ANNOUNCING Tahoe-LAFS v1.4

Discussion in 'Python' started by zooko, Apr 14, 2009.

  1. zooko

    zooko Guest

    ANNOUNCING Tahoe, the Least-Authority Filesystem, v1.4

    The allmydata.org team is pleased to announce the release of version
    1.4.1 of "Tahoe", the Lightweight-Authorization Filesystem. This is the
    first release of Tahoe-LAFS which was created solely as a labor of love
    by volunteers -- it is no longer funded by allmydata.com (see [1] for
    details).

    Tahoe-LAFS is a secure, decentralized, fault-tolerant cloud storage
    system. All of the source code is publicly available under Free
    Software, Open Source licences.

    This filesystem is distributed over multiple servers in such a way the
    filesystem continues to operate correctly even when some of the servers
    are unavailable, malfunctioning, or malicious. Here is the one-page
    explanation of Tahoe's unique security and fault-tolerance properties:

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

    This is the successor to Tahoe-LAFS v1.3, which was released February
    13, 2009 [2]. This is a major new release, adding garbage collection,
    improved diagnostics and error-reporting, and fixing a critical
    performance problem when downloading large (many GB) files.

    See the NEWS file [3] and the known_issues.txt file [4] for more
    information.

    Besides the Tahoe core, a crop of related projects have sprung up,
    including frontends for Windows and Macintosh, two front-ends written in
    JavaScript, a Ruby interface, a plugin for duplicity, a plugin for
    TiddlyWiki, a new backup tool named "GridBackup", CIFS/SMB integration,
    an iPhone app, and three incomplete frontends for FUSE. See the Related
    Projects page on the wiki: [5].


    COMPATIBILITY

    Tahoe v1.4 is fully compatible with the version 1 series of Tahoe. Files
    written by v1.4 clients can be read by clients of all versions back to
    v1.0. v1.4 clients can read files produced by clients of all versions
    since
    v1.0. v1.4 servers can serve clients of all versions back to v1.0
    and v1.4
    clients can use servers of all versions back to v1.0.

    This is the fifth release in the version 1 series. The version 1 series
    of Tahoe will be actively supported and maintained for the forseeable
    future, and future versions of Tahoe will retain the ability to read
    files and directories produced by Tahoe v1 for the forseeable future.

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


    WHAT IS IT GOOD FOR?

    With Tahoe, 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.

    Because this software is new, we do not categorically recommend it as
    the sole repository of data which is extremely confidential or
    precious. However, we believe that erasure coding, strong encryption,
    Free/Open Source Software and careful engineering make Tahoe safer than
    common alternatives, such as RAID, removable drive, tape, "on-line
    storage" or "Cloud storage" systems.

    This software comes with extensive tests, and there are no known
    security flaws which would compromise confidentiality or data integrity.
    (For all currently known issues please see the known_issues.txt file
    [3].)

    This release of Tahoe is suitable for the "friendnet" use case [6] --
    it is easy to create a filesystem spread over the computers of you and
    your friends so that you can share disk space and files.


    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"
    [7] 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" [8] 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 works on Linux, Mac OS X, Windows, Cygwin, and Solaris, and
    probably most other systems. Start with "docs/install.html" [9].


    HACKING AND COMMUNITY

    Please join us on the mailing list [10]. Patches are gratefully
    accepted -- the RoadMap page [11] shows the next improvements that we
    plan to make and CREDITS [12] lists the names of people who've
    contributed to the project. The wiki Dev page [13] contains resources
    for hackers.


    SPONSORSHIP

    Tahoe was originally developed thanks to the sponsorship of Allmydata,
    Inc. [14], a provider of commercial backup services. Allmydata,
    Inc. created the Tahoe project, and contributed hardware, software,
    ideas, bug reports, suggestions, demands, and money (employing several
    Tahoe 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 find security flaws in Tahoe (see http://hacktahoe.org
    ). After discontinuing funding of Tahoe 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.


    Zooko Wilcox-O'Hearn
    on behalf of the allmydata.org 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 and many other things
    besides.

    April 13, 2009
    Boulder, Colorado, USA

    [1] http://allmydata.org/pipermail/tahoe-dev/2009-March/001461.html
    [2] http://allmydata.org/trac/tahoe/browser/relnotes.txt?rev=3620
    [3] http://allmydata.org/trac/tahoe/browser/NEWS?rev=3835
    [4] http://allmydata.org/trac/tahoe/browser/docs/known_issues.txt
    [5] http://allmydata.org/trac/tahoe/wiki/RelatedProjects
    [6] http://allmydata.org/trac/tahoe/wiki/UseCases
    [7] http://allmydata.org/trac/tahoe/browser/COPYING.GPL
    [8] http://allmydata.org/source/tahoe/trunk/COPYING.TGPPL.html
    [9] http://allmydata.org/source/tahoe/trunk/docs/install.html
    [10] http://allmydata.org/cgi-bin/mailman/listinfo/tahoe-dev
    [11] http://allmydata.org/trac/tahoe/roadmap
    [12] http://allmydata.org/trac/tahoe/browser/CREDITS?rev=3758
    [13] http://allmydata.org/trac/tahoe/wiki/Dev
    [14] http://allmydata.com


    ---
    Tahoe, the Least-Authority Filesystem -- http://allmydata.org
    store your data: $10/month -- http://allmydata.com/?tracking=zsig
    I am available for work -- http://zooko.com/résumé.html
     
    zooko, Apr 14, 2009
    #1
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