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First let me thank you all for having such a nice iSCSI initiator. I am using FC 2 with a 2.6.7 kernel and linux-iscsi 18.104.22.168.
I have a SANRAD V-Switch 3000 with 2 ethernet portals eth1: 10.10.70.200 eth2: 10.10.71.200
On my Linux box I have 2 x 1GB NICs: 10.10.70.100 and 10.10.71.100
I have them connected directly (with 2 x CAT6 cables) and it doesn’t appear to matter whether I use a normal or ???? ethernet cable.
I am able to ping both ports on the V-Switch 3000 just fine. If I just have a simple iscsi.conf file describing either one of the two portals, I can mount the volumes I’ve made and run bonnie++ for results just fine. But I’d like to know how to change the configuration file to support improved failover and throughput using both ports. What would my iscsi.conf look like? I tried something like this:
My system sees only one device (which I suppose is good) despite the two paths. But during my bonnie++ testing, it looks like it uses the 10.10.70.200 portal almost exclusively, with very occasional uses of 10.10.71.200. My expectation (if I had this setup correctly) would be that both ports would be going at the same time. Now I know I didn’t include anything about using any multi-path or failover stuff, but that’s because when I added that stuff, I didn’t get any better results. The only difference was a situation where the system as a whole would lockup if I was using some of the portals stuff.
Anyway, could someone calibrate me on my expectation of the linux-iscsi driver’s multi-path configuration and what the multi-path activity should look like?
BTW, for anyone interested, bonnie reports getting 82MB/s over my single 1GB connection. I’d love to report my multiple portal rate when solved.
Thanks for your help,
Daniel J. Levine
Applied Physics Laboratory
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