NFS fails after the directory of an overridden repo is moved/removed

[jsingle]

As an optimization, we're not removing entries from /etc/exports in some cases when folders are changed. This causes the NFS server to fail when an entry is specified that no longer exists. We may want to rethink the need for this optimization

[thieman]

Looking at the code, it seems like this would resolve itself on dusty up since we reconfigure /etc/exports from scratch at that time. If that's accurate, that seems fine to me since there are already plenty of config changes that require you to up for them to take effect. Moving a repo Dusty is using is obviously going to break things, but if we recover during an up then I don't think we need to do anything further. Motion to close if this is actually how the NFS functionality works.