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Method, device and system for asynchronous directory replication

An asynchronous replication and purpose technology, applied in the direction of file system, storage system, file system function, etc., can solve the problems of occupying space, growing the mapping table, increasing the delay of updating/searching, etc.

Pending Publication Date: 2021-06-22
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The distribution of the table can be done through sharding, but the update and lookup of the table needs to communicate across multiple nodes, which increases the update / find delay and reduces the overall replication performance
Also, the mapping table can grow to be very large and take up a lot of space

Method used

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  • Method, device and system for asynchronous directory replication
  • Method, device and system for asynchronous directory replication
  • Method, device and system for asynchronous directory replication

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Embodiment Construction

[0048] The technical solutions in the embodiments of the present invention will be clearly described below with reference to the drawings in the embodiments of the present invention. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0049] The invention can be implemented in numerous ways, including as a process, an apparatus, a system, a composition of matter, a computer readable medium such as a computer readable storage medium, or a computer network where program instructions are transmitted over optical or electronic communication links. In this specification, these implementations, or any other form that the invention may take, may be referred to as techniques. In general, the order of steps in ...

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PUM

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Abstract

The present invention discloses a method, a device and a system for asynchronous directory replication. The method comprises the steps of configuring an inode identifier of an object stored in a source NAS, the inode identifier of the object having a first inode space identifier and a first local inode identifier (601), wherein the first inode space identifier indicates that the object is created by the source NAS; copying the object to a target NAS to be stored as a target object (602), wherein an inode identifier of the target object having a second inode space identifier and a second local inode identifier, wherein the second inode space identifier indicates that the target object is received from the source NAS, and wherein the second local inode identifier is identical to the first local inode identifier; and creating a mapping between the first inode space identifier and the second inode space identifier (603).

Description

technical field [0001] The subject matter described herein relates generally to asynchronous directory replication in arrays, and more specifically, to a method for asynchronous directory replication by creating unique index node (inode) space identifications and maintaining inode space tables for mapping, equipment and systems. Background technique [0002] Network-attached storage (NAS) is a file-level computer data storage server that connects to a computer network to provide data access to a heterogeneous group of clients. NAS specializes in providing hardware, software, or configuration services for files. [0003] Most NAS arrays support asynchronous replication as a disaster recovery solution. Asynchronous replication is typically implemented using snapshot technology, where periodic snapshots are taken of the source file system and the differences between these snapshots are copied to the destination file system. A snapshot is a point-in-time copy of a file system...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F12/00
CPCG06F3/065G06F3/067G06F3/0604G06F16/119G06F16/17G06F16/1734G06F16/182G06F16/164G06F16/1827G06F16/128G06F16/152
Inventor 纳文·拉朱詹姆斯·南布里坎达蒂尔·约瑟夫
Owner HUAWEI TECH CO LTD