On Tue, 2008-01-08 at 22:45 -0600, John Valdes wrote: > In our case, I'm pretty sure it is heavy load. Well, I didn't see > what was going on at the time this started, but the targets (LUNs) > were already mounted, and we've been seeing heavy load on the DDN > recently.
Search the list archives for some patches I sent to limit the queue length under IB/srp and also to respect the targets credit limit. If you don't find them, I can forward them to you when I'm back in the office. As a quick workaround, one each host, you can add the "max_cmd_per_lun=..." parameter to your add-target string to avoid overrunning the array. Set it to floor(30 / <# of LUNs active on this IB port>) If you still have problems, try lowering it in steps of 1. This is a workaround for the initiator overrunning the credit limit, which is known to cause problems on some arrays. Perhaps it will help you. Dave _______________________________________________ general mailing list [email protected] http://lists.openfabrics.org/cgi-bin/mailman/listinfo/general To unsubscribe, please visit http://openib.org/mailman/listinfo/openib-general
