Right now, check_all_disk_space is available by direct download from the project's main repo on Github.
https://github.com/jimsalterjrs/sanoid/blob/master/check_all_disk_space
It should be available as part of the main package at some point later this year--I think we're about a month or two away from needing to have our annual PR-fest and major release.
Distributions generally pick up and package new major releases fairly soon after they drop.
Thanks y'all!
Edited 3d ago