6cc2a07f70
This change set fixes some minor formatting issues. In general, the following. - Have a consistent return doc string - Have param be format :param xyz: instead of :param: xyz: - A couple spelling issues - Some doc string consolidation Change-Id: I1967c06398a0d1d233f5b1a64203c5fdc7f12126
613 lines
21 KiB
Python
613 lines
21 KiB
Python
# Copyright 2014, 2015 IBM Corp.
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#
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# All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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import json
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from oslo_config import cfg
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from oslo_log import log as logging
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from nova.compute import power_state
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from nova import exception
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from nova.i18n import _LI, _LE, _
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from nova.virt import hardware
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from pypowervm import exceptions as pvm_exc
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from pypowervm.tasks import cna
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from pypowervm.tasks import power
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from pypowervm.tasks import vterm
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from pypowervm.utils import lpar_builder as lpar_bldr
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from pypowervm.utils import uuid as pvm_uuid
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from pypowervm.wrappers import base_partition as pvm_bp
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from pypowervm.wrappers import logical_partition as pvm_lpar
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from pypowervm.wrappers import managed_system as pvm_ms
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from pypowervm.wrappers import network as pvm_net
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from pypowervm.wrappers import shared_proc_pool as pvm_spp
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LOG = logging.getLogger(__name__)
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CONF = cfg.CONF
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POWERVM_TO_NOVA_STATE = {
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"migrating running": power_state.RUNNING,
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"running": power_state.RUNNING,
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"starting": power_state.RUNNING,
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"migrating not active": power_state.SHUTDOWN,
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"not activated": power_state.SHUTDOWN,
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"hardware discovery": power_state.NOSTATE,
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"not available": power_state.NOSTATE,
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# map open firmware state to active since it can be shut down
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"open firmware": power_state.RUNNING,
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"resuming": power_state.NOSTATE,
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"shutting down": power_state.NOSTATE,
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"suspending": power_state.NOSTATE,
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"unknown": power_state.NOSTATE,
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"suspended": power_state.SUSPENDED,
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"error": power_state.CRASHED
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}
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POWERVM_STARTABLE_STATE = ("not activated")
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POWERVM_STOPABLE_STATE = ("running", "starting", "open firmware")
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# Attributes for secure RMC
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# TODO(thorst) The name of the secure RMC vswitch will change.
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SECURE_RMC_VSWITCH = 'MGMT'
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SECURE_RMC_VLAN = 4094
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def _translate_vm_state(pvm_state):
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"""Find the current state of the lpar and convert it to
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the appropriate nova.compute.power_state
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:return: The appropriate integer state value from power_state
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"""
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if pvm_state is None:
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return power_state.NOSTATE
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try:
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nova_state = POWERVM_TO_NOVA_STATE[pvm_state.lower()]
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except KeyError:
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nova_state = power_state.NOSTATE
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return nova_state
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class InstanceInfo(hardware.InstanceInfo):
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"""Instance Information
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This object tries to lazy load the attributes since the compute
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manager retrieves it a lot just to check the status and doesn't need
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all the attributes.
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:param adapter: pypowervm adapter
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:param name: instance name
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:param uuid: powervm uuid
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"""
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def __init__(self, adapter, name, uuid):
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self._adapter = adapter
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self._name = name
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self._uuid = uuid
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self._state = None
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self._mem_kb = None
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self._max_mem_kb = None
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self._num_cpu = None
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# Non-lazy loaded properties
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self.cpu_time_ns = 0
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# Todo(IBM) Should this be the instance UUID vs PowerVM?
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self.id = uuid
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def _get_property(self, q_prop):
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return get_vm_qp(self._adapter, self._uuid, q_prop)
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@property
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def state(self):
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# return the state if we previously loaded it
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if self._state is not None:
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return self._state
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# otherwise, fetch the value now
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pvm_state = self._get_property('PartitionState')
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self._state = _translate_vm_state(pvm_state)
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return self._state
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@property
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def mem_kb(self):
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# return the memory if we previously loaded it
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if self._mem_kb is not None:
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return self._mem_kb
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# otherwise, fetch the value now
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pvm_mem_kb = self._get_property('CurrentMemory')
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self._mem_kb = pvm_mem_kb
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return self._mem_kb
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@property
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def max_mem_kb(self):
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# return the max memory if we previously loaded it
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if self._max_mem_kb is not None:
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return self._max_mem_kb
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# TODO(IBM) max isn't a quick property. We need the wrapper
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return self.mem_kb()
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@property
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def num_cpu(self):
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# return the number of cpus if we previously loaded it
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if self._num_cpu is not None:
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return self._num_cpu
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# otherwise, fetch the value now
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pvm_num_cpu = self._get_property('AllocatedVirtualProcessors')
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self._num_cpu = pvm_num_cpu
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return self._num_cpu
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def __eq__(self, other):
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return (self.__class__ == other.__class__ and
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self._uuid == other._uuid)
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class VMBuilder(object):
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"""Converts a Nova Instance/Flavor into a pypowervm LPARBuilder."""
