def test_service_is_up(self):
fts_func = datetime.datetime.fromtimestamp
fake_now = 1000
down_time = 5
self.flags(service_down_time=down_time)
self.mox.StubOutWithMock(timeutils, 'utcnow')
# Up (equal)
timeutils.utcnow().AndReturn(fts_func(fake_now))
service = {'updated_at': fts_func(fake_now - down_time),
'created_at': fts_func(fake_now - down_time)}
self.mox.ReplayAll()
result = utils.service_is_up(service)
self.assertTrue(result)
self.mox.ResetAll()
# Up
timeutils.utcnow().AndReturn(fts_func(fake_now))
service = {'updated_at': fts_func(fake_now - down_time + 1),
'created_at': fts_func(fake_now - down_time + 1)}
self.mox.ReplayAll()
result = utils.service_is_up(service)
self.assertTrue(result)
self.mox.ResetAll()
# Down
timeutils.utcnow().AndReturn(fts_func(fake_now))
service = {'updated_at': fts_func(fake_now - down_time - 1),
'created_at': fts_func(fake_now - down_time - 1)}
self.mox.ReplayAll()
result = utils.service_is_up(service)
self.assertFalse(result)
def schedule_create_volume(self, context, volume_id, *_args, **_kwargs):
"""Picks a host that is up and has the fewest volumes."""
elevated = context.elevated()
volume_ref = db.volume_get(context, volume_id)
availability_zone = volume_ref.get("availability_zone")
zone, host = None, None
if availability_zone:
zone, _x, host = availability_zone.partition(":")
if host and context.is_admin:
service = db.service_get_by_args(elevated, host, "cinder-volume")
if not utils.service_is_up(service):
raise exception.WillNotSchedule(host=host)
driver.cast_to_volume_host(context, host, "create_volume", volume_id=volume_id, **_kwargs)
return None
results = db.service_get_all_volume_sorted(elevated)
if zone:
results = [(service, gigs) for (service, gigs) in results if service["availability_zone"] == zone]
for result in results:
(service, volume_gigabytes) = result
if volume_gigabytes + volume_ref["size"] > FLAGS.max_gigabytes:
msg = _("Not enough allocatable volume gigabytes remaining")
raise exception.NoValidHost(reason=msg)
if utils.service_is_up(service) and not service["disabled"]:
driver.cast_to_volume_host(context, service["host"], "create_volume", volume_id=volume_id, **_kwargs)
return None
msg = _("Is the appropriate service running?")
raise exception.NoValidHost(reason=msg)
def test_service_is_up(self, mock_utcnow):
fts_func = datetime.datetime.fromtimestamp
fake_now = 1000
down_time = 5
self.flags(service_down_time=down_time)
mock_utcnow.return_value = fts_func(fake_now)
# Up (equal)
service = {'updated_at': fts_func(fake_now - down_time),
'created_at': fts_func(fake_now - down_time)}
result = utils.service_is_up(service)
self.assertTrue(result)
# Up
service = {'updated_at': fts_func(fake_now - down_time + 1),
'created_at': fts_func(fake_now - down_time + 1)}
result = utils.service_is_up(service)
self.assertTrue(result)
# Down
service = {'updated_at': fts_func(fake_now - down_time - 1),
'created_at': fts_func(fake_now - down_time - 1)}
result = utils.service_is_up(service)
self.assertFalse(result)
def test_service_is_up(self):
fts_func = datetime.datetime.fromtimestamp
fake_now = 1000
down_time = 5
self.flags(service_down_time=down_time)
self.mox.StubOutWithMock(timeutils, 'utcnow')
# Up (equal)
timeutils.utcnow().AndReturn(fts_func(fake_now))
service = {'updated_at': fts_func(fake_now - down_time),
'created_at': fts_func(fake_now - down_time)}
self.mox.ReplayAll()
result = utils.service_is_up(service)
self.assertTrue(result)
self.mox.ResetAll()
# Up
timeutils.utcnow().AndReturn(fts_func(fake_now))
service = {'updated_at': fts_func(fake_now - down_time + 1),
'created_at': fts_func(fake_now - down_time + 1)}
self.mox.ReplayAll()
result = utils.service_is_up(service)
self.assertTrue(result)
self.mox.ResetAll()
# Down
timeutils.utcnow().AndReturn(fts_func(fake_now))
service = {'updated_at': fts_func(fake_now - down_time - 1),
'created_at': fts_func(fake_now - down_time - 1)}
self.mox.ReplayAll()
result = utils.service_is_up(service)
self.assertFalse(result)
def test_service_is_up(self, mock_utcnow):
fts_func = datetime.datetime.fromtimestamp
fake_now = 1000
down_time = 5
self.flags(service_down_time=down_time)
mock_utcnow.return_value = fts_func(fake_now)
# Up (equal)
service = {
'updated_at': fts_func(fake_now - down_time),
'created_at': fts_func(fake_now - down_time)
}
result = utils.service_is_up(service)
self.assertTrue(result)
# Up
service = {
'updated_at': fts_func(fake_now - down_time + 1),
'created_at': fts_func(fake_now - down_time + 1)
}
result = utils.service_is_up(service)
self.assertTrue(result)
# Down
service = {
'updated_at': fts_func(fake_now - down_time - 1),
'created_at': fts_func(fake_now - down_time - 1)
}
result = utils.service_is_up(service)
self.assertFalse(result)
def schedule_create_volume(self, context, volume_id, **_kwargs):
"""Picks a host that is up and has the fewest volumes."""
