On Thu, Jul 11, 2024 at 11:44:08AM -0300, Fabiano Rosas wrote: > But of course, that means we cannot claim to support all kinds of > forward migrations anymore. Only those in the 6 year period. That "6 years" comes from machine type deprecation period, and migration compatibility is mostly only attached to machine types, and we only ever allowed migration with the same machine type. It means, >6 years migration will never work anyway as soon as we start to deprecate machine types (irrelevant of any reuse of UNUSED), because the >6 years machine types will simply be gone.. See configuration_post_load(), where it'll throw an error upfront when machine type mismatched. -- Peter Xu
