def _update_interface_params(params, dev):
iface = vmxml.find_attr(dev, 'target', 'bus')
if iface is not None:
params['iface'] = iface
dev_name = vmxml.find_attr(dev, 'target', 'dev')
if dev_name is not None:
params['name'] = dev_name
def _update_hostdev_params(params, dev):
boot_order = vmxml.find_attr(dev, 'boot', 'order')
if boot_order:
params['bootOrder'] = boot_order
driver = vmxml.find_attr(dev, 'driver', 'name')
if driver:
params['driver'] = driver
def all_channels(self):
if self.devices:
for channel in vmxml.find_all(self.devices, 'channel'):
name = vmxml.find_attr(channel, 'target', 'name')
path = vmxml.find_attr(channel, 'source', 'path')
if name and path:
yield name, path
def _update_hostdev_params(params, dev):
boot_order = vmxml.find_attr(dev, 'boot', 'order')
if boot_order:
params['bootOrder'] = boot_order
driver = vmxml.find_attr(dev, 'driver', 'name')
if driver:
params['driver'] = driver
def _update_interface_params(params, dev):
iface = vmxml.find_attr(dev, 'target', 'bus')
if iface is not None:
params['iface'] = iface
dev_name = vmxml.find_attr(dev, 'target', 'dev')
if dev_name is not None:
params['name'] = dev_name
def from_xml_tree(cls, log, dev, meta):
params = {
'lease_id': vmxml.text(vmxml.find_first(dev, 'key')),
'sd_id': vmxml.text(vmxml.find_first(dev, 'lockspace')),
'path': vmxml.find_attr(dev, 'target', 'path'),
'offset': vmxml.find_attr(dev, 'target', 'offset'),
}
return cls(log, **params)
def from_xml_tree(cls, log, dev, meta):
params = {
'lease_id': vmxml.text(vmxml.find_first(dev, 'key')),
'sd_id': vmxml.text(vmxml.find_first(dev, 'lockspace')),
'path': vmxml.find_attr(dev, 'target', 'path'),
'offset': vmxml.find_attr(dev, 'target', 'offset'),
}
return cls(log, **params)
def from_xml_tree(cls, log, dev, meta):
params = {
'device': core.find_device_type(dev),
'type': dev.tag,
'custom': meta.get('custom', {}),
'vmid': meta['vmid'],
'vm_custom': {},
'specParams': {},
}
core.update_device_params(params, dev)
params.update(core.get_xml_elem(dev, 'macAddr', 'mac', 'address'))
params.update(core.get_xml_elem(dev, 'nicModel', 'model', 'type'))
params.update(core.get_xml_elem(dev, 'bootOrder', 'boot', 'order'))
if params['device'] == 'hostdev':
params.update(_get_hostdev_params(dev))
link = vmxml.find_first(dev, 'link', None)
if link is not None:
if link.attrib.get('state', 'down') == 'down':
params['linkActive'] = False
else:
params['linkActive'] = True
vlan = vmxml.find_first(dev, 'vlan', None)
if vlan is not None:
params['specParams']['vlanid'] = vmxml.find_attr(vlan, 'tag', 'id')
mtu = vmxml.find_first(dev, "mtu", None)
if mtu is not None:
params['mtu'] = int(vmxml.attr(mtu, 'size'))
filterref = vmxml.find_first(dev, 'filterref', None)
if filterref is not None:
params['filter'] = vmxml.attr(filterref, 'filter')
params['filterParameters'] = [{
'name': param.attrib['name'],
'value': param.attrib['value'],
} for param in vmxml.find_all(filterref, 'parameter')]
driver = vmxml.find_first(dev, 'driver', None)
if driver is not None:
params['custom'].update(
core.parse_device_attrs(driver, ('queues', )))
sndbuf = dev.find('./tune/sndbuf')
if sndbuf is not None:
params['vm_custom']['sndbuf'] = vmxml.text(sndbuf)
bandwidth = vmxml.find_first(dev, 'bandwidth', None)
if bandwidth is not None:
for mode in ('inbound', 'outbound'):
elem = vmxml.find_first(bandwidth, mode, None)
if elem is not None:
params['specParams'][mode] = elem.attrib.copy()
net = (meta.get('network', None)
