Python DeviceModel.lookup方法代碼示例

# 需要導入模塊: from wok.plugins.kimchi.model.host import DeviceModel [as 別名]
# 或者: from wok.plugins.kimchi.model.host.DeviceModel import lookup [as 別名]
    def delete(self, vmid, dev_name):
        dom = VMModel.get_vm(vmid, self.conn)
        xmlstr = dom.XMLDesc(0)
        root = objectify.fromstring(xmlstr)

        try:
            hostdev = root.devices.hostdev
        except AttributeError:
            raise NotFoundError('KCHVMHDEV0001E',
                                {'vmid': vmid, 'dev_name': dev_name})

        pci_devs = [(DeviceModel.deduce_dev_name(e, self.conn), e)
                    for e in hostdev if e.attrib['type'] == 'pci']

        dev_model = DeviceModel(conn=self.conn)
        dev_info = dev_model.lookup(dev_name)
        is_3D_device = dev_model.is_device_3D_controller(dev_info)
        if is_3D_device and DOM_STATE_MAP[dom.info()[0]] != "shutoff":
            raise InvalidOperation('KCHVMHDEV0006E',
                                   {'name': dev_info['name']})

        for e in hostdev:
            if DeviceModel.deduce_dev_name(e, self.conn) == dev_name:
                xmlstr = etree.tostring(e)
                dom.detachDeviceFlags(
                    xmlstr, get_vm_config_flag(dom, mode='all'))
                if e.attrib['type'] == 'pci':
                    self._delete_affected_pci_devices(dom, dev_name, pci_devs)
                if is_3D_device:
                    devsmodel = VMHostDevsModel(conn=self.conn)
                    devsmodel.update_mmio_guest(vmid, False)
                break
        else:
            raise NotFoundError('KCHVMHDEV0001E',
                                {'vmid': vmid, 'dev_name': dev_name})

# 需要導入模塊: from wok.plugins.kimchi.model.host import DeviceModel [as 別名]
# 或者: from wok.plugins.kimchi.model.host.DeviceModel import lookup [as 別名]
    def _delete_affected_pci_devices(self, dom, dev_name, pci_devs):
        dev_model = DeviceModel(conn=self.conn)
        try:
            dev_model.lookup(dev_name)
        except NotFoundError:
            return

        affected_names = set(
            DevicesModel(
                conn=self.conn).get_list(_passthrough_affected_by=dev_name))

        for pci_name, e in pci_devs:
            if pci_name in affected_names:
                xmlstr = etree.tostring(e)
                dom.detachDeviceFlags(
                    xmlstr, get_vm_config_flag(dom, mode='all'))

# 需要導入模塊: from wok.plugins.kimchi.model.host import DeviceModel [as 別名]
# 或者: from wok.plugins.kimchi.model.host.DeviceModel import lookup [as 別名]
    def _detach_device(self, cb, params):
        cb('Detaching device.')
        vmid = params['vmid']
        dev_name = params['dev_name']
        dom = params['dom']
        hostdev = params['hostdev']

        pci_devs = [(DeviceModel.deduce_dev_name(e, self.conn), e)
                    for e in hostdev if e.attrib['type'] == 'pci']

        dev_model = DeviceModel(conn=self.conn)
        dev_info = dev_model.lookup(dev_name)
        is_3D_device = dev_model.is_device_3D_controller(dev_info)
        if is_3D_device and DOM_STATE_MAP[dom.info()[0]] != "shutoff":
            raise InvalidOperation('KCHVMHDEV0006E',
                                   {'name': dev_info['name']})

        if self._hotunplug_multifunction_pci(dom, hostdev, dev_name):
            if is_3D_device:
                cb('Updating MMIO from VM...')
                devsmodel = VMHostDevsModel(conn=self.conn)
                devsmodel.update_mmio_guest(vmid, False)
            cb('OK', True)
            return

        for e in hostdev:
            if DeviceModel.deduce_dev_name(e, self.conn) == dev_name:
                xmlstr = etree.tostring(e)
                cb('Detaching device from VM...')
                dom.detachDeviceFlags(
                    xmlstr, get_vm_config_flag(dom, mode='all'))
                if e.attrib['type'] == 'pci':
                    cb('Deleting affected PCI devices...')
                    self._delete_affected_pci_devices(dom, dev_name, pci_devs)
                if is_3D_device:
                    cb('Updating MMIO from VM...')
                    devsmodel = VMHostDevsModel(conn=self.conn)
                    devsmodel.update_mmio_guest(vmid, False)
                break
        else:
            raise NotFoundError('KCHVMHDEV0001E',
                                {'vmid': vmid, 'dev_name': dev_name})

        cb('OK', True)

