> For my money, "sleep 10 before checking free-space" is a more robust solution. And running more often. 50GB(?) at a time can back up any filesystem. Not to

> For my money, "sleep 10 before checking free-space" is a more robust solution. And running more often. 50GB(?) at a time can back up any filesystem. Not to mention, there is another option which perhaps better matches this use case. And author seems to be using the zfs quota property when the refquota property might better account for descendants and perhaps make a better initial calculation of what free space is available easier? ZFS is great but absolutely has tradeoffs. It makes really good choices. Maybe this is one?