elevated = context.elevated()
volume_ref = db.volume_get(context, volume_id)
availability_zone = volume_ref.get('availability_zone')
zone, host = None, None
if availability_zone:
zone, _x, host = availability_zone.partition(':')
if host and context.is_admin:
service = db.service_get_by_args(elevated, host, 'cinder-volume')
if not utils.service_is_up(service):
raise exception.WillNotSchedule(host=host)
driver.cast_to_volume_host(context, host, 'create_volume',
volume_id=volume_id, **_kwargs)
return None
results = db.service_get_all_volume_sorted(elevated)
if zone:
results = [(service, gigs) for (service, gigs) in results
if service['availability_zone'] == zone]
for result in results:
(service, volume_gigabytes) = result
if volume_gigabytes + volume_ref['size'] > FLAGS.max_gigabytes:
msg = _("Not enough allocatable volume gigabytes remaining")
raise exception.NoValidHost(reason=msg)
if utils.service_is_up(service) and not service['disabled']:
driver.cast_to_volume_host(context, service['host'],
'create_volume', volume_id=volume_id, **_kwargs)
return None
msg = _("Is the appropriate service running?")
raise exception.NoValidHost(reason=msg)
def schedule_create_volume(self, context, request_spec, filter_properties):
"""Picks a host that is up and has the fewest volumes."""
elevated = context.elevated()
volume_id = request_spec.get('volume_id')
snapshot_id = request_spec.get('snapshot_id')
image_id = request_spec.get('image_id')
volume_properties = request_spec.get('volume_properties')
volume_size = volume_properties.get('size')
availability_zone = volume_properties.get('availability_zone')
zone, host = None, None
if availability_zone:
zone, _x, host = availability_zone.partition(':')
if host and context.is_admin:
topic = CONF.volume_topic
service = db.service_get_by_args(elevated, host, topic)
if not utils.service_is_up(service):
raise exception.WillNotSchedule(host=host)
updated_volume = driver.volume_update_db(context, volume_id, host)
self.volume_rpcapi.create_volume(context,
updated_volume,
host,
request_spec,
filter_properties,
snapshot_id=snapshot_id,
image_id=image_id)
return None
results = db.service_get_all_volume_sorted(elevated)
if zone:
results = [(s, gigs) for (s, gigs) in results
if s['availability_zone'] == zone]
for result in results:
(service, volume_gigabytes) = result
if volume_gigabytes + volume_size > CONF.max_gigabytes:
msg = _("Not enough allocatable volume gigabytes remaining")
raise exception.NoValidHost(reason=msg)
if utils.service_is_up(service) and not service['disabled']:
updated_volume = driver.volume_update_db(
context, volume_id, service['host'])
self.volume_rpcapi.create_volume(context,
updated_volume,
service['host'],
request_spec,
filter_properties,
snapshot_id=snapshot_id,
image_id=image_id)
return None
msg = _("Is the appropriate service running?")
raise exception.NoValidHost(reason=msg)
def test_hosts_up(self):
service1 = {"host": "host1"}
service2 = {"host": "host2"}
services = [service1, service2]
self.mox.StubOutWithMock(db, "service_get_all_by_topic")
self.mox.StubOutWithMock(utils, "service_is_up")
db.service_get_all_by_topic(self.context, self.topic).AndReturn(services)
utils.service_is_up(service1).AndReturn(False)
utils.service_is_up(service2).AndReturn(True)
self.mox.ReplayAll()
result = self.driver.hosts_up(self.context, self.topic)
self.assertEqual(result, ["host2"])
def list(self):
"""Show a list of all cinder services."""
ctxt = context.get_admin_context()
services = objects.ServiceList.get_all(ctxt)
print_format = "%-16s %-36s %-16s %-10s %-5s %-20s %-12s %-15s %-36s"
print(print_format % (_('Binary'),
_('Host'),
_('Zone'),
_('Status'),
_('State'),
_('Updated At'),
_('RPC Version'),
_('Object Version'),
_('Cluster')))
for svc in services:
art = self._state_repr(utils.service_is_up(svc))
status = 'disabled' if svc.disabled else 'enabled'
updated_at = self._normalize_time(svc.updated_at)
rpc_version = (svc.rpc_current_version or
rpc.LIBERTY_RPC_VERSIONS.get(svc.binary, ''))
object_version = (svc.object_current_version or 'liberty')
cluster = svc.cluster_name or ''
print(print_format % (svc.binary, svc.host.partition('.')[0],
svc.availability_zone, status, art,
updated_at, rpc_version, object_version,
cluster))
def test_hosts_up(self):
service1 = {'host': 'host1'}
service2 = {'host': 'host2'}
services = [service1, service2]
self.mox.StubOutWithMock(db, 'service_get_all_by_topic')
self.mox.StubOutWithMock(utils, 'service_is_up')
db.service_get_all_by_topic(self.context,
self.topic).AndReturn(services)
utils.service_is_up(service1).AndReturn(False)
utils.service_is_up(service2).AndReturn(True)
self.mox.ReplayAll()
result = self.driver.hosts_up(self.context, self.topic)
self.assertEqual(result, ['host2'])
def test_hosts_up(self):
service1 = {'host': 'host1'}
service2 = {'host': 'host2'}
services = [service1, service2]
self.mox.StubOutWithMock(db, 'service_get_all_by_topic')
self.mox.StubOutWithMock(utils, 'service_is_up')
db.service_get_all_by_topic(self.context,
self.topic).AndReturn(services)
utils.service_is_up(service1).AndReturn(False)
utils.service_is_up(service2).AndReturn(True)
self.mox.ReplayAll()
result = self.driver.hosts_up(self.context, self.topic)
self.assertEqual(result, ['host2'])
def hosts_up(self, context, topic):
"""Return the list of hosts that have a running service for topic."""
services = db.service_get_all_by_topic(context, topic)
return [service['host']
for service in services
if utils.service_is_up(service)]
def get_all_host_states(self, context):
"""Returns a dict of all the hosts the HostManager
knows about. Also, each of the consumable resources in HostState
are pre-populated and adjusted based on data in the db.
