Yeah, we know about the ZFS encryption with send/receive bug, it's frustrating our attempts to get really nice HA support on our logging system... but so far it appears that just deleting the offsending snapshot and creating a new one works, and we're funding some research into the issue as well.

This is the current script - it runs every minute for each pool synced between the two log servers: https://gist.github.com/brong/6a23fee1480f2d62b8a18ade5aea66...