A couple of changes to the apt daemon that I did a while back:
1. Kill canceled instances; we allow users to "terminate" an instance while it is booting up, but we have to pend that till the lock is released. We do this with a canceled flag, similar to the Classic interface. But I never committed the apt_daemon changes that look for canceled instances and kills them! 2. Look for stale st/lt datasets and delete them. A stale dataset is one that no longer exists at the remote cluster (cause its expiration was reached and it was reaped). We do not get notification at the Portal, and so those dangling datasets descriptors sit around confusing people (okay, confusing me and others of a similar vintage).