Accessing a storage-side snapshot of a cluster-shared volume
- by syneticon-dj
From time to time I am in the situation where I need to get data back from storage-side snapshots of cluster shared volumes. I suppose I just never figured out a way to do it right, so I always needed to:
expose the shadow copy as a separate LUN
offline the original CSV in the cluster
un-expose the LUN carrying the original CSV
make sure my cluster nodes have detected the new LUN and no longer list the original one
add the volume to the list of cluster volumes, promote it to be a CSV
copy off the data I need
undo steps 5. - 1. to revert to the original configuration
This is quite tedious and requires downtime for the original volume. Is there a better way to do this without involving a separate host outside of the cluster?