Linux Ext2 filesystem

The limits for Linux Ext2 filesystems include:

Filename length

255 bytes.

Pathname length

1024 bytes, not including the mountpoint or the terminating NUL.

Block size

1 KB − 4 KB.

File size

16 GB − 2 TB, depending on the block size.

Directory size

16 GB − 2 TB, depending on the block size; directories are files with inode and filename information as data.

Filesystem size

4 TB − 16 TB.

Disk size

2⁶⁴ bytes; limited by the disk driver.