Method and device both for avoiding IO conflict in cloning system
A technology of IO request and starting position, which is applied in multi-programming devices, redundant operations in data error detection and response error generation, etc., can solve problems such as data inconsistency and IO conflict, and avoid data inconsistency. Effect
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[0023] In order to facilitate the understanding of those skilled in the art, the following further description of the present invention with reference to the accompanying drawings cannot be used to limit the protection scope of the present invention.
[0024] The present invention proposes a method for avoiding input and output IO conflicts in a cloning system. The method includes the following steps:
[0025] S101. According to the basic copy unit set by the user, logically divide the two clone volumes into multiple data blocks of the same size.
[0026] Preferably, the two clone volumes include a source volume and a target volume, and the source volume and the target volume have the same size. That is, both the source volume and the target volume are called clone volumes.
[0027] The basic unit of the clone copy is determined by the user. The user defines the size of the basic unit when creating the clone pair. According to the size, the two clone volumes are logically divided into...
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