When you create a bcache, MAAS will always create a partition on the underlying block device IF it's the "boot device" - see bug 1509536.
When MAAS doesn't know the boot device, it falls back on the first physical block device created and assumes that is the boot device.
1) can you confirm what MAAS has listed as the physical block devices on the node?
2) Are you able to tell MAAS what the boot disk is? e.g. `maas root block-device set-boot-disk r448pr <block-device-id-of-boot-disk>`
When you create a bcache, MAAS will always create a partition on the underlying block device IF it's the "boot device" - see bug 1509536.
When MAAS doesn't know the boot device, it falls back on the first physical block device created and assumes that is the boot device.
1) can you confirm what MAAS has listed as the physical block devices on the node? device- id-of-boot- disk>`
2) Are you able to tell MAAS what the boot disk is? e.g. `maas root block-device set-boot-disk r448pr <block-