def get_list(self, pool_name):
pool = StoragePoolModel.get_storagepool(pool_name, self.conn)
if not pool.isActive():
raise InvalidOperation("KCHVOL0006E", {'pool': pool_name})
try:
pool.refresh(0)
return sorted(map(lambda x: x.decode('utf-8'), pool.listVolumes()))
except libvirt.libvirtError as e:
raise OperationFailed("KCHVOL0008E",
{'pool': pool_name,
'err': e.get_error_message()})
def get_storagevolume(poolname, name, conn):
pool = StoragePoolModel.get_storagepool(poolname, conn)
if not pool.isActive():
raise InvalidOperation("KCHVOL0006E", {'name': pool})
try:
return pool.storageVolLookupByName(name.encode("utf-8"))
except libvirt.libvirtError as e:
if e.get_error_code() == libvirt.VIR_ERR_NO_STORAGE_VOL:
raise NotFoundError("KCHVOL0002E", {'name': name,
'pool': poolname})
else:
raise
def _clone_task(self, cb, params):
"""Asynchronous function which performs the clone operation.
This function copies all the data inside the original volume into the
new one.
Arguments:
cb -- A callback function to signal the Task's progress.
params -- A dict with the following values:
"pool": The name of the original pool.
"name": The name of the original volume.
"new_pool": The name of the destination pool.
"new_name": The name of the new volume.
"""
orig_pool_name = params['pool']
orig_vol_name = params['name']
new_pool_name = params['new_pool']
new_vol_name = params['new_name']
try:
cb('setting up volume cloning')
orig_vir_vol = StorageVolumeModel.get_storagevolume(orig_pool_name,
orig_vol_name,
self.conn)
orig_vol = self.lookup(orig_pool_name, orig_vol_name)
new_vir_pool = StoragePoolModel.get_storagepool(new_pool_name,
self.conn)
cb('building volume XML')
root_elem = E.volume()
root_elem.append(E.name(new_vol_name))
root_elem.append(E.capacity(unicode(orig_vol['capacity']),
unit='bytes'))
target_elem = E.target()
target_elem.append(E.format(type=orig_vol['format']))
root_elem.append(target_elem)
new_vol_xml = ET.tostring(root_elem, encoding='utf-8',
pretty_print=True)
cb('cloning volume')
new_vir_pool.createXMLFrom(new_vol_xml, orig_vir_vol, 0)
except (InvalidOperation, NotFoundError, libvirt.libvirtError), e:
raise OperationFailed('KCHVOL0023E',
{'name': orig_vol_name,
'pool': orig_pool_name,
'err': e.get_error_message()})
def get_list(self):
iso_volumes = []
conn = self.conn.get()
pools = conn.listStoragePools()
pools += conn.listDefinedStoragePools()
for pool_name in pools:
try:
pool = StoragePoolModel.get_storagepool(pool_name, self.conn)
pool.refresh(0)
volumes = pool.listVolumes()
except Exception, e:
# Skip inactive pools
wok_log.debug("Shallow scan: skipping pool %s because of "
"error: %s", (pool_name, e.message))
continue
for volume in volumes:
res = self.storagevolume.lookup(pool_name,
volume.decode("utf-8"))
if res['format'] == 'iso' and res['bootable']:
res['name'] = '%s' % volume
iso_volumes.append(res)
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})
def _create_volume_with_url(self, cb, params):
pool_name = params['pool']
name = params['name']
url = params['url']
pool_model = StoragePoolModel(conn=self.conn,
objstore=self.objstore)
pool = pool_model.lookup(pool_name)
if pool['type'] in ['dir', 'netfs']:
file_path = os.path.join(pool['path'], name)
else:
file_path = tempfile.mkstemp(prefix=name)[1]
with contextlib.closing(urllib2.urlopen(url)) as response:
with open(file_path, 'w') as volume_file:
remote_size = response.info().getheader('Content-Length', '-')
downloaded_size = 0
try:
while True:
chunk_data = response.read(READ_CHUNK_SIZE)
if not chunk_data:
break
volume_file.write(chunk_data)
downloaded_size += len(chunk_data)
cb('%s/%s' % (downloaded_size, remote_size))
except (IOError, libvirt.libvirtError) as e:
if os.path.isfile(file_path):
os.remove(file_path)
raise OperationFailed('KCHVOL0007E', {'name': name,
'pool': pool_name,
'err': e.message})
if pool['type'] in ['dir', 'netfs']:
virt_pool = StoragePoolModel.get_storagepool(pool_name, self.conn)
virt_pool.refresh(0)
else:
def _stream_handler(stream, nbytes, fd):
return fd.read(nbytes)
virt_stream = virt_vol = None
try:
task = self.create(pool_name, {'name': name,
'format': 'raw',
'capacity': downloaded_size,
'allocation': downloaded_size})
self.task.wait(task['id'])
virt_vol = StorageVolumeModel.get_storagevolume(pool_name,
name,
self.conn)
virt_stream = self.conn.get().newStream(0)
virt_vol.upload(virt_stream, 0, downloaded_size, 0)
with open(file_path) as fd:
virt_stream.sendAll(_stream_handler, fd)
virt_stream.finish()
except (IOError, libvirt.libvirtError) as e:
try:
if virt_stream:
virt_stream.abort()
if virt_vol:
virt_vol.delete(0)
except libvirt.libvirtError, virt_e:
wok_log.error(virt_e.message)
finally:
raise OperationFailed('KCHVOL0007E', {'name': name,
'pool': pool_name,
'err': e.message})
finally: