psy0rz
zfs-autoverify tool
Tool to verify the actual backups by mounting the common snapshots and running rsync in verify-mode or sha256sum on the blockdevice.
This has become more urgent since a bunch of encryption bugs in ZFS have been discovered in some edge cases.
And you should offcourse always verify your backups. (although i blindly trusted zfs thus far)
the plan was to finish 3.1.x features first before new big changes, but this is more important. (and shouldnt be that difficult after some refactoring)
the alpha2 version in git is working, needs some debugging and tuning. (e.g. cleanups on ctrl-c are still messy and can leave stuff mounted/cloned)
If created a tool to generate the actual checksums: https://github.com/psy0rz/zfs_autobackup/wiki/zfs-check
zfs-autoverify will then use this tool to compare checksums. In the main time you can use zfs-check manually to check some datasets.