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']
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)
break
else:
raise NotFoundError('KCHVMHDEV0001E',
{'vmid': vmid, 'dev_name': dev_name})
def delete(self, vm_name, dev_name):
try:
bus_type = self.lookup(vm_name, dev_name)['bus']
dom = VMModel.get_vm(vm_name, self.conn)
except NotFoundError:
raise
if (bus_type not in HOTPLUG_TYPE and
DOM_STATE_MAP[dom.info()[0]] != 'shutoff'):
raise InvalidOperation('KCHVMSTOR0011E')
try:
disk = get_device_node(dom, dev_name)
path = get_vm_disk_info(dom, dev_name)['path']
if path is None or len(path) < 1:
path = self.lookup(vm_name, dev_name)['path']
# This has to be done before it's detached. If it wasn't
# in the obj store, its ref count would have been updated
# by get_disk_used_by()
if path is not None:
used_by = get_disk_used_by(self.objstore, self.conn, path)
else:
wok_log.error("Unable to decrement volume used_by on"
" delete because no path could be found.")
dom.detachDeviceFlags(etree.tostring(disk),
get_vm_config_flag(dom, 'all'))
except Exception as e:
raise OperationFailed("KCHVMSTOR0010E", {'error': e.message})
if used_by is not None and vm_name in used_by:
used_by.remove(vm_name)
set_disk_used_by(self.objstore, path, used_by)
else:
wok_log.error("Unable to update %s:%s used_by on delete."
% (vm_name, dev_name))
def delete(self, vm_name, dev_name):
try:
bus_type = self.lookup(vm_name, dev_name)['bus']
dom = VMModel.get_vm(vm_name, self.conn)
except NotFoundError:
raise
if (bus_type not in HOTPLUG_TYPE and
DOM_STATE_MAP[dom.info()[0]] != 'shutoff'):
raise InvalidOperation('KCHVMSTOR0011E')
try:
disk = get_device_node(dom, dev_name)
path = get_vm_disk_info(dom, dev_name)['path']
if path is None or len(path) < 1:
path = self.lookup(vm_name, dev_name)['path']
# This has to be done before it's detached. If it wasn't
# in the obj store, its ref count would have been updated
# by get_disk_used_by()
if path is not None:
used_by = get_disk_used_by(self.objstore, self.conn, path)
else:
wok_log.error("Unable to decrement volume used_by on"
" delete because no path could be found.")
dom.detachDeviceFlags(etree.tostring(disk),
get_vm_config_flag(dom, 'all'))
except Exception as e:
raise OperationFailed("KCHVMSTOR0010E", {'error': e.message})
if used_by is not None and vm_name in used_by:
used_by.remove(vm_name)
set_disk_used_by(self.objstore, path, used_by)
else:
wok_log.error("Unable to update %s:%s used_by on delete."
% (vm_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
})
pci_devs = [(DeviceModel.deduce_dev_name(e, self.conn), e)
for e in hostdev if e.attrib['type'] == 'pci']
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)
break
else:
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})
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})
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 not pci_devs.get(dev_name):
raise NotFoundError(
'KCHVMHDEV0001E', {'vmid': vmid, 'dev_name': dev_name}
)
dev_name_elem = pci_devs[dev_name]
self._managed = dev_name_elem.get('managed', 'no') == 'yes'
# check for multifunction and detach all functions together
try:
multi = self.unplug_multifunction_pci(
dom, hostdev, dev_name_elem)
except libvirt.libvirtError:
multi = False
# successfully detached all functions: finish operation
if multi:
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
# detach individually
xmlstr = etree.tostring(dev_name_elem)
dom.detachDeviceFlags(xmlstr, get_vm_config_flag(dom, mode='all'))
if dev_name_elem.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)
if DOM_STATE_MAP[dom.info()[0]] == 'shutoff':
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 not pci_devs.get(dev_name):
raise NotFoundError(
'KCHVMHDEV0001E', {'vmid': vmid, 'dev_name': dev_name}
)
dev_name_elem = pci_devs[dev_name]
self._managed = dev_name_elem.get('managed', 'no') == 'yes'
# check for multifunction and detach all functions together
try:
multi = self.unplug_multifunction_pci(
dom, hostdev, dev_name_elem)
except libvirt.libvirtError:
multi = False
# successfully detached all functions: finish operation
if multi:
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
# detach individually
xmlstr = etree.tostring(dev_name_elem)
dom.detachDeviceFlags(xmlstr, get_vm_config_flag(dom, mode='all'))
if dev_name_elem.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)
if DOM_STATE_MAP[dom.info()[0]] == 'shutoff':
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']})
# check for multifunction and detach all functions together
try:
multi = self._unplug_multifunction_pci(dom, hostdev, dev_name)
except libvirt.libvirtError:
multi = False
# successfully detached all functions: finish operation
if multi:
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
# detach each function individually
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:
msg = WokMessage('KCHVMHDEV0001E',
{'vmid': vmid, 'dev_name': dev_name})
cb(msg.get_text(), False)
raise NotFoundError('KCHVMHDEV0001E',
{'vmid': vmid, 'dev_name': dev_name})
if DOM_STATE_MAP[dom.info()[0]] == "shutoff":
cb('OK', True)
def _attach_multifunction_devices(self, dom, pci_infos, driver, vmid):
slot = 0
is_multifunction = len(pci_infos) > 1
device_flags = get_vm_config_flag(dom, mode='all')
with RollbackContext() as rollback:
