本文整理汇总了Python中nova.virt.xenapi.vm_utils.VMHelper.lookup_image方法的典型用法代码示例。如果您正苦于以下问题：Python VMHelper.lookup_image方法的具体用法？Python VMHelper.lookup_image怎么用？Python VMHelper.lookup_image使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类nova.virt.xenapi.vm_utils.VMHelper的用法示例。
在下文中一共展示了VMHelper.lookup_image方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: spawn
# 需要导入模块: from nova.virt.xenapi.vm_utils import VMHelper [as 别名]
# 或者: from nova.virt.xenapi.vm_utils.VMHelper import lookup_image [as 别名]
def spawn(self, instance):
"""Create VM instance"""
vm = VMHelper.lookup(self._session, instance.name)
if vm is not None:
raise exception.Duplicate(_('Attempted to create'
' non-unique name %s') % instance.name)
#ensure enough free memory is available
if not VMHelper.ensure_free_mem(self._session, instance):
name = instance['name']
LOG.exception(_('instance %(name)s: not enough free memory')
% locals())
db.instance_set_state(context.get_admin_context(),
instance['id'],
power_state.SHUTDOWN)
return
user = AuthManager().get_user(instance.user_id)
project = AuthManager().get_project(instance.project_id)
#if kernel is not present we must download a raw disk
if instance.kernel_id:
disk_image_type = ImageType.DISK
else:
disk_image_type = ImageType.DISK_RAW
vdi_uuid = VMHelper.fetch_image(self._session, instance.id,
instance.image_id, user, project, disk_image_type)
vdi_ref = self._session.call_xenapi('VDI.get_by_uuid', vdi_uuid)
#Have a look at the VDI and see if it has a PV kernel
pv_kernel = False
if not instance.kernel_id:
pv_kernel = VMHelper.lookup_image(self._session, instance.id,
vdi_ref)
kernel = None
if instance.kernel_id:
kernel = VMHelper.fetch_image(self._session, instance.id,
instance.kernel_id, user, project, ImageType.KERNEL_RAMDISK)
ramdisk = None
if instance.ramdisk_id:
ramdisk = VMHelper.fetch_image(self._session, instance.id,
instance.ramdisk_id, user, project, ImageType.KERNEL_RAMDISK)
vm_ref = VMHelper.create_vm(self._session,
instance, kernel, ramdisk, pv_kernel)
VMHelper.create_vbd(self._session, vm_ref, vdi_ref, 0, True)
# write network info
admin_context = context.get_admin_context()
# TODO(tr3buchet) - remove comment in multi-nic
# I've decided to go ahead and consider multiple IPs and networks
# at this stage even though they aren't implemented because these will
# be needed for multi-nic and there was no sense writing it for single
# network/single IP and then having to turn around and re-write it
IPs = db.fixed_ip_get_all_by_instance(admin_context, instance['id'])
for network in db.network_get_all_by_instance(admin_context,
instance['id']):
network_IPs = [ip for ip in IPs if ip.network_id == network.id]
def ip_dict(ip):
return {'netmask': network['netmask'],
'enabled': '1',
'ip': ip.address}
mac_id = instance.mac_address.replace(':', '')
location = 'vm-data/networking/%s' % mac_id
mapping = {'label': network['label'],
'gateway': network['gateway'],
'mac': instance.mac_address,
'dns': [network['dns']],
'ips': [ip_dict(ip) for ip in network_IPs]}
self.write_to_param_xenstore(vm_ref, {location: mapping})
# TODO(tr3buchet) - remove comment in multi-nic
# this bit here about creating the vifs will be updated
# in multi-nic to handle multiple IPs on the same network
# and multiple networks
# for now it works as there is only one of each
bridge = network['bridge']
network_ref = \
NetworkHelper.find_network_with_bridge(self._session, bridge)
if network_ref:
VMHelper.create_vif(self._session, vm_ref,
network_ref, instance.mac_address)
LOG.debug(_('Starting VM %s...'), vm_ref)
self._session.call_xenapi('VM.start', vm_ref, False, False)
instance_name = instance.name
LOG.info(_('Spawning VM %(instance_name)s created %(vm_ref)s.')
