On Fri, Apr 5, 2013 at 10:46 AM, Dimitri Maziuk <dmaziuk@xxxxxxxxxxxxx> wrote: > On 04/05/2013 12:32 PM, Gregory Farnum wrote: > ... >> Or just a VM running somewhere that's got a VPN connection to your >> room-based monitors, yes. Ceph is a strongly consistent system and >> you're not going to get split brains, period. This is the price you >> pay for that. > > Yeah, well. You are in building A talking to the servers in room A. The > building catches fire, you run over to building B and connect to the > servers in room B. Unfortunately your uplink was in A's basement, it is > now powered off and flooded, and so mon.b has no connection to > mon.in.the.cloud and your data is unreachable. > > Which means both building B and mon.in.the.cloud were a total waste of > your time and money. Obviously you would need them each to have their own independent connection, yes. I'm sorry if this aspect of the system is problematic for you, but it's pretty fundamental to any distributed or cloudy system that chooses consistency over availability. -Greg Software Engineer #42 @ http://inktank.com | http://ceph.com -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
