I usually do something like
teuthology-lock --list-targets --owner scheduled_sage@metropolis > /tmp/b
./cleanup-and-unlock.sh /tmp/b scheduled_sage@metropolis
It's a huge headache when some of the nodes are down, though. A better
thing would be if nuke had an --unlock option, and would continue with the
nodes that didn't error out.
But, this is still useful as is.