For example:
{'192.168.1.100': HostState(), ...}
"""
# Get resource usage across the available volume nodes:
topic = CONF.volume_topic
volume_services = db.service_get_all_by_topic(context, topic)
self.host_state_map.clear()
for service in volume_services:
host = service['host']
if not utils.service_is_up(service) or service['disabled']:
LOG.warn(_("volume service is down or disabled. "
"(host: %s)") % host)
continue
capabilities = self.service_states.get(host, None)
host_state = self.host_state_map.get(host)
if host_state:
# copy capabilities to host_state.capabilities
host_state.update_capabilities(capabilities,
dict(service.iteritems()))
else:
host_state = self.host_state_cls(host,
capabilities=capabilities,
service=
dict(service.iteritems()))
self.host_state_map[host] = host_state
# update host_state
host_state.update_from_volume_capability(capabilities)
return self.host_state_map.itervalues()
def migrate_volume(self, context, volume, host, force_host_copy):
"""Migrate the volume to the specified host."""
# We only handle "available" volumes for now
if volume['status'] not in ['available', 'in-use']:
msg = _('Volume status must be available/in-use.')
LOG.error(msg)
raise exception.InvalidVolume(reason=msg)
# Make sure volume is not part of a migration
if volume['migration_status'] is not None:
msg = _("Volume is already part of an active migration")
raise exception.InvalidVolume(reason=msg)
# We only handle volumes without snapshots for now
snaps = self.db.snapshot_get_all_for_volume(context, volume['id'])
if snaps:
msg = _("volume must not have snapshots")
LOG.error(msg)
raise exception.InvalidVolume(reason=msg)
# Make sure the host is in the list of available hosts
elevated = context.elevated()
topic = CONF.volume_topic
services = self.db.service_get_all_by_topic(elevated,
topic,
disabled=False)
found = False
for service in services:
if utils.service_is_up(service) and service['host'] == host:
found = True
if not found:
msg = (_('No available service named %s') % host)
LOG.error(msg)
raise exception.InvalidHost(reason=msg)
# Make sure the destination host is different than the current one
if host == volume['host']:
msg = _('Destination host must be different than current host')
LOG.error(msg)
raise exception.InvalidHost(reason=msg)
self.update(context, volume, {'migration_status': 'starting'})
# Call the scheduler to ensure that the host exists and that it can
# accept the volume
volume_type = {}
volume_type_id = volume['volume_type_id']
if volume_type_id:
volume_type = volume_types.get_volume_type(context, volume_type_id)
request_spec = {
'volume_properties': volume,
'volume_type': volume_type,
'volume_id': volume['id']
}
self.scheduler_rpcapi.migrate_volume_to_host(context,
CONF.volume_topic,
volume['id'], host,
force_host_copy,
request_spec)
def hosts_up(self, context, topic):
"""Return the list of hosts that have a running service for topic."""
services = db.service_get_all_by_topic(context, topic)
return [service['host']
for service in services
if utils.service_is_up(service)]
def _update_host_state_map(self, context):
# Get resource usage across the available volume nodes:
topic = CONF.volume_topic
volume_services = db.service_get_all_by_topic(context,
topic,
disabled=False)
active_hosts = set()
for service in volume_services:
host = service['host']
if not utils.service_is_up(service):
LOG.warn(_LW("volume service is down. (host: %s)") % host)
continue
capabilities = self.service_states.get(host, None)
host_state = self.host_state_map.get(host)
if not host_state:
host_state = self.host_state_cls(host,
capabilities=capabilities,
service=
dict(service.iteritems()))
self.host_state_map[host] = host_state
# update capabilities and attributes in host_state
host_state.update_from_volume_capability(capabilities,
service=
dict(service.iteritems()))
active_hosts.add(host)
# remove non-active hosts from host_state_map
nonactive_hosts = set(self.host_state_map.keys()) - active_hosts
for host in nonactive_hosts:
LOG.info(_LI("Removing non-active host: %(host)s from "
"scheduler cache.") % {'host': host})
del self.host_state_map[host]
def list(self):
"""Show a list of all cinder services."""
ctxt = context.get_admin_context()
services = objects.ServiceList.get_all(ctxt)
print_format = "%-16s %-36s %-16s %-10s %-5s %-20s %-12s %-15s %-36s"
print(print_format % (_('Binary'),
_('Host'),
_('Zone'),
_('Status'),
_('State'),
_('Updated At'),
_('RPC Version'),
_('Object Version'),
_('Cluster')))
for svc in services:
art = self._state_repr(utils.service_is_up(svc))
status = 'disabled' if svc.disabled else 'enabled'
updated_at = self._normalize_time(svc.updated_at)
rpc_version = svc.rpc_current_version
object_version = svc.object_current_version
cluster = svc.cluster_name or ''
print(print_format % (svc.binary, svc.host.partition('.')[0],
svc.availability_zone, status, art,
updated_at, rpc_version, object_version,
cluster))
def _update_host_state_map(self, context):
# Get resource usage across the available volume nodes:
topic = CONF.volume_topic
volume_services = db.service_get_all_by_topic(context,
topic,
disabled=False)
active_hosts = set()
for service in volume_services:
host = service['host']
if not utils.service_is_up(service):
LOG.warn(_LW("volume service is down. (host: %s)") % host)
continue
capabilities = self.service_states.get(host, None)
host_state = self.host_state_map.get(host)
if not host_state:
host_state = self.host_state_cls(host,
capabilities=capabilities,
service=dict(
service.iteritems()))
self.host_state_map[host] = host_state
# update capabilities and attributes in host_state
host_state.update_from_volume_capability(capabilities,
service=dict(
service.iteritems()))
active_hosts.add(host)
# remove non-active hosts from host_state_map
nonactive_hosts = set(self.host_state_map.keys()) - active_hosts
for host in nonactive_hosts:
LOG.info(
_LI("Removing non-active host: %(host)s from "
"scheduler cache.") % {'host': host})
del self.host_state_map[host]
def get_all_host_states(self, context):
"""Returns a dict of all the hosts the HostManager
knows about. Also, each of the consumable resources in HostState
are pre-populated and adjusted based on data in the db.
