Data access method for making asynchronous request to block device

Abstract

A data access method for making an asynchronous request to a block device is adapted to access a block device in a server end and perform corresponding processing according to a plurality of data access requests. The data access method includes the steps. A current request is received from a client. A virtual device of the block device is invoked. The current request is compared with a request queue storing a plurality of requests to be processed. The requests to be processed are selected from the request queue according to an access address of the current request. A request merging program is performed on the requests to be processed with adjacent access addresses and the current request to generate a merged request. The merged request is submitted to the request queue. The requests having low access capacities is merged, so as to improve the access efficiency of the block device.

Dependencies are inferred from the claim text.