# multifuction: try to attach all functions together within one
# xml file. It requires libvirt support.
if is_multifunction:
# search for the first available slot in guest xml
slot = self._available_slot(dom)
xmlstr = self._get_pci_devices_xml(pci_infos, slot, driver)
try:
dom.attachDeviceFlags(xmlstr, device_flags)
except libvirt.libvirtError:
# If operation fails, we try the other way, where each
# function is attached individually
pass
else:
rollback.prependDefer(
dom.detachDeviceFlags, xmlstr, device_flags
)
rollback.commitAll()
if DOM_STATE_MAP[dom.info()[0]] == 'shutoff':
self._cb('OK', True)
return
# attach each function individually (multi or single function)
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:
msg = WokMessage(
'KCHVMHDEV0007E', {
'device': pci_info['name'], 'vm': vmid}
)
self._cb(msg.get_text(), False)
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()
def _attach_multifunction_devices(self, dom, pci_infos, driver, vmid):
slot = 0
is_multifunction = len(pci_infos) > 1
device_flags = get_vm_config_flag(dom, mode='all')
with RollbackContext() as rollback:
# multifuction: try to attach all functions together within one
# xml file. It requires libvirt support.
if is_multifunction:
# search for the first available slot in guest xml
slot = self._available_slot(dom)
xmlstr = self._get_pci_devices_xml(pci_infos, slot, driver)
try:
dom.attachDeviceFlags(xmlstr, device_flags)
except libvirt.libvirtError:
# If operation fails, we try the other way, where each
# function is attached individually
pass
else:
rollback.prependDefer(
dom.detachDeviceFlags, xmlstr, device_flags
)
rollback.commitAll()
if DOM_STATE_MAP[dom.info()[0]] == 'shutoff':
self._cb('OK', True)
return
# attach each function individually (multi or single function)
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:
msg = WokMessage(
'KCHVMHDEV0007E', {
'device': pci_info['name'], 'vm': vmid}
)
self._cb(msg.get_text(), False)
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()
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
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:
msg = WokMessage('KCHVMHDEV0001E', {
'vmid': vmid,
'dev_name': dev_name
})
cb(msg.get_text(), False)
raise NotFoundError('KCHVMHDEV0001E', {
'vmid': vmid,
'dev_name': dev_name
})
if DOM_STATE_MAP[dom.info()[0]] == "shutoff":
cb('OK', True)
def unplug_multifunction_pci(self, dom, hostdevs, dev_elem):
if not self.is_hostdev_multifunction(dev_elem):
return False
devices = self.get_devices_same_addr(hostdevs, dev_elem)
if len(devices) <= 1:
return False
devices_xml = '<devices>%s</devices>' % ''.join(devices)
dom.detachDeviceFlags(devices_xml, get_vm_config_flag(dom, mode='all'))
return True
def unplug_multifunction_pci(self, dom, hostdevs, dev_elem):
if not self.is_hostdev_multifunction(dev_elem):
return False
devices = self.get_devices_same_addr(hostdevs, dev_elem)
if len(devices) <= 1:
return False
devices_xml = '<devices>%s</devices>' % ''.join(devices)
dom.detachDeviceFlags(devices_xml, get_vm_config_flag(dom, mode='all'))
return True
def _hotunplug_multifunction_pci(self, dom, hostdev, dev_name):
domain, bus, slot, _ = dev_name.split('_')[1:]
# get all devices attached to the guest in the same domain+bus+slot
# that the one we are going to detach because they must be detached
# together
devices = self._get_devices_same_addr(hostdev, int(domain, 16),
int(bus, 16), int(slot, 16))
if len(devices) <= 1:
return False
devices_xml = '<devices>%s</devices>' % ''.join(devices)
dom.detachDeviceFlags(devices_xml, get_vm_config_flag(dom, mode='all'))
return True
def _delete_affected_pci_devices(self, dom, dev_name, pci_devs):
try:
self.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'))
def _delete_affected_pci_devices(self, dom, dev_name, pci_devs):
try:
self.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.iteritems():
if pci_name in affected_names:
xmlstr = etree.tostring(e)
dom.detachDeviceFlags(
xmlstr, get_vm_config_flag(dom, mode='all'))
def _hotunplug_multifunction_pci(self, dom, hostdev, dev_name):