or vmxml.find_attr(dev, 'source', 'bridge'))
if net is None:
raise MissingNetwork("no network to join")
params['network'] = net
_update_port_mirroring(params, meta)
core.update_device_params_from_meta(params, meta)
return cls(log, **params)
def from_xml_tree(cls, log, dev, meta):
params = {
'type': dev.tag,
'device': core.find_device_type(dev),
'lease_id': vmxml.text(vmxml.find_first(dev, 'key')),
'sd_id': vmxml.text(vmxml.find_first(dev, 'lockspace')),
'path': vmxml.find_attr(dev, 'target', 'path'),
'offset': vmxml.find_attr(dev, 'target', 'offset'),
}
core.update_device_params(params, dev)
return cls(log, **params)
def parse_xml(dev, meta):
params = {
'type': dev.tag,
'device': core.find_device_type(dev),
'lease_id': vmxml.text(vmxml.find_first(dev, 'key')),
'sd_id': vmxml.text(vmxml.find_first(dev, 'lockspace')),
'path': vmxml.find_attr(dev, 'target', 'path'),
'offset': vmxml.find_attr(dev, 'target', 'offset'),
}
core.update_device_params(params, dev)
core.update_device_params_from_meta(params, meta)
return params
def parse_xml(dev, meta):
params = {
'type': dev.tag,
'device': core.find_device_type(dev),
'lease_id': vmxml.text(vmxml.find_first(dev, 'key')),
'sd_id': vmxml.text(vmxml.find_first(dev, 'lockspace')),
'path': vmxml.find_attr(dev, 'target', 'path'),
'offset': vmxml.find_attr(dev, 'target', 'offset'),
}
core.update_device_params(params, dev)
core.update_device_params_from_meta(params, meta)
return params
def all_channels(self):
"""
Returns a tuple (name, path, state) for each channel device in domain
XML. Name and path are always non-empty strings, state is non-empty
string (connected/disconnected) or None if the channel state is
unknown.
"""
if self.devices is not None:
for channel in vmxml.find_all(self.devices, 'channel'):
name = vmxml.find_attr(channel, 'target', 'name')
path = vmxml.find_attr(channel, 'source', 'path')
state = vmxml.find_attr(channel, 'target', 'state')
if name and path:
yield name, path, (None if not state else state)
def from_xml_tree(cls, log, dev, meta):
params = parse_device_params(dev, attrs=('index', 'model', 'ports'))
params['device'] = params['type']
iothread = vmxml.find_attr(dev, 'driver', 'iothread')
if iothread:
params['specParams'] = {'ioThreadId': iothread}
return cls(log, **params)
def test_restore_paths(self):
xml = self.XML
second_disk_path = '/path/secondary-drive'
snapshot_params = {
'path': '/path/snapshot-path',
'volume_id': 'aaa',
'device': '/dev/random',
'second_disk_path': second_disk_path,
}
engine_params = {
'path': '/path/engine-path',
'volume_id': 'bbb',
'device': '/dev/urandom',
'second_disk_path': second_disk_path,
}
snapshot_xml = xml.format(**snapshot_params)
engine_xml = xml.format(**engine_params)
params = {
'_srcDomXML': snapshot_xml,
'xml': engine_xml,
'restoreState': {
'device': 'disk',
'imageID': u'111',
'poolID': u'222',
'domainID': u'333',
'volumeID': u'bbb',
},
'restoreFromSnapshot': True,
}
with fake.VM(params) as vm:
vm._normalizeVdsmImg = lambda *args: None
devices = vm._make_devices()
vm_xml = vm.conf['xml']
tested_drives = (
(
'1234',
engine_params['path'],
),
(
'5678',
second_disk_path,
),
)
for serial, path in tested_drives:
for d in devices[hwclass.DISK]:
if d.serial == serial:
self.assertEqual(d.path, path)
break
else:
raise Exception('Tested drive not found', serial)
dom = xmlutils.fromstring(vm_xml)
random = vmxml.find_first(dom, 'backend')
self.assertEqual(random.text, snapshot_params['device'])
