def report_state(self):
"""Update the state of this service in the datastore."""
ctxt = context.get_admin_context()
try:
try:
service_ref = db.service_get(ctxt, self.service_id)
except exception.NotFound:
logging.debug(_("The service database object disappeared, "
"Recreating it."))
self._create_service_ref(ctxt)
service_ref = db.service_get(ctxt, self.service_id)
db.service_update(ctxt,
self.service_id,
{'report_count': service_ref['report_count'] + 1})
# TODO(termie): make this pattern be more elegant.
if getattr(self, "model_disconnected", False):
self.model_disconnected = False
logging.error(_("Recovered model server connection!"))
# TODO(vish): this should probably only catch connection errors
except Exception: # pylint: disable=W0702
if not getattr(self, "model_disconnected", False):
self.model_disconnected = True
logging.exception(_("model server went away"))
def report_state(self):
"""Update the state of this service in the datastore."""
ctxt = context.get_admin_context()
zone = FLAGS.node_availability_zone
state_catalog = {}
try:
try:
service_ref = db.service_get(ctxt, self.service_id)
except exception.NotFound:
logging.debug(_('The service database object disappeared, '
'Recreating it.'))
self._create_service_ref(ctxt)
service_ref = db.service_get(ctxt, self.service_id)
state_catalog['report_count'] = service_ref['report_count'] + 1
if zone != service_ref['availability_zone']:
state_catalog['availability_zone'] = zone
db.service_update(ctxt,
self.service_id, state_catalog)
# TODO(termie): make this pattern be more elegant.
if getattr(self, 'model_disconnected', False):
self.model_disconnected = False
logging.error(_('Recovered model server connection!'))
# TODO(vish): this should probably only catch connection errors
except Exception: # pylint: disable=W0702
if not getattr(self, 'model_disconnected', False):
self.model_disconnected = True
logging.exception(_('model server went away'))
def upgrade(migrate_engine):
meta.bind = migrate_engine
for table in tables:
try:
table.create()
except Exception:
logging.exception(repr(table))
def upgrade(migrate_engine):
# Upgrade operations go here. Don't create your own engine;
# bind migrate_engine to your metadata
meta.bind = migrate_engine
tables = [
certificates, console_pools, consoles, instance_actions, iscsi_targets
]
for table in tables:
try:
table.create()
except Exception:
logging.info(repr(table))
logging.exception('Exception while creating table')
meta.drop_all(tables=tables)
raise
auth_tokens.c.user_id.alter(type=String(length=255,
convert_unicode=False,
assert_unicode=None,
unicode_error=None,
_warn_on_bytestring=False))
instances.create_column(instances_availability_zone)
instances.create_column(instances_locked)
networks.create_column(networks_cidr_v6)
networks.create_column(networks_ra_server)
services.create_column(services_availability_zone)
def downgrade(migrate_engine):
meta.bind = migrate_engine
for table in tables:
try:
table.drop()
except Exception:
logging.exception(repr(table))
def upgrade(migrate_engine):
# Upgrade operations go here
# Don't create your own engine; bind migrate_engine
# to your metadata
meta.bind = migrate_engine
try:
instance_types.create()
except Exception:
logging.info(repr(instance_types))
logging.exception('Exception while creating instance_types table')
raise
# Here are the old static instance types
INSTANCE_TYPES = {
'm1.tiny': dict(memory_mb=512, vcpus=1, local_gb=0, flavorid=1),
'm1.small': dict(memory_mb=2048, vcpus=1, local_gb=20, flavorid=2),
'm1.medium': dict(memory_mb=4096, vcpus=2, local_gb=40, flavorid=3),
'm1.large': dict(memory_mb=8192, vcpus=4, local_gb=80, flavorid=4),
'm1.xlarge': dict(memory_mb=16384, vcpus=8, local_gb=160, flavorid=5)}
try:
i = instance_types.insert()
for name, values in INSTANCE_TYPES.iteritems():
# FIXME(kpepple) should we be seeding created_at / updated_at ?
# now = datetime.datatime.utcnow()
i.execute({'name': name, 'memory_mb': values["memory_mb"],
'vcpus': values["vcpus"], 'deleted': False,
'local_gb': values["local_gb"],
'flavorid': values["flavorid"]})
except Exception:
logging.info(repr(instance_types))
logging.exception('Exception while seeding instance_types table')
raise
def _process_data(self, msg_id, ctxt, method, args):
"""Thread that maigcally looks for a method on the proxy
object and calls it.
