Fragment management method and fragment management apparatus
AssigneeHuawei Technologies Co., Ltd.
InventorsChen Wang, Tangren Yao, Feng Wang
Life of this patent
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Abstract
A computing node in a storage system is configured to send an instruction of migration of a parity fragment of a plurality of data fragments from a first-level storage medium to a second-level storage medium, where performance of the second-level storage medium is lower than the first-level storage medium.
Claims20
A method implemented by a computing node, the method comprising:
- storing data fragments and a first parity fragment of the data fragments in a first-level storage media;
- migrating the first parity fragment from the first-level storage media to a second-level storage medium of the storage system and keeping the data fragments stored in the first-level storage media, wherein the first-level storage media is a high-speed storage medium, wherein the second-level is a low-speed storage medium, and wherein the first-level storage media and the second-level storage medium are different types of storage media;
- storing the first parity fragment in the second-level storage medium.
A storage system, comprising:
- first-level storage media configured to store data fragments and a first parity fragment of the data fragments;
- a second-level storage medium, wherein the first-level storage media is a high-speed storage medium, wherein the second-level is a low-speed storage medium, and wherein the first-level storage media and the second-level storage medium are different types of storage media;
- and
- a computing node coupled to the first-level storage media and the second-level storage medium and configured to send a first migration instruction for migrating the first parity fragment from the first-level storage media to the second-level storage medium while the data fragments remain located in the first-level storage media.
A method implemented by a computing node, the method comprising:
- sending data fragments and a first parity fragment of the data fragments to first-level storage media of a storage system for storage, wherein the storage system comprises the first-level storage media and a second-level storage medium, wherein the first-level storage media is a high-speed storage medium, wherein the second-level is a low-speed storage medium, and wherein the first-level storage media and the second-level storage medium are different types of storage media;
- and
- sending the first parity fragment to the second-level storage medium for storage, wherein the data fragments remain stored in the first-level storage media after the first parity fragment is stored in the second-level storage medium.
A computing node for migrating data, comprising:
- a memory configured to store instructions;
- and
- a processor coupled to the memory and configured to execute the instructions to cause the processor to be configured to:
- send data fragments to first-level storage media for storage;
- and
- send a first parity fragment of the data fragments from first-level storage media to a second-level storage medium for storage, wherein the first-level storage media is a high-speed storage medium, wherein the second-level is a low-speed storage medium, wherein the first-level storage media and the second-level storage medium are different types of storage media, and wherein the data fragments remain stored in the first-level storage media after the first parity fragment is stored in the second-level storage medium.
A computing node for data migrating in a storage system comprising first-level storage media and a second-level storage medium, wherein data fragments and a first parity fragment of the data fragments are located in the first-level storage media, the computing node comprising:
- a memory configured to store instructions;
- and
- a processor coupled to the memory and configured to execute the instructions to cause the processor to be configured to send a first migration instruction for migrating the first parity fragment from the first-level storage media to the second-level storage media,
- wherein the first-level storage media is a high-speed storage medium,
- wherein the second-level is a low-speed storage medium,
- wherein the first-level storage media and the second-level storage medium are different types of storage media, and
- wherein the data fragments remain located in the first-level storage media after the first parity fragment is migrated to the second-level storage media.
Dependencies are inferred from the claim text.