While multipathing helps SRP shortcomings in many respects, including performance, it seems Windows (W2K8R2 Standard) multipathing gets very confused with >4 drives.
With 8 drives exported to Windows over SRP, without Multipath installed/configured, Windows correctly shows 8 drives and 8 duplicates, and labels the duplicates as offline. In configuring multipathing, the "MPIO Properties" dialog in the "Discover Multi-paths" tab initially shows four drives. Add those and (w/o rebooting) return to the tab shows two more; add those and return to the tab shows the last two. With all 8 added, reboot, and "Device Manager" shows 4 MPIO SRP drives (the four it showed initially in the "Discover Multi-paths" tab). Looking at the MPIO properties of two of those drives shows two paths each, the other two drives show six paths each (there are only two paths). When I try to change the "Policy" from the "Round Robin" default to "Least Queue Depth", the two drives with two paths have no issue; the two drives with six paths put up an error message that merely describes the policy, but not any error, and the change won't take. I uninstalled MPIO and reinstalled it, and the same occurred. Strangely, after the reinstall, the "Least Queue Depth" policy stuck on drives I had assigned that to before... as if the uninstall didn't clean the registry as well as it should have. Any ideas? Thanks, Chris _______________________________________________ ofw mailing list [email protected] http://lists.openfabrics.org/cgi-bin/mailman/listinfo/ofw