"""
node_func = getattr(self.proxy, str(method))
node_args = dict((str(k), v) for k, v in args.iteritems())
# NOTE(vish): magic is fun!
try:
rval = node_func(context=ctxt, **node_args)
if msg_id:
# Check if the result was a generator
if isinstance(rval, types.GeneratorType):
for x in rval:
msg_reply(msg_id, x, None)
else:
msg_reply(msg_id, rval, None)
# This final None tells multicall that it is done.
msg_reply(msg_id, None, None)
elif isinstance(rval, types.GeneratorType):
# NOTE(vish): this iterates through the generator
list(rval)
except Exception as e:
logging.exception('Exception during message handling')
if msg_id:
msg_reply(msg_id, None, sys.exc_info())
return
def upgrade(migrate_engine):
# Upgrade operations go here. Don't create your own engine;
# bind migrate_engine to your metadata
meta.bind = migrate_engine
tables = [certificates, console_pools, consoles, instance_actions,
iscsi_targets]
for table in tables:
try:
table.create()
except Exception:
logging.info(repr(table))
logging.exception('Exception while creating table')
meta.drop_all(tables=tables)
raise
auth_tokens.c.user_id.alter(type=String(length=255,
convert_unicode=False,
assert_unicode=None,
unicode_error=None,
_warn_on_bytestring=False))
instances.create_column(instances_availability_zone)
instances.create_column(instances_locked)
networks.create_column(networks_cidr_v6)
networks.create_column(networks_ra_server)
services.create_column(services_availability_zone)
def report_state(self):
"""Update the state of this service in the datastore."""
ctxt = context.get_admin_context()
try:
try:
service_ref = db.service_get(ctxt, self.service_id)
except exception.NotFound:
logging.debug(
_('The service database object disappeared, '
'Recreating it.'))
self._create_service_ref(ctxt)
service_ref = db.service_get(ctxt, self.service_id)
db.service_update(
ctxt, self.service_id,
{'report_count': service_ref['report_count'] + 1})
# TODO(termie): make this pattern be more elegant.
if getattr(self, 'model_disconnected', False):
self.model_disconnected = False
logging.error(_('Recovered model server connection!'))
# TODO(vish): this should probably only catch connection errors
except Exception: # pylint: disable=W0702
if not getattr(self, 'model_disconnected', False):
self.model_disconnected = True
logging.exception(_('model server went away'))
def _process_data(self, msg_id, ctxt, method, args):
"""Thread that maigcally looks for a method on the proxy
object and calls it.
"""
node_func = getattr(self.proxy, str(method))
node_args = dict((str(k), v) for k, v in args.iteritems())
# NOTE(vish): magic is fun!
try:
rval = node_func(context=ctxt, **node_args)
if msg_id:
# Check if the result was a generator
if isinstance(rval, types.GeneratorType):
for x in rval:
msg_reply(msg_id, x, None)
else:
msg_reply(msg_id, rval, None)
# This final None tells multicall that it is done.
msg_reply(msg_id, None, None)
elif isinstance(rval, types.GeneratorType):
# NOTE(vish): this iterates through the generator
list(rval)
except Exception as e:
logging.exception("Exception during message handling")
if msg_id:
msg_reply(msg_id, None, sys.exc_info())
return
def downgrade(migrate_engine):
meta.bind = migrate_engine
try:
export_devices.create()
except Exception:
logging.info(repr(export_devices))
logging.exception('Exception while creating table')
raise
def downgrade(migrate_engine):
meta.bind = migrate_engine
try:
export_devices.create()
except Exception:
logging.info(repr(export_devices))
logging.exception('Exception while creating table')
raise
def downgrade(migrate_engine):
# Operations to reverse the above upgrade go here.
meta.bind = migrate_engine
try:
local_volumes.drop(migrate_engine)
except Exception:
logging.info(repr(local_volumes))
logging.exception('Exception while dropping instance_types table')
raise
def _live_migration_common_check(self, context, instance_ref, dest):
"""Live migration common check routine.
