Zero restart-data loss method and logic storage resource management unit

A technology for logical storage and resource management, applied in the fields of restarting data loss-free methods and logical storage resource management units, can solve problems such as system specification reduction and increase memory, and achieve the effect of improving storage resource utilization.

Active Publication Date: 2011-09-14
NEW H3C TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, once fast recovery is to be supported, the specifications of the system must be greatly reduced, or additional memory must be added

Method used

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  • Zero restart-data loss method and logic storage resource management unit
  • Zero restart-data loss method and logic storage resource management unit
  • Zero restart-data loss method and logic storage resource management unit

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Experimental program
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Embodiment Construction

[0040] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0041] figure 1 The flow chart of the method for restarting without data loss when there is no file system support provided by the embodiment of the present invention, as shown in figure 1 As shown, the specific steps are as follows:

[0042] Step 100: The logical storage resource management unit pre-allocates a reserved memory dedicated to saving the storage resource mapping table, and notifies each data source unit of the virtual address of the reserved memory.

[0043] Here, the logical storage resource management unit only needs to notify the data source unit of the virtual address of the reserved memory such as: Application Programming Interface (API, Application Programming Interface), and the data source unit can complete the reading and writing of the reserved memory according to the virtual address operate.

[0044] Step 1...

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PUM

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Abstract

The invention discloses a zero restart-data loss method and device, wherein the method comprises the following steps: a reserved memory which is special for storing a storage resource mapping table is pre-assigned; before a system is restarted, the logic storage resource management unit assigns logic storage resources to a data source unit, and when the data source unit writes data into the logic storage resources, the logic storage resource management unit records the physical locations of the logic storage resources (into which the data is written) in the storage resource mapping table; when the system is restarted, the logic storage resource management unit acquires the physical locations of the logic storage resources (into which the data is written) from the storage resource mapping table, and sets physical memory blocks corresponding to the logic storage resources (into which the data is written) as a used state; and after the data source unit reads all data, the logic storage resource management unit releases all the logic storage resources. By using the method and unit disclosed by the invention, the utilization ratio of storage resources is improved.

Description

technical field [0001] The invention relates to the technical field of data storage, in particular to a restart data loss-free method and a logical storage resource management unit. Background technique [0002] With the improvement of high reliability requirements, the upper layer software will require the system to store some data before restarting, and the data can be read out after restarting, so as to realize the rapid recovery of operating data, thereby reducing the downtime of the system. [0003] In common computer systems, non-volatile storage devices such as disks and data cards are used to complete the above functions. However, in an embedded system, devices such as disks and data cards do not necessarily exist. Moreover, the access rate of disks and data cards is low. For some scenarios that require high reliability and a large amount of data, if disks and data cards are used to complete the above functions, the system downtime will be greatly prolonged. [000...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F12/16G06F12/08G06F12/1009
CPCG06F12/08G06F11/1417G06F2212/1032G06F9/4401G06F12/1009G06F3/067G06F3/0604G06F12/16G06F2212/1016G06F3/0631G06F2212/174
Inventor 魏巍
Owner NEW H3C TECH CO LTD
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