domain, bus, slot, _ = dev_name.split('_')[1:]
# get all devices attached to the guest in the same domain+bus+slot
# that the one we are going to detach because they must be detached
# together
devices = self._get_devices_same_addr(hostdev,
int(domain, 16),
int(bus, 16),
int(slot, 16))
if len(devices) <= 1:
return False
devices_xml = '<devices>%s</devices>' % ''.join(devices)
dom.detachDeviceFlags(devices_xml,
get_vm_config_flag(dom, mode='all'))
return True
def update(self, vm_name, dev_name, params):
old_disk_used_by = None
new_disk_used_by = None
dom = VMModel.get_vm(vm_name, self.conn)
dev_info = self.lookup(vm_name, dev_name)
if dev_info['type'] != 'cdrom':
raise InvalidOperation("KCHVMSTOR0006E")
params['path'] = params.get('path', '')
old_disk_path = dev_info['path']
new_disk_path = params['path']
if new_disk_path != old_disk_path:
# An empty path means a CD-ROM was empty or ejected:
if old_disk_path is not '':
old_disk_used_by = get_disk_used_by(
self.objstore, self.conn, old_disk_path)
if new_disk_path is not '':
new_disk_used_by = get_disk_used_by(
self.objstore, self.conn, new_disk_path)
dev_info.update(params)
dev, xml = get_disk_xml(dev_info)
try:
dom.updateDeviceFlags(xml, get_vm_config_flag(dom, 'all'))
except Exception as e:
raise OperationFailed("KCHVMSTOR0009E", {'error': e.message})
try:
if old_disk_used_by is not None and \
vm_name in old_disk_used_by:
old_disk_used_by.remove(vm_name)
set_disk_used_by(self.objstore, old_disk_path,
old_disk_used_by)
if new_disk_used_by is not None:
new_disk_used_by.append(vm_name)
set_disk_used_by(self.objstore, new_disk_path,
new_disk_used_by)
except Exception as e:
wok_log.error("Unable to update dev used_by on update due to"
" %s:" % e.message)
return dev
def _attach_scsi_device(self, cb, params):
cb('Attaching SCSI device...')
self._cb = cb
vmid = params['vmid']
dev_info = params['dev_info']
lock = params['lock']
try:
self._passthrough_device_validate(dev_info['name'])
except InvalidParameter as e:
cb(str(e), False)
raise
with lock:
dom = VMModel.get_vm(vmid, self.conn)
with RollbackContext() as rollback:
xmlstr = self._get_scsi_device_xml(dev_info)
device_flags = get_vm_config_flag(dom, mode='all')
try:
cb('Attaching device to VM')
dom.attachDeviceFlags(xmlstr, device_flags)
except libvirt.libvirtError:
msg = WokMessage(
'KCHVMHDEV0007E', {
'device': dev_info['name'], 'vm': vmid}
)
cb(msg.get_text(), False)
wok_log.error(
'Failed to attach host device %s to VM %s: \n%s',
dev_info['name'],
vmid,
xmlstr,
)
raise
rollback.prependDefer(
dom.detachDeviceFlags, xmlstr, device_flags)
rollback.commitAll()
if DOM_STATE_MAP[dom.info()[0]] == 'shutoff':
cb('OK', True)
def update(self, vm_name, dev_name, params):
old_disk_used_by = None
new_disk_used_by = None
dom = VMModel.get_vm(vm_name, self.conn)
dev_info = self.lookup(vm_name, dev_name)
if dev_info['type'] != 'cdrom':
raise InvalidOperation("KCHVMSTOR0006E")
params['path'] = params.get('path', '')
old_disk_path = dev_info['path']
new_disk_path = params['path']
if new_disk_path != old_disk_path:
# An empty path means a CD-ROM was empty or ejected:
if old_disk_path is not '':
old_disk_used_by = get_disk_used_by(
self.objstore, self.conn, old_disk_path)
if new_disk_path is not '':
new_disk_used_by = get_disk_used_by(
self.objstore, self.conn, new_disk_path)
dev_info.update(params)
dev, xml = get_disk_xml(dev_info)
try:
dom.updateDeviceFlags(xml, get_vm_config_flag(dom, 'all'))
except Exception as e:
raise OperationFailed("KCHVMSTOR0009E", {'error': e.message})
try:
if old_disk_used_by is not None and \
vm_name in old_disk_used_by:
old_disk_used_by.remove(vm_name)
set_disk_used_by(self.objstore, old_disk_path,
old_disk_used_by)
if new_disk_used_by is not None:
new_disk_used_by.append(vm_name)
set_disk_used_by(self.objstore, new_disk_path,
new_disk_used_by)
except Exception as e:
wok_log.error("Unable to update dev used_by on update due to"
" %s:" % e.message)
return dev
def _attach_scsi_device(self, cb, params):
cb('Attaching SCSI device...')
