The fsck Summary Message

When you run the fsck command interactively and it completes successfully, a message similar to the following is displayed:

# fsck /dev/rdsk/c0t0d0s7
** /dev/rdsk/c0t0d0s7
** Last Mounted on /export/home
** Phase 1 - Check Blocks and Sizes
** Phase 2 - Check Pathnames
** Phase 3 - Check Connectivity
** Phase 4 - Check Reference Counts
** Phase 5 - Check Cyl groups
2 files, 9 used, 2833540 free (20 frags, 354190 blocks, 0.0% fragmentation)
# 

The last line of fsck output describes the following information about the file system:

# files

Number of inodes in use

# used

Number of fragments in use

# free

Number of unused fragments

# frags

Number of unused non-block fragments

# blocks

Number of unused full blocks

% fragmentation

Percentage of fragmentation, where: free fragments x 100 / total fragments in the file system

For information about fragments, see Fragment Size.