model will not migrate - volumeAttachmentPlanInfo schema check failed

[james beedy]

Trying to migrate a model that houses an application which uses juju storage, I get this message telling me that model migration was aborted:

migrating: aborted, removing model from target controller: model data transfer failed, failed to import model into target controller: volumes: volume 0: volumeAttachmentPlan 0: volumeAttachmentPlanInfo schema check failed: volumePlanInfo schema check failed: device-attributes: expected map, got nothing

juju status - https://paste.ubuntu.com/p/qRypk2M36z/

Here is another juju status from another model with applications using juju storage - https://paste.ubuntu.com/p/nB4xRhkQs4/

Not really sure if there is anything I can provide that may lend further insight, or if this is just the current state of model migrations?

thanks

[Joseph Phillips (manadart)]

This appears to be an omission from the juju/description logic.

For that type, defaults need to be supplied with "schema.Omit" when coercing fields that have "omitempty" tags.

[Joseph Phillips (manadart)]

Proposed for 2.6:
https://github.com/juju/juju/pull/10417

[Joseph Phillips (manadart)]

And into develop with:
https://github.com/juju/juju/pull/10425