67 lines
2.7 KiB
Python
67 lines
2.7 KiB
Python
# Copyright 2014, 2017 IBM Corp.
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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 math
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from oslo_serialization import jsonutils
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from nova import conf as cfg
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from nova.objects import fields
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CONF = cfg.CONF
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# Power VM hypervisor info
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# Normally, the hypervisor version is a string in the form of '8.0.0' and
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# converted to an int with nova.virt.utils.convert_version_to_int() however
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# there isn't currently a mechanism to retrieve the exact version.
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# Complicating this is the fact that nova conductor only allows live migration
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# from the source host to the destination if the source is equal to or less
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# than the destination version. PowerVM live migration limitations are
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# checked by the PowerVM capabilities flags and not specific version levels.
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# For that reason, we'll just publish the major level.
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IBM_POWERVM_HYPERVISOR_VERSION = 8
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# The types of LPARS that are supported.
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POWERVM_SUPPORTED_INSTANCES = [
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(fields.Architecture.PPC64, fields.HVType.PHYP, fields.VMMode.HVM),
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(fields.Architecture.PPC64LE, fields.HVType.PHYP, fields.VMMode.HVM)]
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def build_host_resource_from_ms(ms_w):
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"""Build the host resource dict from a ManagedSystem PowerVM wrapper.
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:param ms_w: The pypowervm System wrapper describing the managed system.
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"""
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data = {}
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# Calculate the vcpus
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proc_units = ms_w.proc_units_configurable
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pu_used = float(proc_units) - float(ms_w.proc_units_avail)
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data['vcpus'] = int(math.ceil(float(proc_units)))
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data['vcpus_used'] = int(math.ceil(pu_used))
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data['memory_mb'] = ms_w.memory_configurable
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data['memory_mb_used'] = (ms_w.memory_configurable -
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ms_w.memory_free)
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data["hypervisor_type"] = fields.HVType.PHYP
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data["hypervisor_version"] = IBM_POWERVM_HYPERVISOR_VERSION
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data["hypervisor_hostname"] = CONF.host
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data["cpu_info"] = jsonutils.dumps({'vendor': 'ibm', 'arch': 'ppc64'})
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data["numa_topology"] = None
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data["supported_instances"] = POWERVM_SUPPORTED_INSTANCES
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stats = {'proc_units': '%.2f' % float(proc_units),
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'proc_units_used': '%.2f' % pu_used,
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'memory_region_size': ms_w.memory_region_size}
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data["stats"] = stats
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return data
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