The Disk-Layout Of A STAMFS Inode

• The inode contains info such as last update/change/access time, data blocks size, index of the logical disk block with the data block index, etc.
• The data block index contains a mapping between logical block numbers in the inode, and logical blocks on disk.
• Entry 0 contains the number of the disk block whose contents is in block 0 of the file (bytes 0-1023).
• Each entry in this index is 4 bytes long.
• Thus, an inode (i.e. a file) on a STAMFS system is limited to 1024/4 (=256) sectors, or 128KB, of data

Originally written by guy keren