Below checkings are followed by
http://wiki.libvirt.org/page/TodoPreMigrationChecks
:param context: security context
:param instance_ref: nova.db.sqlalchemy.models.Instance object
:param dest: destination host
"""
# Checking shared storage connectivity
self.mounted_on_same_shared_storage(context, instance_ref, dest)
# Checking dest exists.
dservice_refs = db.service_get_all_compute_by_host(context, dest)
dservice_ref = dservice_refs[0]['compute_node'][0]
# Checking original host( where instance was launched at) exists.
try:
oservice_refs = db.service_get_all_compute_by_host(context,
instance_ref['launched_on'])
except exception.NotFound:
raise exception.Invalid(_("host %s where instance was launched "
"does not exist.")
% instance_ref['launched_on'])
oservice_ref = oservice_refs[0]['compute_node'][0]
# Checking hypervisor is same.
orig_hypervisor = oservice_ref['hypervisor_type']
dest_hypervisor = dservice_ref['hypervisor_type']
if orig_hypervisor != dest_hypervisor:
raise exception.Invalid(_("Different hypervisor type"
"(%(orig_hypervisor)s->"
"%(dest_hypervisor)s)')" % locals()))
# Checkng hypervisor version.
orig_hypervisor = oservice_ref['hypervisor_version']
dest_hypervisor = dservice_ref['hypervisor_version']
if orig_hypervisor > dest_hypervisor:
raise exception.Invalid(_("Older hypervisor version"
"(%(orig_hypervisor)s->"
"%(dest_hypervisor)s)") % locals())
# Checking cpuinfo.
try:
rpc.call(context,
db.queue_get_for(context, FLAGS.compute_topic, dest),
{"method": 'compare_cpu',
"args": {'cpu_info': oservice_ref['cpu_info']}})
except rpc.RemoteError:
src = instance_ref['host']
logging.exception(_("host %(dest)s is not compatible with "
"original host %(src)s.") % locals())
raise
def upgrade(migrate_engine):
meta.bind = migrate_engine
try:
s3_images.create()
except Exception:
logging.exception("Exception while creating table 's3_images'")
meta.drop_all(tables=[s3_images])
raise
def upgrade(migrate_engine):
meta.bind = migrate_engine
try:
s3_images.create()
except Exception:
logging.exception("Exception while creating table 's3_images'")
meta.drop_all(tables=[s3_images])
raise
def _live_migration_common_check(self, context, instance_ref, dest):
"""Live migration common check routine.
Below checkings are followed by
http://wiki.libvirt.org/page/TodoPreMigrationChecks
:param context: security context
:param instance_ref: nova.db.sqlalchemy.models.Instance object
:param dest: destination host
"""
# Checking shared storage connectivity
self.mounted_on_same_shared_storage(context, instance_ref, dest)
# Checking dest exists.
dservice_refs = db.service_get_all_compute_by_host(context, dest)
dservice_ref = dservice_refs[0]['compute_node'][0]
# Checking original host( where instance was launched at) exists.
try:
oservice_refs = db.service_get_all_compute_by_host(
context, instance_ref['launched_on'])
except exception.NotFound:
raise exception.SourceHostUnavailable()
oservice_ref = oservice_refs[0]['compute_node'][0]
# Checking hypervisor is same.
orig_hypervisor = oservice_ref['hypervisor_type']
dest_hypervisor = dservice_ref['hypervisor_type']
if orig_hypervisor != dest_hypervisor:
raise exception.InvalidHypervisorType()
# Checkng hypervisor version.
orig_hypervisor = oservice_ref['hypervisor_version']
dest_hypervisor = dservice_ref['hypervisor_version']
if orig_hypervisor > dest_hypervisor:
raise exception.DestinationHypervisorTooOld()
