Data migration method, system, apparatus, and computer-readable storage medium
A computer program and data technology, applied in the field of storage, can solve problems such as inability to write new data, failure of data migration, etc.
Inactive Publication Date: 2019-03-12
ZHENGZHOU YUNHAI INFORMATION TECH CO LTD
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[0004] However, during the process of migrating all the data in the old disk to the new disk, the old disk may need to store new data. However, at this time, the old disk is still full and new data cannot be written, thus making the data migration fail
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[0053] 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. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.
[0054]With the rise and popularization of cloud computing technology, distributed storage systems have attracted more and more attention from the industry. In the operation and maintenance project of the distributed storage system, it may be encountered that the space usage rate of the distributed storage system has reached the alarm level. At this time, expansion is required, that is, data migration is required. An existing data migration method is: all the data in the old disk is ...
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A data migration method, system, apparatus, and computer readable storage medium are disclosed for use in a distributed storage system. The method includes determining an old disk for data migration in the distributed storage system; Grouping data to be migrated in the old disk to obtain data blocks to be migrated; A data block to be migrated is selected from the old disk, and the selected data block to be migrated is migrated. After the selected data blocks to be migrated are migrated, the data blocks to be migrated are deleted in the old disk; Returns the step of selecting a block of data tomigrate from the old disk until the data migration to the old disk is complete. The data migration method disclosed in the present application reduces the risk of data migration failure due to the old disk being unable to write new data, and improves the data migration success rate. A data migration system, a device and a computer readable storage medium provided by the present application also solve corresponding technical problems.
Description
technical field [0001] The present application relates to the field of storage technologies, and more specifically, to a data migration method, system, device, and computer-readable storage medium. Background technique [0002] With the rise and popularization of cloud computing technology, distributed storage systems have attracted more and more attention from the industry. In the operation and maintenance project of the distributed storage system, it may be encountered that the space usage rate of the distributed storage system has reached the alarm level. At this time, expansion is required, that is, data migration is required. [0003] An existing data migration method is: all the data in the old disk is migrated to the new disk, and then the data in the old disk is deleted. [0004] However, during the process of migrating all the data in the old disk to the new disk, the old disk may need to store new data. However, at this time, the old disk is still full and new dat...
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IPC IPC(8): G06F3/06
CPCG06F3/0623G06F3/064G06F3/0647G06F3/067G06F3/0676
Inventor 许银龙
Owner ZHENGZHOU YUNHAI INFORMATION TECH CO LTD