[Bug 741754] Re: multipath load not balancing across two iscsi connections

[Mark Russell]

Output of `multipath -ll -v4` when "not in balance" and "balanced".

** Description changed:

  Binary package hint: multipath-tools
  
- <placeholder>
+ Details:
+ 
+ Customer is running Ubuntu Server 10.04 amd64 on ESX.
+ Connecting via open-iscsi to a Dell EqualLogic SAN. Using two paths for each LUN.
+ 
+ On startup, customer reports that the load is only going over one NIC.
+ It's appears random whether it's eth1 or eth2, but the load is never
+ distributed across both.
+ 
+ After the system is up multipath will (seeminly randomly) report one of the following:
+ - 0 devices and paths
+ - some number of devices and paths
+ - all devices and paths
+ 
+ However: multipath is not working.  Although it shows all paths after
+ they issue a `multipath -v2` they aren't all in use.  In order to make
+ them ACTIVE they need to unmount the filesystem, deactive the volume
+ group, reactivate, remount and then it works.

** Attachment added: "multipath-ll-v4-twice.txt"
   https://bugs.launchpad.net/ubuntu/+source/multipath-tools/+bug/741754/+attachment/1936758/+files/multipath-ll-v4-twice.txt

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Title:
  multipath load not balancing across two iscsi connections