IO data classification and deletion method and device and computer readable storage medium

Abstract

The embodiment of the invention discloses an IO data classification deletion method and device and a computer readable storage medium. The method comprises: mounting the IO data to a matched first-level linked list according to the mapping relation between the IO data and a storage volume when the read-write operation of the IO data is executed; migrating the responded PIO data on each first-levellinked list or the PIO data which is not called over a first preset time to a second-level linked list; and when the first-level linked list is empty or the data is not called from the second-level linked list over a second preset time, deleting the data on the second-level linked list. According to the technical scheme, by setting the first-level linked list for each storage volume, it is guaranteed that data of the same storage volume is recorded in the same linked list, it is not needed to inquire the data needing to be cleared from the linked list according to the volume ID, and the IO data clearing efficiency is effectively improved. And by setting the first-level linked list and the second-level linked list, data which has been responded or is not called for a long time is migratedto the second-level linked list, so that useless data can be quickly deleted.

Description

technical field [0001] The present invention relates to the technical field of data processing, in particular to a method, device and computer-readable storage medium for classifying and deleting IO data. Background technique [0002] Under the Linux system, perform the operation of deleting the storage volume, which needs to clear the host data corresponding to the volume, that is, the HIO data. A storage volume often includes multiple HIO data, and each HIO data is composed of multiple PIO data, and the PIO data is generally used as the minimum processing unit in the data processing process. [0003] The method of cleaning IO data in the prior art is to search the HIO on the linked list according to the volume ID passed from the command line, and judge whether the found HIO belongs to the volume by its size. If it belongs to the volume, mark the HIO to be deleted , and then look up the PIO on the linked list of the marked HIO, and judge whether the PIO belongs to the volu...

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Problems solved by technology

[0003] The method of cleaning IO data in the prior art is to search the HIO on the linked list according to the volume ID passed from the command line, and judge whether the found HIO belongs to the volume by its size. If it belongs to the volume, mark the HIO to be deleted , and then look up the PIO on the linked list of the marked HIO, and judge whether the PIO belongs to the volume according to the size. If it belongs, the PIO will be removed from the linked list and released. The cleaning efficiency is low

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