ANNOUNCING Tahoe, the Lofty-Atmospheric Filesystem, v1.5

Discussion in 'Python' started by Zooko Wilcox-O'Hearn, Aug 2, 2009.

  1. Dear people of python-list:

    Python is our preferred programming language for the Tahoe-LAFS
    project. We use C/C++ extension modules for the CPU-intensive parts,
    and we interoperate with many languages through the RESTful web API,
    but the core code is 100% Python.

    Regards,

    Zooko
    ---
    The Tahoe-LAFS team is pleased to announce the immediate availability of
    version 1.5 of Tahoe, the Lofty Atmospheric File System.

    Tahoe-LAFS is the first cloud storage technology which offers security
    and privacy in the sense that the cloud storage service provider itself
    can't read or alter your data. Here is the one-page explanation of
    its unique security and fault-tolerance properties:

    http://allmydata.org/source/tahoe/trunk/docs/about.html

    This release is the successor to v1.4.1, which was released April 13,
    2009 [1]. This is a major new release, improving the user interface and
    performance and fixing a few bugs, and adding ports to OpenBSD, NetBSD,
    ArchLinux, NixOS, and embedded systems built on ARM CPUs. See the NEWS
    file [2] for more information.

    In addition to the functionality of Tahoe-LAFS itself, a crop of related
    projects have sprung up to extend it and to integrate it into operating
    systems and applications. These include frontends for Windows,
    Macintosh, JavaScript, and iPhone, and plugins for duplicity, bzr,
    Hadoop, and TiddlyWiki, and more. See the Related Projects page on the
    wiki [3].


    COMPATIBILITY

    Version 1.5 is fully compatible with the version 1 series of
    Tahoe-LAFS. Files written by v1.5 clients can be read by clients of all
    versions back to v1.0. v1.5 clients can read files produced by clients
    of all versions since v1.0. v1.5 servers can serve clients of all
    versions back to v1.0 and v1.5 clients can use servers of all versions
    back to v1.0.

    This is the sixth release in the version 1 series. The version 1 series
    of Tahoe-LAFS will be actively supported and maintained for the
    forseeable future, and future versions of Tahoe-LAFS will retain the
    ability to read and write files compatible with Tahoe-LAFS v1.

    The version 1 series of Tahoe-LAFS is the basis of the consumer backup
    product from Allmydata, Inc. -- http://allmydata.com .


    WHAT IS IT GOOD FOR?

    With Tahoe-LAFS, you can distribute your filesystem across a set of
    servers, such that if some of them fail or even turn out to be
    malicious, the entire filesystem continues to be available. You can
    share your files with other users, using a simple and flexible access
    control scheme.

    We believe that the combination of erasure coding, strong encryption,
    Free/Open Source Software and careful engineering make Tahoe-LAFS safer
    than RAID, removable drive, tape, on-line backup or other Cloud storage
    systems.

    This software comes with extensive tests, and there are no known
    security flaws which would compromise confidentiality or data integrity
    in typical use. (For all currently known issues please see the
    known_issues.txt file [4].)


    LICENCE

    You may use this package under the GNU General Public License, version 2
    or, at your option, any later version. See the file "COPYING.GPL" [5]
    for the terms of the GNU General Public License, version 2.

    You may use this package under the Transitive Grace Period Public
    Licence, version 1 or, at your option, any later version. (The
    Transitive Grace Period Public Licence has requirements similar to the
    GPL except that it allows you to wait for up to twelve months after you
    redistribute a derived work before releasing the source code of your
    derived work.) See the file "COPYING.TGPPL.html" [6] for the terms of
    the Transitive Grace Period Public Licence, version 1.

    (You may choose to use this package under the terms of either licence,
    at your option.)


    INSTALLATION

    Tahoe-LAFS works on Linux, Mac OS X, Windows, Cygwin, Solaris, *BSD, and
    probably most other systems. Start with "docs/install.html" [7].


    HACKING AND COMMUNITY

    Please join us on the mailing list [8]. Patches are gratefully accepted
    -- the RoadMap page [9] shows the next improvements that we plan to make
    and CREDITS [10] lists the names of people who've contributed to the
    project. The Dev page [11] contains resources for hackers.


    SPONSORSHIP

    Tahoe-LAFS was originally developed thanks to the sponsorship of
    Allmydata, Inc. [12], a provider of commercial backup services.
    Allmydata, Inc. created the Tahoe-LAFS project and contributed hardware,
    software, ideas, bug reports, suggestions, demands, and money (employing
    several Tahoe-LAFS hackers and instructing them to spend part of their
    work time on this Free Software project). Also they awarded customized
    t-shirts to hackers who found security flaws in Tahoe-LAFS (see
    http://hacktahoe.org ). After discontinuing funding of Tahoe-LAFS R&D in
    early 2009, Allmydata, Inc. has continued to provide servers, co-lo
    space and bandwidth to the open source project. Thank you to Allmydata,
    Inc. for their generous and public-spirited support.

    This is the second release of Tahoe-LAFS which was created solely as a
    labor of love by volunteers; developer time is no longer funded by
    allmydata.com (see [13] for details).

    Zooko Wilcox-O'Hearn
    on behalf of the Tahoe-LAFS team

    Special acknowledgment goes to Brian Warner, whose superb engineering
    skills and dedication are primarily responsible for the Tahoe
    implementation, and significantly responsible for the Tahoe design as
    well, not to mention most of the docs and tests. Tahoe-LAFS wouldn't
    exist without him.

    August 1, 2009
    Boulder, Colorado, USA

    P.S. Just kidding about that acronym. "LAFS" actually stands for
    "Lightweight Authorization File System". Or possibly for
    "Least-Authority File System". There is no truth to the rumour that it
    actually stands for "Long-lived Axe-tolerant File System".

    [1] http://allmydata.org/trac/tahoe/browser/relnotes.txt?rev=3853
    [2] http://allmydata.org/trac/tahoe/browser/NEWS?rev=4033
    [3] http://allmydata.org/trac/tahoe/wiki/RelatedProjects
    [4] http://allmydata.org/trac/tahoe/browser/docs/known_issues.txt
    [5] http://allmydata.org/trac/tahoe/browser/COPYING.GPL
    [6] http://allmydata.org/source/tahoe/trunk/COPYING.TGPPL.html
    [7] http://allmydata.org/source/tahoe/trunk/docs/install.html
    [8] http://allmydata.org/cgi-bin/mailman/listinfo/tahoe-dev
    [9] http://allmydata.org/trac/tahoe/roadmap
    [10] http://allmydata.org/trac/tahoe/browser/CREDITS?rev=4035
    [11] http://allmydata.org/trac/tahoe/wiki/Dev
    [12] http://allmydata.com
    [13] http://allmydata.org/pipermail/tahoe-dev/2009-March/001461.html
     
    Zooko Wilcox-O'Hearn, Aug 2, 2009
    #1
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