Boot from Volume invalid BDM

[Logan V]

Booting from volume in the new launch panel causes the following BDM:
{"server": {"name": "test", "imageRef": "", "availability_zone
  ": "us-dfw-1", "key_name": "test", "flavorRef": "9340639a-2883-48ca-811f-01519e527648", "block_device_mapping": [{"volume_id": "94426a92-5409-428d-8a26-81f94395d9ad", "delete_on_termination": "false", "device_name": "sda"}], "OS-DCF:diskConfig": "AUTO", "max_count": 1, "min_count": 1, "networks": [{"uuid
  ": "82ac236e-384a-420b-aa2c-3003f44cf782"}], "security_groups": [{"name": "4df780bf-b2c5-4c0e-acba-64b9b2f08eaa"}]}}

Nova rejects it with:
{"badRequest": {"message": "Block Device Mapping is Invalid: Boot sequence for the instance and image/block device mapping combin
  ation is not valid.", "code": 400}}}

It seems like it is missing a boot_index?

[Liyingjun (liyingjun)]

Can't reproduce with the latest master

[Logan V (loganv)]

Sorry I forgot to state, I am seeing this on Newton.