> 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 it. Hope it helps [1] http://dev.opennebula.org/issues/32
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