illumos gate

The problem is sharemgr (or libshare, perhaps). When the nfs/server start method does 'sharemgr start -P nfs -a', it really does start sharing all shares on NFS. sharemgr seems convinced that something else is doing the "is this share appropriate to this protocol" check, but nothing that I can find is. libshare probably shouldn't, as from its point of view it's being asked to share 'foo' on NFS, and is just doing so. It seems that sharemgr should be where this is actually checked.

The most conservative place to check would be sa_enable_group before adding to worklist, less conservative places in descending order are enable_all_groups and enable_group, the latter may not actually catch every case.

It seems like enable_group should get a has_protocol() check similar to disable_group's.
I'm not sure if that's sufficient (can protocols be set at the share level, rather than the group?)