Distributed storage system and storage method thereof

A distributed storage and storage space technology, applied in the field of distributed block storage, can solve the problems that the distributed storage system cannot realize non-thin LUN, and achieve the effect of reducing the impact

Active Publication Date: 2020-05-29
SUGON INFORMATION IND
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Problems solved by technology

[0003] Aiming at the problem that non-thin LUNs cannot be implemented in distributed storage systems in related tech

Method used

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  • Distributed storage system and storage method thereof
  • Distributed storage system and storage method thereof

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Embodiment Construction

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments in this application belong to the protection scope of this application.

[0032] see figure 1 , the application provides a storage method in a distributed storage system, including:

[0033] Step S101: When the client initiates a write request to the user access node of the thin LUN, the space management module provides the specified reserved space for the write request;

[0034] Step S102: When the client initiates the write request to the user access node of the non-thin LUN, the non-thin LUN reserves all storage space when it is created, and the space management module provides all stor...

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Abstract

The invention discloses a storage method in a distributed storage system, which comprises the following steps: when a client initiates a write request to a user access node of a simplified LUN, providing a specified reserved space for the write request by a space management module; and when the client initiates the write request to a user access node of a non-simplified LUN, reserving all the storage spaces by the non-simplified LUN during creation, and providing all the reserved storage spaces for the write request by the space management module. According to the method and the device, the simplified LUN and the non-simplified LUN are created in the same storage pool, so that the non-simplified LUN characteristic is realized in the distributed storage system. In addition, the invention further provides a distributed storage system.

Description

technical field [0001] The present application relates to the technical field of distributed block storage, and in particular, to a distributed storage system and a storage method thereof. Background technique [0002] Non-thin LUN (abbreviation of Thick Logical Unit Number, that is, non-thin logical unit number, used to refer to a physical storage device) is a concept opposite to thin LUN (Thin Logical Unit Number) in the field of block storage. Thin LUN storage Space is allocated on demand. Usually in stand-alone or centralized storage, metadata access is concentrated in one node, space reservation and allocation are completed in one transaction, and ACID (Atomicity, Consistency, Isolation, Durability) of metadata / data modification is guaranteed through transactions. , that is, the atomicity, consistency, isolation, durability, etc.) properties of transactions. However, in a distributed storage system, distributed transactions have a great impact on system performance, s...

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Application Information

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IPC IPC(8): G06F3/06
CPCG06F3/067G06F3/064G06F3/0644
Inventor 张光凯
Owner SUGON INFORMATION IND
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