On 11/17/12 6:58 PM, Steven Crothers wrote: > On Sat, Nov 17, 2012 at 6:23 PM, Digimer<lists at alteeve.ca> wrote: > >> >You could take two nodes, setup DRBD to replicate the data >> >(synchronously), manage a floating/virtual IP in pacemaker or rgmanager >> >and export the DRBD storage as an iSCSI LUN using tgtd. Then you can >> >migrate to the backup node, take down the primary node for maintenance >> >and restore with minimal/no downtime. Run this over mode=1 bonding with >> >each leg on two different switches and you get network HA as well. >> > > There is nothing active/active about DRBD though, it also doesn't solve the > problem of trying to utilize two heads. > > It's just failover. Nothing more. > > I'm looking for an active/active failover scenario, to utilize the multiple > physical paths for additional throughput and bandwidth. Yes, I know I can > add more nics. More nics doesn't provide failover of the physical node any sort of active-active storage system has difficult issues with concurrent operations ... -- john r pierce N 37, W 122 santa cruz ca mid-left coast