def __init__(
self, parent_storage_obj: m.SnapshotStorage,
children_snapshot_storage_objs: typing.List[m.SnapshotStorage]):
super(MergeWork, self).__init__()
self.parent_storage: storage.Storage = storage.Storage(
parent_storage_obj) if parent_storage_obj else None
self.children_snapshot_storage: typing.List[storage.Storage] = [
storage.Storage(_) for _ in children_snapshot_storage_objs
]
self.new_storage: storage.Storage = self._create_or_get_new_storage()
def children_storages(self) -> typing.List[storage.Storage]:
if not self.journal_obj.children_idents:
return list()
return [
storage.Storage(da_storage.get_obj_by_ident(ident))
for ident in self.journal_obj.children_idents.split(',')
]
def __init__(
self, parent_storage_obj: m.SnapshotStorage,
merge_storage_obj: m.SnapshotStorage,
children_snapshot_storage_objs: typing.List[m.SnapshotStorage]):
# 校验入参数据
if parent_storage_obj is None: # 被合并的快照是根节点
assert len(children_snapshot_storage_objs) == 1 # 子节点的数量必须为 1
assert merge_storage_obj.parent_ident is None
else:
assert merge_storage_obj.parent_ident == parent_storage_obj.ident
for child in children_snapshot_storage_objs:
assert child.parent_ident == merge_storage_obj.parent_ident
# 构造
self.merge_storage: storage.Storage = storage.Storage(
merge_storage_obj)
super(MergeQcowSnapshotTypeAWork,
self).__init__(parent_storage_obj,
children_snapshot_storage_objs)
def __init__(
self, parent_storage_obj: m.SnapshotStorage,
merge_storage_obj: m.SnapshotStorage,
children_snapshot_storage_objs: typing.List[m.SnapshotStorage],
storage_tree: tree.DiskSnapshotStorageTree, call_name: str):
# 校验入参数据
assert merge_storage_obj.parent_ident == parent_storage_obj.ident
assert merge_storage_obj.image_path != parent_storage_obj.image_path
for child in children_snapshot_storage_objs:
assert child.parent_ident == merge_storage_obj.parent_ident
assert child.image_path != merge_storage_obj.image_path
# 构造
self.merge_storage: storage.Storage = storage.Storage(
merge_storage_obj)
super(MergeQcowSnapshotTypeBWork,
self).__init__(parent_storage_obj,
children_snapshot_storage_objs)
call_name += f' MergeQcowSnapshotTypeBWork {self.new_storage.ident}'
self.write_chain: chain.StorageChainForWrite = self._create_write_chain(
storage_tree, call_name)
def __init__(
self, parent_storage_obj: m.SnapshotStorage,
merge_cdp_snapshot_storage_objs: typing.List[m.SnapshotStorage],
children_snapshot_storage_objs: typing.List[m.SnapshotStorage],
storage_tree: tree.DiskSnapshotStorageTree, call_name: str):
# 校验入参数据
assert len(merge_cdp_snapshot_storage_objs) > 0
assert merge_cdp_snapshot_storage_objs[
0].parent_ident == parent_storage_obj.ident
for child in children_snapshot_storage_objs:
assert child.parent_ident == children_snapshot_storage_objs[
-1].parent_ident
# 构造
super(MergeCdpWork, self).__init__(parent_storage_obj,
children_snapshot_storage_objs)
self.merge_cdp_snapshot_storages: typing.List[storage.Storage] = [
storage.Storage(_) for _ in merge_cdp_snapshot_storage_objs
]
call_name += f' MergeCdpWork {self.new_storage.ident}'
self.rw_chain: chain.StorageChainForRW = self._create_rw_chain(
storage_tree, call_name)