self._cb = cb
vmid = params['vmid']
dev_info = params['dev_info']
lock = params['lock']
try:
self._passthrough_device_validate(dev_info['name'])
except InvalidParameter as e:
cb(str(e), False)
raise
with lock:
dom = VMModel.get_vm(vmid, self.conn)
with RollbackContext() as rollback:
xmlstr = self._get_scsi_device_xml(dev_info)
device_flags = get_vm_config_flag(dom, mode='all')
try:
cb('Attaching device to VM')
dom.attachDeviceFlags(xmlstr, device_flags)
except libvirt.libvirtError:
msg = WokMessage(
'KCHVMHDEV0007E', {
'device': dev_info['name'], 'vm': vmid}
)
cb(msg.get_text(), False)
wok_log.error(
'Failed to attach host device %s to VM %s: \n%s',
dev_info['name'],
vmid,
xmlstr,
)
raise
rollback.prependDefer(
dom.detachDeviceFlags, xmlstr, device_flags)
rollback.commitAll()
if DOM_STATE_MAP[dom.info()[0]] == 'shutoff':
cb('OK', True)
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)
def update(self, vm_name, dev_name, params):
old_disk_used_by = None
new_disk_used_by = None
dom = VMModel.get_vm(vm_name, self.conn)
dev_info = self.lookup(vm_name, dev_name)
if dev_info['type'] != 'cdrom':
raise InvalidOperation('KCHVMSTOR0006E')
params['path'] = params.get('path', '')
old_disk_path = dev_info['path']
new_disk_path = params['path']
if new_disk_path != old_disk_path:
# An empty path means a CD-ROM was empty or ejected:
if old_disk_path != '':
old_disk_used_by = get_disk_used_by(self.conn, old_disk_path)
if new_disk_path != '':
new_disk_used_by = get_disk_used_by(self.conn, new_disk_path)
dev_info.update(params)
dev, xml = get_disk_xml(dev_info)
try:
# FIXME: when updating from local file to remote file (http)
# libvirt adds a new device with same name instead of replacing
# the existing one
dom.updateDeviceFlags(xml, get_vm_config_flag(dom, 'all'))
except Exception as e:
raise OperationFailed('KCHVMSTOR0009E', {'error': str(e)})
try:
if old_disk_used_by is not None and vm_name in old_disk_used_by:
old_disk_used_by.remove(vm_name)
if new_disk_used_by is not None:
new_disk_used_by.append(vm_name)
except Exception as e:
wok_log.error(
'Unable to update dev used_by on update due to' ' %s:' % str(e)
)
return dev
def _attach_usb_device(self, cb, params):
cb('Attaching USB device...')
vmid = params['vmid']
dev_info = params['dev_info']
dom = VMModel.get_vm(vmid, self.conn)
with RollbackContext() as rollback:
cb('Reading source device XML')
xmlstr = self._get_usb_device_xml(dev_info)
device_flags = get_vm_config_flag(dom, mode='all')
try:
cb('Attaching device to VM')
dom.attachDeviceFlags(xmlstr, device_flags)
except libvirt.libvirtError:
wok_log.error('Failed to attach host device %s to VM %s: \n%s',
dev_info['name'], vmid, xmlstr)
raise
rollback.prependDefer(dom.detachDeviceFlags, xmlstr, device_flags)
rollback.commitAll()
cb('OK', True)
def _attach_usb_device(self, cb, params):
cb('Attaching USB device...')
