Operating systems Three Easy Pieces: Chapter 41 solution

Question 1

-L 4 spreads out the file.

Question 2

-L 30 gives same result as without -L flag because each group can have at most 30 data blocks.

Question 3

Filespan should decrease as -L increase up to 30.

Question 4

Three groups should be used for the three directories.

Question 5

It does pretty well. Can’t get better if inodes and data blocks are kept separate.

Question 6

dirspan is affected badly. Besides a lot of data blocks in every group stays unused because small files.

Question 7

This policy is better for dirspan because it prevents from another directory from getting in between a directory and its file inodes.

Question 8

i is spread out in fragments.

Question 9

filspan and dirspan is increased. But blocks of a file stays together.