# 需要導入模塊: from wok.plugins.kimchi.model.host import DeviceModel [as 別名]
# 或者: from wok.plugins.kimchi.model.host.DeviceModel import lookup [as 別名]
    def lookup(self, vmid, dev_name):
        dom = VMModel.get_vm(vmid, self.conn)
        xmlstr = dom.XMLDesc(0)
        root = objectify.fromstring(xmlstr)
        try:
            hostdev = root.devices.hostdev
        except AttributeError:
            raise NotFoundError('KCHVMHDEV0001E',
                                {'vmid': vmid, 'dev_name': dev_name})

        dev_model = DeviceModel(conn=self.conn)
        for e in hostdev:
            deduced_name = DeviceModel.deduce_dev_name(e, self.conn)
            if deduced_name == dev_name:
                dev_info = dev_model.lookup(dev_name)
                return {'name': dev_name,
                        'type': e.attrib['type'],
                        'product': dev_info.get('product', None),
                        'vendor': dev_info.get('vendor', None)}

        raise NotFoundError('KCHVMHDEV0001E',
                            {'vmid': vmid, 'dev_name': dev_name})

# 需要導入模塊: from wok.plugins.kimchi.model.host import DeviceModel [as 別名]
# 或者: from wok.plugins.kimchi.model.host.DeviceModel import lookup [as 別名]
    def _attach_pci_device(self, vmid, dev_info):
        self._validate_pci_passthrough_env()

        dom = VMModel.get_vm(vmid, self.conn)
        # Due to libvirt limitation, we don't support live assigne device to
        # vfio driver.
        driver = ('vfio' if DOM_STATE_MAP[dom.info()[0]] == "shutoff" and
                  self.caps.kernel_vfio else 'kvm')

        # on powerkvm systems it must be vfio driver.
        distro, _, _ = platform.linux_distribution()
        if distro == 'IBM_PowerKVM':
            driver = 'vfio'

        # Attach all PCI devices in the same IOMMU group
        dev_model = DeviceModel(conn=self.conn)
        devs_model = DevicesModel(conn=self.conn)
        affected_names = devs_model.get_list(
            _passthrough_affected_by=dev_info['name'])
        passthrough_names = devs_model.get_list(
            _cap='pci', _passthrough='true')
        group_names = list(set(affected_names) & set(passthrough_names))
        pci_infos = [dev_model.lookup(dev_name) for dev_name in group_names]
        pci_infos.append(dev_info)

        is_multifunction = len(pci_infos) > 1 and \
            DOM_STATE_MAP[dom.info()[0]] == "shutoff"
        pci_infos = sorted(pci_infos, key=itemgetter('name'))

        # all devices in the group that is going to be attached to the vm
        # must be detached from the host first
        with RollbackContext() as rollback:
            for pci_info in pci_infos:
                try:
                    dev = self.conn.get().nodeDeviceLookupByName(
                        pci_info['name'])
                    dev.dettach()
                except Exception:
                    raise OperationFailed('KCHVMHDEV0005E',
                                          {'name': pci_info['name']})
                else:
                    rollback.prependDefer(dev.reAttach)

            rollback.commitAll()

        device_flags = get_vm_config_flag(dom, mode='all')

        slot = 0
        if is_multifunction:
            slot = self._available_slot(dom)
        with RollbackContext() as rollback:
            for pci_info in pci_infos:
                pci_info['detach_driver'] = driver
                xmlstr = self._get_pci_device_xml(pci_info,
                                                  slot,
                                                  is_multifunction)
                try:
                    dom.attachDeviceFlags(xmlstr, device_flags)
                except libvirt.libvirtError:
                    wok_log.error(
                        'Failed to attach host device %s to VM %s: \n%s',
                        pci_info['name'], vmid, xmlstr)
                    raise
                rollback.prependDefer(dom.detachDeviceFlags,
                                      xmlstr, device_flags)
            rollback.commitAll()

        return dev_info['name']

