def check_attach(self, context, volume, instance=None):
# TODO(vish): abstract status checking?
if volume['status'] != "available":
msg = _("volume '%(vol)s' status must be 'available'. Currently "
"in '%(status)s'") % {
'vol': volume['id'],
'status': volume['status']
}
raise exception.InvalidVolume(reason=msg)
if volume['attach_status'] == "attached":
msg = _("volume %s already attached") % volume['id']
raise exception.InvalidVolume(reason=msg)
if instance and not CONF.cinder.cross_az_attach:
# NOTE(sorrison): If instance is on a host we match against it's AZ
# else we check the intended AZ
if instance.get('host'):
instance_az = az.get_instance_availability_zone(
context, instance)
else:
instance_az = instance['availability_zone']
if instance_az != volume['availability_zone']:
msg = _("Instance %(instance)s and volume %(vol)s are not in "
"the same availability_zone. Instance is in "
"%(ins_zone)s. Volume is in %(vol_zone)s") % {
"instance": instance['id'],
"vol": volume['id'],
'ins_zone': instance_az,
'vol_zone': volume['availability_zone']
}
raise exception.InvalidVolume(reason=msg)
def check_attach(self, context, volume, instance=None):
if volume['status'] != 'available':
msg = "status must be available"
msg = "%s" % volume
raise exception.InvalidVolume(reason=msg)
if volume['attach_status'] == 'attached':
msg = "already attached"
raise exception.InvalidVolume(reason=msg)
if instance and not CONF.cinder.cross_az_attach:
if instance['availability_zone'] != volume['availability_zone']:
msg = "Instance and volume not in same availability_zone"
raise exception.InvalidVolume(reason=msg)
def check_attached(self, context, volume):
if volume['status'] != "in-use":
msg = _("volume '%(vol)s' status must be 'in-use'. Currently in "
"'%(status)s' status") % {
"vol": volume['id'],
"status": volume['status']
}
raise exception.InvalidVolume(reason=msg)
def get_by_volume_id(cls,
context,
volume_id,
instance_uuid=None,
expected_attrs=None):
if expected_attrs is None:
expected_attrs = []
db_bdm = db.block_device_mapping_get_by_volume_id(
context, volume_id, _expected_cols(expected_attrs))
if not db_bdm:
raise exception.VolumeBDMNotFound(volume_id=volume_id)
# NOTE (ndipanov): Move this to the db layer into a
# get_by_instance_and_volume_id method
if instance_uuid and instance_uuid != db_bdm['instance_uuid']:
raise exception.InvalidVolume(
reason=_("Volume does not belong to the "
"requested instance."))
return cls._from_db_object(context,
cls(),
db_bdm,
expected_attrs=expected_attrs)
def check_detach(self, context, volume):
if volume['status'] == "available":
msg = "already detached"
raise exception.InvalidVolume(reason=msg)
def check_detach(self, context, volume):
# TODO(vish): abstract status checking?
if volume['status'] == "available":
msg = _("volume %s already detached") % volume['id']
raise exception.InvalidVolume(reason=msg)