def execute(self):
"""Map the instance's boot disk and discover it."""
# Search for boot disk on the NovaLink partition
if self.disk_dvr.mp_uuid in self.disk_dvr.vios_uuids:
dev_name = self.disk_dvr.get_bootdisk_path(self.instance,
self.disk_dvr.mp_uuid)
if dev_name is not None:
return None, None, dev_name
self.stg_elem, self.vios_wrap = (
self.disk_dvr.connect_instance_disk_to_mgmt(self.instance))
new_maps = pvm_smap.find_maps(self.vios_wrap.scsi_mappings,
client_lpar_id=self.disk_dvr.mp_uuid,
stg_elem=self.stg_elem)
if not new_maps:
raise npvmex.NewMgmtMappingNotFoundException(
stg_name=self.stg_elem.name, vios_name=self.vios_wrap.name)
# new_maps should be length 1, but even if it's not - i.e. we somehow
# matched more than one mapping of the same dev to the management
# partition from the same VIOS - it is safe to use the first one.
the_map = new_maps[0]
# Scan the SCSI bus, discover the disk, find its canonical path.
LOG.info(
"Discovering device and path for mapping of %(dev_name)s "
"on the management partition.", {'dev_name': self.stg_elem.name},
instance=self.instance)
self.disk_path = mgmt.discover_vscsi_disk(the_map)
return self.stg_elem, self.vios_wrap, self.disk_path
def test_discover_vscsi_disk(self, mock_realpath, mock_exec, mock_glob):
scanpath = '/sys/bus/vio/devices/30000005/host*/scsi_host/host*/scan'
udid = ('275b5d5f88fa5611e48be9000098be9400'
'13fb2aa55a2d7b8d150cb1b7b6bc04d6')
devlink = ('/dev/disk/by-id/scsi-SIBM_3303_NVDISK' + udid)
mapping = mock.Mock()
mapping.client_adapter.lpar_slot_num = 5
mapping.backing_storage.udid = udid
# Realistically, first glob would return e.g. .../host0/.../host0/...
# but it doesn't matter for test purposes.
mock_glob.side_effect = [[scanpath], [devlink]]
mgmt.discover_vscsi_disk(mapping)
mock_glob.assert_has_calls(
[mock.call(scanpath), mock.call('/dev/disk/by-id/*' + udid[-32:])])
mock_exec.assert_called_with('tee', '-a', scanpath,
process_input='- - -', run_as_root=True)
mock_realpath.assert_called_with(devlink)
def test_discover_vscsi_disk(self, mock_realpath, mock_dacw, mock_glob):
scanpath = '/sys/bus/vio/devices/30000005/host*/scsi_host/host*/scan'
udid = ('275b5d5f88fa5611e48be9000098be9400'
'13fb2aa55a2d7b8d150cb1b7b6bc04d6')
devlink = ('/dev/disk/by-id/scsi-SIBM_3303_NVDISK' + udid)
mapping = mock.Mock()
mapping.client_adapter.lpar_slot_num = 5
mapping.backing_storage.udid = udid
# Realistically, first glob would return e.g. .../host0/.../host0/...
# but it doesn't matter for test purposes.
mock_glob.side_effect = [[scanpath], [devlink]]
mgmt.discover_vscsi_disk(mapping)
mock_glob.assert_has_calls(
[mock.call(scanpath),
mock.call('/dev/disk/by-id/*' + udid[-32:])])
mock_dacw.assert_called_with(scanpath, 'a', '- - -')
mock_realpath.assert_called_with(devlink)
def execute(self):
"""Map the instance's boot disk and discover it."""
LOG.info(_LI("Mapping boot disk of instance %(instance_name)s to "
"management partition."),
{'instance_name': self.instance.name})
self.stg_elem, self.vios_wrap = (
self.disk_dvr.connect_instance_disk_to_mgmt(self.instance))
new_maps = pvm_smap.find_maps(
self.vios_wrap.scsi_mappings, client_lpar_id=self.disk_dvr.mp_uuid,
stg_elem=self.stg_elem)
if not new_maps:
raise npvmex.NewMgmtMappingNotFoundException(
stg_name=self.stg_elem.name, vios_name=self.vios_wrap.name)
# new_maps should be length 1, but even if it's not - i.e. we somehow
# matched more than one mapping of the same dev to the management
# partition from the same VIOS - it is safe to use the first one.
the_map = new_maps[0]
# Scan the SCSI bus, discover the disk, find its canonical path.
LOG.info(_LI("Discovering device and path for mapping of %(dev_name)s "
"on the management partition."),
{'dev_name': self.stg_elem.name})
self.disk_path = mgmt.discover_vscsi_disk(the_map)
return self.stg_elem, self.vios_wrap, self.disk_path