For example:
{'192.168.1.100': HostState(), ...}
"""
# Get resource usage across the available volume nodes:
topic = FLAGS.volume_topic
volume_services = db.service_get_all_by_topic(context, topic)
for service in volume_services:
if not utils.service_is_up(service) or service['disabled']:
LOG.warn(_("service is down or disabled."))
continue
host = service['host']
capabilities = self.service_states.get(host, None)
host_state = self.host_state_map.get(host)
if host_state:
# copy capabilities to host_state.capabilities
host_state.update_capabilities(capabilities,
dict(service.iteritems()))
else:
host_state = self.host_state_cls(host,
capabilities=capabilities,
service=dict(
service.iteritems()))
self.host_state_map[host] = host_state
# update host_state
host_state.update_from_volume_capability(capabilities)
return self.host_state_map.itervalues()
def list(self):
"""Show a list of all cinder services."""
ctxt = context.get_admin_context()
services = objects.ServiceList.get_all(ctxt)
print_format = "%-16s %-36s %-16s %-10s %-5s %-20s %-12s %-15s"
print(print_format % (_('Binary'),
_('Host'),
_('Zone'),
_('Status'),
_('State'),
_('Updated At'),
_('RPC Version'),
_('Object Version')))
for svc in services:
alive = utils.service_is_up(svc)
art = ":-)" if alive else "XXX"
status = 'enabled'
if svc.disabled:
status = 'disabled'
updated_at = svc.updated_at
if updated_at:
updated_at = timeutils.normalize_time(updated_at)
rpc_version = (svc.rpc_current_version or
rpc.LIBERTY_RPC_VERSIONS.get(svc.binary, ''))
object_version = (svc.object_current_version or 'liberty')
print(print_format % (svc.binary, svc.host.partition('.')[0],
svc.availability_zone, status, art,
updated_at, rpc_version,
object_version))
def schedule_create_volume(self, context, request_spec, filter_properties):
"""Picks a host that is up and has the fewest volumes."""
elevated = context.elevated()
volume_id = request_spec.get('volume_id')
snapshot_id = request_spec.get('snapshot_id')
image_id = request_spec.get('image_id')
volume_properties = request_spec.get('volume_properties')
volume_size = volume_properties.get('size')
availability_zone = volume_properties.get('availability_zone')
zone, host = None, None
if availability_zone:
zone, _x, host = availability_zone.partition(':')
if host and context.is_admin:
topic = FLAGS.volume_topic
service = db.service_get_by_args(elevated, host, topic)
if not utils.service_is_up(service):
raise exception.WillNotSchedule(host=host)
updated_volume = driver.volume_update_db(context, volume_id, host)
self.volume_rpcapi.create_volume(context,
updated_volume,
host,
snapshot_id,
image_id)
return None
results = db.service_get_all_volume_sorted(elevated)
if zone:
results = [(service, gigs) for (service, gigs) in results
if service['availability_zone'] == zone]
for result in results:
(service, volume_gigabytes) = result
if volume_gigabytes + volume_size > FLAGS.max_gigabytes:
msg = _("Not enough allocatable volume gigabytes remaining")
raise exception.NoValidHost(reason=msg)
if utils.service_is_up(service) and not service['disabled']:
updated_volume = driver.volume_update_db(context, volume_id,
service['host'])
self.volume_rpcapi.create_volume(context,
updated_volume,
service['host'],
snapshot_id,
image_id)
return None
msg = _("Is the appropriate service running?")
raise exception.NoValidHost(reason=msg)
def migrate_volume(self, context, volume, host, force_host_copy):
"""Migrate the volume to the specified host."""
# We only handle "available" volumes for now
if volume['status'] not in ['available', 'in-use']:
msg = _('Volume status must be available/in-use.')
