def configure_vm_reservation(options,
vm_name,
cpu_reservation=None,
memory_reservation=None,
mhz_per_core=None):
"""
Routine to run configure VMs reservations for cpu and memory when given
in percents of total allocated
@type vm_name: string
@param vm_name: name of the VM
@type cpu_reservation: int
@param cpu_reservation: percent of the CPU to be reserved per allocated
@type memory_reservation: int
@param memory_reservation: percent of the memory to be reserved per
allocated
@type mhz_per_core: int
@param mhz_per_core: MHz per core as exposed to VM
@raise ValueError: if vm is not found
@raise Exception: if updating of cpu/memory reservation errors
"""
log = logging.getLogger('vdnet')
vm = nsx_network.get_vm_by_name(options, vm_name)
if vm is not None:
resource_spec = Vim.ResourceConfigSpec()
resource_spec.entity = vm
if cpu_reservation is not None:
if mhz_per_core is None:
mhz_per_core = 1000 # BUG: 1420892 Assuming each core is 1GHz
cpu_reservation = int((vm.config.hardware.numCPU * mhz_per_core *
int(cpu_reservation)) / 100)
resource_spec.cpuAllocation = Vim.ResourceAllocationInfo()
resource_spec.cpuAllocation.reservation = cpu_reservation
if memory_reservation is not None:
memory_reservation = int(
(vm.config.hardware.memoryMB * int(memory_reservation)) / 100)
resource_spec.memoryAllocation = Vim.ResourceAllocationInfo()
resource_spec.memoryAllocation.reservation = memory_reservation
if ((cpu_reservation is not None or memory_reservation is not None)):
vc_vm_pool = vm.resourcePool
try:
vc_vm_pool.UpdateChildResourceConfiguration([resource_spec])
except Exception:
log.exception(
"Failed to update cpu/memory resources for vm %r" %
vm_name)
raise
new_cpu_res = vm.resourceConfig.cpuAllocation.reservation
new_memory_res = vm.resourceConfig.memoryAllocation.reservation
log.info("Updated %r with reservations: cpu=%sMHz, memory=%sMB" %
(vm_name, new_cpu_res, new_memory_res))
else:
raise ValueError("Failed to find vm %r for resources allocation" %
vm_name)
def createResourceConfigSpec(self):
spec = Vim.ResourceConfigSpec()
spec.cpuAllocation = Vim.ResourceAllocationInfo()
spec.cpuAllocation.shares = Vim.SharesInfo()
spec.cpuAllocation.shares.level = Vim.SharesInfo.Level.normal
spec.cpuAllocation.shares.shares = 4000
spec.cpuAllocation.reservation = long(0)
spec.cpuAllocation.limit = long(-1)
spec.cpuAllocation.expandableReservation = True
spec.memoryAllocation = Vim.ResourceAllocationInfo()
spec.memoryAllocation.shares = Vim.SharesInfo()
spec.memoryAllocation.shares.level = Vim.SharesInfo.Level.normal
spec.memoryAllocation.shares.shares = 4000
spec.memoryAllocation.reservation = long(0)
spec.memoryAllocation.limit = long(-1)
spec.memoryAllocation.expandableReservation = True
return spec