On 10/01/2010 04:28 PM, JonathanGnagy wrote:
I've got an iSCSI SAN with two controllers (IBM DS3300). Both controllers are in the same subnet (lets say 192.168.0.0/24). I have the same targets / nodes with the same IQN available on both controllers (lets say 192.168.0.2 and 192.168.0.3), but I've only figured out how to attach my servers (running CentOS 5.5) to attach to one controller at a time. I'm not using any authentication or anything, and when I run discover, I see both portals. I'd like iscsid on the servers to either load-balance or fail over from one to the other, but it's not working that way. How can I make this work?
There is not iscsi level multipath. You have to log into both portals, then use something like dm-multipath and multipath-tools (in RHEL the rpms is called device-mapper-multipath-tools) to load balance or failover across the iscsi paths.
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