# 需要導入模塊: from wok.plugins.kimchi.model.host import DeviceModel [as 別名]
# 或者: from wok.plugins.kimchi.model.host.DeviceModel import lookup [as 別名]
class VMHostDevModel(object):
    def __init__(self, **kargs):
        self.conn = kargs['conn']
        self.objstore = kargs['objstore']
        self.events = kargs['eventsloop']
        self.task = TaskModel(**kargs)
        self.devs_model = DevicesModel(**kargs)
        self.dev_model = DeviceModel(**kargs)
        self._cb = None
        self.events.registerDetachDevicesEvent(
            self.conn,
            self._event_devices,
            self)

    def lookup(self, vmid, dev_name):
        dom = VMModel.get_vm(vmid, self.conn)
        xmlstr = dom.XMLDesc(0)
        root = objectify.fromstring(xmlstr)
        try:
            hostdev = root.devices.hostdev
        except AttributeError:
            raise NotFoundError('KCHVMHDEV0001E',
                                {'vmid': vmid, 'dev_name': dev_name})

        for e in hostdev:
            deduced_name = DeviceModel.deduce_dev_name(e, self.conn)
            if deduced_name == dev_name:
                dev_info = self.dev_model.lookup(dev_name)
                return {'name': dev_name,
                        'type': e.attrib['type'],
                        'product': dev_info.get('product', None),
                        'vendor': dev_info.get('vendor', None),
                        'multifunction': dev_info.get('multifunction', None),
                        'vga3d': dev_info.get('vga3d', None)}

        raise NotFoundError('KCHVMHDEV0001E',
                            {'vmid': vmid, 'dev_name': dev_name})

    def delete(self, vmid, dev_name):
        dom = VMModel.get_vm(vmid, self.conn)
        xmlstr = dom.XMLDesc(0)
        root = objectify.fromstring(xmlstr)

        try:
            hostdev = root.devices.hostdev

        except AttributeError:
            raise NotFoundError('KCHVMHDEV0001E',
                                {'vmid': vmid, 'dev_name': dev_name})

        task_params = {'vmid': vmid,
                       'dev_name': dev_name,
                       'dom': dom,
                       'hostdev': hostdev,
                       'lock': threading.RLock()}
        task_uri = u'/plugins/kimchi/vms/%s/hostdevs/%s' % \
            (VMModel.get_vm(vmid, self.conn).name(), dev_name)
        taskid = AsyncTask(task_uri, self._detach_device, task_params).id
        return self.task.lookup(taskid)

    def _event_devices(self, conn, dom, alias, opaque):
        """
        Callback to handle add/remove devices event
        """
        if opaque._cb is None:
            wok_log.error('opaque must be valid')
            return

        wok_log.info("Device %s removed successfully" % alias)

        # Re-attach device to host if it's not managed mode
        if not opaque._managed:
            try:
                dev = conn.get().nodeDeviceLookupByName(alias)
                dev.reAttach()
            except libvirt.libvirtError, e:
                wok_log.error(
                    "Unable to attach device %s back to host. Error: %s",
                    alias, e.message
                )
        else:

# 需要導入模塊: from wok.plugins.kimchi.model.host import DeviceModel [as 別名]
# 或者: from wok.plugins.kimchi.model.host.DeviceModel import lookup [as 別名]
class VMHostDevsModel(object):
    def __init__(self, **kargs):
        self.conn = kargs['conn']
        self.objstore = kargs['objstore']
        self.events = kargs['eventsloop']
        self.caps = CapabilitiesModel(**kargs)
        self.devs_model = DevicesModel(**kargs)
        self.dev_model = DeviceModel(**kargs)
        self.task = TaskModel(**kargs)
        self._cb = None
        self.events.registerAttachDevicesEvent(
            self.conn,
            self._event_devices,
            self)

    def get_list(self, vmid):
        dom = VMModel.get_vm(vmid, self.conn)
        xmlstr = dom.XMLDesc(0)
        root = objectify.fromstring(xmlstr)
        try:
            hostdev = root.devices.hostdev
        except AttributeError:
            return []