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# Map of PowerVM extra specs to the lpar builder attributes.
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# '' is used for attributes that are not implemented yet.
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# None means there is no direct attribute mapping and must
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# be handled individually
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_ATTRS_MAP = {
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'powervm:min_mem': lpar_bldr.MIN_MEM,
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'powervm:max_mem': lpar_bldr.MAX_MEM,
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'powervm:min_vcpu': lpar_bldr.MIN_VCPU,
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'powervm:max_vcpu': lpar_bldr.MAX_VCPU,
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'powervm:proc_units': lpar_bldr.PROC_UNITS,
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'powervm:min_proc_units': lpar_bldr.MIN_PROC_U,
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'powervm:max_proc_units': lpar_bldr.MAX_PROC_U,
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'powervm:dedicated_proc': lpar_bldr.DED_PROCS,
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'powervm:uncapped': None,
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'powervm:dedicated_sharing_mode': None,
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'powervm:processor_compatibility': '',
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'powervm:srr_capability': '',
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'powervm:shared_weight': lpar_bldr.UNCAPPED_WEIGHT,
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'powervm:availability_priority': lpar_bldr.AVAIL_PRIORITY,
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'powervm:shared_proc_pool_name': None
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}
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_PVM_UNCAPPED = 'powervm:uncapped'
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_PVM_DED_SHAR_MODE = 'powervm:dedicated_sharing_mode'
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_PVM_SHAR_PROC_POOL = 'powervm:shared_proc_pool_name'
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_DED_SHARING_MODES_MAP = {
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'share_idle_procs': pvm_bp.DedicatedSharingMode.SHARE_IDLE_PROCS,
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'keep_idle_procs': pvm_bp.DedicatedSharingMode.KEEP_IDLE_PROCS,
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'share_idle_procs_active':
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pvm_bp.DedicatedSharingMode.SHARE_IDLE_PROCS_ACTIVE,
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'share_idle_procs_always':
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pvm_bp.DedicatedSharingMode.SHARE_IDLE_PROCS_ALWAYS
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}
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def __init__(self, host_w, adapter):
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"""Initialize the converter.
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:param host_w: The host system wrapper.
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"""
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self.adapter = adapter
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self.host_w = host_w
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self.stdz = lpar_bldr.DefaultStandardize(
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self.host_w, proc_units_factor=CONF.powervm.proc_units_factor)
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def lpar_builder(self, instance, flavor):
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"""Returns the pypowervm LPARBuilder for a given Nova flavor.
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:param instance: the VM instance
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:param flavor: The Nova instance flavor.
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"""
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attrs = self._format_flavor(instance, flavor)
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return lpar_bldr.LPARBuilder(self.adapter, attrs, self.stdz)
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def _format_flavor(self, instance, flavor):
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"""Returns the pypowervm format of the flavor.
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:param instance: the VM instance
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:param flavor: The Nova instance flavor.
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:return: a dict that can be used by the LPAR builder
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"""
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# The attrs are what is sent to pypowervm to convert the lpar.
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attrs = {}
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attrs[lpar_bldr.NAME] = instance.name
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# The uuid is only actually set on a create of an LPAR
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attrs[lpar_bldr.UUID] = pvm_uuid.convert_uuid_to_pvm(instance.uuid)
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attrs[lpar_bldr.MEM] = flavor.memory_mb
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attrs[lpar_bldr.VCPU] = flavor.vcpus
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# Loop through the extra specs and process powervm keys
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for key in flavor.extra_specs.keys():
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# If it is not a valid key, then can skip.
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if not self._is_pvm_valid_key(key):
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continue
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# Look for the mapping to the lpar builder
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bldr_key = self._ATTRS_MAP.get(key)
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# Check for no direct mapping, if the value is none, need to
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# derive the complex type
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if bldr_key is None:
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self._build_complex_type(key, attrs, flavor)
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else:
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# We found a direct mapping
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attrs[bldr_key] = flavor.extra_specs[key]
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return attrs
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def _is_pvm_valid_key(self, key):
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"""Will return if this is a valid PowerVM key.
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:param key: The powervm key.
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:return: True if valid key. False if non-powervm key and should be
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skipped. Raises an InvalidAttribute exception if is an
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unknown PowerVM key.
