fsck_vxfs sanity check

The -m option of fsck(1M) is used by mountall(1M) to determine if filesystems need to be checked before they can be mounted.

The vxfs-specific fsck(1M) checks for a valid superblock to see if the filesystem is in the CLEAN state. The checks are performed differently for the root filesystem and for other filesystems. In all cases, a message is displayed on standard error output, and the program terminates with an exit code. If the filesystem is not mounted as the root filesystem, the exit codes are:

0

The filesystem is clean.

32

The filesystem needs checking.

33

The filesystem is already mounted.

34

There was an error when attempting to access the filesystem.

0

The root filesystem is mounted read-only and is clean, or the root filesystem is mounted read/write (and is therefore clean).

32

The root filesystem is mounted read-only and needs checking.

34

There was an error when attempting to access the filesystem.