5. Crash and File System Consistency:

a. Fsck is the Unix file system crash recovery program. For each of the following fsck error messages, what do you believe fsck has seen in the crashed file system to generate the error message:

i. Files inode link count is 1, should be 2.

ii. Free bitmap entry for block 3323 is 0, should be 1 (allocated).

iii. Cylinder group 4 -? free block count is incorrect.

b. Which of the following conditions would likely represent a serious problem with a file system (Justify answer for each.)

i. A write to a data block that contains no on-?disk inodes pointing at it.

ii. A write to a data block that contains multiple on-?disk inodes pointing at it.

iii. A write to a data block that is marked as free in the on-?disk bitmap.