77 lines
2.8 KiB
Python
77 lines
2.8 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
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# Copyright (C) 2012 Yahoo! Inc. 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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from devstack import log as logging
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from devstack import shell as sh
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from devstack import utils
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LOG = logging.getLogger('devstack.libvirt')
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#http://libvirt.org/uri.html
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LIBVIRT_PROTOCOL_MAP = {
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'qemu': "qemu:///system",
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'kvm': "qemu:///system",
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'xen': 'xen:///',
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}
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VIRT_TYPE = 'libvirt'
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VIRT_LIB = VIRT_TYPE
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def _get_virt_lib():
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#late import so that we don't always need this library to be active
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#ie if u aren't using libvirt in the first place
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return utils.import_module(VIRT_LIB)
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def _destroy_domain(conn, dom_name):
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libvirt = _get_virt_lib()
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if not libvirt or not dom_name:
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return
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try:
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dom = conn.lookupByName(dom_name)
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LOG.debug("Destroying domain (%s) (id=%s) running %s" % (dom_name, dom.ID(), dom.OSType()))
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dom.destroy()
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dom.undefine()
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except libvirt.libvirtError, e:
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LOG.warn("Could not clear out libvirt domain (%s) due to [%s]" % (dom_name, e.message))
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def clear_libvirt_domains(virt_type, inst_prefix):
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libvirt = _get_virt_lib()
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virt_protocol = LIBVIRT_PROTOCOL_MAP.get(virt_type)
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if not libvirt or not virt_protocol or not inst_prefix:
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return
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with sh.Rooted(True):
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LOG.info("Attempting to clear out leftover libvirt domains using protocol %s." % (virt_protocol))
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conn = None
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try:
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conn = libvirt.open(virt_protocol)
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except libvirt.libvirtError:
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LOG.warn("Could not connect to libvirt using protocol [%s]" % (virt_protocol))
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if conn:
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try:
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defined_domains = conn.listDefinedDomains()
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kill_domains = list()
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for domain in defined_domains:
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if domain.startswith(inst_prefix):
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kill_domains.append(domain)
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if kill_domains:
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LOG.info("Found %s old domains to destroy (%s)" % (len(kill_domains), ", ".join(kill_domains)))
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for domain in kill_domains:
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_destroy_domain(conn, domain)
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except libvirt.libvirtError, e:
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LOG.warn("Could not clear out libvirt domains due to [%s]" % (e.message))
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