Picture a gigabit card failing in one of the systems in a cluster, so the secondary interface of the single-mode trunk (in the same system) takes over from it. Now the partner server fails.... Where is its gigabit interface going to go on the survivor (which is down to its last NIC)? Oh dear....
I don't really see the big problem with that.. You're basically saying that if a NIC group is running in degraded mode, and has no spares, that an additional failure would result in unavailability.. Sounds alot like another scenario that's already been addressed :)
All the clever thigns the toaster could to accomodate nic failures in a clustered pair (doing things like splitting up vif's to accomodate a dead partner) is forcing me back to rtfm.. I'd be interested to see what kinds of neat things people have inplemented in this case. (my cluster is so bland and underutilized that I've got to find something more fun for it to do)..
..kg..