Juju suspends models when it tries to release a locked machine in MAAS

[Junien F]

Hi,

Juju 2.9.27, MAAS 2.8.7.

If you remove a machine from a MAAS-provider model, and that machine is locked in MAAS, juju logs the following :

2022-06-21 14:24:11 WARNING juju.state modelcredential.go:53 suspending these models:
controller (34d97798-d49d-4bf7-84ca-5478cff0ca81) - prod-mymodel (4b2b10b9-30a8-48c4-8a92-6cd3f41eb7cd)
 because their credential has become invalid:
cloud denied access: You don't have the required permission to release the following machine(s): 68ab6f.

and suspends the model, even though the credentials are perfectly valid.

Juju should be able to recognize a machine locked in MAAS vs bad credentials, and notify the user appropriately.

Thanks