Ethan John wrote: > Thanks for the heads-up about ALUA. We're looking into it. > > What is the purpose of the custom mpio_prio_* applications that ship > with open-iscsi if not to handle multipathing? > It is. mpath_prio_* are the priority callouts for multipathing. They determine the layout of the multipath map. Theory is that mpath_prio_* will return the priority for a given path in relation to the entire multipath layout. If used with 'group_by_prio' all paths with the same priority will be grouped into one multipath group, and the group with the highest priority will become active. When all paths in a group fail, the group with the next highest priority will become active. Additionally some failover command (as determined by the hardware handler) may be send to the target. Cheers, Hannes -- Dr. Hannes Reinecke zSeries & Storage hare@xxxxxxx +49 911 74053 688 SUSE LINUX Products GmbH, Maxfeldstr. 5, 90409 Nürnberg GF: Markus Rex, HRB 16746 (AG Nürnberg) -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