for serial, path in tested_drives:
for d in dom.findall(".//disk[serial='{}']".format(serial)):
self.assertEqual(vmxml.find_attr(d, 'source', 'file'), path)
break
else:
raise Exception('Tested drive not found', serial)
self.assertEqual(vm_xml, vm._domain.xml)
def get_identifying_attrs(cls, dev_elem):
attrs = {'mac_address': vmxml.find_attr(dev_elem, 'mac', 'address')}
teaming = vmxml.find_first(dev_elem, 'teaming', None)
if teaming is not None:
attrs['alias'] = core.find_device_alias(dev_elem)
return attrs
def from_xml_tree(cls, log, dev, meta):
params = parse_device_params(dev, attrs=('index', 'model', 'ports'))
params['device'] = params['type']
iothread = vmxml.find_attr(dev, 'driver', 'iothread')
if iothread:
params['specParams'] = {'ioThreadId': iothread}
return cls(log, **params)
def from_xml_tree(cls, log, dev, meta):
params = parse_device_params(dev)
# override
params['device'] = vmxml.find_attr(dev, 'model', 'type')
params['specParams'] = parse_device_attrs(
vmxml.find_first(dev, 'model'), ('vram', 'heads', 'vgamem', 'ram'))
return cls(log, **params)
def from_xml_tree(cls, log, dev, meta):
params = parse_device_params(dev)
specParams = parse_device_attrs(dev, ('model', ))
backend = vmxml.find_first(dev, 'backend')
specParams['mode'] = vmxml.attr(backend, 'type')
specParams['path'] = vmxml.find_attr(dev, 'device', 'path')
params['specParams'] = specParams
return cls(log, **params)
def from_xml_tree(cls, log, dev, meta):
params = parse_device_params(dev)
# override
params['device'] = vmxml.find_attr(dev, 'model', 'type')
params['specParams'] = parse_device_attrs(
vmxml.find_first(dev, 'model'),
('vram', 'heads', 'vgamem', 'ram')
)
return cls(log, **params)
def from_xml_tree(cls, log, dev, meta):
params = parse_device_params(dev)
specParams = parse_device_attrs(dev, ('model',))
backend = vmxml.find_first(dev, 'backend')
specParams['mode'] = vmxml.attr(backend, 'type')
specParams['path'] = vmxml.find_attr(
dev, 'device', 'path')
params['specParams'] = specParams
return cls(log, **params)
def from_xml_tree(cls, log, dev, meta):
has_sock = dev.attrib.get('type', 'pty') == 'unix'
params = parse_device_params(dev)
params['specParams'] = {
'consoleType': vmxml.find_attr(dev, 'target', 'type'),
'enableSocket': has_sock,
}
params['vmid'] = meta['vmid']
return cls(log, **params)
def test_restore_paths(self):
xml = self.XML
second_disk_path = '/path/secondary-drive'
snapshot_params = {'path': '/path/snapshot-path',
'volume_id': 'aaa',
'device': '/dev/random',
'second_disk_path': second_disk_path,
}
engine_params = {'path': '/path/engine-path',
'volume_id': 'bbb',
'device': '/dev/urandom',
'second_disk_path': second_disk_path,
}
snapshot_xml = xml.format(**snapshot_params)
engine_xml = xml.format(**engine_params)
params = {'_srcDomXML': snapshot_xml,
'xml': engine_xml,
'restoreState': {
'device': 'disk',
'imageID': u'111',
'poolID': u'222',
'domainID': u'333',
'volumeID': u'bbb',
},
'restoreFromSnapshot': True,
}
with fake.VM(params) as vm:
vm._normalizeVdsmImg = lambda *args: None
devices = vm._make_devices()
vm_xml = vm.conf['xml']
# Check that unrelated devices are taken from the snapshot untouched,
# not from the XML provided from Engine:
for d in devices[hwclass.RNG]:
self.assertEqual(d.specParams['source'],
os.path.basename(snapshot_params['device']))
break
else:
raise Exception('RNG device not found')
tested_drives = (('1234', engine_params['path'],),
('5678', second_disk_path,),)
