@Stevek Re:
We now have at least one of the issues address as a result of this thread and your & @Hooverdan perseverance :).
See:
In that release we now have the official variant of @Hooverdan ‘force’ flag implementation, given we know we are cascading our snapshots in the replication setup.
So thus-far we may still have an issue with the newer kernels re changed behaviour on quotas. Notes on this in the above release notes.
Thanks again for your invaluable input here, the quota issue is still open as I’ve yet to get a reproducer. Likely it requires a certain quota payload that was not evident in my current test machines. And without a reproducer I could not approach a fix, and so moved onto the force flag issue. But bit by bit.
Hope that helps.