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QoS scheduler and scheduling method for SCSI target device

A scheduling method and target device technology, applied in the storage field, can solve the problems of IO request processing process confusion, system processing capacity resource competition, etc.

Active Publication Date: 2016-03-16
INSPUR BEIJING ELECTRONICS INFORMATION IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current SCSI target device only supports the method of "first come, first served" to process the IO (IO, namely Input / Output, input and output) requests sent by the server.
In this way, if there are two or more servers that initiate IO requests to the SCSI target within the same period of time, it will cause natural competition for system processing capacity resources among the servers, resulting in confusion in the IO request processing process

Method used

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  • QoS scheduler and scheduling method for SCSI target device
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  • QoS scheduler and scheduling method for SCSI target device

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Embodiment Construction

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0030] The embodiment of the present invention discloses a QoS scheduler applied to a SCSI target device. The SCSI target device includes an interface module, a SCSI instruction processing module and a storage module; specifically, the above-mentioned SCSI target device is LIO (ie Linux-IOTarget), SCST (ie GenericSCSITargetSubsystemForLinux) or TGT (ie LinuxSCSITargetFramework). In addition, the above-mentioned interface module may specifically be an ISCSI int...

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Abstract

The invention discloses a QoS scheduler and a scheduling method for an SCSI target device. The QoS scheduler comprises an IO storage queue set, a monitoring unit and a QoS scheduling unit, wherein the IO storage queue set comprises N IO storage queues, the IO storage queues and servers are in one-to-one correspondence, each storage queue stores IO data sent by the corresponding server, the monitoring unit adjusts scheduling priority of each IO storage queue in the IO storage queue set to acquire corresponding QoS scheduling strategy, so IO data stored in each IO storage queue can be sequentially processed according to the QoS scheduling strategies, natural competition among the servers for system processing capability resources can be avoided, and a confusion situation of an original IO request processing process is eliminated.

Description

technical field [0001] The invention relates to the technical field of storage, in particular to a QoS scheduler and a scheduling method applied to a SCSI target device. Background technique [0002] At present, SAN (SAN, Storage Area Network, storage area network) is a high-speed storage network, usually with SCSI protocol (SCSI, Small Computer System Interface, small computer system interface) as a storage access protocol, supporting direct high-speed communication between servers and storage devices. data transmission. However, the current SCSI target device only supports the method of "first come, first served" to process the IO (IO, ie, Input / Output, input and output) requests sent by the server. In this way, if there are two or more servers that initiate IO requests to the SCSI target within the same period of time, it will cause natural competition for system processing capacity resources among the servers, resulting in confusion in the IO request processing process ...

Claims

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Application Information

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IPC IPC(8): H04L12/863H04L29/08
CPCH04L47/6215H04L67/1097
Inventor 刘健鹏
Owner INSPUR BEIJING ELECTRONICS INFORMATION IND
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