Method and system for controlling logical unit of USB mass storage device

A large-capacity storage and logical unit technology, applied in the field of large-capacity storage, can solve the problems of logical unit application interruption, affecting application performance, availability and reliability, etc.

Active Publication Date: 2009-06-10
LENOVO GLOBAL TECH INT LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] Under the current technical conditions, the addition and removal of logical units will cause the running application to be interrupted, which will seriously affect the performance, availability and reliability of the application

Method used

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  • Method and system for controlling logical unit of USB mass storage device
  • Method and system for controlling logical unit of USB mass storage device
  • Method and system for controlling logical unit of USB mass storage device

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Experimental program
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Embodiment Construction

[0037] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0038] Figure 5 It is a flowchart illustrating a method for controlling a logic unit of a mass storage device according to an embodiment of the present invention. In the method, the mass storage device is connected to the host computer through a USB interface, the method comprising: in response to adding new logical units to the mass storage device and / or removing existing logical units therefrom, on the mass storage device Dynamically manage (modify) a logical unit table associated with a logical unit and generate a corresponding hot plug event; and notify the host computer of the hot plug event.

[0039] Such as Figure 5 As shown, in step S501, it is detected whether a new logical unit is added to the mass storage device or an existing logical unit is removed. In step S502, in response to the addition or removal, the logical unit table is dynami...

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PUM

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Abstract

The invention relates to a method for controlling a logic cell of a high-capacity storage apparatus, the high-capacity storage apparatus, a high-capacity storage apparatus driver and a high-capacity storage system, wherein the high-capacity storage apparatus is connected to a master computer through a USB interface. The method comprises: responding to the addition and / or deletion of a logic unit; dynamically managing a logic unit list associated with the logic unit and generating corresponding hot plug events on the large-capacity storage apparatus; and notifying the hot plug events to the master computer. In the invention, the plug and play of the logic unit is realized through dynamically managing the logic unit and generating the corresponding hot plug events as well as notifying the events to the master computer.

Description

technical field [0001] The present invention relates to mass storage technology based on universal serial bus, more specifically, the present invention relates to a kind of method for controlling the logic unit of mass storage device and mass storage device, mass storage device driver and mass storage system. Background technique [0002] Universal Serial Bus (USB) mass storage device class (USB mass storage deviceclass) is a computing communication protocol set running on USB defined by USB-IF (USB Implementers Forum), which includes: (1) USB mass storage device class Storage device class control / batch / interrupt (control / bulk / interrupt or CBI) transfer; (2) USB mass storage device class bulk-only transfer. It also includes the following subclass specifications: (1) ATA command block of USB mass storage device class; (2) UFI command specification of USB mass storage device class; (3) RBC command specification of USB mass storage device class; 4) QIC-157 command specificati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/06
CPCG06F13/385
Inventor 谌伟孟宪栋兰龙文徐健
Owner LENOVO GLOBAL TECH INT LTD
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