Hi, During the testing that I am doing, I run into a bottleneck when I run I/O to more than 1 device at the same time.
In my current test configuration, I have the following setup: Target server has MegaRaid with 2 RAID 1E devices, which are mapped through lvm into large and small LUNs. 4 LUNs are made available for each RAID 1E devices through 2 instances of tgtd. Small LUNs are on control-port 0 and large LUNs on control-port 1, which are mapped to separate nic ports (10GbE each). Initiator server had no problem discovery each of the portals and is running I/O to 1 large LUN and 1 small LUN, which should separate all traffic. I'm using iozone to generate the traffic on both LUNs. What I am seeing is that I/O starts on 1 LUN and appears to wait until the data file has been completely written and read on that LUN before starting on the next. Is it possible that this is really happening in this manner? Thanks, Frank -- You received this message because you are subscribed to the Google Groups "open-iscsi" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/open-iscsi?hl=en.
