105 lines
3.1 KiB
Python
105 lines
3.1 KiB
Python
#!/usr/bin/env python
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# Copyright 2013 OpenStack Foundation
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain 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,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""
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One-time script to populate VDI.other_config.
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We use metadata stored in VDI.other_config to associate a VDI with a given
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instance so that we may safely cleanup orphaned VDIs.
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We had a bug in the code that meant that the vast majority of VDIs created
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would not have the other_config populated.
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After deploying the fixed code, this script is intended to be run against all
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compute-workers in a cluster so that existing VDIs can have their other_configs
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populated.
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Run on compute-worker (not Dom0):
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python ./tools/xenserver/populate_other_config.py [--dry-run|--verbose]
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"""
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import os
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import sys
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possible_topdir = os.getcwd()
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if os.path.exists(os.path.join(possible_topdir, "nova", "__init__.py")):
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sys.path.insert(0, possible_topdir)
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from oslo_config import cfg
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from oslo_utils import uuidutils
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from nova import config
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from nova.virt import virtapi
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from nova.virt.xenapi import driver as xenapi_driver
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from nova.virt.xenapi import vm_utils
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cli_opts = [
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cfg.BoolOpt('dry-run',
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default=False,
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help='Whether to actually update other_config.'),
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]
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CONF = cfg.CONF
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CONF.register_cli_opts(cli_opts)
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def main():
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config.parse_args(sys.argv)
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xenapi = xenapi_driver.XenAPIDriver(virtapi.VirtAPI())
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session = xenapi._session
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vdi_refs = session.call_xenapi('VDI.get_all')
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for vdi_ref in vdi_refs:
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vdi_rec = session.call_xenapi('VDI.get_record', vdi_ref)
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other_config = vdi_rec['other_config']
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# Already set...
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if 'nova_instance_uuid' in other_config:
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continue
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name_label = vdi_rec['name_label']
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# We only want name-labels of form instance-<UUID>-[optional-suffix]
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if not name_label.startswith('instance-'):
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continue
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# Parse out UUID
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instance_uuid = name_label.replace('instance-', '')[:36]
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if not uuidutils.is_uuid_like(instance_uuid):
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print("error: name label '%s' wasn't UUID-like" % name_label)
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continue
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vdi_type = vdi_rec['name_description']
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# We don't need a full instance record, just the UUID
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instance = {'uuid': instance_uuid}
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if not CONF.dry_run:
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vm_utils._set_vdi_info(session, vdi_ref, vdi_type, name_label,
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vdi_type, instance)
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if CONF.verbose:
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print("Setting other_config for instance_uuid=%s vdi_uuid=%s" % (
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instance_uuid, vdi_rec['uuid']))
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if CONF.dry_run:
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print("Dry run completed")
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if __name__ == "__main__":
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main()
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