def pool_list_from_sources(conn, name, pool_type, host=None):
"""
Return a list of StoragePool instances built from libvirt's pool
source enumeration (if supported).
@param conn: Libvirt connection
@param name: Name for the new pool
@param pool_type: Pool type string from I{Types}
@param host: Option host string to poll for sources
"""
if not support.check_conn_support(conn,
support.SUPPORT_CONN_FINDPOOLSOURCES):
return []
pool_class = StoragePool.get_pool_class(pool_type)
pool_inst = pool_class(conn=conn, name=name)
if host:
source_xml = "<source><host name='%s'/></source>" % host
else:
source_xml = "<source/>"
try:
xml = conn.findStoragePoolSources(pool_type, source_xml, 0)
except libvirt.libvirtError, e:
if support.is_error_nosupport(e):
return []
raise
def setup(self, conn=None):
"""
DEPRECATED: Please use setup_dev instead
"""
if not conn:
conn = self.conn
if not NodeDeviceParser.is_pci_detach_capable(conn):
return
try:
try:
# Do this as a sanity check, so that we don't fail at domain
# start time. This is independent of the 'managed' state, since
# this should work regardless.
node = conn.nodeDeviceLookupByName(self._nodedev.name)
node.dettach()
node.reset()
except libvirt.libvirtError, e:
if not support.is_error_nosupport(e):
raise
except Exception, e:
raise RuntimeError(_("Could not detach PCI device: %s" % str(e)))
def setup(self, conn = None):
"""
DEPRECATED: Please use setup_dev instead
"""
if not conn:
conn = self.conn
if not NodeDeviceParser.is_pci_detach_capable(conn):
return
try:
try:
# Do this as a sanity check, so that we don't fail at domain
# start time. This is independent of the 'managed' state, since
# this should work regardless.
node = conn.nodeDeviceLookupByName(self._nodedev.name)
node.dettach()
node.reset()
except libvirt.libvirtError, e:
if not support.is_error_nosupport(e):
raise
except Exception, e:
raise RuntimeError(_("Could not detach PCI device: %s" % str(e)))
def install(self, meter=None):
"""
Build and install storage volume from xml
"""
xml = self.get_xml_config()
logging.debug("Creating storage volume '%s' with xml:\n%s",
self.name, xml)
t = threading.Thread(target=self._progress_thread,
name="Checking storage allocation",
args=(meter,))
t.setDaemon(True)
if not meter:
meter = urlgrabber.progress.BaseMeter()
try:
self._install_finished = False
t.start()
meter.start(size=self.capacity,
text=_("Allocating '%s'") % self.name)
if self.input_vol:
vol = self.pool.createXMLFrom(xml, self.input_vol, 0)
else:
vol = self.pool.createXML(xml, 0)
meter.end(self.capacity)
logging.debug("Storage volume '%s' install complete.",
self.name)
return vol
except libvirt.libvirtError, e:
if support.is_error_nosupport(e):
raise RuntimeError("Libvirt version does not support "
"storage cloning.")
raise
