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Storage Issues

Storage Issues. 09/19. Intelligence Storage. Last Meeting…. Mentioned about tags on files. Database-based file systems

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Storage Issues

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  1. Storage Issues 09/19

  2. Intelligence Storage

  3. Last Meeting… • Mentioned about tags on files. • Database-based file systems • Instead of, or in addition to, hierarchical structured management, files are identified by their characteristics, like type of file, topic, author, or similar rich metadata. • Simple solution: soft link

  4. tag2find • tag2find helps users to find everything on their desktop by simply using tags. • a tag is simply a label or keyword that describes the file for making it easer to find. • www.tag2find.com/

  5. DBFS • Provided as a layer above a hierarchy based file system. • holds references to files on the underlying hierarchy based file system. • Part of OnneGorter's Master Thesis at the University of Twente • Last modified: 2004 • http://dbfs.sourceforge.net/

  6. TagFS • https://github.com/marook/tagfs/wiki • Written in Python. • Directories are tagged through a simple text file '.tag’. • TagFS - "Tag Semantics for Hierarchical File Systems" paper by Stephan Bloehdorn and Max Völkel, 2006

  7. Tagsistant • A semantic file system. • a new way to organize files on disk, using tags in place of directories. • Queries looks like: • ntu/AND/csie/AND/iis • food/OR/drink • Relationship between tags • “include” • “is equivalent” • http://www.tagsistant.net/

  8. Others • dhtfs • Written in Python • Last release 2007. • Windows Vista/7 • Can only tag photos. • TaggedFrog • http://lunarfrog.com/taggedfrog/ • Labelfs • “labels can also be labeled with other labels” • http://code.google.com/p/labelfs/

  9. Short Summary • To cope with current hierarchy based file system. • Most tag file systems are layers between user and underlying file system. • Tags are stored independently with file. • Current tag file system works on single machine. • what if we apply tags to cloud?

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