LOG.error(msg)
raise exception.InvalidVolume(reason=msg)
# Make sure volume is not part of a migration
if volume['migration_status'] is not None:
msg = _("Volume is already part of an active migration")
raise exception.InvalidVolume(reason=msg)
# We only handle volumes without snapshots for now
snaps = self.db.snapshot_get_all_for_volume(context, volume['id'])
if snaps:
msg = _("volume must not have snapshots")
LOG.error(msg)
raise exception.InvalidVolume(reason=msg)
# Make sure the host is in the list of available hosts
elevated = context.elevated()
topic = CONF.volume_topic
services = self.db.service_get_all_by_topic(elevated,
topic,
disabled=False)
found = False
for service in services:
if utils.service_is_up(service) and service['host'] == host:
found = True
if not found:
msg = (_('No available service named %s') % host)
LOG.error(msg)
raise exception.InvalidHost(reason=msg)
# Make sure the destination host is different than the current one
if host == volume['host']:
msg = _('Destination host must be different than current host')
LOG.error(msg)
raise exception.InvalidHost(reason=msg)
self.update(context, volume, {'migration_status': 'starting'})
# Call the scheduler to ensure that the host exists and that it can
# accept the volume
volume_type = {}
volume_type_id = volume['volume_type_id']
if volume_type_id:
volume_type = volume_types.get_volume_type(context, volume_type_id)
request_spec = {'volume_properties': volume,
'volume_type': volume_type,
'volume_id': volume['id']}
self.scheduler_rpcapi.migrate_volume_to_host(context,
CONF.volume_topic,
volume['id'],
host,
force_host_copy,
request_spec)
def _is_backup_service_enabled(self, volume, volume_host):
"""Check if there is a backup service available."""
topic = CONF.backup_topic
ctxt = context.get_admin_context()
services = self.db.service_get_all_by_topic(ctxt, topic)
for srv in services:
if (srv['availability_zone'] == volume['availability_zone'] and
srv['host'] == volume_host and not srv['disabled'] and
utils.service_is_up(srv)):
return True
return False
def get_all_host_states(self, context):
"""Returns a dict of all the hosts the HostManager knows about.
Each of the consumable resources in HostState are
populated with capabilities scheduler received from RPC.
For example:
{'192.168.1.100': HostState(), ...}
"""
# Get resource usage across the available volume nodes:
topic = CONF.volume_topic
volume_services = db.service_get_all_by_topic(context,
topic,
disabled=False)
active_hosts = set()
for service in volume_services:
host = service['host']
if not utils.service_is_up(service):
LOG.warn(_("volume service is down. (host: %s)") % host)
continue
capabilities = self.service_states.get(host, None)
host_state = self.host_state_map.get(host)
if not host_state:
host_state = self.host_state_cls(host,
capabilities=capabilities,
service=dict(
service.iteritems()))
self.host_state_map[host] = host_state
# update capabilities and attributes in host_state
host_state.update_from_volume_capability(capabilities,
service=dict(
service.iteritems()))
active_hosts.add(host)
# remove non-active hosts from host_state_map
nonactive_hosts = set(self.host_state_map.keys()) - active_hosts
for host in nonactive_hosts:
LOG.info(
_("Removing non-active host: %(host)s from "
"scheduler cache.") % {'host': host})
del self.host_state_map[host]
# build a pool_state map and return that map instead of host_state_map
all_pools = {}
for host in active_hosts:
state = self.host_state_map[host]
for key in state.pools:
pool = state.pools[key]
# use host.pool_name to make sure key is unique
pool_key = '.'.join([host, pool.pool_name])
all_pools[pool_key] = pool
return all_pools.itervalues()
def _check_backup_service(self, volume):
"""Check if there is an backup service available"""
topic = CONF.backup_topic
ctxt = context.get_admin_context()
services = self.db.service_get_all_by_topic(ctxt, topic)
for srv in services:
if (srv['availability_zone'] == volume['availability_zone']
and srv['host'] == volume['host'] and not srv['disabled']
and utils.service_is_up(srv)):
return True
return False
def _is_backup_service_enabled(self, volume, volume_host):
"""Check if there is a backup service available."""
topic = CONF.backup_topic
ctxt = context.get_admin_context()
services = objects.ServiceList.get_all_by_topic(
ctxt, topic, disabled=False)
for srv in services:
if (srv.availability_zone == volume['availability_zone'] and
srv.host == volume_host and
utils.service_is_up(srv)):
return True
return False
def _is_backup_service_enabled(self, availability_zone, host):
"""Check if there is a backup service available."""
topic = constants.BACKUP_TOPIC
ctxt = context.get_admin_context()
services = objects.ServiceList.get_all_by_topic(
ctxt, topic, disabled=False)
for srv in services:
if (self._az_matched(srv, availability_zone) and
srv.host == host and
utils.service_is_up(srv)):
return True
return False
def _is_backup_service_enabled(self, availability_zone, host):
"""Check if there is a backup service available."""
topic = CONF.backup_topic
ctxt = context.get_admin_context()
services = objects.ServiceList.get_all_by_topic(ctxt,
topic,
disabled=False)
for srv in services:
if (self._az_matched(srv, availability_zone) and srv.host == host
and utils.service_is_up(srv)):
return True
return False
def get_all_host_states(self, context):
"""Returns a dict of all the hosts the HostManager knows about.
Each of the consumable resources in HostState are
populated with capabilities scheduler received from RPC.
For example:
{'192.168.1.100': HostState(), ...}
"""
# Get resource usage across the available volume nodes:
topic = CONF.volume_topic
volume_services = db.service_get_all_by_topic(context,
topic,
disabled=False)
active_hosts = set()
for service in volume_services:
host = service['host']
if not utils.service_is_up(service):
LOG.warn(_("volume service is down. (host: %s)") % host)
continue
capabilities = self.service_states.get(host, None)
host_state = self.host_state_map.get(host)
if not host_state:
host_state = self.host_state_cls(host,
capabilities=capabilities,
service=
dict(service.iteritems()))
self.host_state_map[host] = host_state
# update capabilities and attributes in host_state
host_state.update_from_volume_capability(capabilities,
service=
dict(service.iteritems()))
active_hosts.add(host)
# remove non-active hosts from host_state_map
nonactive_hosts = set(self.host_state_map.keys()) - active_hosts
for host in nonactive_hosts:
LOG.info(_LI("Removing non-active host: %(host)s from "
"scheduler cache.") % {'host': host})
del self.host_state_map[host]
# build a pool_state map and return that map instead of host_state_map
all_pools = {}
for host in active_hosts:
state = self.host_state_map[host]
for key in state.pools:
pool = state.pools[key]
# use host.pool_name to make sure key is unique
pool_key = '.'.join([host, pool.pool_name])
all_pools[pool_key] = pool
return all_pools.itervalues()
def _is_backup_service_enabled(self, volume, volume_host):
"""Check if there is a backup service available."""
