Description of problem:

When using exportfs to create an export the command will fail, but the exit code will indicate success (0).


Version-Release number of selected component (if applicable):

All versions tried exibit same behavior



How reproducible:

Always


Steps to Reproduce:


Example 1.

# exportfs non-existant-host:/mnt ; echo $? ; exportfs -v
exportfs: Failed to resolve non-existant-host
0

Example 2:

# exportfs -u 2001:470:8:d63::/64:/mnt ; echo $? ; exportfs -v
exportfs: Invalid unexporting option: 2001
0

Actual results:
echo $? = 0

Expected results:
echo $? != 0


Additional info:

This would be very helpful for users that are scripting NFS export management with exportfs so that a consistent and reliable way can be used for determining command execution results.  

The command is working as expected for other error senarios.

eg.

# exportfs -o what_root_squash non-existant-host:/mnt ; echo $? ; exportfs -v
exportfs: command line:0: unknown keyword "what_root_squash"

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