Virtual equipment reconstruction method and apparatus

A technology of virtual equipment and equipment, applied in the field of virtual tape library VTL technology, can solve the problems of backup business operation failure and other problems

Active Publication Date: 2014-05-21
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Other nodes will take over the business of the failed node. During the takeover process, the backup services running on the failed node will fail

Method used

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  • Virtual equipment reconstruction method and apparatus
  • Virtual equipment reconstruction method and apparatus
  • Virtual equipment reconstruction method and apparatus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] refer to figure 1 , a virtual device reconstruction method, applied in the VTL cluster 13, the VTL cluster 13 includes a first VTL node 131 and a second VTL node 132, the backup server 11 communicates with the first VTL node 131 and the second VTL node through the switching device 12 132 Establish a communication connection. The VTL system 1 is jointly composed of clusters 13 and storage devices 14 . The storage device 14 establishes a communication connection with the first VTL node and the second VTL node. The first VTL node creates at least one virtual device, and the device address of the virtual device on the first VTL node is unique in the VTL cluster. According to the difference in the communication mode between the backup server 11 and the VTL cluster 13, the switching device 12 can be a switching device based on IP or a WWPN based switching device, and the storage device 14 can be a redundant array of cheap disks RAID group or integrated with the VTL device h...

Embodiment 2

[0051] This embodiment is about failover operations. when figure 1 After the failure of the first VTL node 131 is restored, the virtual device migrated to the second VTL node 132 can be migrated back to the first VTL node 131.

[0052] The principle of this embodiment is basically the same as the steps S22, S23, S24, and S25 of the first embodiment. The difference is that, in step S22, after detecting that the first VTL node 131 fails, the second VTL node 132 takes over the entry address of the first VTL node 131, and the second VTL node 132 Obtain the configuration information, device address, ingress address, and egress address of the backup server of the virtual device. In the corresponding steps of the second embodiment, when it is detected that the first VTL node 131 recovers from failure, the first VTL node 132 takes over the entry address taken over by the second VTL node 131 again.

[0053] On the basis of studying the first embodiment, those skilled in the art can ...

Embodiment 3

[0055] Based on Embodiment 1 and Embodiment 2, the present invention further provides an embodiment of a virtual device reconstruction device. The virtual device rebuilding device is located in the node, for example, the second VTL node below, that is to say, the virtual device rebuilding device can be software or hardware with corresponding functions integrated in the node, or it can be the node itself.

[0056] See attached image 3 , in this embodiment, the virtual device reconstruction device 3 is located in the second VTL node, the virtual magnetic tape library VTL cluster includes the first VTL node and the second VTL node, the backup server and the first VTL node and the The second VTL node establishes a communication connection, the storage device establishes a communication connection with the first VTL node and the second VTL node, the first VTL node creates at least one virtual device, and the device address of the virtual device on the first VTL node Unique in the...

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Abstract

The invention provides a virtual device reconstruction technology. In a virtual device reconstruction method, a second VTL node takes over an enetry address of a first VTL node, the second VTL node acquires configuration information of a virtual device, a device address, an entery address and backup server exit addresses, the second VTL node generates a reconstructed virtual device by utilizing the configuration information, the device address is allocated to the reconstructed virtual device, and mapping relations between the reconstructed virtual device and the VTL device entry address and between the reconstructed virtual device and the backup service exit addresses are established. By application of the reconstructed virtual device, the business being backuped of the original virtual device can be taken over smoothly.

Description

technical field [0001] The invention relates to the field of storage, in particular to a virtual magnetic tape library VTL technology. Background technique [0002] With the rapid development of computer technology, the amount of data in data centers of various institutions and enterprises is growing explosively, and correspondingly, the time required to back up data in each data center has also increased significantly. Therefore, the data centers of various institutions and enterprises have introduced disk backup storage with higher backup performance, such as virtual tape library (VTL, Virtual Tape Library) to replace traditional physical tape library backup storage, in order to shorten data backup time and reduce data loss. The impact of small backup services on production services. [0003] VTL products usually consist of servers, VTL devices, and storage arrays. VTL devices can run VTL programs. The server sends the data to be backed up to the VTL device, and the VTL ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/06
CPCH04L69/40H04L67/1034
Inventor 汪野
Owner HUAWEI TECH CO LTD
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