% locals())
def _inject_onset_files():
onset_files = instance.onset_files
if onset_files:
# Check if this is a JSON-encoded string and convert if needed.
if isinstance(onset_files, basestring):
try:
onset_files = json.loads(onset_files)
except ValueError:
LOG.exception(_("Invalid value for onset_files: '%s'")
#.........这里部分代码省略.........
示例2: spawn
# 需要导入模块: from nova.virt.xenapi.vm_utils import VMHelper [as 别名]
# 或者: from nova.virt.xenapi.vm_utils.VMHelper import lookup_image [as 别名]
def spawn(self, instance, disk):
"""Create VM instance"""
instance_name = instance.name
vm = VMHelper.lookup(self._session, instance_name)
if vm is not None:
raise exception.Duplicate(_('Attempted to create'
' non-unique name %s') % instance_name)
#ensure enough free memory is available
if not VMHelper.ensure_free_mem(self._session, instance):
LOG.exception(_('instance %(instance_name)s: not enough free '
'memory') % locals())
db.instance_set_state(context.get_admin_context(),
instance['id'],
power_state.SHUTDOWN)
return
user = AuthManager().get_user(instance.user_id)
project = AuthManager().get_project(instance.project_id)
vdi_ref = kernel = ramdisk = pv_kernel = None
# Are we building from a pre-existing disk?
if not disk:
#if kernel is not present we must download a raw disk
disk_image_type = VMHelper.determine_disk_image_type(instance)
vdi_uuid = VMHelper.fetch_image(self._session, instance.id,
instance.image_id, user, project, disk_image_type)
vdi_ref = self._session.call_xenapi('VDI.get_by_uuid', vdi_uuid)
else:
vdi_ref = self._session.call_xenapi('VDI.get_by_uuid', disk)
if disk_image_type == ImageType.DISK_RAW:
# Have a look at the VDI and see if it has a PV kernel
pv_kernel = VMHelper.lookup_image(self._session, instance.id,
vdi_ref)
elif disk_image_type == ImageType.DISK_VHD:
# TODO(sirp): Assuming PV for now; this will need to be
# configurable as Windows will use HVM.
pv_kernel = True
if instance.kernel_id:
kernel = VMHelper.fetch_image(self._session, instance.id,
instance.kernel_id, user, project, ImageType.KERNEL_RAMDISK)
if instance.ramdisk_id:
ramdisk = VMHelper.fetch_image(self._session, instance.id,
instance.ramdisk_id, user, project, ImageType.KERNEL_RAMDISK)
vm_ref = VMHelper.create_vm(self._session,
instance, kernel, ramdisk, pv_kernel)
VMHelper.create_vbd(session=self._session, vm_ref=vm_ref,
vdi_ref=vdi_ref, userdevice=0, bootable=True)
# inject_network_info and create vifs
networks = self.inject_network_info(instance)
self.create_vifs(instance, networks)
LOG.debug(_('Starting VM %s...'), vm_ref)
self._start(instance, vm_ref)
LOG.info(_('Spawning VM %(instance_name)s created %(vm_ref)s.')
% locals())
def _inject_onset_files():
onset_files = instance.onset_files
if onset_files:
# Check if this is a JSON-encoded string and convert if needed.
if isinstance(onset_files, basestring):
try:
onset_files = json.loads(onset_files)
except ValueError:
LOG.exception(_("Invalid value for onset_files: '%s'")
% onset_files)
onset_files = []
# Inject any files, if specified
for path, contents in instance.onset_files:
LOG.debug(_("Injecting file path: '%s'") % path)
self.inject_file(instance, path, contents)
# NOTE(armando): Do we really need to do this in virt?
# NOTE(tr3buchet): not sure but wherever we do it, we need to call
# reset_network afterwards
timer = utils.LoopingCall(f=None)
def _wait_for_boot():
try:
state = self.get_info(instance_name)['state']
db.instance_set_state(context.get_admin_context(),
instance['id'], state)
if state == power_state.RUNNING:
LOG.debug(_('Instance %s: booted'), instance_name)
timer.stop()
_inject_onset_files()
return True
except Exception, exc:
LOG.warn(exc)
LOG.exception(_('instance %s: failed to boot'),
instance_name)
db.instance_set_state(context.get_admin_context(),
#.........这里部分代码省略.........