NetApp: Unable to resize volume – error: Volume has the fixed filesystem size option set

Sometimes you are unable to resize a NetApp volume. Usually this is because the volume used to be a snapmirror destination, and it was broken off – but it also could have been some cursed sysadmin that preceded you. At any rate, when you attempt to resize the volume, you’re given this error:

“Volume has the fixed filesystem size option set.”
Well, NetApp doesn’t have a checkbox for that in the GUI. But, you should be using the command line anyway 🙂
Here is the command to fix it:
Cluster Mode:
cluster::> volume modify -filesys-size-fixed false -volume <volumename>
vol options <volumename> fs_size_fixed off