        return [DeviceModel.deduce_dev_name(e, self.conn) for e in hostdev]

    def _passthrough_device_validate(self, dev_name):
        eligible_dev_names = self.devs_model.get_list(_passthrough='true')
        if dev_name not in eligible_dev_names:
            raise InvalidParameter('KCHVMHDEV0002E', {'dev_name': dev_name})

    def _event_devices(self, conn, dom, alias, opaque):
        """
        Callback to handle add/remove devices event
        """
        if opaque._cb is None:
            wok_log.error('opaque must be valid')
            return

        wok_log.info("Device %s added successfuly" % alias)
        opaque._cb('OK', True)

    def create(self, vmid, params):
        dev_name = params['name']
        dev_info = self.dev_model.lookup(dev_name)

        if dev_info['device_type'] == 'pci':
            taskid = AsyncTask(u'/plugins/kimchi/vms/%s/hostdevs/' %
                               VMModel.get_vm(vmid, self.conn).name(),
                               self._attach_pci_device,
                               {'vmid': vmid, 'dev_info': dev_info,
                                'lock': threading.RLock()}).id
            return self.task.lookup(taskid)

        with RollbackContext() as rollback:
            try:
                dev = self.conn.get().nodeDeviceLookupByName(dev_name)
                dev.dettach()
            except Exception:
                raise OperationFailed('KCHVMHDEV0005E', {'name': dev_name})
            else:
                rollback.prependDefer(dev.reAttach)

            rollback.commitAll()

        taskid = AsyncTask(u'/plugins/kimchi/vms/%s/hostdevs/' %
                           VMModel.get_vm(vmid, self.conn).name(),
                           '_attach_%s_device' % dev_info['device_type'],
                           {'vmid': vmid, 'dev_info': dev_info,
                            'lock': threading.RLock()}).id

        return self.task.lookup(taskid)

    def _get_pci_devices_xml(self, pci_infos, slot, driver):
        hostdevs = ''
        # all devices included in the xml will be sorted in reverse (the
        # function 0 will be the last one) and will include the guest
        # address details
        for dev_info in sorted(pci_infos,
                               key=itemgetter('function'),
                               reverse=True):

            dev_info['detach_driver'] = driver
            hostdevs += self._get_pci_device_xml(dev_info,
                                                 slot,
                                                 True)

        return '<devices>%s</devices>' % hostdevs

    def have_usb_controller(self, vmid):
        dom = VMModel.get_vm(vmid, self.conn)

        root = objectify.fromstring(dom.XMLDesc(0))

        try:
            controllers = root.devices.controller

        except AttributeError:
            return False

#.........這裏部分代碼省略.........

# 需要導入模塊: from wok.plugins.kimchi.model.host import DeviceModel [as 別名]
# 或者: from wok.plugins.kimchi.model.host.DeviceModel import lookup [as 別名]
    def _attach_pci_device(self, cb, params):
        cb('Attaching PCI device')
        vmid = params['vmid']
        dev_info = params['dev_info']
        self._validate_pci_passthrough_env()

        dom = VMModel.get_vm(vmid, self.conn)
        # Due to libvirt limitation, we don't support live assigne device to
        # vfio driver.
        driver = ('vfio' if DOM_STATE_MAP[dom.info()[0]] == "shutoff" and
                  self.caps.kernel_vfio else 'kvm')

        # on powerkvm systems it must be vfio driver.
        distro, _, _ = platform.linux_distribution()
        if distro == 'IBM_PowerKVM':
            driver = 'vfio'

        # Attach all PCI devices in the same IOMMU group
        dev_model = DeviceModel(conn=self.conn)
        devs_model = DevicesModel(conn=self.conn)
        affected_names = devs_model.get_list(
            _passthrough_affected_by=dev_info['name'])
        passthrough_names = devs_model.get_list(
            _cap='pci', _passthrough='true')
        group_names = list(set(affected_names) & set(passthrough_names))
        pci_infos = [dev_model.lookup(dev_name) for dev_name in group_names]
        pci_infos.append(dev_info)

        is_multifunction = len(pci_infos) > 1
        pci_infos = sorted(pci_infos, key=itemgetter('name'))

