[one-users] iSCSI multipath

Ruben S. Montero rsmontero at opennebula.org
Mon Feb 4 14:52:42 PST 2013

> The other thing with the ONE/lvm driver is that it makes a snapshot in the
> clone script, while our driver makes a new clone LV. I tried to use the
> original LVM driver, and every time, I deployed a new VM, I got this error
> message:
> lv-one-50 must be active exclusively to create snapshot
Just copying from the original versions of the LVM driver [1].

"The workaround is to create a cluster aware normal partition in LVM
intended for Copy-On-Write purposes. This partition can be enabled
exclusively on the worker node and mapped together with the base (cluster
aware) virtual machine image to a local snapshot with 'dmsetup'. When
modifications have to be stored after a shutdown of the virtual machine, it
is sufficient to remove the mapping and synchronize (i.e. disable) the
cluster aware Copy-On-Write partition. "

You may want to take a look to the iscsi-v2.tar.gz and the clone scripts in

Hope it helps

[1] http://dev.opennebula.org/issues/32
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