tahoe-lafs/relnotes.txt

ANNOUNCING Tahoe, the Least-Authority File System, v1.8.0c3

The Tahoe-LAFS team is pleased to announce the immediate
availability of version 1.8.0c3 of Tahoe-LAFS, an extremely
reliable distributed storage system.

Tahoe-LAFS is the first distributed storage system which
offers "provider-independent security"—meaning that not even
the operators of your storage servers can read or alter your
data without your consent. Here is the one-page explanation of
its unique security and fault-tolerance properties:

http://tahoe-lafs.org/source/tahoe/trunk/docs/about.html

The current stable release of Tahoe-LAFS is v1.7.1, which was
released July 18, 2010 [1].

v1.8.0c3 is leading up to the v1.8.0 release, featuring
including fast and fault-tolerant downloads and better
Windows support. See the NEWS file [2] for details. v1.8.0c3
fixes performance regressions for some server
layouts. v.1.80c2 corrected some minor regressions in
download status pages.  v1.8.0c1 corrected regressions in
compatibility with other versions, and in downloads using the
Range header, that were introduced in v1.8.0β. If no further
regressions or critical bugs are discovered, we will release
v1.8.0 final on approximately September 11, 2010.


WHAT IS IT GOOD FOR?

With Tahoe-LAFS, you distribute your filesystem across
multiple servers, and even if some of the servers are
compromised by by an attacker, the entire filesystem continues
to work correctly, and continues to preserve your privacy and
security. You can easily share specific files and directories
with other people.

In addition to the core storage system itself, volunteers
have built other projects on top of Tahoe-LAFS and have
integrated Tahoe-LAFS with existing systems, including
Windows, JavaScript, iPhone, Android, Hadoop, Flume, Django,
Puppet, bzr, mercurial, perforce, duplicity, TiddlyWiki, and
more. See the Related Projects page on the wiki [3].

We believe that strong cryptography, Free and Open Source
Software, erasure coding, and principled engineering practices
make Tahoe-LAFS safer than RAID, removable drive, tape,
on-line backup or "cloud storage" systems.

This software is developed under test-driven development, and
there are no known bugs or security flaws which would
compromise confidentiality or data integrity under recommended
use. (For all currently known issues please see the
known_issues.txt file [4].)


COMPATIBILITY

This release is fully compatible with the version 1 series of
Tahoe-LAFS. Clients from this release can write files and
directories in the format used by clients of all versions back
to v1.0 (which was released March 25, 2008). Clients from this
release can read files and directories produced by clients of
all versions since v1.0. Servers from this release can serve
clients of all versions back to v1.0 and clients from this
release can use servers of all versions back to v1.0.

This is the eleventh release in the version 1 series. This
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 this series.


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
delay 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/quickstart.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 by Allmydata, Inc., a
provider of commercial backup services. After discontinuing
funding of Tahoe-LAFS R&D in early 2009, they have continued
to provide servers, bandwidth, small personal gifts as tokens
of appreciation, and bug reports. Thank you to Allmydata,
Inc. for their generous and public-spirited support.

Google, Inc. is sponsoring Tahoe-LAFS development as part of
the Google Summer of Code 2010. Google suggested that we
should apply for the Summer of Code program, and when we did
they generously awarded four sponsorships to students from
around the world to hack on Tahoe-LAFS this summer. Thank you
to Google, Inc. for their generous and public-spirited
support.


HACK TAHOE-LAFS!

If you can find a security flaw in Tahoe-LAFS which is serious
enough that feel compelled to warn our users and issue a fix,
then we will award you with a customized t-shirts with your
exploit printed on it and add you to the "Hack Tahoe-LAFS Hall
Of Fame" [12].


ACKNOWLEDGEMENTS

This is the fifth release of Tahoe-LAFS to be created solely
as a labor of love by volunteers. Thank you very much to the
team of "hackers in the public interest" who make Tahoe-LAFS
possible.

David-Sarah Hopwood and Zooko Wilcox-O'Hearn
on behalf of the Tahoe-LAFS team

September 2, 2010
Rainhill, Merseyside, UK and Boulder, Colorado, USA


[1] http://tahoe-lafs.org/trac/tahoe/browser/relnotes.txt?rev=4579
[2] http://tahoe-lafs.org/trac/tahoe/browser/NEWS?rev=4692
[3] http://tahoe-lafs.org/trac/tahoe/wiki/RelatedProjects
[4] http://tahoe-lafs.org/trac/tahoe/browser/docs/known_issues.txt
[5] http://tahoe-lafs.org/trac/tahoe/browser/COPYING.GPL
[6] http://tahoe-lafs.org/source/tahoe/trunk/COPYING.TGPPL.html
[7] http://tahoe-lafs.org/source/tahoe/trunk/docs/quickstart.html
[8] http://tahoe-lafs.org/cgi-bin/mailman/listinfo/tahoe-dev
[9] http://tahoe-lafs.org/trac/tahoe/roadmap
[10] http://tahoe-lafs.org/trac/tahoe/browser/CREDITS?rev=4591
[11] http://tahoe-lafs.org/trac/tahoe/wiki/Dev
[12] http://tahoe-lafs.org/hacktahoelafs/