# Checking cpuinfo.
try:
rpc.call(
context, db.queue_get_for(context, FLAGS.compute_topic, dest),
{
"method": 'compare_cpu',
"args": {
'cpu_info': oservice_ref['cpu_info']
}
})
except rpc.RemoteError:
src = instance_ref['host']
logging.exception(
_("host %(dest)s is not compatible with "
"original host %(src)s.") % locals())
raise
def upgrade(migrate_engine):
# Upgrade operations go here. Don't create your own engine;
# bind migrate_engine to your metadata
meta.bind = migrate_engine
for table in (migrations, ):
try:
table.create()
except Exception:
logging.info(repr(table))
logging.exception('Exception while creating table')
raise
def upgrade(migrate_engine):
# Upgrade operations go here
# Don't create your own engine; bind migrate_engine
# to your metadata
meta.bind = migrate_engine
try:
local_volumes.create()
except Exception:
logging.info(repr(local_volumes))
logging.exception('Exception while creating instance_types table')
raise
def upgrade(migrate_engine):
# Upgrade operations go here. Don't create your own engine;
# bind migrate_engine to your metadata
meta.bind = migrate_engine
try:
block_device_mapping.create()
except Exception:
logging.info(repr(block_device_mapping))
logging.exception('Exception while creating table')
meta.drop_all(tables=[block_device_mapping])
raise
def upgrade(migrate_engine):
# Upgrade operations go here. Don't create your own engine;
# bind migrate_engine to your metadata
meta.bind = migrate_engine
for table in (migrations, ):
try:
table.create()
except Exception:
logging.info(repr(table))
logging.exception('Exception while creating table')
raise
def upgrade(migrate_engine):
# Upgrade operations go here. Don't create your own engine;
# bind migrate_engine to your metadata
meta.bind = migrate_engine
try:
virtual_storage_arrays.create()
except Exception:
logging.info(repr(table))
logging.exception('Exception while creating table')
raise
def upgrade(migrate_engine):
# Upgrade operations go here. Don't create your own engine;
# bind migrate_engine to your metadata
meta.bind = migrate_engine
try:
virtual_storage_arrays.create()
except Exception:
logging.info(repr(table))
logging.exception('Exception while creating table')
raise
def upgrade(migrate_engine):
# Upgrade operations go here. Don't create your own engine;
# bind migrate_engine to your metadata
meta.bind = migrate_engine
try:
block_device_mapping.create()
except Exception:
logging.info(repr(block_device_mapping))
logging.exception('Exception while creating table')
meta.drop_all(tables=[block_device_mapping])
raise
def upgrade(migrate_engine):
# Upgrade operations go here. Don't create your own engine;
# bind migrate_engine to your metadata
meta.bind = migrate_engine
try:
snapshots.create()
except Exception:
logging.info(repr(snapshots))
logging.exception('Exception while creating table')
meta.drop_all(tables=[snapshots])
raise
def upgrade(migrate_engine):
meta.bind = migrate_engine
for table in new_tables:
try:
table.create()
except Exception:
logging.info(repr(table))
logging.exception('Exception while creating table')
raise
volumes.create_column(volume_type_id)
def upgrade(migrate_engine):
# Upgrade operations go here. Don't create your own engine;
# bind migrate_engine to your metadata
meta.bind = migrate_engine
try:
snapshots.create()
except Exception:
logging.info(repr(snapshots))
logging.exception('Exception while creating table')
meta.drop_all(tables=[snapshots])
raise
def upgrade(migrate_engine):
meta.bind = migrate_engine
for table in new_tables:
try:
table.create()
except Exception:
logging.info(repr(table))
logging.exception('Exception while creating table')
raise
volumes.create_column(volume_type_id)
def upgrade(migrate_engine):
# Upgrade operations go here. Don't create your own engine;
# bind migrate_engine to your metadata
meta.bind = migrate_engine
for table in (instance_metadata_table, ):
try:
table.create()
except Exception:
logging.info(repr(table))
logging.exception('Exception while creating table')
raise
quotas.create_column(quota_metadata_items)
def upgrade(migrate_engine):
# Upgrade operations go here. Don't create your own engine;
# bind migrate_engine to your metadata
meta.bind = migrate_engine
for table in (instance_metadata_table, ):
try:
table.create()
except Exception:
logging.info(repr(table))
logging.exception('Exception while creating table')
raise
quotas.create_column(quota_metadata_items)
def upgrade(migrate_engine):
