> 25.02.2011 00:08, Serge Dubrouski wrote: >> I wonder if that would be possible to make Pacemaker to move virtual >> IP from one interface to another (not from one node to another) using >> an RA like this one. > > I just use STP-enabled bridge for this purpose. All ports except one are > blocked by STP until failure of that port.
And I needed this RA for directly opposite task: prevent resources from run on node where aggregate speed of interfaces below such bridge will not allow to satisfy SLA (if 10Gbps interface fails, then I cannot provide iSCSI service with needed peak speed). BTW, another possibility for your task (with some limitations) is active-passive bonding. I use it also, but only for back-to-back connection between servers. This bond interface consists of one back-to-back 10Gbps and vlan (surprise-surprise, it works) over another 10Gbps which goes through switch stack and which is used (another vlan) for iSCSI exports. This bond is actually used as a corosync ring. corosync is fine with such network setup and failover is really quick. Although this doesn't prevent problems when someone puts back-to-back iface down on one node (another node doesn't aware of this because lower-layer link is actually does not go down and iface is UP,LOWER_UP there), but works well when back-to-back cable is unplugged. Best, Vladislav _______________________________________________ Pacemaker mailing list: [email protected] http://oss.clusterlabs.org/mailman/listinfo/pacemaker Project Home: http://www.clusterlabs.org Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf Bugs: http://developerbugs.linux-foundation.org/enter_bug.cgi?product=Pacemaker
