def _generate_thumbnail(self):
thumbnail = os.path.join(config.get_screenshot_path(), '%s-%s.png' %
(self.vm_uuid, str(uuid.uuid4())))
self._get_test_result()
if stream_test_result is None:
self._watch_stream_creation(thumbnail)
elif stream_test_result:
try:
self._generate_scratch(thumbnail)
except:
kimchi_log.error("screenshot_creation: Unable to create "
"screenshot image %s." % thumbnail)
else:
self._create_black_image(thumbnail)
if os.path.getsize(thumbnail) == 0:
self._create_black_image(thumbnail)
else:
im = Image.open(thumbnail)
try:
# Prevent Image lib from lazy load,
# work around pic truncate validation in thumbnail generation
im.thumbnail(self.THUMBNAIL_SIZE)
except Exception as e:
kimchi_log.warning("Image load with warning: %s." % e)
im.save(thumbnail, "PNG")
self.info['thumbnail'] = thumbnail
def parse_hdds(temperature_unit):
# hddtemp will strangely convert a non-number (see error case
# below) to 32 deg F. So just always ask for C and convert later.
out, error, rc = run_command(['hddtemp'])
if rc:
kimchi_log.error("Error retrieving HD temperatures: rc %s."
"output: %s" % (rc, error))
return None
hdds = OrderedDict()
for hdd in out.splitlines():
hdd_name = ''
hdd_temp = 0.0
try:
hdd_items = hdd.split(':')
hdd_name, hdd_temp = hdd_items[0], hdd_items[2]
hdd_temp = re.sub('°[C|F]', '', hdd_temp).strip()
except Exception as e:
kimchi_log.error('Sensors hdd parse error: %s' % e.message)
continue
try:
# Try to convert the number to a float. If it fails,
# don't add this disk to the list.
hdd_temp = float(hdd_temp)
if(temperature_unit == 'F'):
hdd_temp = 9.0/5.0 * hdd_temp + 32
hdds[hdd_name] = hdd_temp
except ValueError:
# If no sensor data, parse float will fail. For example:
# "/dev/sda: IBM IPR-10 5D831200: S.M.A.R.T. not available"
kimchi_log.warning("Sensors hdd: %s" % hdd)
hdds['unit'] = temperature_unit
return hdds
def _generate_thumbnail(self):
thumbnail = os.path.join(
config.get_screenshot_path(),
'%s-%s.png' % (self.vm_uuid, str(uuid.uuid4())))
self._get_test_result()
if stream_test_result is None:
self._watch_stream_creation(thumbnail)
elif stream_test_result:
try:
self._generate_scratch(thumbnail)
except:
kimchi_log.error("screenshot_creation: Unable to create "
"screenshot image %s." % thumbnail)
else:
self._create_black_image(thumbnail)
if os.path.getsize(thumbnail) == 0:
self._create_black_image(thumbnail)
else:
im = Image.open(thumbnail)
try:
# Prevent Image lib from lazy load,
# work around pic truncate validation in thumbnail generation
im.thumbnail(self.THUMBNAIL_SIZE)
except Exception as e:
kimchi_log.warning("Image load with warning: %s." % e)
im.save(thumbnail, "PNG")
self.info['thumbnail'] = thumbnail
def parse_hdds(temperature_unit):
# hddtemp will strangely convert a non-number (see error case
# below) to 32 deg F. So just always ask for C and convert later.
out, error, rc = run_command(['hddtemp'])
if rc:
kimchi_log.error("Error retrieving HD temperatures: rc %s."
"output: %s" % (rc, error))
return None
hdds = OrderedDict()
for hdd in out.splitlines():
hdd_name = ''
hdd_temp = 0.0
try:
hdd_items = hdd.split(':')
hdd_name, hdd_temp = hdd_items[0], hdd_items[2]
hdd_temp = re.sub('°[C|F]', '', hdd_temp).strip()
except Exception as e:
kimchi_log.error('Sensors hdd parse error: %s' % e.message)
continue
try:
# Try to convert the number to a float. If it fails,
# don't add this disk to the list.
hdd_temp = float(hdd_temp)
if (temperature_unit == 'F'):
hdd_temp = 9.0 / 5.0 * hdd_temp + 32
hdds[hdd_name] = hdd_temp
except ValueError:
# If no sensor data, parse float will fail. For example:
# "/dev/sda: IBM IPR-10 5D831200: S.M.A.R.T. not available"
kimchi_log.warning("Sensors hdd: %s" % hdd)
hdds['unit'] = temperature_unit
return hdds
def get_list(self, storage_server, _target_type=None):
target_list = list()
if not _target_type:
target_types = STORAGE_SOURCES.keys()
else:
target_types = [_target_type]
for target_type in target_types:
if not self.caps.nfs_target_probe and target_type == 'netfs':
targets = patch_find_nfs_target(storage_server)
else:
xml = self._get_storage_server_spec(server=storage_server,
target_type=target_type)
conn = self.conn.get()
try:
ret = conn.findStoragePoolSources(target_type, xml, 0)
except libvirt.libvirtError as e:
err = "Query storage pool source fails because of %s"
kimchi_log.warning(err, e.get_error_message())
continue
targets = self._parse_target_source_result(target_type, ret)
target_list.extend(targets)
return target_list
def get_list(self, storage_server, _target_type=None):
target_list = list()
if not _target_type:
target_types = STORAGE_SOURCES.keys()
else:
target_types = [_target_type]
for target_type in target_types:
if not self.caps.nfs_target_probe and target_type == 'netfs':
targets = patch_find_nfs_target(storage_server)
else:
xml = self._get_storage_server_spec(server=storage_server,
target_type=target_type)
conn = self.conn.get()
try:
ret = conn.findStoragePoolSources(target_type, xml, 0)
except libvirt.libvirtError as e:
err = "Query storage pool source fails because of %s"
kimchi_log.warning(err, e.get_error_message())
continue
targets = self._parse_target_source_result(target_type, ret)
target_list.extend(targets)
return target_list
def get_list(self, storage_server, _target_type=None, _server_port=None):
target_list = list()
if not _target_type:
target_types = STORAGE_SERVERS
else:
target_types = [_target_type]
for target_type in target_types:
if not self.caps.nfs_target_probe and target_type == 'netfs':
targets = patch_find_nfs_target(storage_server)
else:
xml = self._get_storage_server_spec(server=storage_server,
target_type=target_type,
server_port=_server_port)
conn = self.conn.get()
try:
ret = conn.findStoragePoolSources(target_type, xml, 0)
except libvirt.libvirtError as e:
err = "Query storage pool source fails because of %s"
kimchi_log.warning(err, e.get_error_message())
continue
targets = self._parse_target_source_result(target_type, ret)
target_list.extend(targets)
# Get all netfs and iscsi paths in use
used_paths = []
try:
conn = self.conn.get()
# Get all existing ISCSI and NFS pools
pools = conn.listAllStoragePools(
libvirt.VIR_CONNECT_LIST_STORAGE_POOLS_ISCSI |
libvirt.VIR_CONNECT_LIST_STORAGE_POOLS_NETFS)
for pool in pools:
pool_xml = pool.XMLDesc(0)
root = objectify.fromstring(pool_xml)
if root.get('type') == 'netfs' and \
root.source.dir is not None:
used_paths.append(root.source.dir.get('path'))
elif root.get('type') == 'iscsi' and \
root.source.device is not None:
used_paths.append(root.source.device.get('path'))
except libvirt.libvirtError as e:
err = "Query storage pool source fails because of %s"
kimchi_log.warning(err, e.get_error_message())
# Filter target_list to not not show the used paths
target_list = [elem for elem in target_list
if elem.get('target') not in used_paths]
return target_list
def get_list(self, storage_server, _target_type=None, _server_port=None):
target_list = list()
if not _target_type:
target_types = STORAGE_SERVERS
else:
target_types = [_target_type]
for target_type in target_types:
if not self.caps.nfs_target_probe and target_type == 'netfs':
targets = patch_find_nfs_target(storage_server)
