公开(公告)号：US09952767B2

公开(公告)日：2018-04-24

申请号：US15142767

申请日：2016-04-29

Applicant: NetApp, Inc.

Inventor： Ling Zheng ,  Ning Zhao ,  Radek Aster ,  Jeffrey S. Kimmel

IPC: G06F3/06

CPC classification number: G06F3/0604 ,  G06F3/0617 ,  G06F3/065 ,  G06F3/0656 ,  G06F3/067 ,  G06F11/20

Abstract: A consistency group is used as a basic unit of data management of storage containers served by a storage input/output (I/O) stack executing on one or more nodes of a cluster. The storage container may be a LUN embodied as parent volume (active volume), a snapshot (represented as an independent volume embodied as read-only copy of the active volume), and a clone (represented as another independent volume embodied as a read-write copy (clone) of the active volume). A consistency group (CG) is a set (i.e., collection) of objects, e.g., LUNs or other CGs (nested CG), which may be managed and operated upon collectively by an administrative command via a Storage Area Network administration layer (SAL) of the storage I/O stack. The SAL may interact with one or more layers of the storage I/O stack to (i) create a clone of a set of object members of the CG; (ii) create one or more snapshots of the set of object members of the CG; (iii) restore the set of object members of the CG from a group of CG snapshots; (iv) replicate the set of object members of the CG as a single entity; and (v) delete a CG and a nested CG according to specific semantics.

公开(公告)号：US20170315728A1

公开(公告)日：2017-11-02

申请号：US15142767

申请日：2016-04-29

Applicant: NetApp, Inc.

Inventor： Ling Zheng ,  Ning Zhao ,  Radek Aster ,  Jeffrey S. Kimmel

IPC: G06F3/06

CPC classification number: G06F3/0604 ,  G06F3/0617 ,  G06F3/065 ,  G06F3/0656 ,  G06F3/067 ,  G06F11/20

Abstract: A consistency group is used as a basic unit of data management of storage containers served by a storage input/output (I/O) stack executing on one or more nodes of a cluster. The storage container may be a LUN embodied as parent volume (active volume), a snapshot (represented as an independent volume embodied as read-only copy of the active volume), and a clone (represented as another independent volume embodied as a read-write copy (clone) of the active volume). A consistency group (CG) is a set (i.e., collection) of objects, e.g., LUNs or other CGs (nested CG), which may be managed and operated upon collectively by an administrative command via a Storage Area Network administration layer (SAL) of the storage I/O stack. The SAL may interact with one or more layers of the storage I/O stack to (i) create a clone of a set of object members of the CG; (ii) create one or more snapshots of the set of object members of the CG; (iii) restore the set of object members of the CG from a group of CG snapshots; (iv) replicate the set of object members of the CG as a single entity; and (v) delete a CG and a nested CG according to specific semantics.