vmid = params['vmid']
dev_info = params['dev_info']
dom = VMModel.get_vm(vmid, self.conn)
with RollbackContext() as rollback:
cb('Reading source device XML')
xmlstr = self._get_usb_device_xml(dev_info)
device_flags = get_vm_config_flag(dom, mode='all')
try:
cb('Attaching device to VM')
dom.attachDeviceFlags(xmlstr, device_flags)
except libvirt.libvirtError:
wok_log.error('Failed to attach host device %s to VM %s: \n%s',
dev_info['name'], vmid, xmlstr)
raise
rollback.prependDefer(dom.detachDeviceFlags, xmlstr, device_flags)
rollback.commitAll()
cb('OK', True)
def update(self, vm_name, dev_name, params):
old_disk_used_by = None
new_disk_used_by = None
dom = VMModel.get_vm(vm_name, self.conn)
dev_info = self.lookup(vm_name, dev_name)
if dev_info['type'] != 'cdrom':
raise InvalidOperation('KCHVMSTOR0006E')
params['path'] = params.get('path', '')
old_disk_path = dev_info['path']
new_disk_path = params['path']
if new_disk_path != old_disk_path:
# An empty path means a CD-ROM was empty or ejected:
if old_disk_path != '':
old_disk_used_by = get_disk_used_by(self.conn, old_disk_path)
if new_disk_path != '':
new_disk_used_by = get_disk_used_by(self.conn, new_disk_path)
dev_info.update(params)
dev, xml = get_disk_xml(dev_info)
try:
# FIXME: when updating from local file to remote file (http)
# libvirt adds a new device with same name instead of replacing
# the existing one
dom.updateDeviceFlags(xml, get_vm_config_flag(dom, 'all'))
except Exception as e:
raise OperationFailed('KCHVMSTOR0009E', {'error': str(e)})
try:
if old_disk_used_by is not None and vm_name in old_disk_used_by:
old_disk_used_by.remove(vm_name)
if new_disk_used_by is not None:
new_disk_used_by.append(vm_name)
except Exception as e:
wok_log.error('Unable to update dev used_by on update due to'
' %s:' % str(e))
return dev
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
})
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']})
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)
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']
def create(self, vm_name, params):
# Path will never be blank due to API.json verification.
# There is no need to cover this case here.
if not ('vol' in params) ^ ('path' in params):
if not is_s390x():
raise InvalidParameter('KCHVMSTOR0017E')
if 'dir_path' not in params:
raise InvalidParameter('KCHVMSTOR0019E')
dom = VMModel.get_vm(vm_name, self.conn)
params['bus'] = _get_device_bus(params['type'], dom)
if is_s390x() and params['type'] == 'disk' and 'dir_path' in params:
if 'format' not in params:
raise InvalidParameter('KCHVMSTOR0020E')
size = params['size']
name = params['name']
dir_path = params.get('dir_path')
params['path'] = dir_path + '/' + name
if os.path.exists(params['path']):
raise InvalidParameter(
'KCHVMSTOR0021E', {'disk_path': params['path']})
create_disk_image(
format_type=params['format'], path=params['path'], capacity=size
)
else:
params['format'] = 'raw'
dev_list = [
dev for dev, bus in get_vm_disks(dom).items() if bus == params['bus']
]
dev_list.sort()
if len(dev_list) == 0:
params['index'] = 0
else:
char = dev_list.pop()[2]
params['index'] = string.ascii_lowercase.index(char) + 1
if (
params['bus'] not in HOTPLUG_TYPE and
DOM_STATE_MAP[dom.info()[0]] != 'shutoff'
):
raise InvalidOperation('KCHVMSTOR0011E')
if params.get('vol'):
vol_info = self._get_vol_info(params)
params['path'] = vol_info['path']
params['disk'] = vol_info['type']
params.update(self._get_available_bus_address(params['bus'], vm_name))
# Add device to VM
dev, xml = get_disk_xml(params)
try:
dom = VMModel.get_vm(vm_name, self.conn)
dom.attachDeviceFlags(xml, get_vm_config_flag(dom, 'all'))
except Exception as e:
raise OperationFailed('KCHVMSTOR0008E', {'error': str(e)})
# Don't put a try-block here. Let the exception be raised. If we
# allow disks used_by to be out of sync, data corruption could
# occur if a disk is added to two guests unknowingly.
if params.get('vol'):
used_by = vol_info['used_by']
used_by.append(vm_name)
return dev
def create(self, vm_name, params):