topic = CONF.backup_topic
ctxt = context.get_admin_context()
services = self.db.service_get_all_by_topic(ctxt,
topic,
disabled=False)
for srv in services:
if (srv['availability_zone'] == volume['availability_zone'] and
srv['host'] == volume_host and
utils.service_is_up(srv)):
return True
return False
def _get_weighted_candidates(self, context, topic, request_spec, **kwargs):
"""Picks a host that is up and has the fewest volumes."""
elevated = context.elevated()
volume_id = request_spec.get('volume_id')
snapshot_id = request_spec.get('snapshot_id')
image_id = request_spec.get('image_id')
volume_properties = request_spec.get('volume_properties')
volume_size = volume_properties.get('size')
availability_zone = volume_properties.get('availability_zone')
filter_properties = kwargs.get('filter_properties', {})
zone, host = None, None
if availability_zone:
zone, _x, host = availability_zone.partition(':')
if host and context.is_admin:
service = db.service_get_by_args(elevated, host, topic)
if not utils.service_is_up(service):
raise exception.WillNotSchedule(host=host)
return [host]
candidates = []
results = db.service_get_all_volume_sorted(elevated)
if zone:
results = [(s, gigs) for (s, gigs) in results
if s['availability_zone'] == zone]
for result in results:
(service, volume_gigabytes) = result
no_skip = service['host'] != filter_properties.get('vol_exists_on')
if no_skip and volume_gigabytes + volume_size > CONF.max_gigabytes:
continue
if utils.service_is_up(service) and not service['disabled']:
candidates.append(service['host'])
if candidates:
return candidates
else:
msg = _("No service with adequate space or no service running")
raise exception.NoValidHost(reason=msg)
def _schedule_instance(self, context, instance_opts, *_args, **_kwargs):
"""Picks a host that is up and has the fewest running instances."""
elevated = context.elevated()
availability_zone = instance_opts.get('availability_zone')
zone, host = FLAGS.default_schedule_zone, None
if availability_zone:
zone, _x, host = availability_zone.partition(':')
if host and context.is_admin:
service = db.service_get_by_args(elevated, host, 'cinder-compute')
if not utils.service_is_up(service):
raise exception.WillNotSchedule(host=host)
return host
results = db.service_get_all_compute_sorted(elevated)
in_isolation = instance_opts['image_ref'] in FLAGS.isolated_images
check_cores = not in_isolation or not FLAGS.skip_isolated_core_check
if zone:
results = [(service, cores) for (service, cores) in results
if service['availability_zone'] == zone]
for result in results:
(service, instance_cores) = result
if in_isolation and service['host'] not in FLAGS.isolated_hosts:
# isloated images run on isolated hosts
continue
if service['host'] in FLAGS.isolated_hosts and not in_isolation:
# images that aren't isolated only run on general hosts
continue
if (check_cores and
instance_cores + instance_opts['vcpus'] > FLAGS.max_cores):
msg = _("Not enough allocatable CPU cores remaining")
raise exception.NoValidHost(reason=msg)
if utils.service_is_up(service) and not service['disabled']:
return service['host']
msg = _("Is the appropriate service running?")
raise exception.NoValidHost(reason=msg)
def _check_backup_service(self, volume):
"""Check if there is an backup service available"""
topic = CONF.backup_topic
ctxt = context.get_admin_context()
services = self.db.service_get_all_by_topic(ctxt, topic)
for srv in services:
if (
srv["availability_zone"] == volume["availability_zone"]
and srv["host"] == volume["host"]
and not srv["disabled"]
and utils.service_is_up(srv)
):
return True
return False
def list(self):
"""Show a list of all cinder services."""
ctxt = context.get_admin_context()
services = db.service_get_all(ctxt)
print_format = "%-16s %-36s %-16s %-10s %-5s %-10s"
print(print_format % (_('Binary'), _('Host'), _('Zone'), _('Status'),
_('State'), _('Updated At')))
for svc in services:
alive = utils.service_is_up(svc)
art = ":-)" if alive else "XXX"
status = 'enabled'
if svc['disabled']:
status = 'disabled'
print(print_format %
(svc['binary'], svc['host'].partition('.')[0],
svc['availability_zone'], status, art, svc['updated_at']))
def get_all_host_states(self, context):
"""Returns a dict of all the hosts the HostManager knows about.
Each of the consumable resources in HostState are
populated with capabilities scheduler received from RPC.