for serial, path in tested_drives:
for d in devices[hwclass.DISK]:
if d.serial == serial:
self.assertEqual(d.path, path)
break
else:
raise Exception('Tested drive not found', serial)
dom = xmlutils.fromstring(vm_xml)
random = vmxml.find_first(dom, 'backend')
self.assertEqual(random.text, snapshot_params['device'])
for serial, path in tested_drives:
for d in dom.findall(".//disk[serial='{}']".format(serial)):
self.assertEqual(vmxml.find_attr(d, 'source', 'file'), path)
break
else:
raise Exception('Tested drive not found', serial)
self.assertEqual(vm_xml, vm._domain.xml)
def from_xml_tree(cls, log, dev, meta):
has_sock = dev.attrib.get('type', 'pty') == 'unix'
params = parse_device_params(dev)
params['specParams'] = {
'consoleType': vmxml.find_attr(dev, 'target', 'type'),
'enableSocket': has_sock,
}
params['vmid'] = meta['vmid']
return cls(log, **params)
def _get_drive_identification(dom):
source = vmxml.find_first(dom, 'source', None)
if source is not None:
devPath = (vmxml.attr(source, 'file') or vmxml.attr(source, 'dev')
or vmxml.attr(source, 'name'))
else:
devPath = ''
name = vmxml.find_attr(dom, 'target', 'dev')
alias = core.find_device_alias(dom)
return alias, devPath, name
def from_xml_tree(cls, log, dev, meta):
params = {
'device': vmxml.find_attr(dev, 'model', 'type'),
'type': find_device_type(dev),
}
update_device_params(params, dev)
params['specParams'] = parse_device_attrs(
vmxml.find_first(dev, 'model'), ('vram', 'heads', 'vgamem', 'ram'))
update_device_params_from_meta(params, meta)
return cls(log, **params)
def _get_drive_identification(dom):
source = vmxml.find_first(dom, 'source', None)
if source is not None:
devPath = (vmxml.attr(source, 'file') or
vmxml.attr(source, 'dev') or
vmxml.attr(source, 'name'))
else:
devPath = ''
name = vmxml.find_attr(dom, 'target', 'dev')
alias = core.find_device_alias(dom)
return alias, devPath, name
def from_xml_tree(cls, log, dev, meta):
params = {
'device': find_device_type(dev),
'type': dev.tag,
}
update_device_params_from_meta(params, meta)
update_device_params(params, dev, attrs=('index', 'model', 'ports'))
iothread = vmxml.find_attr(dev, 'driver', 'iothread')
if iothread:
params['specParams'] = {'ioThreadId': iothread}
return cls(log, **params)
def from_xml_tree(cls, log, dev, meta):
params = {
'device': vmxml.find_attr(dev, 'model', 'type'),
'type': find_device_type(dev),
}
update_device_params(params, dev)
params['specParams'] = parse_device_attrs(
vmxml.find_first(dev, 'model'),
('vram', 'heads', 'vgamem', 'ram')
)
update_device_params_from_meta(params, meta)
return cls(log, **params)
def parse_volume_chain(self, disk_xml):
"""
Parses libvirt xml and extracts volume chain from it.
Arguments:
disk_xml (ElementTree): libvirt xml to parse
Returns:
list: VolumeChainEntry[] - List of chain entries where
each entry contains volume UUID, volume path
and volume index. For the 'top' volume index
is None, as 'top' volume have no indices at
all.
VolumeChainEntry is reversed in relation to
libvirt xml: xml is ordered from top to base
volume, while volume chain is ordered from
base to the top.
Raises:
InvalidBackingStoreIndex exception when index value is not int.
"""
volChain = []
index = None
source_attr = SOURCE_ATTR[self.diskType]
while True:
path = vmxml.find_attr(disk_xml, 'source', source_attr)
if not path:
break
if index is not None:
try:
index = int(index)
except ValueError:
raise InvalidBackingStoreIndex(path, index)
