Data processing method and system, computer equipment and readable storage medium

Abstract

The embodiment of the invention discloses a data processing method and system, computer equipment and a readable storage medium, and belongs to the technical field of computer storage. The data processing method comprises the steps that a first device writes first IO data contained in a received first IO request into a first memory, and when a set condition occurs, the first device generates first hard disk change indication information through the first IO data and writes the first hard disk change indication information into a second memory and a hard disk. As the first memory is a nonvolatile storage medium, under the condition of abnormal shutdown, even if the first hard disk change indication information in the second memory has not been written into the hard disk of the first equipment yet, the first IO data in the first memory cannot be emptied, so that the first IO data in the second memory cannot be emptied after the next startup; in this way, the second device can still back up the first IO data in the first device in the incremental backup mode based on the first IO data in the first memory, and real permanent incremental data protection is achieved.

Description

technical field [0001] The embodiments of the present application relate to the technical field of computer storage, and in particular to a data processing method, system, computer equipment, and readable storage medium. Background technique [0002] In order to avoid data loss in the first device, it is common to configure the second device for the first device. The second device is used to back up the data of the first device, so that when the first device is interrupted, the normal operation of the first device can be restored based on the data in the second device. [0003] In related technologies, when data is backed up in the second device, an incremental backup method is usually used. The incremental backup method refers to tracking the data written in the hard disk of the first device, and storing the newly written data in the hard disk in the second device, thereby reducing the backup time. The specific process is: based on the data that has not been backed up to ...

AI Technical Summary

Problems solved by technology

[0004] However, in practice, there are often unexpected cases of abnormal shutdown

At this time, the first device has no time to write the bitmap of the unbacked-up data into the hard disk, resulting in the loss of the bitmap of the unbacked-up data

Then the second device cannot back up only the data that has not been backed up through the incremental backup method, so that the data in the second device is missing, resulting in data backup failure

Images