        # does not allow hot-plug of 3D graphic cards
        is_3D_device = dev_model.is_device_3D_controller(dev_info)
        if is_3D_device and DOM_STATE_MAP[dom.info()[0]] != "shutoff":
            raise InvalidOperation('KCHVMHDEV0006E',
                                   {'name': dev_info['name']})

        # all devices in the group that is going to be attached to the vm
        # must be detached from the host first
        with RollbackContext() as rollback:
            for pci_info in pci_infos:
                try:
                    dev = self.conn.get().nodeDeviceLookupByName(
                        pci_info['name'])
                    dev.dettach()
                except Exception:
                    raise OperationFailed('KCHVMHDEV0005E',
                                          {'name': pci_info['name']})
                else:
                    rollback.prependDefer(dev.reAttach)

            rollback.commitAll()

        device_flags = get_vm_config_flag(dom, mode='all')

        # when attaching a 3D graphic device it might be necessary to increase
        # the window size memory in order to be able to attach more than one
        # device to the same guest
        if is_3D_device:
            self.update_mmio_guest(vmid, True)

        slot = 0
        if is_multifunction:
            # search for the first available slot in guest xml
            slot = self._available_slot(dom)

        with RollbackContext() as rollback:
            # multifunction hotplug is a special case where all functions
            # must be attached together within one xml file, the same does
            # not happen to multifunction coldplug - where each function is
            # attached individually
            if DOM_STATE_MAP[dom.info()[0]] != 'shutoff' and is_multifunction:
                xmlstr = self._get_pci_devices_xml(pci_infos, slot, driver)

                try:
                    dom.attachDeviceFlags(xmlstr, device_flags)

                except libvirt.libvirtError:
                    wok_log.error(
                        'Failed to attach mutifunction device VM %s: \n%s',
                        vmid, xmlstr)
                    raise

                rollback.prependDefer(dom.detachDeviceFlags, xmlstr,
                                      device_flags)
                rollback.commitAll()
                cb('OK', True)
                return

            for pci_info in pci_infos:
                pci_info['detach_driver'] = driver
                cb('Reading source device XML')
                xmlstr = self._get_pci_device_xml(pci_info,
                                                  slot,
                                                  is_multifunction)
                try:
                    cb('Attaching device to VM')
                    dom.attachDeviceFlags(xmlstr, device_flags)
                except libvirt.libvirtError:
                    wok_log.error(
#.........這裏部分代碼省略.........

# 需要導入模塊: from wok.plugins.kimchi.model.host import DeviceModel [as 別名]
# 或者: from wok.plugins.kimchi.model.host.DeviceModel import lookup [as 別名]
class VMHostDevModel(object):
    def __init__(self, **kargs):
        self.conn = kargs['conn']
        self.objstore = kargs['objstore']
        self.events = kargs['eventsloop']
        self.task = TaskModel(**kargs)
        self.devs_model = DevicesModel(**kargs)
        self.dev_model = DeviceModel(**kargs)
        self._cb = None
        self.events.registerDetachDevicesEvent(
            self.conn,
            self._event_devices,
            self)

    def lookup(self, vmid, dev_name):
        dom = VMModel.get_vm(vmid, self.conn)
        xmlstr = dom.XMLDesc(0)
        root = objectify.fromstring(xmlstr)
        try:
            hostdev = root.devices.hostdev
        except AttributeError:
            raise NotFoundError('KCHVMHDEV0001E',
                                {'vmid': vmid, 'dev_name': dev_name})

        for e in hostdev:
            deduced_name = DeviceModel.deduce_dev_name(e, self.conn)
            if deduced_name == dev_name:
                dev_info = self.dev_model.lookup(dev_name)
                return {'name': dev_name,
                        'type': e.attrib['type'],
                        'product': dev_info.get('product', None),
                        'vendor': dev_info.get('vendor', None),
                        'multifunction': dev_info.get('multifunction', None),
                        'vga3d': dev_info.get('vga3d', None)}

        raise NotFoundError('KCHVMHDEV0001E',
                            {'vmid': vmid, 'dev_name': dev_name})

