ACTIVE = 'active' # VM is running
BUILDING = 'building' # VM only exists in DB
PAUSED = 'paused'
SUSPENDED = 'suspended' # VM is suspended to disk.
STOPPED = 'stopped' # VM is powered off, the disk image is still there.
RESCUED = 'rescued' # A rescue image is running with the original VM image
# attached.
RESIZED = 'resized' # a VM with the new size is active. The user is expected
# to manually confirm or revert.
SOFT_DELETED = 'soft-delete' # VM is marked as deleted but the disk images are
# still available to restore.
DELETED = 'deleted' # VM is permanently deleted.
ERROR = 'error'
SHELVED = 'shelved' # VM is powered off, resources still on hypervisor
SHELVED_OFFLOADED = 'shelved_offloaded' # VM and associated resources are
# not on hypervisor
ALLOW_SOFT_REBOOT = [ACTIVE] # states we can soft reboot from
ALLOW_HARD_REBOOT = ALLOW_SOFT_REBOOT + [STOPPED, PAUSED, SUSPENDED, ERROR]
# states we allow hard reboot from
ALLOW_TRIGGER_CRASH_DUMP = [ACTIVE, PAUSED, RESCUED, RESIZED, ERROR]
# states we allow to trigger crash dump
ALLOW_RESOURCE_REMOVAL = [DELETED, SHELVED_OFFLOADED]
# states we allow resources to be freed in
task_states : vm_state에 비해 좀더 과도적인(?) 상태 반영
/usr/lib/python2.7/dist-packages/nova/compute/task_states.py
# possible task states during create()
SCHEDULING = 'scheduling'
BLOCK_DEVICE_MAPPING = 'block_device_mapping'
NETWORKING = 'networking'
SPAWNING = 'spawning'
# possible task states during snapshot()
IMAGE_SNAPSHOT = 'image_snapshot'
IMAGE_SNAPSHOT_PENDING = 'image_snapshot_pending'
IMAGE_PENDING_UPLOAD = 'image_pending_upload'
IMAGE_UPLOADING = 'image_uploading'
# possible task states during backup()
IMAGE_BACKUP = 'image_backup'
# possible task states during set_admin_password()
UPDATING_PASSWORD = 'updating_password'
# possible task states during resize()
RESIZE_PREP = 'resize_prep'
RESIZE_MIGRATING = 'resize_migrating'
RESIZE_MIGRATED = 'resize_migrated'
RESIZE_FINISH = 'resize_finish'
# possible task states during revert_resize()
RESIZE_REVERTING = 'resize_reverting'
# possible task states during confirm_resize()
RESIZE_ConFIRMING = 'resize_confirming'
# possible task states during reboot()
REBOOTING = 'rebooting'
REBOOT_PENDING = 'reboot_pending'
REBOOT_STARTED = 'reboot_started'
REBOOTING_HARD = 'rebooting_hard'
REBOOT_PENDING_HARD = 'reboot_pending_hard'
REBOOT_STARTED_HARD = 'reboot_started_hard'
# possible task states during pause()
PAUSING = 'pausing'
# possible task states during unpause()
UNPAUSING = 'unpausing'
# possible task states during suspend()
SUSPENDING = 'suspending'
# possible task states during resume()
RESUMING = 'resuming'
# possible task states during power_off()
POWERING_OFF = 'powering-off'
# possible task states during power_on()
POWERING_ON = 'powering-on'
# possible task states during rescue()
RESCUING = 'rescuing'
# possible task states during unrescue()
UNRESCUING = 'unrescuing'
# possible task states during rebuild()
REBUILDING = 'rebuilding'
REBUILD_BLOCK_DEVICE_MAPPING = "rebuild_block_device_mapping"
REBUILD_SPAWNING = 'rebuild_spawning'
# possible task states during live_migrate()
MIGRATING = "migrating"
# possible task states during delete()
DELETING = 'deleting'
# possible task states during soft_delete()
SOFT_DELETING = 'soft-deleting'
# possible task states during restore()
RESTORING = 'restoring'
# possible task states during shelve()
SHELVING = 'shelving'
SHELVING_IMAGE_PENDING_UPLOAD = 'shelving_image_pending_upload'
SHELVING_IMAGE_UPLOADING = 'shelving_image_uploading'
# possible task states during shelve_offload()
SHELVING_OFFLOADING = 'shelving_offloading'
# possible task states during unshelve()
UNSHELVING = 'unshelving'
ALLOW_REBOOT = [None, REBOOTING, REBOOT_PENDING, REBOOT_STARTED, RESUMING,
REBOOTING_HARD, UNPAUSING, PAUSING, SUSPENDING]
참조 :
