Values:
STATE_UNSPECIFIED (0):
This is an illegal state and should not be
encountered.
CREATING (1):
A volume for the backup was identified and
backup process is about to start.
SNAPSHOTTING (2):
The volume backup operation has begun and is
in the initial "snapshot" phase of the process.
Any defined ProtectedApplication "pre" hooks
will be executed before entering this state and
"post" hooks will be executed upon leaving this
state.
UPLOADING (3):
The snapshot phase of the volume backup
operation has completed and the snapshot is now
being uploaded to backup storage.
SUCCEEDED (4):
The volume backup operation has completed
successfully.
FAILED (5):
The volume backup operation has failed.
DELETING (6):
This VolumeBackup resource (and its
associated artifacts) is in the process of being
deleted.
