def clone(self, dstPath, volFormat):
"""
Clone self volume to the specified dst_image_dir/dst_volUUID
"""
wasleaf = False
taskName = "parent volume rollback: " + self.volUUID
vars.task.pushRecovery(
task.Recovery(taskName, "volume", "Volume", "parentVolumeRollback",
[self.sdUUID, self.imgUUID, self.volUUID]))
if self.isLeaf():
wasleaf = True
self.setInternal()
try:
self.prepare(rw=False)
self.log.debug('cloning volume %s to %s', self.volumePath, dstPath)
parent = getBackingVolumePath(self.imgUUID, self.volUUID)
qemuimg.create(dstPath,
backing=parent,
format=fmt2str(volFormat),
backingFormat=fmt2str(self.getFormat()))
self.teardown(self.sdUUID, self.volUUID)
except Exception as e:
self.log.exception('cannot clone image %s volume %s to %s',
self.imgUUID, self.volUUID, dstPath)
# FIXME: might race with other clones
if wasleaf:
self.setLeaf()
self.teardown(self.sdUUID, self.volUUID)
raise se.CannotCloneVolume(self.volumePath, dstPath, str(e))
def clone(self, dst_image_dir, dst_volUUID, volFormat, preallocate):
"""
Clone self volume to the specified dst_image_dir/dst_volUUID
"""
wasleaf = False
dst_path = None
taskName = "parent volume rollback: " + self.volUUID
vars.task.pushRecovery(task.Recovery(taskName, "volume", "Volume", "parentVolumeRollback",
[self.sdUUID, self.imgUUID, self.volUUID]))
if self.isLeaf():
wasleaf = True
self.setInternal()
try:
self.prepare(rw=False)
dst_path = os.path.join(dst_image_dir, dst_volUUID)
self.log.debug("Volume.clone: %s to %s" % (self.volumePath, dst_path))
size = int(self.getMetaParam(SIZE))
parent = self.getVolumePath()
parent_format = fmt2str(self.getFormat())
# We should use parent's relative path instead of full path
parent = os.path.join(os.path.basename(os.path.dirname(parent)),
os.path.basename(parent))
createVolume(parent, parent_format, dst_path, size, volFormat, preallocate)
self.teardown(self.sdUUID, self.volUUID)
except Exception, e:
# FIXME: might race with other clones
if wasleaf:
self.setLeaf()
self.teardown(self.sdUUID, self.volUUID)
self.log.error("Volume.clone: can't clone: %s to %s" % (self.volumePath, dst_path))
raise se.CannotCloneVolume(self.volumePath, dst_path, str(e))