- # This is always safe to do, as we can't acquire more/less locks than
- # what was requested.
- lu.acquired_locks[level] = self.context.glm.acquire(level,
- needed_locks,
- shared=share)
+ if acquiring_locks:
+ needed_locks = lu.needed_locks[level]
+ lu.acquired_locks[level] = self.context.glm.acquire(level,
+ needed_locks,
+ shared=share)
+ else: # adding_locks
+ add_locks = lu.add_locks[level]
+ lu.remove_locks[level] = add_locks
+ try:
+ self.context.glm.add(level, add_locks, acquired=1, shared=share)
+ except errors.LockError:
+ raise errors.OpPrereqError(
+ "Coudn't add locks (%s), probably because of a race condition"
+ " with another job, who added them first" % add_locks)