else:
xml = self._get_storage_server_spec(server=storage_server,
target_type=target_type,
server_port=_server_port)
conn = self.conn.get()
try:
ret = conn.findStoragePoolSources(target_type, xml, 0)
except libvirt.libvirtError as e:
err = "Query storage pool source fails because of %s"
kimchi_log.warning(err, e.get_error_message())
continue
targets = self._parse_target_source_result(target_type, ret)
target_list.extend(targets)
# Get all netfs and iscsi paths in use
used_paths = []
try:
conn = self.conn.get()
# Get all existing ISCSI and NFS pools
pools = conn.listAllStoragePools(
libvirt.VIR_CONNECT_LIST_STORAGE_POOLS_ISCSI |
libvirt.VIR_CONNECT_LIST_STORAGE_POOLS_NETFS)
for pool in pools:
pool_xml = pool.XMLDesc(0)
root = objectify.fromstring(pool_xml)
if root.get('type') == 'netfs' and \
root.source.dir is not None:
used_paths.append(root.source.dir.get('path'))
elif root.get('type') == 'iscsi' and \
root.source.device is not None:
used_paths.append(root.source.device.get('path'))
except libvirt.libvirtError as e:
err = "Query storage pool source fails because of %s"
kimchi_log.warning(err, e.get_error_message())
# Filter target_list to not not show the used paths
target_list = [elem for elem in target_list
if elem.get('target') not in used_paths]
return [dict(t) for t in set(tuple(t.items()) for t in target_list)]
def probe_img_info(path):
cmd = ["qemu-img", "info", "--output=json", path]
info = dict()
try:
out = run_command(cmd, 10)[0]
except TimeoutExpired:
kimchi_log.warning("Cannot decide format of base img %s", path)
return None
info = json.loads(out)
info['virtual-size'] = info['virtual-size'] >> 30
info['actual-size'] = info['actual-size'] >> 30
return info
def _validate_pci_passthrough_env():
# Linux kernel < 3.5 doesn't provide /sys/kernel/iommu_groups
if os.path.isdir('/sys/kernel/iommu_groups'):
if not glob.glob('/sys/kernel/iommu_groups/*'):
raise InvalidOperation("KCHVMHDEV0003E")
# Enable virt_use_sysfs on RHEL6 and older distributions
# In recent Fedora, there is no virt_use_sysfs.
out, err, rc = run_command(['getsebool', 'virt_use_sysfs'])
if rc == 0 and out.rstrip('\n') != "virt_use_sysfs --> on":
out, err, rc = run_command(['setsebool', '-P',
'virt_use_sysfs=on'])
if rc != 0:
kimchi_log.warning("Unable to turn on sebool virt_use_sysfs")
def _validate_pci_passthrough_env():
# Linux kernel < 3.5 doesn't provide /sys/kernel/iommu_groups
if os.path.isdir('/sys/kernel/iommu_groups'):
if not glob.glob('/sys/kernel/iommu_groups/*'):
raise InvalidOperation("KCHVMHDEV0003E")
# Enable virt_use_sysfs on RHEL6 and older distributions
# In recent Fedora, there is no virt_use_sysfs.
out, err, rc = run_command(['getsebool', 'virt_use_sysfs'])
if rc == 0 and out.rstrip('\n') != "virt_use_sysfs --> on":
out, err, rc = run_command(
['setsebool', '-P', 'virt_use_sysfs=on'])
if rc != 0:
kimchi_log.warning("Unable to turn on sebool virt_use_sysfs")
def _is_dev_extended_partition(devType, devNodePath):
if devType != 'part':
return False
diskPath = devNodePath.rstrip('0123456789')
device = PDevice(diskPath)
try:
extended_part = PDisk(device).getExtendedPartition()
except NotImplementedError as e:
kimchi_log.warning(
"Error getting extended partition info for dev %s type %s: %s",
devNodePath, devType, e.message)
# Treate disk with unsupported partiton table as if it does not
# contain extended partitions.
return False
if extended_part and extended_part.path == devNodePath:
return True
return False
def _is_dev_extended_partition(devType, devNodePath):
if devType != 'part':
return False
diskPath = devNodePath.rstrip('0123456789')
device = PDevice(diskPath)
try:
extended_part = PDisk(device).getExtendedPartition()
except NotImplementedError as e:
kimchi_log.warning(
"Error getting extended partition info for dev %s type %s: %s",
devNodePath, devType, e.message)
