STORAGE SYSTEM, STORAGE CONTROL DEVICE, AND CONTROL PROGRAM

摘要

PROBLEM TO BE SOLVED: To shorten time necessary for synchronization of meta-information on files in a distributed file system for managing the files by distributing file names.SOLUTION: When a file is created, a master name node performs synchronous processing for meta-information only with a slave name node, and does not perform the synchronous processing for the meta-information with a dummy name node. The master name node performs the synchronous processing for the meta-information with a dummy name node asynchronously with creation of the file. The same meta-information as the master name node is stored into the slave name node. The file is stored in: a data node in the same node as the slave name node; and a data node in the same node as the master name node.