Hi, Am Fri, 25 Oct 2013 10:34:50 +0200 schrieb Michael Schwartzkopff <[email protected]>: > In DRBD you can add a option to limit the sync rate. So there will be > enough bandwith left for corosync.
As far as I remember, the syncer-rate only limits the sync-traffic, that is when one side was down/disconnected and is up again and getting the changes transfered in bulk. You would limit that so that normal disk-access (which is always as fast as possible) has a chance to continue while syncing. And because you normally sync on cluster-/node-startup when its more critical corosync can communicate. > If you do not want to add new cable, you can use VLANs. On the > switches add QoS policies to make sure that the corosync VLAN gets a > guaranteed bandwidth. Probably the same QoS has to be applied on the cluster-nodes as you also want this applied when sending packets. Have fun, Arnold
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