# Upgrade operations go here. Don't create your own engine;
# bind migrate_engine to your metadata
meta.bind = migrate_engine
try:
compute_nodes.create()
except Exception:
logging.info(repr(compute_nodes))
logging.exception('Exception while creating table')
meta.drop_all(tables=[compute_nodes])
raise
instances.create_column(instances_launched_on)
def upgrade(migrate_engine):
# Upgrade operations go here. Don't create your own engine;
# bind migrate_engine to your metadata
meta.bind = migrate_engine
try:
compute_nodes.create()
except Exception:
logging.info(repr(compute_nodes))
logging.exception('Exception while creating table')
meta.drop_all(tables=[compute_nodes])
raise
instances.create_column(instances_launched_on)
def upgrade(migrate_engine):
# Upgrade operations go here. Don't create your own engine;
# bind migrate_engine to your metadata
meta.bind = migrate_engine
try:
phy_hosts.create()
phy_interfaces.create()
phy_deployments.create()
phy_pxe_ips.create()
except Exception:
logging.info(repr(phy_hosts))
logging.exception('Exception while creating table')
meta.drop_all(tables=[phy_hosts])
raise
def serve_wsgi(cls, conf=None):
try:
service = cls.create(conf)
except Exception:
logging.exception('in WsgiService.create()')
raise
finally:
# After we've loaded up all our dynamic bits, check
# whether we should print help
flags.DEFINE_flag(flags.HelpFlag())
flags.DEFINE_flag(flags.HelpshortFlag())
flags.DEFINE_flag(flags.HelpXMLFlag())
FLAGS.ParseNewFlags()
service.start()
return service
def start(self, interval, now=True):
self._running = True
done = event.Event()
def _inner():
if not now:
greenthread.sleep(interval)
try:
while self._running:
self.f(*self.args, **self.kw)
greenthread.sleep(interval)
except LoopingCallDone, e:
self.stop()
done.send(e.retvalue)
except Exception:
logging.exception('in looping call')
done.send_exception(*sys.exc_info())
return
def upgrade(migrate_engine):
# Upgrade operations go here. Don't create your own engine;
# bind migrate_engine to your metadata
meta.bind = migrate_engine
tables = [auth_tokens,
instances, key_pairs, networks, fixed_ips, floating_ips,
quotas, security_groups, security_group_inst_assoc,
security_group_rules, services, users, projects,
user_project_association, user_project_role_association,
user_role_association, volumes, export_devices]
for table in tables:
try:
table.create()
except Exception:
logging.info(repr(table))
logging.exception('Exception while creating table')
meta.drop_all(tables=tables)
raise
def upgrade(migrate_engine):
# Upgrade operations go here. Don't create your own engine;
# bind migrate_engine to your metadata
meta.bind = migrate_engine
tables = [
auth_tokens, instances, key_pairs, networks, fixed_ips, floating_ips,
quotas, security_groups, security_group_inst_assoc,
security_group_rules, services, users, projects,
user_project_association, user_project_role_association,
user_role_association, volumes, export_devices
]
for table in tables:
try:
table.create()
except Exception:
logging.info(repr(table))
logging.exception('Exception while creating table')
meta.drop_all(tables=tables)
raise
def _receive(self, message_data, message):
"""Magically looks for a method on the proxy object and calls it.
Message data should be a dictionary with two keys:
method: string representing the method to call
args: dictionary of arg: value
Example: {'method': 'echo', 'args': {'value': 42}}
"""
LOG.debug(_('received %s') % message_data)
msg_id = message_data.pop('_msg_id', None)
ctxt = _unpack_context(message_data)
method = message_data.get('method')
args = message_data.get('args', {})
message.ack()
if not method:
# NOTE(vish): we may not want to ack here, but that means that bad
# messages stay in the queue indefinitely, so for now
# we just log the message and send an error string
# back to the caller
LOG.warn(_('no method for message: %s') % message_data)
msg_reply(msg_id, _('No method for message: %s') % message_data)
return
node_func = getattr(self.proxy, str(method))
node_args = dict((str(k), v) for k, v in args.iteritems())
# NOTE(vish): magic is fun!
try:
rval = node_func(context=ctxt, **node_args)
if msg_id:
msg_reply(msg_id, rval, None)
except Exception as e:
logging.exception('Exception during message handling')
if msg_id:
msg_reply(msg_id, None, sys.exc_info())
return
def _receive(self, message_data, message):
"""Magically looks for a method on the proxy object and calls it.