For example:
{'192.168.1.100': HostState(), ...}
"""
# Get resource usage across the available volume nodes:
topic = CONF.volume_topic
volume_services = db.service_get_all_by_topic(context, topic)
active_hosts = set()
for service in volume_services:
host = service['host']
if not utils.service_is_up(service) or service['disabled']:
LOG.warn(_("volume service is down or disabled. "
"(host: %s)") % host)
continue
capabilities = self.service_states.get(host, None)
host_state = self.host_state_map.get(host)
if host_state:
# copy capabilities to host_state.capabilities
host_state.update_capabilities(capabilities,
dict(service.iteritems()))
else:
host_state = self.host_state_cls(host,
capabilities=capabilities,
service=
dict(service.iteritems()))
self.host_state_map[host] = host_state
# update attributes in host_state that scheduler is interested in
host_state.update_from_volume_capability(capabilities)
active_hosts.add(host)
if context.host and context.host == host:
active_hosts = set()
active_hosts.add(host)
break
# remove non-active hosts from host_state_map
nonactive_hosts = set(self.host_state_map.keys()) - active_hosts
for host in nonactive_hosts:
LOG.info(_("Removing non-active host: %(host)s from "
"scheduler cache.") % {'host': host})
del self.host_state_map[host]
return self.host_state_map.itervalues()
def get_all_host_states(self, context):
"""Returns a dict of all the hosts the HostManager knows about.
Each of the consumable resources in HostState are
populated with capabilities scheduler received from RPC.
For example:
{'192.168.1.100': HostState(), ...}
"""
# Get resource usage across the available volume nodes:
topic = CONF.volume_topic
volume_services = db.service_get_all_by_topic(context,
topic,
disabled=False)
active_hosts = set()
for service in volume_services:
host = service['host']
if not utils.service_is_up(service):
LOG.warn(_("volume service is down. (host: %s)") % host)
continue
capabilities = self.service_states.get(host, None)
host_state = self.host_state_map.get(host)
if host_state:
# copy capabilities to host_state.capabilities
host_state.update_capabilities(capabilities,
dict(service.iteritems()))
else:
host_state = self.host_state_cls(host,
capabilities=capabilities,
service=dict(
service.iteritems()))
self.host_state_map[host] = host_state
# update attributes in host_state that scheduler is interested in
host_state.update_from_volume_capability(capabilities)
active_hosts.add(host)
# remove non-active hosts from host_state_map
nonactive_hosts = set(self.host_state_map.keys()) - active_hosts
for host in nonactive_hosts:
LOG.info(
_("Removing non-active host: %(host)s from "
"scheduler cache.") % {'host': host})
del self.host_state_map[host]
return self.host_state_map.itervalues()
def _get_any_available_backup_service(self, availability_zone):
"""Get an available backup service host.
Get an available backup service host in the specified
availability zone.
"""
services = [srv for srv in self._list_backup_services()]
random.shuffle(services)
# Get the next running service with matching availability zone.
idx = 0
while idx < len(services):
srv = services[idx]
if(self._az_matched(srv, availability_zone) and
utils.service_is_up(srv)):
return srv.host
idx = idx + 1
return None
def list(self):
"""Show a list of all cinder services."""
ctxt = context.get_admin_context()
services = objects.ServiceList.get_all(ctxt)
print_format = "%-16s %-36s %-16s %-10s %-5s %-10s"
print(print_format % (_('Binary'), _('Host'), _('Zone'), _('Status'),
_('State'), _('Updated At')))
for svc in services:
alive = utils.service_is_up(svc)
art = ":-)" if alive else "XXX"
status = 'enabled'
if svc.disabled:
status = 'disabled'
print(
print_format %
(svc.binary, svc.host.partition('.')[0], svc.availability_zone,
status, art, timeutils.normalize_time(svc.updated_at)))
def _get_any_available_backup_service(self, availability_zone):
"""Get an available backup service host.
Get an available backup service host in the specified
availability zone.
"""
services = [srv for srv in self._list_backup_services()]
random.shuffle(services)
# Get the next running service with matching availability zone.
idx = 0
while idx < len(services):
srv = services[idx]
if (self._az_matched(srv, availability_zone)
and utils.service_is_up(srv)):
return srv.host
idx = idx + 1
return None
def list(self):
"""Show a list of all cinder services."""
ctxt = context.get_admin_context()
services = objects.ServiceList.get_all(ctxt)
print_format = "%-16s %-36s %-16s %-10s %-5s %-10s"
print(print_format % (_("Binary"), _("Host"), _("Zone"), _("Status"), _("State"), _("Updated At")))
for svc in services:
alive = utils.service_is_up(svc)
art = ":-)" if alive else "XXX"
status = "enabled"
if svc.disabled:
status = "disabled"
updated_at = svc.updated_at
if updated_at:
updated_at = timeutils.normalize_time(updated_at)
print(
print_format % (svc.binary, svc.host.partition(".")[0], svc.availability_zone, status, art, updated_at)
)
def list(self):
"""Show a list of all cinder services."""
ctxt = context.get_admin_context()
services = db.service_get_all(ctxt)
print_format = "%-16s %-36s %-16s %-10s %-5s %-10s"
print(print_format % (_('Binary'),
_('Host'),
_('Zone'),
_('Status'),
_('State'),
_('Updated At')))
for svc in services:
alive = utils.service_is_up(svc)
art = ":-)" if alive else "XXX"
status = 'enabled'
if svc['disabled']:
status = 'disabled'
print(print_format % (svc['binary'], svc['host'].partition('.')[0],
svc['availability_zone'], status, art,
svc['updated_at']))
def list(self):
"""Show a list of all cinder services."""