# Path will never be blank due to API.json verification.
# There is no need to cover this case here.
if not ('vol' in params) ^ ('path' in params):
if not is_s390x():
raise InvalidParameter('KCHVMSTOR0017E')
if 'dir_path' not in params:
raise InvalidParameter('KCHVMSTOR0019E')
dom = VMModel.get_vm(vm_name, self.conn)
params['bus'] = _get_device_bus(params['type'], dom)
if is_s390x() and params['type'] == 'disk' and 'dir_path' in params:
if 'format' not in params:
raise InvalidParameter('KCHVMSTOR0020E')
size = params['size']
name = params['name']
dir_path = params.get('dir_path')
params['path'] = dir_path + '/' + name
if os.path.exists(params['path']):
raise InvalidParameter('KCHVMSTOR0021E',
{'disk_path': params['path']})
create_disk_image(format_type=params['format'],
path=params['path'],
capacity=size)
else:
params['format'] = 'raw'
dev_list = [
dev for dev, bus in get_vm_disks(dom).items()
if bus == params['bus']
]
dev_list.sort()
if len(dev_list) == 0:
params['index'] = 0
else:
char = dev_list.pop()[2]
params['index'] = string.ascii_lowercase.index(char) + 1
if (params['bus'] not in HOTPLUG_TYPE
and DOM_STATE_MAP[dom.info()[0]] != 'shutoff'):
raise InvalidOperation('KCHVMSTOR0011E')
if params.get('vol'):
vol_info = self._get_vol_info(params)
params['path'] = vol_info['path']
params['disk'] = vol_info['type']
params.update(self._get_available_bus_address(params['bus'], vm_name))
# Add device to VM
dev, xml = get_disk_xml(params)
try:
dom = VMModel.get_vm(vm_name, self.conn)
dom.attachDeviceFlags(xml, get_vm_config_flag(dom, 'all'))
except Exception as e:
raise OperationFailed('KCHVMSTOR0008E', {'error': str(e)})
# Don't put a try-block here. Let the exception be raised. If we
# allow disks used_by to be out of sync, data corruption could
# occur if a disk is added to two guests unknowingly.
if params.get('vol'):
used_by = vol_info['used_by']
used_by.append(vm_name)
return dev
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']
def _attach_usb_device(self, vmid, dev_info):
xmlstr = self._get_usb_device_xml(dev_info)
dom = VMModel.get_vm(vmid, self.conn)
dom.attachDeviceFlags(xmlstr, get_vm_config_flag(dom, mode='all'))
return dev_info['name']
def _attach_pci_device(self, cb, params):
cb('Attaching PCI device')
self._cb = cb
vmid = params['vmid']
dev_info = params['dev_info']
lock = params['lock']
try:
self._passthrough_device_validate(dev_info['name'])
except InvalidParameter as e:
cb(e.message, False)
raise
with lock:
try:
self._validate_pci_passthrough_env()
except InvalidOperation as e:
cb(e.message, False)
raise
dom = VMModel.get_vm(vmid, self.conn)
driver = 'vfio' if self.caps.kernel_vfio else 'kvm'
# 'vfio' systems requires a usb controller in order to support pci
# hotplug on Power.
if driver == 'vfio' and platform.machine().startswith('ppc') and \
DOM_STATE_MAP[dom.info()[0]] != "shutoff" and \
not self.have_usb_controller(vmid):
msg = WokMessage('KCHVMHDEV0008E', {'vmid': vmid})
cb(msg.get_text(), False)
raise InvalidOperation("KCHVMHDEV0008E", {'vmid': vmid})
# Attach all PCI devices in the same IOMMU group
affected_names = self.devs_model.get_list(
_passthrough_affected_by=dev_info['name'])
passthrough_names = self.devs_model.get_list(
_cap='pci', _passthrough='true')
group_names = list(set(affected_names) & set(passthrough_names))
pci_infos = [self.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 = self.dev_model.is_device_3D_controller(dev_info)
if is_3D_device and DOM_STATE_MAP[dom.info()[0]] != "shutoff":
msg = WokMessage('KCHVMHDEV0006E', {'name': dev_info['name']})
cb(msg.get_text(), False)
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:
msg = WokMessage('KCHVMHDEV0005E',
{'name': pci_info['name']})
cb(msg.get_text(), False)
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:
# multifuction: try to attach all functions together within one
# xml file. It requires libvirt support.
if is_multifunction:
xmlstr = self._get_pci_devices_xml(pci_infos, slot, driver)
try:
dom.attachDeviceFlags(xmlstr, device_flags)
except libvirt.libvirtError:
# If operation fails, we try the other way, where each
# function is attached individually
pass
else:
rollback.prependDefer(dom.detachDeviceFlags, xmlstr,
device_flags)
rollback.commitAll()
if DOM_STATE_MAP[dom.info()[0]] == "shutoff":
cb('OK', True)
return
# attach each function individually (multi or single function)
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:
msg = WokMessage('KCHVMHDEV0007E',
{'device': pci_info['name'],
'vm': vmid})
cb(msg.get_text(), False)
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()
if DOM_STATE_MAP[dom.info()[0]] == "shutoff":
cb('OK', True)
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(
'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()
cb('OK', True)
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(
'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()
cb('OK', True)
def _attach_usb_device(self, vmid, dev_info):
xmlstr = self._get_usb_device_xml(dev_info)
dom = VMModel.get_vm(vmid, self.conn)
dom.attachDeviceFlags(xmlstr, get_vm_config_flag(dom, mode='all'))
return dev_info['name']
def _attach_pci_device(self, cb, params):
cb('Attaching PCI device')
self._cb = cb
vmid = params['vmid']
dev_info = params['dev_info']
lock = params['lock']
try:
self._passthrough_device_validate(dev_info['name'])
except InvalidParameter as e:
cb(e.message, False)
raise
with lock:
try:
self._validate_pci_passthrough_env()
except InvalidOperation as e:
cb(e.message, False)
raise
dom = VMModel.get_vm(vmid, self.conn)
driver = 'vfio' if self.caps.kernel_vfio else 'kvm'
# 'vfio' systems requires a usb controller in order to support pci
# hotplug on Power.
if driver == 'vfio' and platform.machine().startswith('ppc') and \
DOM_STATE_MAP[dom.info()[0]] != "shutoff" and \
not self.have_usb_controller(vmid):
msg = WokMessage('KCHVMHDEV0008E', {'vmid': vmid})
cb(msg.get_text(), False)
raise InvalidOperation("KCHVMHDEV0008E", {'vmid': vmid})
# Attach all PCI devices in the same IOMMU group
affected_names = self.devs_model.get_list(
_passthrough_affected_by=dev_info['name'])
passthrough_names = self.devs_model.get_list(_cap='pci',
_passthrough='true')
group_names = list(set(affected_names) & set(passthrough_names))
pci_infos = [
self.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 = self.dev_model.is_device_3D_controller(dev_info)
if is_3D_device and DOM_STATE_MAP[dom.info()[0]] != "shutoff":
msg = WokMessage('KCHVMHDEV0006E', {'name': dev_info['name']})
cb(msg.get_text(), False)
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:
msg = WokMessage('KCHVMHDEV0005E',
{'name': pci_info['name']})
cb(msg.get_text(), False)
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:
# multifuction: try to attach all functions together within one
# xml file. It requires libvirt support.
if is_multifunction:
xmlstr = self._get_pci_devices_xml(pci_infos, slot, driver)
try:
dom.attachDeviceFlags(xmlstr, device_flags)
except libvirt.libvirtError:
# If operation fails, we try the other way, where each
# function is attached individually
pass
else:
rollback.prependDefer(dom.detachDeviceFlags, xmlstr,
device_flags)
rollback.commitAll()
if DOM_STATE_MAP[dom.info()[0]] == "shutoff":
cb('OK', True)
return
# attach each function individually (multi or single function)
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:
msg = WokMessage('KCHVMHDEV0007E', {
'device': pci_info['name'],
'vm': vmid
})
cb(msg.get_text(), False)
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()
if DOM_STATE_MAP[dom.info()[0]] == "shutoff":
cb('OK', True)
def create(self, vm_name, params):
