Storage issues
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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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Storage issues

Storage Issues

09/19


Intelligence storage

Intelligence Storage


Last meeting

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


Tag2find

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/


Storage issues

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/


Tagfs

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


Tagsistant

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/


Others

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/


Short summary

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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