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Data correction method and electronic device

A technology for data correction and electronic equipment, applied in the field of virtualization, which can solve the problems of application limitations, inability to solve the problem of time drift, and inability to guarantee the accuracy and reliability of virtual machine output time, so as to ensure accuracy and reliability, solve the The effect of time drift

Active Publication Date: 2016-01-20
LENOVO (BEIJING) LTD
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Problems solved by technology

[0006] In view of this, the present invention provides a data correction method and electronic equipment, which solves the problem that the existing data correction method requires that the current virtual environment must build an NTP server and be able to connect to the external network. The NTP server can be used to correct the output time of the virtual machine only if the interval between backup and recovery operations is short. Accuracy and reliability of virtual machine output times

Method used

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  • Data correction method and electronic device

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Embodiment Construction

[0059] 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.

[0060] At present, with the rapid development of computer technology, in order to meet the actual functional requirements, a large number of processor cores are usually integrated into one chip. However, how to maximize the effect of the integrated chip will be a severe challenge for the software. Now Some operating systems and software cannot take full advantage of the rapidly developing parallel computing capabilities of hardware. In order to solve this prob...

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Abstract

The application provides a data correction method and an electronic device. The method comprises: when detecting that a virtual machine is paused in operation due to the execution of a backup operation, reading and storing first current time of a plurality of to-be-selected time sources; and when the virtual machine performs a recovery operation on backup content of the backup operation, selecting a target time source from the to-be-selected time sources according to a first preset rule, reading second current time of the target time source, and comparing the second current time with the first current time to obtain a target time difference value, namely, a virtual machine pause time, of a process from the backup operation to the recovery operation, wherein at the moment, no matter how long the virtual machine pause time is, an NTP server is constructed in a current virtual environment. According to the method, system time of the virtual machine is accurately corrected by utilizing the target time difference value to solve the time shift problem caused in the backup and recovery operations and ensure accurate and reliable output time.

Description

technical field [0001] The present invention mainly relates to the technical field of virtualization, and more specifically relates to a data correction method and electronic equipment. Background technique [0002] The virtual machine online migration technology refers to moving the virtual machine operating system and applications running on the source physical host to the target physical host or virtual machine, and running normally on the target physical host without interrupting the physical host, thereby Improve the reliability of physical host work. [0003] Based on this, in practical applications, especially in system backup and recovery applications, when a physical server with unstable performance is detected, due to the high reliability of the virtual machine, the virtual machine can be dynamically migrated away directly. , which will not affect the operation of the application or service in the virtual machine; and in a distributed virtualization environment, t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F9/455G06F11/14
Inventor 刘军杨杰
Owner LENOVO (BEIJING) LTD
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