Python VMachine.copy方法代码示例

# 需要导入模块: from ovs.dal.hybrids.vmachine import VMachine [as 别名]
# 或者: from ovs.dal.hybrids.vmachine.VMachine import copy [as 别名]
    def clone(machineguid, timestamp, name):
        """
        Clone a vmachine using the disk snapshot based on a snapshot timestamp

        @param machineguid: guid of the machine to clone
        @param timestamp: timestamp of the disk snapshots to use for the clone
        @param name: name for the new machine
        """
        machine = VMachine(machineguid)

        disks = {}
        for snapshot in machine.snapshots:
            if snapshot['timestamp'] == timestamp:
                for diskguid, snapshotguid in snapshot['snapshots'].iteritems():
                    disks[diskguid] = snapshotguid

        new_machine = VMachine()
        new_machine.copy(machine)
        new_machine.name = name
        new_machine.pmachine = machine.pmachine
        new_machine.save()

        new_disk_guids = []
        disks_by_order = sorted(machine.vdisks, key=lambda x: x.order)
        for currentDisk in disks_by_order:
            if machine.is_vtemplate and currentDisk.templatesnapshot:
                snapshotid = currentDisk.templatesnapshot
            else:
                snapshotid = disks[currentDisk.guid]
            prefix = '%s-clone' % currentDisk.name

            result = VDiskController.clone(diskguid=currentDisk.guid,
                                           snapshotid=snapshotid,
                                           devicename=prefix,
                                           pmachineguid=new_machine.pmachine_guid,
                                           machinename=new_machine.name,
                                           machineguid=new_machine.guid)
            new_disk_guids.append(result['diskguid'])

        hv = Factory.get(machine.pmachine)
        try:
            result = hv.clone_vm(machine.hypervisor_id, name, disks, None, True)
        except:
            VMachineController.delete(machineguid=new_machine.guid)
            raise

        new_machine.hypervisor_id = result
        new_machine.save()
        return new_machine.guid

# 需要导入模块: from ovs.dal.hybrids.vmachine import VMachine [as 别名]
# 或者: from ovs.dal.hybrids.vmachine.VMachine import copy [as 别名]
    def create_from_template(name, machineguid, pmachineguid, description=None):
        """
        Create a new vmachine using an existing vmachine template

        :param machineguid: guid of the template vmachine
        :param name: name of new vmachine
        :param pmachineguid: guid of hypervisor to create new vmachine on
        :param description: Description for the machine
        :return: guid of the newly created vmachine | False on any failure
        """

        template_vm = VMachine(machineguid)
        if not template_vm.is_vtemplate:
            return False

        target_pm = PMachine(pmachineguid)
        target_hypervisor = Factory.get(target_pm)

        storagerouters = [sr for sr in StorageRouterList.get_storagerouters() if sr.pmachine_guid == target_pm.guid]
        if len(storagerouters) == 1:
            target_storagerouter = storagerouters[0]
        else:
            raise ValueError('Pmachine {0} has no StorageRouter assigned to it'.format(pmachineguid))
        routing_key = "sr.{0}".format(target_storagerouter.machine_id)

        vpool = None
        vpool_guids = set()
        if template_vm.vpool is not None:
            vpool = template_vm.vpool
            vpool_guids.add(vpool.guid)
        for disk in template_vm.vdisks:
            vpool = disk.vpool
            vpool_guids.add(vpool.guid)
        if len(vpool_guids) != 1:
            raise RuntimeError('Only 1 vpool supported on template disk(s) - {0} found!'.format(len(vpool_guids)))

        if not template_vm.pmachine.hvtype == target_pm.hvtype:
            raise RuntimeError('Source and target hypervisor not identical')

        # Currently, only one vPool is supported, so we can just use whatever the `vpool` variable above
        # was set to as 'the' vPool for the code below. This obviously will have to change once vPool mixes
        # are supported.

        target_storagedriver = None
        source_storagedriver = None
        for vpool_storagedriver in vpool.storagedrivers:
            if vpool_storagedriver.storagerouter.pmachine_guid == target_pm.guid:
                target_storagedriver = vpool_storagedriver
            if vpool_storagedriver.storagerouter.pmachine_guid == template_vm.pmachine_guid:
                source_storagedriver = vpool_storagedriver
        if target_storagedriver is None:
            raise RuntimeError('Volume not served on target hypervisor')

        source_hv = Factory.get(template_vm.pmachine)
        target_hv = Factory.get(target_pm)
        if not source_hv.is_datastore_available(source_storagedriver.storage_ip, source_storagedriver.mountpoint):
            raise RuntimeError('Datastore unavailable on source hypervisor')
        if not target_hv.is_datastore_available(target_storagedriver.storage_ip, target_storagedriver.mountpoint):
            raise RuntimeError('Datastore unavailable on target hypervisor')

        source_vm = source_hv.get_vm_object(template_vm.hypervisor_id)
        if not source_vm:
            raise RuntimeError('VM with key reference {0} not found'.format(template_vm.hypervisor_id))

        name_duplicates = VMachineList.get_vmachine_by_name(name)
        if name_duplicates is not None and len(name_duplicates) > 0:
            raise RuntimeError('A vMachine with name {0} already exists'.format(name))

