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Multi-namespace LBA (logical block addressing) processing method and device

A namespace and firmware technology, applied in the field of data processing, which can solve the problems of firmware LBA difficulty, LBA discontinuity, and firmware LBA fragmentation.

Inactive Publication Date: 2017-11-24
ZHENGZHOU YUNHAI INFORMATION TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing SSDs can support multiple namespaces. Due to the possibility of users repeatedly creating, deleting, or merging namespaces, the firmware LBA may be fragmented, that is, the LBAs in the entire namespace may be discontinuous. It is very difficult to convert the host LBA to the firmware LBA in the namespace

Method used

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  • Multi-namespace LBA (logical block addressing) processing method and device
  • Multi-namespace LBA (logical block addressing) processing method and device

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Embodiment Construction

[0038] 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.

[0039] see figure 1 , which shows a flow chart of a method for processing multiple namespaces provided by an embodiment of the present invention, which may include:

[0040]S11: Receive the command sent by the host, the command specifies a namespace in multiple namespaces, each namespace includes multiple firmware LBA segments, each firmware LBA segment has a corresponding segment number, and each firmware LBA segment includes Multiple firmware LBAs.

[0041...

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Abstract

The invention discloses a multi-namespace LBA (logical block addressing) processing method and device. The method includes: receiving an instrument sent by a mainframe, wherein the instruction designates one namespace from multiple namespaces, each namespace includes multiple firmware LBA segments, and each firmware LBA segment has a corresponding segment number and includes multiple firmware LBAs; calculating the segment number of the corresponding firmware LBA segment of the corresponding mainframe LBA of the instrument in the namespace designated in the instrument, and determining the location of the corresponding firmware LBA of the mainframe LBA in the firmware LBA segment corresponding to the segment number so that the mainframe can execute the instruction on the basis of the firmware LBA corresponding to the location. With the method, conversion from the mainframe LBA to the firmware LBA is performed easily and simply, and the mainframe is conveniently positioned to the firmware LBA to execute the instrument; the device corresponds to the method, and the mainframe LBA is converted into the firmware LBA easily and simply.

Description

technical field [0001] The present invention relates to the technical field of data processing, and more specifically, to a method and device for processing multi-namespace LBAs. Background technique [0002] For an enterprise, there may be a large amount of different types of data, so the capacity of its storage devices (such as solid-state drives) will be large. In order to improve the security and independence of different types of data, it is usually necessary to combine different types of data Data is placed in a relatively independent logical space. When dividing the logical space of the storage device, the concept of namespace (namespace) is introduced, and each namespace is composed of several independent LBAs (Logical Block Address, logical block address). [0003] When the host issues an I / O (I / O, Input / Output, input / output) command, it is necessary to convert the host LBA corresponding to the host command into the firmware LBA in the command space, so as to reali...

Claims

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Application Information

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IPC IPC(8): G06F12/02G06F3/06
CPCG06F3/0607G06F3/0644G06F3/0679G06F12/023
Inventor 刘子明
Owner ZHENGZHOU YUNHAI INFORMATION TECH CO LTD
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