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"""
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# If not a powervm key, then it is not 'pvm_valid'
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if not key.startswith('powervm:'):
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return False
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# Check if this is a valid attribute
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if key not in self._ATTRS_MAP.keys():
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exc = exception.InvalidAttribute(attr=key)
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raise exc
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return True
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def _build_complex_type(self, key, attrs, flavor):
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"""If a key does not directly map, this method derives the right value.
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Some types are complex, in that the flavor may have one key that maps
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to several different attributes in the lpar builder. This method
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handles the complex types.
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:param key: The flavor's key.
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:param attrs: The attribute map to put the value into.
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:param flavor: The Nova instance flavor.
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:return: The value to put in for the key.
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"""
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# Map uncapped to sharing mode
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if key == self._PVM_UNCAPPED:
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is_uncapped = self._flavor_bool(flavor.extra_specs[key], key)
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shar_mode = (pvm_bp.SharingMode.UNCAPPED if is_uncapped
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else pvm_bp.SharingMode.CAPPED)
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attrs[lpar_bldr.SHARING_MODE] = shar_mode
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elif key == self._PVM_DED_SHAR_MODE:
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# Dedicated sharing modes...map directly
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mode = self._DED_SHARING_MODES_MAP.get(
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flavor.extra_specs[key])
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if mode is not None:
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attrs[lpar_bldr.SHARING_MODE] = mode
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else:
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attr = key + '=' + flavor.extra_specs[key]
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exc = exception.InvalidAttribute(attr=attr)
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LOG.exception(exc)
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raise exc
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elif key == self._PVM_SHAR_PROC_POOL:
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pool_name = flavor.extra_specs[key]
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attrs[lpar_bldr.SPP] = self._spp_pool_id(pool_name)
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# TODO(IBM): Handle other attributes
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else:
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# There was no mapping or we didn't handle it.
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exc = exception.InvalidAttribute(attr=key)
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LOG.exception(exc)
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raise exc
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def _spp_pool_id(self, pool_name):
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"""Returns the shared proc pool id for a given pool name.
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:param pool_name: The shared proc pool name.
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:return: The internal API id for the shared proc pool.
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"""
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if (pool_name is None or
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pool_name == pvm_spp.DEFAULT_POOL_DISPLAY_NAME):
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# The default pool is 0
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return 0
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# Search for the pool with this name
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pool_wraps = pvm_spp.SharedProcPool.search(
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self.adapter, name=pool_name,
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parent_type=pvm_ms.System.schema_type,
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parent_uuid=self.host_w.uuid)
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# Check to make sure there is a pool with the name, and only one pool.
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if len(pool_wraps) > 1:
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msg = (_('Multiple Shared Processing Pools with name %(pool)s.') %
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{'pool': pool_name})
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raise exception.ValidationError(msg)
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elif len(pool_wraps) == 0:
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msg = (_('Unable to find Shared Processing Pool %(pool)s') %
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{'pool': pool_name})
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raise exception.ValidationError(msg)
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# Return the singular pool id.
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return pool_wraps[0].id
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def _flavor_bool(self, val, key):
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"""Will validate and return the boolean for a given value.
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:param val: The value to parse into a boolean.
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:param key: The flavor key.
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:return: The boolean value for the attribute. If is not well formed
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will raise an ValidationError.
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"""
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trues = ['true', 't', 'yes', 'y']
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falses = ['false', 'f', 'no', 'n']
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if val.lower() in trues:
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return True
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elif val.lower() in falses:
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return False
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else:
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msg = (_('Flavor attribute %(attr)s must be either True or '
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'False. Current value %(val)s is not allowed.') %
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{'attr': key, 'val': val})
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raise exception.ValidationError(msg)
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def get_lpars(adapter):
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"""Get a list of the LPAR wrappers."""
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return pvm_lpar.LPAR.search(adapter, is_mgmt_partition=False)
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def get_lpar_names(adapter):
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"""Get a list of the LPAR names."""
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return [x.name for x in get_lpars(adapter)]
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def get_instance_wrapper(adapter, instance, host_uuid):
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"""Get the LPAR wrapper for a given Nova instance.
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:param adapter: The adapter for the pypowervm API
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:param instance: The nova instance.
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:param host_uuid: (TEMPORARY) The host UUID
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:return: The pypowervm logical_partition wrapper.
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"""
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pvm_inst_uuid = get_pvm_uuid(instance)
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resp = adapter.read(pvm_ms.System.schema_type, root_id=host_uuid,
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child_type=pvm_lpar.LPAR.schema_type,
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child_id=pvm_inst_uuid)
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return pvm_lpar.LPAR.wrap(resp)
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def instance_exists(adapter, instance, host_uuid):
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"""Determine if an instance exists on the host.
