Distributed lock resource control authority transferring method and device of mirror image document

Abstract

The invention relates to the technical field of server virtualization, particularly to a distributed lock resource control authority transferring method and device of a mirror image document and is used for transferring a virtual machine and the lock resource control authority of a virtual machine mirror image document located at the same node as the virtual machine to a target node so as to reduce locking delay and resource calculation expense of the virtual machine and improve the usability of both the distributed document system and the virtual machine and avoid the problem of the reading-writing performance reduction of the virtual machine caused by the usability. The method comprises the method of generating first lock resource information corresponding to the mirror image document ofthe virtual machine by the target node where the virtual machine is transferred; sending a lock resource control authority transferring request to a source node based on the identifier of the sourcenode; feeding back lock state information of each node corresponding to the identifier of the first lock resource information for the lock resource based on the source node to obtain second lock resource information; and notifying other nodes that the updated lock resource control authority owner serves as the target node.

Description

technical field [0001] The present application relates to the technical field of server virtualization, and in particular to a method and device for migrating distributed lock resource control rights of image files. Background technique [0002] In server virtualization products, multiple physical hosts (hereinafter referred to as nodes) are used to form a virtualized working cluster; at least one virtual machine runs in the virtualized working cluster; the virtual machines in the virtualized working cluster are managed by virtualization software , to realize the creation, migration, and cancellation of virtual machines; virtualization software generally uses a shared file system as a carrier for storing virtual machine image files; nodes exchange messages through the network to coordinate access to shared storage space, making virtualization work Multiple nodes in the cluster can access the same storage space. [0003] In order to coordinate the access of different nodes t...

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Problems solved by technology

[0004] When it is necessary to migrate a virtual machine running on a certain node to another node; if the node where the virtual machine was located before the migration happens to be the owner node of the lock resource associated with the virtual machine image file, the owner node and the virtual machine will After the migration, the nodes that open the image file are different nodes, so that the subsequent lock requests of the virtual machine will be sent to the owner node through the network; because the virtual machine frequently operates on the image file, the lock request will be transmitted to the owner node through the network. Increase the delay of virtual machine locking and computing resource overhead, resulting in a decline in the read and write performance of the virtual machine; at the same time, if the network between the node where the virtual machine is located and the owner node is unreachable, it will cause the virtual machine to The file lock request is suspended, so that the virtual machine cannot obtain the operation permission on the image file, resulting in a decrease in the availability of the file system and the virtual machine

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