The setup is:
2 managers - M1 and M2
The scenario is:
1. Create a deployment (e.g. openstack hello world) on M1, that has an SSH key path as one of the inputs.
2. Create a snapshot.
3. Upload the snapshot to M2 and restore.
4. Try to install the deployment.
You will get something like:
This is due to the fact that we're converting paths to secrets here, and the OS plugin doesn't know how to handle this when creating keypairs (here).