# Treate disk with unsupported partiton table as if it does not
# contain extended partitions.
return False
if extended_part and extended_part.path == devNodePath:
return True
return False
class StorageVolumesModel(object):
def __init__(self, **kargs):
self.conn = kargs['conn']
self.objstore = kargs['objstore']
def create(self, pool_name, params):
vol_xml = """
<volume>
<name>%(name)s</name>
<allocation unit="MiB">%(allocation)s</allocation>
<capacity unit="MiB">%(capacity)s</capacity>
<source>
</source>
<target>
<format type='%(format)s'/>
</target>
</volume>
"""
params.setdefault('allocation', 0)
params.setdefault('format', 'qcow2')
name = params['name']
vol_id = '%s:%s' % (pool_name, name)
try:
pool = StoragePoolModel.get_storagepool(pool_name, self.conn)
xml = vol_xml % params
except KeyError, item:
raise MissingParameter("KCHVOL0004E", {
'item': str(item),
'volume': name
})
pool_info = StoragePoolModel(conn=self.conn,
objstore=self.objstore).lookup(pool_name)
if pool_info['type'] in READONLY_POOL_TYPE:
raise InvalidParameter("KCHVOL0012E", {'type': pool_info['type']})
try:
pool.createXML(xml, 0)
except libvirt.libvirtError as e:
raise OperationFailed("KCHVOL0007E", {
'name': name,
'pool': pool,
'err': e.get_error_message()
})
try:
with self.objstore as session:
session.store('storagevolume', vol_id, {'ref_cnt': 0})
except Exception as e:
# If the storage volume was created flawlessly, then lets hide this
# error to avoid more error in the VM creation process
kimchi_log.warning(
'Unable to store storage volume id in '
'objectstore due error: %s', e.message)
return name
def kernel_support_vfio():
out, err, rc = run_command(['modprobe', 'vfio-pci'])
if rc != 0:
kimchi_log.warning("Unable to load Kernal module vfio-pci.")
return False
return True
class StorageVolumesModel(object):
def __init__(self, **kargs):
self.conn = kargs['conn']
self.objstore = kargs['objstore']
self.task = TaskModel(**kargs)
def create(self, pool_name, params):
vol_source = ['file', 'url', 'capacity']
name = params.get('name')
index_list = list(i for i in range(len(vol_source))
if vol_source[i] in params)
if len(index_list) != 1:
raise InvalidParameter("KCHVOL0018E",
{'param': ",".join(vol_source)})
create_param = vol_source[index_list[0]]
# Verify if the URL is valid
if create_param == 'url':
url = params['url']
try:
urllib2.urlopen(url).close()
except:
raise InvalidParameter('KCHVOL0022E', {'url': url})
all_vol_names = self.get_list(pool_name)
if name is None:
# the methods listed in 'REQUIRE_NAME_PARAMS' cannot have
# 'name' == None
if create_param in REQUIRE_NAME_PARAMS:
raise InvalidParameter('KCHVOL0016E')
# if 'name' is omitted - except for the methods listed in
# 'REQUIRE_NAME_PARAMS' - the default volume name will be the
# file/URL basename.
if create_param == 'file':
name = os.path.basename(params['file'].filename)
elif create_param == 'url':
name = os.path.basename(params['url'])
else:
name = 'upload-%s' % int(time.time())
name = get_unique_file_name(all_vol_names, name)
params['name'] = name
try:
create_func = getattr(self,
'_create_volume_with_%s' % create_param)
except AttributeError:
raise InvalidParameter("KCHVOL0019E", {'param': create_param})
pool_info = StoragePoolModel(conn=self.conn,
objstore=self.objstore).lookup(pool_name)
if pool_info['type'] in READONLY_POOL_TYPE:
raise InvalidParameter("KCHVOL0012E", {'type': pool_info['type']})
if pool_info['state'] == 'inactive':
raise InvalidParameter('KCHVOL0003E', {
'pool': pool_name,
'volume': name
})
if name in all_vol_names:
raise InvalidParameter('KCHVOL0001E', {'name': name})
params['pool'] = pool_name
targeturi = '/storagepools/%s/storagevolumes/%s' % (pool_name, name)
taskid = add_task(targeturi, create_func, self.objstore, params)
return self.task.lookup(taskid)
def _create_volume_with_file(self, cb, params):
pool_name = params.pop('pool')
dir_path = StoragePoolModel(
conn=self.conn, objstore=self.objstore).lookup(pool_name)['path']
file_path = os.path.join(dir_path, params['name'])
if os.path.exists(file_path):
raise InvalidParameter('KCHVOL0001E', {'name': params['name']})
upload_file = params['file']
f_len = upload_file.fp.length
try:
size = 0
with open(file_path, 'wb') as f:
while True:
data = upload_file.file.read(READ_CHUNK_SIZE)
if not data:
break
size += len(data)
f.write(data)
cb('%s/%s' % (size, f_len))
except Exception as e:
raise OperationFailed('KCHVOL0007E', {
'name': params['name'],
'pool': pool_name,
'err': e.message
})
# Refresh to make sure volume can be found in following lookup
StoragePoolModel.get_storagepool(pool_name, self.conn).refresh(0)
cb('OK', True)
def _create_volume_with_capacity(self, cb, params):
pool_name = params.pop('pool')
vol_xml = """
<volume>
<name>%(name)s</name>
<allocation unit='bytes'>%(allocation)s</allocation>
<capacity unit='bytes'>%(capacity)s</capacity>
<source>
</source>
<target>
<format type='%(format)s'/>
</target>
</volume>
"""
params.setdefault('allocation', 0)
params.setdefault('format', 'qcow2')
name = params['name']
try:
pool = StoragePoolModel.get_storagepool(pool_name, self.conn)
xml = vol_xml % params
except KeyError, item:
raise MissingParameter("KCHVOL0004E", {
'item': str(item),
'volume': name
})
try:
pool.createXML(xml, 0)
except libvirt.libvirtError as e:
raise OperationFailed("KCHVOL0007E", {
'name': name,
'pool': pool,
'err': e.get_error_message()
})
path = StoragePoolModel(
conn=self.conn, objstore=self.objstore).lookup(pool_name)['path']
try:
with self.objstore as session:
session.store('storagevolume', path, {'ref_cnt': 0})
except Exception as e:
# If the storage volume was created flawlessly, then lets hide this
# error to avoid more error in the VM creation process
kimchi_log.warning(
'Unable to store storage volume id in '
'objectstore due error: %s', e.message)
cb('', True)
def _clone_update_disks(self, xml, rollback):
"""Clone disks from a virtual machine. The disks are copied as new
volumes and the new VM's XML is updated accordingly.
