3 32-bit filesystem

Inode and metadata structure, ext2/ext3 file-system

ext2 and ext3 are 32-bit file-systems designed using a pointer structure modeled after the UNIX file-system (UFS).

Maximum sizes are constrained by the default block and sector sizes.

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