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:param adapter: The adapter for the pypowervm API
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:param instance: The nova instance.
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:param host_uuid: The host UUID
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:return: boolean, whether the instance exists.
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"""
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try:
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# If we're able to get the property, then it exists.
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get_vm_id(adapter, get_pvm_uuid(instance))
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return True
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except exception.InstanceNotFound:
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return False
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def get_vm_id(adapter, lpar_uuid):
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"""Returns the client LPAR ID for a given UUID.
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:param adapter: The pypowervm adapter.
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:param lpar_uuid: The UUID for the LPAR.
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:return: The system id (an integer value).
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"""
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return get_vm_qp(adapter, lpar_uuid, qprop='PartitionID')
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def get_vm_qp(adapter, lpar_uuid, qprop=None):
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"""Returns one or all quick properties of an LPAR.
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:param adapter: The pypowervm adapter.
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:param lpar_uuid: The (powervm) UUID for the LPAR.
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:param qprop: The quick property key to return. If specified, that single
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property value is returned. If None/unspecified, all quick
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properties are returned in a dictionary.
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:return: Either a single quick property value or a dictionary of all quick
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properties.
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"""
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try:
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resp = adapter.read(pvm_lpar.LPAR.schema_type, root_id=lpar_uuid,
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suffix_type='quick', suffix_parm=qprop)
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except pvm_exc.Error as e:
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if e.response.status == 404:
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raise exception.InstanceNotFound(instance_id=lpar_uuid)
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else:
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LOG.exception(e)
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raise
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return json.loads(resp.body)
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def crt_lpar(adapter, host_wrapper, instance, flavor):
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"""Create an LPAR based on the host based on the instance
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:param adapter: The adapter for the pypowervm API
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:param host_wrapper: The host wrapper
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:param instance: The nova instance.
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:param flavor: The nova flavor.
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:return: The LPAR response from the API.
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"""
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lpar_b = VMBuilder(host_wrapper, adapter).lpar_builder(instance, flavor)
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lpar_w = lpar_b.build().create(parent_type=pvm_ms.System,
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parent_uuid=host_wrapper.uuid)
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return lpar_w
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def update(adapter, host_wrapper, instance, flavor, entry=None):
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"""Update an LPAR based on the host based on the instance
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:param adapter: The adapter for the pypowervm API
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:param host_wrapper: The host wrapper
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:param instance: The nova instance.
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:param flavor: The nova flavor.
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:param entry: The instance pvm entry, if available, otherwise it will
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be fetched.
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"""
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if not entry:
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entry = get_instance_wrapper(adapter, instance, host_wrapper.uuid)
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lpar_b = VMBuilder(host_wrapper, adapter).lpar_builder(instance, flavor)
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lpar_b.rebuild(entry)
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# Write out the new specs
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entry.update()
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def dlt_lpar(adapter, lpar_uuid):
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"""Delete an LPAR
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:param adapter: The adapter for the pypowervm API
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:param lpar_uuid: The lpar to delete
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"""
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# Attempt to delete the VM. If delete fails because of vterm
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# we will close the vterm and try the delete again
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|
try:
|
|
LOG.info(_LI('Deleting virtual machine. LPARID: %s'), lpar_uuid)
|
|
# Ensure any vterms are closed. Will no-op otherwise.
|
|
vterm.close_vterm(adapter, lpar_uuid)
|
|
|
|
# Run the LPAR delete
|
|
resp = adapter.delete(pvm_lpar.LPAR.schema_type, root_id=lpar_uuid)
|
|
LOG.info(_LI('Virtual machine delete status: %d'), resp.status)
|
|
return resp
|
|
except pvm_exc.Error:
|
|
# Attempting to close vterm did not help so raise exception
|
|
LOG.error(_LE('Virtual machine delete failed: LPARID=%s'),
|
|
lpar_uuid)
|
|
raise
|
|
|
|
|
|
def power_on(adapter, instance, host_uuid, entry=None):
|
|
if entry is None:
|
|
entry = get_instance_wrapper(adapter, instance, host_uuid)
|
|
|
|
# Get the current state and see if we can start the VM
|
|
if entry.state in POWERVM_STARTABLE_STATE:
|
|
# Now start the lpar
|
|
power.power_on(entry, host_uuid)
|
|
return True
|
|
|
|
return False
|
|
|
|
|
|
def power_off(adapter, instance, host_uuid, entry=None, add_parms=None):
|
|
if entry is None:
|
|
entry = get_instance_wrapper(adapter, instance, host_uuid)
|
|
|
|
# Get the current state and see if we can stop the VM
|
|
if entry.state in POWERVM_STOPABLE_STATE:
|
|
# Now stop the lpar
|
|
power.power_off(entry, host_uuid, add_parms=add_parms)
|
|
return True
|
|
|
|
return False
|
|
|
|
|
|
def get_pvm_uuid(instance):
|
|
"""Get the corresponding PowerVM VM uuid of an instance uuid
|
|
|
|
Maps a OpenStack instance uuid to a PowerVM uuid. The UUID between the
|
|
Nova instance and PowerVM will be 1 to 1 mapped. This method runs the
|
|
algorithm against the instance's uuid to convert it to the PowerVM
|
|
UUID.
