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Mike Hibler authored
Since GUIDs are 16 bytes and our current interface MACs are only 12 bytes, I agonized over whether to grow the mac column to 16 bytes and just treat it as a unique identifier (which is all we use that column for anyway). However, in the end I just added a new guid column as there were mac columns in a variety of other tables and it wasn't clear what the relationship was and what I might break. So, the newnode MFS will now report back a GUID for interfaces it recognizes as IB (FreeBSD-specific right now). The boss-side checkin code with stash that value in new_interfaces (and later interfaces when added). For possible backward compat, it will also generate a MAC address from that (possibly Mellanox-specific) so that all entries in the interfaces table will have a MAC (yes, it should really be the other way around--all interfaces should always have a guid). End of story. We don't do anything else with IB right now other than stash an interface GUID.
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