During dry runs, query pool.dataset.query on the destination to verify that
every share path would have a backing ZFS dataset. Missing paths are collected
in Summary.missing_datasets and surfaced as a WARNING block in the report.
In interactive mode the user is prompted to create any auto-creatable
(/mnt/…) datasets before the live migration proceeds. Non-interactive
--dry-run mode prints the same warning in the summary report.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
