def select_host_to_migrate(self, vm_info):
"""
Get the ID of the HOST to migrate. It selects the HOST with more free memory.
If no node has enough memory or cpus to host the VM to migrate, return None.
"""
host_list = self.cmp.get_host_list()
hosts_mem = {}
# Select the node with more memory free
for host in host_list:
hosts_mem[host] = host.raw.HOST_SHARE.FREE_MEM
hosts_mem = sorted(hosts_mem.items(), key=lambda x: x[1], reverse = True)
cpus = vm_info.raw.TEMPLATE.CPU
if vm_info.total_memory:
free_memory = vm_info.total_memory
else:
# If the monitored total memory is not available use the CMP original allocated one
free_memory = vm_info.allocated_memory
powered = None
while powered != False:
for host, host_mem in hosts_mem:
# ONE FREE_CPU is a Percentage
host_free_cpus = host.raw.HOST_SHARE.FREE_CPU/100
if host.active and host_mem > free_memory and host_free_cpus > cpus:
return host
# only try to poweron a host once
if powered is None:
# Let's try to power on a host
powered = Monitor.power_on_host(free_memory, cpus)
else:
# otherwise continue
powered = False
return None
def select_host_to_migrate(self, vm_info):
"""
Get the ID of the HOST to migrate. It selects the HOST with more free memory.
If no node has enough memory or cpus to host the VM to migrate, return None.
"""
host_list = self.cmp.get_host_list()
hosts_mem = {}
# Select the node with more memory free
for host in host_list:
hosts_mem[host] = host.raw.HOST_SHARE.FREE_MEM
hosts_mem = sorted(hosts_mem.items(), key=lambda x: x[1], reverse = True)
cpus = vm_info.raw.TEMPLATE.CPU
if vm_info.total_memory:
free_memory = vm_info.total_memory
else:
# If the monitored total memory is not available use the CMP original allocated one
free_memory = vm_info.allocated_memory
powered = None
while powered != False:
for host, host_mem in hosts_mem:
# ONE FREE_CPU is a Percentage
host_free_cpus = host.raw.HOST_SHARE.FREE_CPU/100
if host.active and host_mem > free_memory and host_free_cpus > cpus:
return host
# only try to poweron a host once
if powered is None:
# Let's try to power on a host
powered = Monitor.power_on_host(free_memory, cpus)
else:
# otherwise continue
powered = False
return None
def __init__(self, cmpo = None): Monitor.__init__(self, OpenNebula())
def __init__(self, cmpo = None): Monitor.__init__(self, OpenNebula())