    def delete(self, vmid, dev_name):
        dom = VMModel.get_vm(vmid, self.conn)
        xmlstr = dom.XMLDesc(0)
        root = objectify.fromstring(xmlstr)

        try:
            hostdev = root.devices.hostdev

        except AttributeError:
            raise NotFoundError('KCHVMHDEV0001E',
                                {'vmid': vmid, 'dev_name': dev_name})

        task_params = {'vmid': vmid,
                       'dev_name': dev_name,
                       'dom': dom,
                       'hostdev': hostdev,
                       'lock': threading.RLock()}
        task_uri = u'/plugins/kimchi/vms/%s/hostdevs/%s' % \
            (VMModel.get_vm(vmid, self.conn).name(), dev_name)
        taskid = add_task(task_uri, self._detach_device, self.objstore,
                          task_params)
        return self.task.lookup(taskid)

    def _event_devices(self, conn, dom, alias, opaque):
        """
        Callback to handle add/remove devices event
        """
        if opaque._cb is None:
            wok_log.error('opaque must be valid')
            return

        wok_log.info("Device %s removed successfuly" % alias)
        opaque._cb('OK', True)

    def _detach_device(self, cb, params):
        cb('Detaching device')
        self._cb = cb
        vmid = params['vmid']
        dev_name = params['dev_name']
        dom = params['dom']
        hostdev = params['hostdev']
        lock = params['lock']

        with lock:
            pci_devs = [(DeviceModel.deduce_dev_name(e, self.conn), e)
                        for e in hostdev if e.attrib['type'] == 'pci']

            dev_info = self.dev_model.lookup(dev_name)
            is_3D_device = self.dev_model.is_device_3D_controller(dev_info)
            if is_3D_device and DOM_STATE_MAP[dom.info()[0]] != "shutoff":
                raise InvalidOperation('KCHVMHDEV0006E',
                                       {'name': dev_info['name']})

            if self._hotunplug_multifunction_pci(dom, hostdev, dev_name):
                if is_3D_device:
                    devsmodel = VMHostDevsModel(conn=self.conn)
                    devsmodel.update_mmio_guest(vmid, False)

                if DOM_STATE_MAP[dom.info()[0]] == "shutoff":
                    cb('OK', True)
                return

#.........這裏部分代碼省略.........

# 需要導入模塊: from wok.plugins.kimchi.model.host import DeviceModel [as 別名]
# 或者: from wok.plugins.kimchi.model.host.DeviceModel import lookup [as 別名]
class VMHostDevModel(object):
    def __init__(self, **kargs):
        self.conn = kargs['conn']
        self.objstore = kargs['objstore']
        self.events = kargs['eventsloop']
        self.task = TaskModel(**kargs)
        self.devs_model = DevicesModel(**kargs)
        self.dev_model = DeviceModel(**kargs)
        self._cb = None
        self.events.registerDetachDevicesEvent(
            self.conn, self._event_devices, self)

    def lookup(self, vmid, dev_name):
        dom = VMModel.get_vm(vmid, self.conn)
        xmlstr = dom.XMLDesc(0)
        root = objectify.fromstring(xmlstr)
        try:
            hostdev = root.devices.hostdev
        except AttributeError:
            raise NotFoundError('KCHVMHDEV0001E', {
                                'vmid': vmid, 'dev_name': dev_name})

        for e in hostdev:
            deduced_name = DeviceModel.deduce_dev_name(e, self.conn)
            if deduced_name == dev_name:
                dev_info = self.dev_model.lookup(dev_name)
                return {
                    'name': dev_name,
                    'type': e.attrib['type'],
                    'product': dev_info.get('product', None),
                    'vendor': dev_info.get('vendor', None),
                    'multifunction': dev_info.get('multifunction', None),
                    'vga3d': dev_info.get('vga3d', None),
                }

        raise NotFoundError('KCHVMHDEV0001E', {
                            'vmid': vmid, 'dev_name': dev_name})

    def delete(self, vmid, dev_name):
        dom = VMModel.get_vm(vmid, self.conn)
        xmlstr = dom.XMLDesc(0)
        root = objectify.fromstring(xmlstr)