Message data should be a dictionary with two keys:
method: string representing the method to call
args: dictionary of arg: value
Example: {'method': 'echo', 'args': {'value': 42}}
"""
LOG.debug(_('received %s') % message_data)
msg_id = message_data.pop('_msg_id', None)
ctxt = _unpack_context(message_data)
method = message_data.get('method')
args = message_data.get('args', {})
message.ack()
if not method:
# NOTE(vish): we may not want to ack here, but that means that bad
# messages stay in the queue indefinitely, so for now
# we just log the message and send an error string
# back to the caller
LOG.warn(_('no method for message: %s') % message_data)
msg_reply(msg_id, _('No method for message: %s') % message_data)
return
node_func = getattr(self.proxy, str(method))
node_args = dict((str(k), v) for k, v in args.iteritems())
# NOTE(vish): magic is fun!
try:
rval = node_func(context=ctxt, **node_args)
if msg_id:
msg_reply(msg_id, rval, None)
except Exception as e:
logging.exception('Exception during message handling')
if msg_id:
msg_reply(msg_id, None, sys.exc_info())
return
def upgrade(migrate_engine):
# Upgrade operations go here
# Don't create your own engine; bind migrate_engine
# to your metadata
meta.bind = migrate_engine
try:
instance_types.create()
except Exception:
logging.info(repr(instance_types))
logging.exception('Exception while creating instance_types table')
raise
# Here are the old static instance types
INSTANCE_TYPES = {
'm1.tiny': dict(memory_mb=512, vcpus=1, local_gb=0, flavorid=1),
'm1.small': dict(memory_mb=2048, vcpus=1, local_gb=20, flavorid=2),
'm1.medium': dict(memory_mb=4096, vcpus=2, local_gb=40, flavorid=3),
'm1.large': dict(memory_mb=8192, vcpus=4, local_gb=80, flavorid=4),
'm1.xlarge': dict(memory_mb=16384, vcpus=8, local_gb=160, flavorid=5)
}
try:
i = instance_types.insert()
for name, values in INSTANCE_TYPES.iteritems():
# FIXME(kpepple) should we be seeding created_at / updated_at ?
# now = datetime.datatime.utcnow()
i.execute({
'name': name,
'memory_mb': values["memory_mb"],
'vcpus': values["vcpus"],
'deleted': False,
'local_gb': values["local_gb"],
'flavorid': values["flavorid"]
})
except Exception:
logging.info(repr(instance_types))
logging.exception('Exception while seeding instance_types table')
raise
def serve(*services):
try:
if not services:
services = [Service.create()]
except Exception:
logging.exception('in Service.create()')
raise
finally:
# After we've loaded up all our dynamic bits, check
# whether we should print help
flags.DEFINE_flag(flags.HelpFlag())
flags.DEFINE_flag(flags.HelpshortFlag())
flags.DEFINE_flag(flags.HelpXMLFlag())
FLAGS.ParseNewFlags()
name = '_'.join(x.binary for x in services)
logging.debug(_("Serving %s"), name)
logging.debug(_("Full set of FLAGS:"))
for flag in FLAGS:
flag_get = FLAGS.get(flag, None)
logging.debug("%(flag)s : %(flag_get)s" % locals())
for x in services:
x.start()
def serve(*services):
try:
if not services:
services = [Service.create()]
except Exception:
logging.exception('in Service.create()')
raise
finally:
# After we've loaded up all our dynamic bits, check
# whether we should print help
flags.DEFINE_flag(flags.HelpFlag())
flags.DEFINE_flag(flags.HelpshortFlag())
flags.DEFINE_flag(flags.HelpXMLFlag())
FLAGS.ParseNewFlags()
name = '_'.join(x.binary for x in services)
logging.debug(_('Serving %s'), name)
logging.debug(_('Full set of FLAGS:'))
for flag in FLAGS:
flag_get = FLAGS.get(flag, None)
logging.debug('%(flag)s : %(flag_get)s' % locals())
for x in services:
x.start()
def _live_migration_common_check(self, context, instance_ref, dest,
block_migration):
"""Live migration common check routine.
Below checkings are followed by
http://wiki.libvirt.org/page/TodoPreMigrationChecks
:param context: security context
:param instance_ref: nova.db.sqlalchemy.models.Instance object
:param dest: destination host
:param block_migration if True, check for block_migration.