Arguments:
xml -- The XML descriptor of the original VM + new value for
"/domain/uuid".
rollback -- A rollback context so the new volumes can be removed if an
error occurs during the cloning operation.
Return:
The XML descriptor <xml> with the new disk paths instead of the
old ones.
"""
# the UUID will be used to create the disk paths
uuid = xpath_get_text(xml, XPATH_DOMAIN_UUID)[0]
all_paths = xpath_get_text(xml, XPATH_DOMAIN_DISK)
vir_conn = self.conn.get()
for i, path in enumerate(all_paths):
try:
vir_orig_vol = vir_conn.storageVolLookupByPath(path)
vir_pool = vir_orig_vol.storagePoolLookupByVolume()
orig_pool_name = vir_pool.name().decode('utf-8')
orig_vol_name = vir_orig_vol.name().decode('utf-8')
except libvirt.libvirtError, e:
domain_name = xpath_get_text(xml, XPATH_DOMAIN_NAME)[0]
raise OperationFailed('KCHVM0035E', {'name': domain_name,
'err': e.message})
orig_pool = self.storagepool.lookup(orig_pool_name)
orig_vol = self.storagevolume.lookup(orig_pool_name, orig_vol_name)
new_pool_name = orig_pool_name
new_pool = orig_pool
if orig_pool['type'] in ['dir', 'netfs', 'logical']:
# if a volume in a pool 'dir', 'netfs' or 'logical' cannot hold
# a new volume with the same size, the pool 'default' should
# be used
if orig_vol['capacity'] > orig_pool['available']:
kimchi_log.warning('storage pool \'%s\' doesn\'t have '
'enough free space to store image '
'\'%s\'; falling back to \'default\'',
orig_pool_name, path)
new_pool_name = u'default'
new_pool = self.storagepool.lookup(u'default')
# ...and if even the pool 'default' cannot hold a new
# volume, raise an exception
if orig_vol['capacity'] > new_pool['available']:
domain_name = xpath_get_text(xml, XPATH_DOMAIN_NAME)[0]
raise InvalidOperation('KCHVM0034E',
{'name': domain_name})
elif orig_pool['type'] in ['scsi', 'iscsi']:
# SCSI and iSCSI always fall back to the storage pool 'default'
kimchi_log.warning('cannot create new volume for clone in '
'storage pool \'%s\'; falling back to '
'\'default\'', orig_pool_name)
new_pool_name = u'default'
new_pool = self.storagepool.lookup(u'default')
# if the pool 'default' cannot hold a new volume, raise
# an exception
if orig_vol['capacity'] > new_pool['available']:
domain_name = xpath_get_text(xml, XPATH_DOMAIN_NAME)[0]
raise InvalidOperation('KCHVM0034E', {'name': domain_name})
else:
# unexpected storage pool type
raise InvalidOperation('KCHPOOL0014E',
{'type': orig_pool['type']})
# new volume name: <UUID>-<loop-index>.<original extension>
# e.g. 1234-5678-9012-3456-0.img
ext = os.path.splitext(path)[1]
new_vol_name = u'%s-%d%s' % (uuid, i, ext)
task = self.storagevolume.clone(orig_pool_name, orig_vol_name,
new_name=new_vol_name)
self.task.wait(task['id'], 3600) # 1 h
# get the new volume path and update the XML descriptor
new_vol = self.storagevolume.lookup(new_pool_name, new_vol_name)
xml = xml_item_update(xml, XPATH_DOMAIN_DISK_BY_FILE % path,
new_vol['path'], 'file')
# remove the new volume should an error occur later
rollback.prependDefer(self.storagevolume.delete, new_pool_name,
new_vol_name)
def kernel_support_vfio():
out, err, rc = run_command(['modprobe', 'vfio-pci'])
if rc != 0:
kimchi_log.warning("Unable to load Kernal module vfio-pci.")