ctxt = context.get_admin_context()
services = objects.ServiceList.get_all(ctxt)
print_format = "%-16s %-36s %-16s %-10s %-5s %-10s"
print(print_format % (_('Binary'),
_('Host'),
_('Zone'),
_('Status'),
_('State'),
_('Updated At')))
for svc in services:
alive = utils.service_is_up(svc)
art = ":-)" if alive else "XXX"
status = 'enabled'
if svc.disabled:
status = 'disabled'
print(print_format % (svc.binary, svc.host.partition('.')[0],
svc.availability_zone, status, art,
timeutils.normalize_time(svc.updated_at)))
def _update_host_state_map(self, context):
# Get resource usage across the available volume nodes:
topic = constants.VOLUME_TOPIC
volume_services = objects.ServiceList.get_all_by_topic(context,
topic,
disabled=False)
active_hosts = set()
no_capabilities_hosts = set()
for service in volume_services.objects:
host = service.host
if not utils.service_is_up(service):
LOG.warning(_LW("volume service is down. (host: %s)"), host)
continue
capabilities = self.service_states.get(host, None)
if capabilities is None:
no_capabilities_hosts.add(host)
continue
host_state = self.host_state_map.get(host)
if not host_state:
host_state = self.host_state_cls(host,
capabilities=capabilities,
service=
dict(service))
self.host_state_map[host] = host_state
# update capabilities and attributes in host_state
host_state.update_from_volume_capability(capabilities,
service=
dict(service))
active_hosts.add(host)
self._no_capabilities_hosts = no_capabilities_hosts
# remove non-active hosts from host_state_map
nonactive_hosts = set(self.host_state_map.keys()) - active_hosts
for host in nonactive_hosts:
LOG.info(_LI("Removing non-active host: %(host)s from "
"scheduler cache."), {'host': host})
del self.host_state_map[host]
def list(self):
"""Show a list of all cinder services."""
ctxt = context.get_admin_context()
services = db.service_get_all(ctxt)
print_format = "%-16s %-36s %-16s %-10s %-5s %-10s"
print(print_format % (_("Binary"), _("Host"), _("Zone"), _("Status"), _("State"), _("Updated At")))
for svc in services:
alive = utils.service_is_up(svc)
art = ":-)" if alive else "XXX"
status = "enabled"
if svc["disabled"]:
status = "disabled"
print(
print_format
% (
svc["binary"],
svc["host"].partition(".")[0],
svc["availability_zone"],
status,
art,
svc["updated_at"],
)
)
def list(self):
"""Show a list of all cinder services."""
ctxt = context.get_admin_context()
services = objects.ServiceList.get_all(ctxt)
print_format = "%-16s %-36s %-16s %-10s %-5s %-20s %-12s %-15s"
print(print_format %
(_('Binary'), _('Host'), _('Zone'), _('Status'), _('State'),
_('Updated At'), _('RPC Version'), _('Object Version')))
for svc in services:
alive = utils.service_is_up(svc)
art = ":-)" if alive else "XXX"
status = 'enabled'
if svc.disabled:
status = 'disabled'
updated_at = svc.updated_at
if updated_at:
updated_at = timeutils.normalize_time(updated_at)
rpc_version = (svc.rpc_current_version
or rpc.LIBERTY_RPC_VERSIONS.get(svc.binary, ''))
object_version = (svc.object_current_version or 'liberty')
print(
print_format %
(svc.binary, svc.host.partition('.')[0], svc.availability_zone,
status, art, updated_at, rpc_version, object_version))
def migrate_volume(self, context, volume, host, force_host_copy):
"""Migrate the volume to the specified host."""
# We only handle "available" volumes for now
if volume["status"] not in ["available", "in-use"]:
msg = _("Volume status must be available/in-use.")
LOG.error(msg)
raise exception.InvalidVolume(reason=msg)
# Make sure volume is not part of a migration
if volume["migration_status"] is not None:
msg = _("Volume is already part of an active migration")
raise exception.InvalidVolume(reason=msg)
# We only handle volumes without snapshots for now
snaps = self.db.snapshot_get_all_for_volume(context, volume["id"])
if snaps:
msg = _("volume must not have snapshots")
LOG.error(msg)
raise exception.InvalidVolume(reason=msg)
# We only handle non-replicated volumes for now
rep_status = volume["replication_status"]
if rep_status is not None and rep_status != "disabled":
msg = _("Volume must not be replicated.")
LOG.error(msg)
raise exception.InvalidVolume(reason=msg)
cg_id = volume.get("consistencygroup_id", None)
if cg_id:
msg = _("Volume must not be part of a consistency group.")
LOG.error(msg)
raise exception.InvalidVolume(reason=msg)
# Make sure the host is in the list of available hosts
elevated = context.elevated()
topic = CONF.volume_topic
services = self.db.service_get_all_by_topic(elevated, topic, disabled=False)
found = False
for service in services:
svc_host = volume_utils.extract_host(host, "backend")
if utils.service_is_up(service) and service["host"] == svc_host:
found = True
if not found:
msg = _("No available service named %s") % host
LOG.error(msg)
raise exception.InvalidHost(reason=msg)
# Make sure the destination host is different than the current one
if host == volume["host"]:
msg = _("Destination host must be different than current host")
LOG.error(msg)
raise exception.InvalidHost(reason=msg)
self.update(context, volume, {"migration_status": "starting"})
# Call the scheduler to ensure that the host exists and that it can
# accept the volume
volume_type = {}
volume_type_id = volume["volume_type_id"]
if volume_type_id:
volume_type = volume_types.get_volume_type(context, volume_type_id)
request_spec = {"volume_properties": volume, "volume_type": volume_type, "volume_id": volume["id"]}
self.scheduler_rpcapi.migrate_volume_to_host(
context, CONF.volume_topic, volume["id"], host, force_host_copy, request_spec
)
def _list_backup_hosts(self):
services = self._list_backup_services()
return [
srv.host for srv in services
if not srv.disabled and utils.service_is_up(srv)
]
def _list_backup_hosts(self):
services = self._list_backup_services()
return [srv.host for srv in services
if not srv.disabled and utils.service_is_up(srv)]