"""
# Checking shared storage connectivity
# if block migration, instances_paths should not be on shared storage.
try:
self.mounted_on_same_shared_storage(context, instance_ref, dest)
if block_migration:
reason = _("Block migration can not be used "
"with shared storage.")
raise exception.InvalidSharedStorage(reason=reason, path=dest)
except exception.FileNotFound:
if not block_migration:
src = instance_ref['host']
ipath = FLAGS.instances_path
logging.error(
_("Cannot confirm tmpfile at %(ipath)s is on "
"same shared storage between %(src)s "
"and %(dest)s.") % locals())
raise
# Checking dest exists.
dservice_refs = db.service_get_all_compute_by_host(context, dest)
dservice_ref = dservice_refs[0]['compute_node'][0]
# Checking original host( where instance was launched at) exists.
try:
oservice_refs = db.service_get_all_compute_by_host(
context, instance_ref['launched_on'])
except exception.NotFound:
raise exception.SourceHostUnavailable()
oservice_ref = oservice_refs[0]['compute_node'][0]
# Checking hypervisor is same.
orig_hypervisor = oservice_ref['hypervisor_type']
dest_hypervisor = dservice_ref['hypervisor_type']
if orig_hypervisor != dest_hypervisor:
raise exception.InvalidHypervisorType()
# Checkng hypervisor version.
orig_hypervisor = oservice_ref['hypervisor_version']
dest_hypervisor = dservice_ref['hypervisor_version']
if orig_hypervisor > dest_hypervisor:
raise exception.DestinationHypervisorTooOld()
# Checking cpuinfo.
try:
rpc.call(
context, db.queue_get_for(context, FLAGS.compute_topic, dest),
{
"method": 'compare_cpu',
"args": {
'cpu_info': oservice_ref['cpu_info']
}
})
except rpc.RemoteError:
src = instance_ref['host']
logging.exception(
_("host %(dest)s is not compatible with "
"original host %(src)s.") % locals())
raise
def _live_migration_common_check(self, context, instance_ref, dest,
block_migration):
"""Live migration common check routine.
Below checkings are followed by
http://wiki.libvirt.org/page/TodoPreMigrationChecks
:param context: security context
:param instance_ref: nova.db.sqlalchemy.models.Instance object
:param dest: destination host
:param block_migration if True, check for block_migration.
"""
# Checking shared storage connectivity
# if block migration, instances_paths should not be on shared storage.
try:
self.mounted_on_same_shared_storage(context, instance_ref, dest)
if block_migration:
reason = _("Block migration can not be used "
"with shared storage.")
raise exception.InvalidSharedStorage(reason=reason, path=dest)
except exception.FileNotFound:
if not block_migration:
src = instance_ref['host']
ipath = FLAGS.instances_path
logging.error(_("Cannot confirm tmpfile at %(ipath)s is on "
"same shared storage between %(src)s "
"and %(dest)s.") % locals())
raise
# Checking dest exists.
dservice_refs = db.service_get_all_compute_by_host(context, dest)
dservice_ref = dservice_refs[0]['compute_node'][0]
# Checking original host( where instance was launched at) exists.
try:
oservice_refs = db.service_get_all_compute_by_host(context,
instance_ref['launched_on'])
except exception.NotFound:
raise exception.SourceHostUnavailable()
oservice_ref = oservice_refs[0]['compute_node'][0]
# Checking hypervisor is same.
orig_hypervisor = oservice_ref['hypervisor_type']
dest_hypervisor = dservice_ref['hypervisor_type']
if orig_hypervisor != dest_hypervisor:
raise exception.InvalidHypervisorType()
# Checkng hypervisor version.
orig_hypervisor = oservice_ref['hypervisor_version']
dest_hypervisor = dservice_ref['hypervisor_version']
if orig_hypervisor > dest_hypervisor:
raise exception.DestinationHypervisorTooOld()
# Checking cpuinfo.
try:
rpc.call(context,
db.queue_get_for(context, FLAGS.compute_topic, dest),
{"method": 'compare_cpu',
"args": {'cpu_info': oservice_ref['cpu_info']}})
except rpc.RemoteError:
src = instance_ref['host']
logging.exception(_("host %(dest)s is not compatible with "
"original host %(src)s.") % locals())
raise