|
|
|
|
:param instance: nova.objects.instance.Instance
|
|
:return: pvm_uuid.
|
|
"""
|
|
return pvm_uuid.convert_uuid_to_pvm(instance.uuid).upper()
|
|
|
|
|
|
def get_cnas(adapter, instance, host_uuid):
|
|
"""Returns the current CNAs on the instance.
|
|
|
|
The Client Network Adapters are the Ethernet adapters for a VM.
|
|
:param adapter: The pypowervm adapter.
|
|
:param instance: The nova instance.
|
|
:param host_uuid: The host system UUID.
|
|
:return The CNA wrappers that represent the ClientNetworkAdapters on the VM
|
|
"""
|
|
cna_resp = adapter.read(pvm_lpar.LPAR.schema_type,
|
|
root_id=get_pvm_uuid(instance),
|
|
child_type=pvm_net.CNA.schema_type)
|
|
return pvm_net.CNA.wrap(cna_resp)
|
|
|
|
|
|
def crt_vif(adapter, instance, host_uuid, vif):
|
|
"""Will create a Client Network Adapter on the system.
|
|
|
|
:param adapter: The pypowervm adapter API interface.
|
|
:param instance: The nova instance to create the VIF against.
|
|
:param host_uuid: The host system UUID.
|
|
:param vif: The nova VIF that describes the ethernet interface.
|
|
:return: The created network adapter wrapper.
|
|
"""
|
|
lpar_uuid = get_pvm_uuid(instance)
|
|
# CNA's require a VLAN. If the network doesn't provide, default to 1
|
|
vlan = vif['network']['meta'].get('vlan', 1)
|
|
return cna.crt_cna(adapter, host_uuid, lpar_uuid, vlan,
|
|
mac_addr=vif['address'])
|
|
|
|
|
|
def crt_secure_rmc_vif(adapter, instance, host_uuid):
|
|
"""Creates the Secure RMC Network Adapter on the VM.
|
|
|
|
:param adapter: The pypowervm adapter API interface.
|
|
:param instance: The nova instance to create the VIF against.
|
|
:param host_uuid: The host system UUID.
|
|
:return: The created network adapter wrapper.
|
|
"""
|
|
lpar_uuid = get_pvm_uuid(instance)
|
|
return cna.crt_cna(adapter, host_uuid, lpar_uuid, SECURE_RMC_VLAN,
|
|
vswitch=SECURE_RMC_VSWITCH, crt_vswitch=True)
|
|
|
|
|
|
def get_secure_rmc_vswitch(adapter, host_uuid):
|
|
"""Returns the vSwitch that is used for secure RMC.
|
|
|
|
:param adapter: The pypowervm adapter API interface.
|
|
:param host_uuid: The host system UUID.
|
|
:return: The wrapper for the secure RMC vSwitch. If it does not exist
|
|
on the system, None is returned.
|
|
"""
|
|
resp = adapter.read(pvm_ms.System.schema_type, root_id=host_uuid,
|
|
child_type=pvm_net.VSwitch.schema_type)
|
|
vswitches = pvm_net.VSwitch.wrap(resp)
|
|
for vswitch in vswitches:
|
|
if vswitch.name == SECURE_RMC_VSWITCH:
|
|
return vswitch
|
|
return None
|
|
|
|
|
|
def norm_mac(mac):
|
|
"""Normalizes a MAC address from pypowervm format to OpenStack.
|
|
|
|
That means that the format will be converted to lower case and will
|
|
have colons added.
|
|
|
|
:param mac: A pypowervm mac address. Ex. 1234567890AB
|
|
:return: A mac that matches the standard neutron format.
|
|
Ex. 12:34:56:78:90:ab
|
|
"""
|
|
mac = mac.lower().replace(':', '')
|
|
return ':'.join(mac[i:i + 2] for i in range(0, len(mac), 2))
|