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Method, device and computer-readable storage medium for deleting volume mapping

A deletion method and a technology of a deletion device, which are applied in computing, memory systems, multi-programming devices, etc., and can solve problems affecting IO processing performance, etc.

Active Publication Date: 2022-07-08
LANGCHAO ELECTRONIC INFORMATION IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When performing a lun delete operation, a lock operation is required, and the processing of IO read and write requests also requires a lock operation, resulting in resource competition between the lun delete operation and the processing of IO read and write requests, which affects the IO processing performance

Method used

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  • Method, device and computer-readable storage medium for deleting volume mapping
  • Method, device and computer-readable storage medium for deleting volume mapping
  • Method, device and computer-readable storage medium for deleting volume mapping

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Embodiment Construction

[0051] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

[0052] In order to make those skilled in the art better understand the solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0053] Next, a method for deleting a volume map provided by an embodiment of the present invention is introduced in detail. figure 1 A flowchart of a method for deleting a volume map provided by an embodim...

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Abstract

The embodiment of the present invention discloses a method, device and medium for deleting a volume mapping. According to the storage device identification carried in the offline instruction, the lun corresponding to the storage device identification is adjusted to an offline state. When a scsi request directed to the lun is received, a blocking flag is set for the scsi request, and the scsi request with the blocking flag is cached in a preset queue. When the number of pending scsi requests is zero, the storage resources used by the lun to perform disk read and write operations can be released, and the lun can be removed from the target list. By adjusting the lun to the offline state, and setting the blocking flag for the scsi request directed to the lun after the lun is adjusted to the offline state, the processing of the scsi request and the orderly execution of the lun delete operation can be ensured, and there is no need to add the lun delete operation. Lock processing effectively reduces the impact of the lun deletion operation on IO processing performance.

Description

technical field [0001] The present invention relates to the technical field of storage devices, and in particular, to a method, an apparatus and a computer-readable storage medium for deleting a volume map. Background technique [0002] The current use of the Internet Small Computer System Interface (iSCSI) service needs to start a target (target) service on the storage side, that is, an iSCSI server program. Start the iSCSI initator service on the client, that is, the iSCSI client program. Generally, a target needs to be created in the server program, and the storage device provided by the storage end is added to the target map. After the iSCSI client connects to the target, it can access all the volume mappings (lun) under the target, that is, the storage device mapping provided by the storage side. [0003] After connecting to the client, the storage device mapping in the target cannot be deleted online. After the client actively disconnects the target link, the storage...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F12/0873G06F9/50
CPCG06F12/0873G06F9/5016
Inventor 杨鸿洁胡永刚
Owner LANGCHAO ELECTRONIC INFORMATION IND CO LTD
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