def __estimate_image_transfer_time(self, lease, bandwidth):
config = get_config()
force_transfer_time = config.get("force-imagetransfer-time")
if force_transfer_time != None:
return force_transfer_time
else:
return estimate_transfer_time(lease.software.image_size, bandwidth)
def __estimate_image_transfer_time(self, lease, bandwidth):
config = get_config()
force_transfer_time = config.get("force-imagetransfer-time")
if force_transfer_time != None:
return force_transfer_time
else:
return estimate_transfer_time(lease.software.image_size, bandwidth)
def estimate_migration_time(self, lease):
migration = get_config().get("migration")
if migration == constants.MIGRATE_YES:
vmrr = lease.get_last_vmrr()
images_in_pnode = dict([(pnode,0) for pnode in set(vmrr.nodes.values())])
for (vnode,pnode) in vmrr.nodes.items():
images_in_pnode[pnode] += lease.software.image_size
max_to_transfer = max(images_in_pnode.values())
bandwidth = self.resourcepool.info.get_migration_bandwidth()
return estimate_transfer_time(max_to_transfer, bandwidth)
elif migration == constants.MIGRATE_YES_NOTRANSFER:
return TimeDelta(seconds=0)
def estimate_migration_time(self, lease):
migration = get_config().get("migration")
if migration == constants.MIGRATE_YES:
vmrr = lease.get_last_vmrr()
images_in_pnode = dict([(pnode, 0)
for pnode in set(vmrr.nodes.values())])
for (vnode, pnode) in vmrr.nodes.items():
images_in_pnode[pnode] += lease.software.image_size
max_to_transfer = max(images_in_pnode.values())
bandwidth = self.resourcepool.info.get_migration_bandwidth()
return estimate_transfer_time(max_to_transfer, bandwidth)
elif migration == constants.MIGRATE_YES_NOTRANSFER:
return TimeDelta(seconds=0)
def schedule_migration(self, lease, vmrr, nexttime):
if type(lease.software) == UnmanagedSoftwareEnvironment:
return []
# This code is the same as the one in vm_scheduler
# Should be factored out
last_vmrr = lease.get_last_vmrr()
vnode_mappings = self.resourcepool.get_disk_image_mappings(lease)
vnode_migrations = dict([(vnode, (vnode_mappings[vnode], vmrr.nodes[vnode])) for vnode in vmrr.nodes if vnode_mappings[vnode] != vmrr.nodes[vnode]])
mustmigrate = False
for vnode in vnode_migrations:
if vnode_migrations[vnode][0] != vnode_migrations[vnode][1]:
mustmigrate = True
break
if not mustmigrate:
return []
if get_config().get("migration") == constants.MIGRATE_YES_NOTRANSFER:
start = nexttime
end = nexttime
res = {}
migr_rr = DiskImageMigrationResourceReservation(lease, start, end, res, vmrr, vnode_migrations)
migr_rr.state = ResourceReservation.STATE_SCHEDULED
return [migr_rr]
# Figure out what migrations can be done simultaneously
migrations = []
while len(vnode_migrations) > 0:
pnodes = set()
migration = {}
for vnode in vnode_migrations:
origin = vnode_migrations[vnode][0]
dest = vnode_migrations[vnode][1]
if not origin in pnodes and not dest in pnodes:
migration[vnode] = vnode_migrations[vnode]
pnodes.add(origin)
pnodes.add(dest)
for vnode in migration:
del vnode_migrations[vnode]
migrations.append(migration)
# Create migration RRs
start = max(last_vmrr.post_rrs[-1].end, nexttime)
bandwidth = self.resourcepool.info.get_migration_bandwidth()
migr_rrs = []
for m in migrations:
mb_per_physnode = {}
for vnode, (pnode_from, pnode_to) in m.items():
mb_per_physnode[pnode_from] = mb_per_physnode.setdefault(pnode_from, 0) + lease.software.image_size
max_mb_to_migrate = max(mb_per_physnode.values())
migr_time = estimate_transfer_time(max_mb_to_migrate, bandwidth)
end = start + migr_time
res = {}
for (origin,dest) in m.values():
resorigin = Capacity([constants.RES_NETOUT])
resorigin.set_quantity(constants.RES_NETOUT, bandwidth)
resdest = Capacity([constants.RES_NETIN])
resdest.set_quantity(constants.RES_NETIN, bandwidth)
res[origin] = self.slottable.create_resource_tuple_from_capacity(resorigin)
res[dest] = self.slottable.create_resource_tuple_from_capacity(resdest)
migr_rr = DiskImageMigrationResourceReservation(lease, start, start + migr_time, res, vmrr, m)
migr_rr.state = ResourceReservation.STATE_SCHEDULED
migr_rrs.append(migr_rr)
start = end
return migr_rrs
def schedule_migration(self, lease, vmrr, nexttime):
if type(lease.software) == UnmanagedSoftwareEnvironment:
return []
# This code is the same as the one in vm_scheduler
# Should be factored out
last_vmrr = lease.get_last_vmrr()
vnode_migrations = dict([(vnode, (last_vmrr.nodes[vnode],
vmrr.nodes[vnode]))
for vnode in vmrr.nodes])
mustmigrate = False
for vnode in vnode_migrations:
if vnode_migrations[vnode][0] != vnode_migrations[vnode][1]:
mustmigrate = True
break
if not mustmigrate:
return []
if get_config().get("migration") == constants.MIGRATE_YES_NOTRANSFER:
start = nexttime
end = nexttime
res = {}
migr_rr = DiskImageMigrationResourceReservation(
lease, start, end, res, vmrr, vnode_migrations)
migr_rr.state = ResourceReservation.STATE_SCHEDULED
return [migr_rr]
# Figure out what migrations can be done simultaneously
migrations = []
while len(vnode_migrations) > 0:
pnodes = set()
migration = {}
for vnode in vnode_migrations:
origin = vnode_migrations[vnode][0]
dest = vnode_migrations[vnode][1]
if not origin in pnodes and not dest in pnodes:
migration[vnode] = vnode_migrations[vnode]
pnodes.add(origin)
pnodes.add(dest)
for vnode in migration:
del vnode_migrations[vnode]
migrations.append(migration)
# Create migration RRs
start = max(last_vmrr.post_rrs[-1].end, nexttime)
bandwidth = self.resourcepool.info.get_migration_bandwidth()
migr_rrs = []
for m in migrations:
mb_to_migrate = lease.software.image_size * len(m.keys())
migr_time = estimate_transfer_time(mb_to_migrate, bandwidth)
end = start + migr_time
res = {}
for (origin, dest) in m.values():
resorigin = Capacity([constants.RES_NETOUT])
resorigin.set_quantity(constants.RES_NETOUT, bandwidth)
resdest = Capacity([constants.RES_NETIN])
resdest.set_quantity(constants.RES_NETIN, bandwidth)
res[origin] = self.slottable.create_resource_tuple_from_capacity(
resorigin)
res[dest] = self.slottable.create_resource_tuple_from_capacity(
resdest)
migr_rr = DiskImageMigrationResourceReservation(
lease, start, start + migr_time, res, vmrr, m)
migr_rr.state = ResourceReservation.STATE_SCHEDULED
migr_rrs.append(migr_rr)
start = end
return migr_rrs