        vm_path = target_hypervisor.get_vmachine_path(name, target_storagedriver.storagerouter.machine_id)

        new_vm = VMachine()
        new_vm.copy(template_vm)
        new_vm.hypervisor_id = ''
        new_vm.vpool = template_vm.vpool
        new_vm.pmachine = target_pm
        new_vm.name = name
        new_vm.description = description
        new_vm.is_vtemplate = False
        new_vm.devicename = target_hypervisor.clean_vmachine_filename(vm_path)
        new_vm.status = 'CREATED'
        new_vm.save()

        storagedrivers = [storagedriver for storagedriver in vpool.storagedrivers if storagedriver.storagerouter.pmachine_guid == new_vm.pmachine_guid]
        if len(storagedrivers) == 0:
            raise RuntimeError('Cannot find Storage Driver serving {0} on {1}'.format(vpool.name, new_vm.pmachine.name))

        disks = []
        disks_by_order = sorted(template_vm.vdisks, key=lambda x: x.order)
        for disk in disks_by_order:
            try:
                prefix = '{0}-clone'.format(disk.name)
                result = VDiskController.create_from_template(
                    diskguid=disk.guid,
                    devicename=prefix,
                    pmachineguid=target_pm.guid,
                    machinename=new_vm.name,
                    machineguid=new_vm.guid
                )
                disks.append(result)
                VMachineController._logger.debug('Disk appended: {0}'.format(result))
#.........这里部分代码省略.........

# 需要导入模块: from ovs.dal.hybrids.vmachine import VMachine [as 别名]
# 或者: from ovs.dal.hybrids.vmachine.VMachine import copy [as 别名]
    def clone(machineguid, timestamp, name):
        """
        Clone a vmachine using the disk snapshot based on a snapshot timestamp

        @param machineguid: guid of the machine to clone
        @param timestamp: timestamp of the disk snapshots to use for the clone
        @param name: name for the new machine
        """
        machine = VMachine(machineguid)
        timestamp = str(timestamp)
        if timestamp not in (snap['timestamp'] for snap in machine.snapshots):
            raise RuntimeError('Invalid timestamp provided, not a valid snapshot of this vmachine.')

        vpool = None
        storagerouter = None
        if machine.pmachine is not None and machine.pmachine.hvtype == 'VMWARE':
            for vdisk in machine.vdisks:
                if vdisk.vpool is not None:
                    vpool = vdisk.vpool
                    break
        for vdisk in machine.vdisks:
            if vdisk.storagerouter_guid:
                storagerouter = StorageRouter(vdisk.storagerouter_guid)
                break
        hv = Factory.get(machine.pmachine)
        vm_path = hv.get_vmachine_path(name, storagerouter.machine_id if storagerouter is not None else '')
        # mutex in sync_with_hypervisor uses "None" for KVM hvtype
        mutex = volatile_mutex('{0}_{1}'.format(hv.clean_vmachine_filename(vm_path), vpool.guid if vpool is not None else 'none'))

        disks = {}
        for snapshot in machine.snapshots:
            if snapshot['timestamp'] == timestamp:
                for diskguid, snapshotguid in snapshot['snapshots'].iteritems():
                    disks[diskguid] = snapshotguid

        try:
            mutex.acquire(wait=120)
            new_machine = VMachine()
            new_machine.copy(machine)
            new_machine.name = name
            new_machine.devicename = hv.clean_vmachine_filename(vm_path)
            new_machine.pmachine = machine.pmachine
            new_machine.save()
        finally:
            mutex.release()

        new_disk_guids = []
        vm_disks = []
        mountpoint = None
        disks_by_order = sorted(machine.vdisks, key=lambda x: x.order)
        try:
            for currentDisk in disks_by_order:
                if machine.is_vtemplate and currentDisk.templatesnapshot:
                    snapshotid = currentDisk.templatesnapshot
                else:
                    snapshotid = disks[currentDisk.guid]
                prefix = '%s-clone' % currentDisk.name

                result = VDiskController.clone(diskguid=currentDisk.guid,
                                               snapshotid=snapshotid,
                                               devicename=prefix,
                                               pmachineguid=new_machine.pmachine_guid,
                                               machinename=new_machine.name,
                                               machineguid=new_machine.guid)
                new_disk_guids.append(result['diskguid'])
                mountpoint = StorageDriverList.get_by_storagedriver_id(currentDisk.storagedriver_id).mountpoint
                vm_disks.append(result)
        except Exception as ex:
            VMachineController._logger.error('Failed to clone disks. {0}'.format(ex))
            VMachineController.delete(machineguid=new_machine.guid)
            raise

        try:
            result = hv.clone_vm(machine.hypervisor_id, name, vm_disks, mountpoint)
        except Exception as ex:
            VMachineController._logger.error('Failed to clone vm. {0}'.format(ex))
            VMachineController.delete(machineguid=new_machine.guid)
            raise

        try:
            mutex.acquire(wait=120)
            new_machine.hypervisor_id = result
            new_machine.save()
        finally:
            mutex.release()
        return new_machine.guid