vol_model = None
# Path will never be blank due to API.json verification.
# There is no need to cover this case here.
if not ('vol' in params) ^ ('path' in params):
raise InvalidParameter("KCHVMSTOR0017E")
dom = VMModel.get_vm(vm_name, self.conn)
params['bus'] = _get_device_bus(params['type'], dom)
params['format'] = 'raw'
dev_list = [dev for dev, bus in get_vm_disks(dom).iteritems()
if bus == params['bus']]
dev_list.sort()
if len(dev_list) == 0:
params['index'] = 0
else:
char = dev_list.pop()[2]
params['index'] = string.ascii_lowercase.index(char) + 1
if (params['bus'] not in HOTPLUG_TYPE and
DOM_STATE_MAP[dom.info()[0]] != 'shutoff'):
raise InvalidOperation('KCHVMSTOR0011E')
if params.get('vol'):
try:
pool = params['pool']
vol_model = StorageVolumeModel(conn=self.conn,
objstore=self.objstore)
vol_info = vol_model.lookup(pool, params['vol'])
except KeyError:
raise InvalidParameter("KCHVMSTOR0012E")
except Exception as e:
raise InvalidParameter("KCHVMSTOR0015E", {'error': e})
if len(vol_info['used_by']) != 0:
raise InvalidParameter("KCHVMSTOR0016E")
valid_format = {
"disk": ["raw", "bochs", "qcow", "qcow2", "qed", "vmdk"],
"cdrom": "iso"}
if vol_info['type'] == 'file':
if (params['type'] == 'disk' and
vol_info['format'] in valid_format[params['type']]):
params['format'] = vol_info['format']
else:
raise InvalidParameter("KCHVMSTOR0018E",
{"format": vol_info['format'],
"type": params['type']})
if (params['format'] == 'raw' and not vol_info['isvalid']):
message = 'This is not a valid RAW disk image.'
raise OperationFailed('KCHVMSTOR0008E', {'error': message})
params['path'] = vol_info['path']
params['disk'] = vol_info['type']
params.update(self._get_available_bus_address(params['bus'], vm_name))
# Add device to VM
dev, xml = get_disk_xml(params)
try:
dom = VMModel.get_vm(vm_name, self.conn)
dom.attachDeviceFlags(xml, get_vm_config_flag(dom, 'all'))
except Exception as e:
raise OperationFailed("KCHVMSTOR0008E", {'error': e.message})
# Don't put a try-block here. Let the exception be raised. If we
# allow disks used_by to be out of sync, data corruption could
# occour if a disk is added to two guests unknowingly.
if params.get('vol'):
used_by = vol_info['used_by']
used_by.append(vm_name)
set_disk_used_by(self.objstore, params['path'], used_by)
return dev
def create(self, vm_name, params):
vol_model = None
# Path will never be blank due to API.json verification.
# There is no need to cover this case here.
if not ('vol' in params) ^ ('path' in params):
raise InvalidParameter("KCHVMSTOR0017E")
dom = VMModel.get_vm(vm_name, self.conn)
params['bus'] = _get_device_bus(params['type'], dom)
params['format'] = 'raw'
dev_list = [dev for dev, bus in get_vm_disks(dom).iteritems()
if bus == params['bus']]
dev_list.sort()
if len(dev_list) == 0:
params['index'] = 0
else:
char = dev_list.pop()[2]
params['index'] = string.ascii_lowercase.index(char) + 1
if (params['bus'] not in HOTPLUG_TYPE and
DOM_STATE_MAP[dom.info()[0]] != 'shutoff'):
raise InvalidOperation('KCHVMSTOR0011E')
if params.get('vol'):
try:
pool = params['pool']
vol_model = StorageVolumeModel(conn=self.conn,
objstore=self.objstore)
vol_info = vol_model.lookup(pool, params['vol'])
except KeyError:
raise InvalidParameter("KCHVMSTOR0012E")
except Exception as e:
raise InvalidParameter("KCHVMSTOR0015E", {'error': e})
if len(vol_info['used_by']) != 0:
raise InvalidParameter("KCHVMSTOR0016E")
valid_format = {
"disk": ["raw", "qcow", "qcow2", "qed", "vmdk", "vpc"],
"cdrom": "iso"}
if vol_info['type'] == 'file':
if (params['type'] == 'disk' and
vol_info['format'] in valid_format[params['type']]):
params['format'] = vol_info['format']
else:
raise InvalidParameter("KCHVMSTOR0018E",
{"format": vol_info['format'],
"type": params['type']})
if (params['format'] == 'raw' and not vol_info['isvalid']):
message = 'This is not a valid RAW disk image.'
raise OperationFailed('KCHVMSTOR0008E', {'error': message})
params['path'] = vol_info['path']
params['disk'] = vol_info['type']
params.update(self._get_available_bus_address(params['bus'], vm_name))
# Add device to VM
dev, xml = get_disk_xml(params)
try:
dom = VMModel.get_vm(vm_name, self.conn)
dom.attachDeviceFlags(xml, get_vm_config_flag(dom, 'all'))
except Exception as e:
raise OperationFailed("KCHVMSTOR0008E", {'error': e.message})
# Don't put a try-block here. Let the exception be raised. If we
# allow disks used_by to be out of sync, data corruption could
# occour if a disk is added to two guests unknowingly.
if params.get('vol'):
used_by = vol_info['used_by']
used_by.append(vm_name)
set_disk_used_by(self.objstore, params['path'], used_by)
return dev