return False
return True
def _clone_update_disks(self, xml, rollback):
"""Clone disks from a virtual machine. The disks are copied as new
volumes and the new VM's XML is updated accordingly.
Arguments:
xml -- The XML descriptor of the original VM + new value for
"/domain/uuid".
rollback -- A rollback context so the new volumes can be removed if an
error occurs during the cloning operation.
Return:
The XML descriptor <xml> with the new disk paths instead of the
old ones.
"""
# the UUID will be used to create the disk paths
uuid = xpath_get_text(xml, XPATH_DOMAIN_UUID)[0]
all_paths = xpath_get_text(xml, XPATH_DOMAIN_DISK)
vir_conn = self.conn.get()
for i, path in enumerate(all_paths):
try:
vir_orig_vol = vir_conn.storageVolLookupByPath(path)
vir_pool = vir_orig_vol.storagePoolLookupByVolume()
orig_pool_name = vir_pool.name().decode('utf-8')
orig_vol_name = vir_orig_vol.name().decode('utf-8')
except libvirt.libvirtError, e:
domain_name = xpath_get_text(xml, XPATH_DOMAIN_NAME)[0]
raise OperationFailed('KCHVM0035E', {'name': domain_name,
'err': e.message})
orig_pool = self.storagepool.lookup(orig_pool_name)
orig_vol = self.storagevolume.lookup(orig_pool_name, orig_vol_name)
new_pool_name = orig_pool_name
new_pool = orig_pool
if orig_pool['type'] in ['dir', 'netfs', 'logical']:
# if a volume in a pool 'dir', 'netfs' or 'logical' cannot hold
# a new volume with the same size, the pool 'default' should
# be used
if orig_vol['capacity'] > orig_pool['available']:
kimchi_log.warning('storage pool \'%s\' doesn\'t have '
'enough free space to store image '
'\'%s\'; falling back to \'default\'',
orig_pool_name, path)
new_pool_name = u'default'
new_pool = self.storagepool.lookup(u'default')
# ...and if even the pool 'default' cannot hold a new
# volume, raise an exception
if orig_vol['capacity'] > new_pool['available']:
domain_name = xpath_get_text(xml, XPATH_DOMAIN_NAME)[0]
raise InvalidOperation('KCHVM0034E',
{'name': domain_name})
elif orig_pool['type'] in ['scsi', 'iscsi']:
# SCSI and iSCSI always fall back to the storage pool 'default'
kimchi_log.warning('cannot create new volume for clone in '
'storage pool \'%s\'; falling back to '
'\'default\'', orig_pool_name)
new_pool_name = u'default'
new_pool = self.storagepool.lookup(u'default')
# if the pool 'default' cannot hold a new volume, raise
# an exception
if orig_vol['capacity'] > new_pool['available']:
domain_name = xpath_get_text(xml, XPATH_DOMAIN_NAME)[0]
raise InvalidOperation('KCHVM0034E', {'name': domain_name})
else:
# unexpected storage pool type
raise InvalidOperation('KCHPOOL0014E',
{'type': orig_pool['type']})
# new volume name: <UUID>-<loop-index>.<original extension>
# e.g. 1234-5678-9012-3456-0.img
ext = os.path.splitext(path)[1]
new_vol_name = u'%s-%d%s' % (uuid, i, ext)
task = self.storagevolume.clone(orig_pool_name, orig_vol_name,
new_name=new_vol_name)
self.task.wait(task['id'], 3600) # 1 h
# get the new volume path and update the XML descriptor
new_vol = self.storagevolume.lookup(new_pool_name, new_vol_name)
xml = xml_item_update(xml, XPATH_DOMAIN_DISK_BY_FILE % path,
new_vol['path'], 'file')
# remove the new volume should an error occur later
rollback.prependDefer(self.storagevolume.delete, new_pool_name,
new_vol_name)