# TODO: Allocation information is not available in the XML. Switch
# to the new interface once it becomes available in libvirt.
alloc = None
backingstore = next(vmxml.children(disk_xml, 'backingStore'), None)
if backingstore is None:
self.log.warning(
"<backingStore/> missing from backing "
"chain for drive %s", self.name)
break
entry = VolumeChainEntry(self.volume_id(path), path, alloc, index)
volChain.insert(0, entry)
disk_xml = backingstore
index = vmxml.attr(backingstore, 'index')
return volChain or None
def from_xml_tree(cls, log, dev, meta):
params = {
'device': dev.tag,
'type': find_device_type(dev),
}
update_device_params(params, dev)
specParams = parse_device_attrs(dev, ('model', ))
backend = vmxml.find_first(dev, 'backend')
specParams['mode'] = vmxml.attr(backend, 'type')
specParams['path'] = vmxml.find_attr(dev, 'device', 'path')
params['specParams'] = specParams
update_device_params_from_meta(params, meta)
return cls(log, **params)
def from_xml_tree(cls, log, dev, meta):
params = {
'device': find_device_type(dev),
'type': dev.tag,
}
update_device_params_from_meta(params, meta)
update_device_params(
params, dev, attrs=('index', 'model', 'ports')
)
iothread = vmxml.find_attr(dev, 'driver', 'iothread')
if iothread:
params['specParams'] = {'ioThreadId': iothread}
return cls(log, **params)
def parse_volume_chain(self, disk_xml):
"""
Parses libvirt xml and extracts volume chain from it.
Arguments:
disk_xml (ElementTree): libvirt xml to parse
Returns:
list: VolumeChainEntry[] - List of chain entries where
each entry contains volume UUID, volume path
and volume index. For the 'top' volume index
is None, as 'top' volume have no indices at
all.
VolumeChainEntry is reversed in relation to
libvirt xml: xml is ordered from top to base
volume, while volume chain is ordered from
base to the top.
Raises:
InvalidBackingStoreIndex exception when index value is not int.
"""
volChain = []
index = None
source_attr = SOURCE_ATTR[self.diskType]
while True:
path = vmxml.find_attr(disk_xml, 'source', source_attr)
if not path:
break
if index is not None:
try:
index = int(index)
except ValueError:
raise InvalidBackingStoreIndex(path, index)
# TODO: Allocation information is not available in the XML. Switch
# to the new interface once it becomes available in libvirt.
alloc = None
backingstore = next(vmxml.children(disk_xml, 'backingStore'), None)
if backingstore is None:
self.log.warning("<backingStore/> missing from backing "
"chain for drive %s", self.name)
break
entry = VolumeChainEntry(self.volume_id(path), path, alloc, index)
volChain.insert(0, entry)
disk_xml = backingstore
index = vmxml.attr(backingstore, 'index')
return volChain or None
def from_xml_tree(cls, log, dev, meta):
params = {
'device': dev.tag,
'type': find_device_type(dev),
}
update_device_params(params, dev)
specParams = parse_device_attrs(dev, ('model',))
backend = vmxml.find_first(dev, 'backend')
specParams['mode'] = vmxml.attr(backend, 'type')
specParams['path'] = vmxml.find_attr(
dev, 'device', 'path')
params['specParams'] = specParams
update_device_params_from_meta(params, meta)
return cls(log, **params)
def update_from_xml(cls, vm, device_conf, device_xml):
alias = core.find_device_alias(device_xml)
bus_address = vmxml.device_address(device_xml)
source = vmxml.find_first(device_xml, 'source')
adapter = vmxml.find_attr(source, 'adapter', 'name')
# The routine is quite unusual because we cannot directly
# reconstruct the unique name. Therefore, we first look up
# corresponding device object address,
for dev in device_conf:
if (hasattr(dev, 'bus_address') and
bus_address == dev.bus_address and adapter == dev.adapter):
dev.alias = alias
device = dev.device
