Thanks for the quick reply.
We looked at the ZFS snapshot + copy --refresh approach first, but we need encrypted disks on IncusOS and LINSTOR doesn’t work with encrypted ZFS pools, so we went LUKS (encrypt-drive) → LVM thin → LINSTOR instead.
So we’re stuck without that ZFS send path. We also tried LINSTOR’s S3 remote (linstor backup create to Wasabi): remote create and the local snapshot are fine, but shipping fails on the IncusOS satellite with a Java TLS error (empty trust store / cacerts). Before we hack around that, is the near-term recommendation a backup vendor / BareOS against the Incus APIs, or is there anything sane for LVM-thin/LINSTOR volumes (including getting LINSTOR → S3 working on IncusOS)?