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Fragmentation prevention in the cloud file system for P2P file sharing using smart devices

More and more network services integrate the cloud platform to deliver their services. In order to accelerate the data sharing among users, data are usually divided and encapsulated into small pieces before delivery. However, the cloud file system enlarges the basic block size for maximizing the access throughput. This conflict between network transmission and cloud file system may induce high fragmentation in the cloud file system. In this paper, we propose one minimum block defragmentation mechanism (MBDM) to avoid any fragmentation in the cloud file system even if data are exchanged piece by piece. Based on our experiments, the proposed MBDM save 36% time and 46% energy consumption than the traditional BitTorrent (BT) service.