dev.address = vmxml.device_address(device_xml, 1)
for dev in vm.conf['devices']:
if dev['device'] == device:
dev['alias'] = alias
dev['address'] = vmxml.device_address(device_xml, 1)
def update_from_xml(cls, vm, device_conf, device_xml):
alias = core.find_device_alias(device_xml)
bus_address = vmxml.device_address(device_xml)
source = vmxml.find_first(device_xml, 'source')
adapter = vmxml.find_attr(source, 'adapter', 'name')
# The routine is quite unusual because we cannot directly
# reconstruct the unique name. Therefore, we first look up
# corresponding device object address,
for dev in device_conf:
if (hasattr(dev, 'bus_address') and bus_address == dev.bus_address
and adapter == dev.adapter):
dev.alias = alias
device = dev.device
dev.address = vmxml.device_address(device_xml, 1)
for dev in vm.conf['devices']:
if dev['device'] == device:
dev['alias'] = alias
dev['address'] = vmxml.device_address(device_xml, 1)
def from_xml_tree(cls, log, dev, meta):
params = {
'custom': {},
'vm_custom': {},
'specParams': {},
}
params.update(core.parse_device_params(dev))
params['device'] = params['type']
params.update(_get_xml_elem(dev, 'macAddr', 'mac', 'address'))
params.update(_get_xml_elem(dev, 'nicModel', 'model', 'type'))
params.update(_get_xml_elem(dev, 'bootOrder', 'boot', 'order'))
filterref = vmxml.find_first(dev, 'filterref', None)
if filterref is not None:
params['filter'] = vmxml.attr(filterref, 'filter')
params['filterParameters'] = {
param.attrib['name']: param.attrib['value']
for param in vmxml.find_all(filterref, 'parameter')
}
driver = vmxml.find_first(dev, 'driver', None)
if driver is not None:
params['custom'].update(
core.parse_device_attrs(driver, ('queues', )))
sndbuf = dev.find('./tune/sndbuf')
if sndbuf is not None:
params['vm_custom']['sndbuf'] = vmxml.text(sndbuf)
bandwidth = vmxml.find_first(dev, 'bandwidth', None)
if bandwidth is not None:
for mode in ('inbound', 'outbound'):
elem = vmxml.find_first(bandwidth, mode, None)
if elem is not None:
params['specParams'][mode] = elem.attrib.copy()
net = (meta.get('network', None)
or vmxml.find_attr(dev, 'source', 'bridge'))
if net is None:
raise RuntimeError('could not detect the network to join')
params['network'] = net
return cls(log, **params)
def get_xml_elem(dev, key, elem, attr):
value = vmxml.find_attr(dev, elem, attr)
return {key: value} if value else {}
def find_device_alias(dev):
return vmxml.find_attr(dev, 'alias', 'name')
def _is_feature_flag_enabled(dev, node, attr):
value = vmxml.find_attr(dev, node, attr)
if value is not None and value.lower() == 'no':
return False
else:
return True
def _update_boot_params(params, dev):
boot_order = vmxml.find_attr(dev, 'boot', 'order')
if boot_order:
params['bootOrder'] = boot_order
def test_find_attr(self, tag, attribute, result):
value = vmxml.find_attr(self._dom, tag, attribute)
self.assertEqual(value, result)
def get_xml_elem(dev, key, elem, attr):
value = vmxml.find_attr(dev, elem, attr)
return {key: value} if value else {}
def find_device_alias(dev):
return vmxml.find_attr(dev, 'alias', 'name')
def _update_boot_params(params, dev):
boot_order = vmxml.find_attr(dev, 'boot', 'order')
if boot_order:
params['bootOrder'] = boot_order
def test_find_attr(self, tag, attribute, result):
value = vmxml.find_attr(self._dom, tag, attribute)
self.assertEqual(value, result)
def test_find_attr(self, tag, attribute, result):
value = vmxml.find_attr(self._dom, tag, attribute)
assert value == result
def _normalize_scsi_address(dev, addr):
adapter = vmxml.find_attr(dev, 'adapter', 'name')
addr['host'] = adapter.replace('scsi_host', '')
addr['lun'] = addr.pop('unit')
return addr
def update_device_info(cls, vm, device_conf):
