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Published byJulius Charles Byrd Modified over 9 years ago
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WheelFS
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Agenda Introduction Background Feature System Architecture Design and Details Conclusion
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Introduction Created in the PDOS group at MIT Past Projects in PDOS: –Chord –Grid
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Agenda Introduction Background Feature System Architecture Design and Details Conclusion
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Background Difficulties in WAN –High latency –Low bandwidth –Failure Trade-offs MUST be made –Consistency –Availability –Performance
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Agenda Introduction Background Feature System Architecture Design and Details Conclusion
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Features POSIX file system API support Consistency control Replication control Swarming reads Timeout control Security // 更通俗易懂,或者一目了然
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Agenda Introduction Background Feature System Architecture Design and Details Conclusion
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System Architecture // 简单说几点(基本是 Basic Design ,说清 楚 ID ,文件怎么放)
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System Architecture (Cont.) // 来张图
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Agenda Introduction Background Feature System Architecture Design and Details Conclusion
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Design and Details // 更细节点的东西,看着办
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Agenda Introduction Background Feature System Architecture Design and Details Conclusion
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// 看看有什么要说的,没有就砍掉
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Introduction Developed by MIT CSAIL PDOS group FUSE-based DFS Appears as a tree of named directory Offers flexible wild-area storage Gives apps control via semantic cues
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Basic Design Three basic building blocks –Storage servers –Clients –Configuration servers
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Basic Design(Internal) Each file and dir has a unique numeric ID Each participation node also has a ID Node determine responsibility use CH
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Consistent Hashing(like chord)
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谢谢
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