Distributed lock resource control authority transferring method and device of mirror image document
An image file and resource control technology, applied in the field of server virtualization, can solve problems such as the decline of virtual machine read and write performance, the decline of file system and virtual machine availability, the increase of virtual machine locking delay and computing resource overhead, etc. Reduce the overhead of computing resources, reduce latency, and avoid the effect of degrading read and write performance
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[0032] Unlike the prior art, when the virtual machine is migrated, the virtual machine is only migrated from the source node where the virtual machine runs to the destination node. In the embodiment of the present application, when the virtual machine is migrated, if the owner node of the virtual machine image file is If the source node of the virtual machine migration is the same node, the owner is also migrated to the destination node along with the virtual machine, so that after the virtual machine is migrated, the node where it is located and the owner node corresponding to the image file are still on the same node; When the virtual machine operates on the image file, it does not need to send a lock request to the owner node through the network, but interacts with the owner by calling the node kernel program, thereby avoiding when the node where the virtual machine is located is different from the owner node and the network between the two The problem of reduced availability...
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