# FIXME! We need to gather as much info as possible from the libvirt.
# In the future we can return this real data to management instead of
# vm's conf
for x in vm.domain.get_device_elements('disk'):
alias, devPath, name = _get_drive_identification(x)
readonly = vmxml.find_first(x, 'readonly', None) is not None
bootOrder = vmxml.find_attr(x, 'boot', 'order')
devType = vmxml.attr(x, 'device')
if devType == 'disk':
# raw/qcow2
drv = vmxml.find_attr(x, 'driver', 'type')
else:
drv = 'raw'
# Get disk address
address = vmxml.device_address(x)
# Keep data as dict for easier debugging
deviceDict = {
'path': devPath,
'name': name,
'readonly': readonly,
'bootOrder': bootOrder,
'address': address,
'type': devType
}
# display indexed pairs of ordered values from 2 dicts
# such as {key_1: (valueA_1, valueB_1), ...}
def mergeDicts(deviceDef, dev):
return dict((k, (deviceDef[k], getattr(dev, k, None)))
for k in deviceDef.iterkeys())
vm.log.debug('Looking for drive with attributes %s', deviceDict)
for d in device_conf:
# When we analyze a disk device that was already discovered in
# the past (generally as soon as the VM is created) we should
# verify that the cached path is the one used in libvirt.
# We already hit few times the problem that after a live
# migration the paths were not in sync anymore (BZ#1059482).
if (hasattr(d, 'alias') and d.alias == alias
and d.path != devPath):
vm.log.warning('updating drive %s path from %s to %s',
d.alias, d.path, devPath)
d.path = devPath
if d.path == devPath:
d.name = name
d.type = devType
d.drv = drv
d.alias = alias
d.address = address
d.readonly = readonly
if bootOrder:
d.bootOrder = bootOrder
vm.log.debug('Matched %s', mergeDicts(deviceDict, d))
# Update vm's conf with address for known disk devices
knownDev = False
for dev in vm.conf['devices']:
# See comment in previous loop. This part is used to update
# the vm configuration as well.
if ('alias' in dev and dev['alias'] == alias
and dev['path'] != devPath):
vm.log.warning(
'updating drive %s config path from %s '
'to %s', dev['alias'], dev['path'], devPath)
dev['path'] = devPath
if (dev['type'] == hwclass.DISK and dev['path'] == devPath):
dev['name'] = name
dev['address'] = address
dev['alias'] = alias
dev['readonly'] = str(readonly)
if bootOrder:
dev['bootOrder'] = bootOrder
vm.log.debug('Matched %s', mergeDicts(deviceDict, dev))
knownDev = True
# Add unknown disk device to vm's conf
if not knownDev:
archIface = DEFAULT_INTERFACE_FOR_ARCH[vm.arch]
iface = archIface if address['type'] == 'drive' else 'pci'
diskDev = {
'type': hwclass.DISK,
'device': devType,
'iface': iface,
'path': devPath,
'name': name,
'address': address,
'alias': alias,
'readonly': str(readonly)
}
if bootOrder:
diskDev['bootOrder'] = bootOrder
vm.log.warn('Found unknown drive: %s', diskDev)
vm.conf['devices'].append(diskDev)
def update_device_info(cls, vm, device_conf):
for x in vm.domain.get_device_elements('interface'):
devType = vmxml.attr(x, 'type')
mac = vmxml.find_attr(x, 'mac', 'address')
alias = core.find_device_alias(x)
xdrivers = vmxml.find_first(x, 'driver', None)
if xdrivers is not None:
driver = core.parse_device_attrs(
xdrivers, ('name', 'queues',)
)
else:
driver = {}
if devType == 'hostdev':
name = alias
model = 'passthrough'
else:
name = vmxml.find_attr(x, 'target', 'dev')
model = vmxml.find_attr(x, 'model', 'type')
if model == 'virtio':
# Reverse action of the conversion in __init__.
model = 'pv'
network = None
try:
if vmxml.find_attr(x, 'link', 'state') == 'down':
linkActive = False
else:
linkActive = True
except IndexError:
linkActive = True
source = vmxml.find_first(x, 'source', None)
if source is not None:
network = vmxml.attr(source, 'bridge')
if not network:
network = libvirtnetwork.netname_l2o(
vmxml.attr(source, 'network'))
address = core.find_device_guest_address(x)
for nic in device_conf:
if nic.macAddr.lower() == mac.lower():
nic.name = name
nic.alias = alias
nic.address = address
nic.linkActive = linkActive
if driver:
# If a driver was reported, pass it back to libvirt.
# Engine (vm's conf) is not interested in this value.
nic.driver.update(driver)
# Update vm's conf with address for known nic devices
knownDev = False
for dev in vm.conf['devices']:
if (dev['type'] == hwclass.NIC and
dev['macAddr'].lower() == mac.lower()):
dev['address'] = address
dev['alias'] = alias
dev['name'] = name
dev['linkActive'] = linkActive
knownDev = True
# Add unknown nic device to vm's conf
if not knownDev:
nicDev = {'type': hwclass.NIC,
'device': devType,
'macAddr': mac,
'nicModel': model,
'address': address,
'alias': alias,
'name': name,
'linkActive': linkActive}
if network:
nicDev['network'] = network
vm.conf['devices'].append(nicDev)
def update_device_info(cls, vm, device_conf):
# FIXME! We need to gather as much info as possible from the libvirt.
# In the future we can return this real data to management instead of
# vm's conf
for x in vm.domain.get_device_elements('disk'):
alias, devPath, name = _get_drive_identification(x)
readonly = vmxml.find_first(x, 'readonly', None) is not None
bootOrder = vmxml.find_attr(x, 'boot', 'order')
devType = vmxml.attr(x, 'device')
if devType == 'disk':
# raw/qcow2
drv = vmxml.find_attr(x, 'driver', 'type')
else:
drv = 'raw'
# Get disk address
address = vmxml.device_address(x)
# Keep data as dict for easier debugging
deviceDict = {'path': devPath, 'name': name,
'readonly': readonly, 'bootOrder': bootOrder,
'address': address, 'type': devType}
# display indexed pairs of ordered values from 2 dicts
# such as {key_1: (valueA_1, valueB_1), ...}
def mergeDicts(deviceDef, dev):
return dict((k, (deviceDef[k], getattr(dev, k, None)))
for k in deviceDef.iterkeys())
vm.log.debug('Looking for drive with attributes %s', deviceDict)
for d in device_conf:
# When we analyze a disk device that was already discovered in
# the past (generally as soon as the VM is created) we should
# verify that the cached path is the one used in libvirt.
# We already hit few times the problem that after a live
# migration the paths were not in sync anymore (BZ#1059482).
if (hasattr(d, 'alias') and d.alias == alias and
d.path != devPath):
vm.log.warning('updating drive %s path from %s to %s',
d.alias, d.path, devPath)
d.path = devPath
if d.path == devPath:
d.name = name
d.type = devType
d.drv = drv
d.alias = alias
d.address = address
d.readonly = readonly
if bootOrder:
d.bootOrder = bootOrder
vm.log.debug('Matched %s', mergeDicts(deviceDict, d))
# Update vm's conf with address for known disk devices
knownDev = False
for dev in vm.conf['devices']:
# See comment in previous loop. This part is used to update
# the vm configuration as well.
if ('alias' in dev and dev['alias'] == alias and
dev['path'] != devPath):
vm.log.warning('updating drive %s config path from %s '
'to %s', dev['alias'], dev['path'],
devPath)
dev['path'] = devPath
if (dev['type'] == hwclass.DISK and
dev['path'] == devPath):
dev['name'] = name
dev['address'] = address
dev['alias'] = alias
dev['readonly'] = str(readonly)
if bootOrder:
dev['bootOrder'] = bootOrder
vm.log.debug('Matched %s', mergeDicts(deviceDict, dev))
knownDev = True
# Add unknown disk device to vm's conf
if not knownDev:
archIface = DEFAULT_INTERFACE_FOR_ARCH[vm.arch]
iface = archIface if address['type'] == 'drive' else 'pci'
diskDev = {'type': hwclass.DISK, 'device': devType,
'iface': iface, 'path': devPath, 'name': name,
'address': address, 'alias': alias,
'readonly': str(readonly)}
if bootOrder:
diskDev['bootOrder'] = bootOrder
vm.log.warn('Found unknown drive: %s', diskDev)
vm.conf['devices'].append(diskDev)
def _normalize_scsi_address(dev, addr):
adapter = vmxml.find_attr(dev, 'adapter', 'name')
addr['host'] = adapter.replace('scsi_host', '')
addr['lun'] = addr.pop('unit')
return addr
def _is_feature_flag_enabled(dev, node, attr):
value = vmxml.find_attr(dev, node, attr)
if value is not None and value.lower() == 'no':
return False
else:
return True