        try:
            hostdev = root.devices.hostdev

        except AttributeError:
            raise NotFoundError('KCHVMHDEV0001E', {
                                'vmid': vmid, 'dev_name': dev_name})

        task_params = {
            'vmid': vmid,
            'dev_name': dev_name,
            'dom': dom,
            'hostdev': hostdev,
            'lock': threading.RLock(),
        }
        task_uri = u'/plugins/kimchi/vms/%s/hostdevs/%s' % (
            VMModel.get_vm(vmid, self.conn).name(),
            dev_name,
        )
        taskid = AsyncTask(task_uri, self._detach_device, task_params).id
        return self.task.lookup(taskid)

    def _event_devices(self, conn, dom, alias, opaque):
        """
        Callback to handle add/remove devices event
        """
        if opaque._cb is None:
            wok_log.error('opaque must be valid')
            return

        wok_log.info('Device %s removed successfully' % alias)

        # Re-attach device to host if it's not managed mode
        if not opaque._managed:
            try:
                dev = conn.get().nodeDeviceLookupByName(alias)
                dev.reAttach()
            except libvirt.libvirtError as e:
                wok_log.error(
                    'Unable to attach device %s back to host. Error: %s', alias, str(
                        e)
                )
        else:
            wok_log.info(
                "Device %s was attached in 'managed' mode. "
                'Skipping re-attach().' % alias
            )

        opaque._cb('OK', True)

    def _detach_device(self, cb, params):
        cb('Detaching device')
        self._cb = cb
        vmid = params['vmid']
        dev_name = params['dev_name']
        dom = params['dom']
        hostdev = params['hostdev']
        lock = params['lock']
#.........這裏部分代碼省略.........

# 需要導入模塊: from wok.plugins.kimchi.model.host import DeviceModel [as 別名]
# 或者: from wok.plugins.kimchi.model.host.DeviceModel import lookup [as 別名]

#.........這裏部分代碼省略.........
        # 1  error reading VGDA
        # 2  volume group doesn't exist
        # 3  not all physical volumes of volume group online
        # 4  volume group not found
        # 5  no volume groups found at all
        # 6  error reading VGDA from lvmtab
        if from_vg and returncode in [2, 4, 5]:
            raise InvalidOperation('KCHPOOL0038E', {'name': name})

        if not from_vg and returncode not in [2, 4, 5]:
            raise InvalidOperation('KCHPOOL0036E', {'name': name})

    def create(self, params):
        task_id = None
        conn = self.conn.get()
        from_vg = params.get('source', {}).get('from_vg', False)

        try:
            name = params['name']
            if name == ISO_POOL_NAME:
                raise InvalidOperation('KCHPOOL0031E')

            # The user may want to create a logical pool with the same name
            # used before but a volume group will already exist with this name
            # So check the volume group does not exist to create the pool
            if params['type'] == 'logical':
                self._check_lvm(name, from_vg)

            if params['type'] == 'kimchi-iso':
                task_id = self._do_deep_scan(params)

            if params['type'] == 'scsi':
                adapter_name = params['source']['adapter_name']
                extra_params = self.device.lookup(adapter_name)
                # Adds name, adapter_type, wwpn and wwnn to source information
                params['source'].update(extra_params)
                params['fc_host_support'] = self.caps.fc_host_support

            poolDef = StoragePoolDef.create(params)
            poolDef.prepare(conn)
            xml = poolDef.xml
        except KeyError as item:
            raise MissingParameter(
                'KCHPOOL0004E', {'item': str(item), 'name': name})

        if name in self.get_list():
            raise InvalidOperation('KCHPOOL0001E', {'name': name})

        try:
            if task_id:
                # Create transient pool for deep scan
                conn.storagePoolCreateXML(xml, 0)
                return name

            pool = conn.storagePoolDefineXML(xml, 0)
        except libvirt.libvirtError as e:
            wok_log.error(f'Problem creating Storage Pool: {str(e)}')
            raise OperationFailed(
                'KCHPOOL0007E', {'name': name, 'err': e.get_error_message()}
            )

        # Build and set autostart value to pool
        # Ignore error as the pool was already successfully created
        # The build process fails when the pool directory already exists
        try:
            if params['type'] in ['logical', 'dir', 'netfs', 'scsi']: