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docs: not-quite-final version of relnotes.txt for tahoe-1.3.0

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ANNOUNCING Allmydata.org "Tahoe", the Least-Authority Filesystem, v1.2 still-not-actually-ANNOUNCING-yet Allmydata.org "Tahoe", the Least-Authority Filesystem, v1.3
We are pleased to announce the release of version 1.2.0 of the "Tahoe" We are pleased to announce the release of version 1.3.0 of "Tahoe", the
Least Authority Filesystem. Least Authority Filesystem.
The "Tahoe" Least Authority Filesystem is a secure, decentralized, Tahoe-LAFS is a secure, decentralized, fault-tolerant filesystem. All
fault-tolerant filesystem. All of the source code is available under of the source code is available under a choice of two Free Software,
a Free Software, Open Source licence (or two). Open Source licences.
This filesystem is encrypted and distributed over multiple peers in This filesystem is encrypted and distributed over multiple peers in
such a way it continues to function even when some of the peers are such a way it continues to function even when some of the peers are
unavailable, malfunctioning, or malicious. unavailable, malfunctioning, or malicious.
A one-page explanation of the security and fault-tolerance properties Here is the one-page explanation of the security and fault-tolerance
that it offers is visible at: properties that it offers:
http://allmydata.org/source/tahoe/trunk/docs/about.html http://allmydata.org/source/tahoe/trunk/docs/about.html
This is the successor to v1.2, which was released July 21, 2008 [1].
This is a major new release, adding a repairer, an efficient backup
command, support for large files, an (S)FTP server, and much more.
This is the successor to Allmydata.org "Tahoe" Least Authority See the NEWS file [2] and the known_issues.txt file [3] for more
Filesystem v1.1, which was released June 11, 2008 [1]. This release information.
fixes a security issue in Tahoe v1.1, fixes a few small issues in the
web interface, adds a "check health" operation for mutable files, and
adds logging/operations/deployment improvements.
See the known_issues.txt file [2] and the NEWS file [3] for details. In addition to the many new features of Tahoe itself, a handful of
related projects have sprung up, including Tahoe frontends for Windows
and Macintosh, two front-ends written in JavaScript, a Tahoe plugin for
duplicity, a Tahoe plugin for TiddlyWiki, a project to create a new
backup tool, and three incomplete Tahoe frontends for FUSE. See Related
Projects on the wiki: [4].
COMPATIBILITY COMPATIBILITY
The version 1 branch of Tahoe is used as the basis of the consumer The version 1 branch of Tahoe is the basis of the consumer backup
backup product from Allmydata, Inc. -- http://allmydata.com . product from Allmydata, Inc. -- http://allmydata.com .
Tahoe v1.2 is fully compatible with Tahoe v1.0. v1.2 clients produce Tahoe v1.3 is fully compatible with Tahoe v1 branch. v1.3 clients
files which can be read by v1.0 clients. v1.2 clients can read files produce files which can be read by clients of all versions back to v1.0
produced by clients of all versions >= v0.8. v1.2 servers can serve (unless the file is too large -- greater than 12 GiB with default
v1.0 clients and v1.2 clients can use v1.0 servers. configuration). v1.3 clients can read files produced by clients of all
versions since v1.0. v1.3 servers can serve clients of all versions
back to v1.0 and v1.3 clients can use servers of all versions back to
v1.0 (but can't upload large files to them).
This is the third release in the version 1 series. We believe that This is the fourth release in the version 1 series. We believe that
this version of Tahoe is stable enough to rely on as a permanent store this version of Tahoe is stable enough to rely on as a permanent store
of valuable data. The version 1 branch of Tahoe will be actively of valuable data. The version 1 branch of Tahoe will be actively
supported and maintained for the forseeable future, and future supported and maintained for the forseeable future, and future versions
versions of Tahoe will retain the ability to read files and of Tahoe will retain the ability to read files and directories produced
directories produced by Tahoe v1 for the forseeable future. by Tahoe v1 for the forseeable future.
WHAT IS IT GOOD FOR? WHAT IS IT GOOD FOR?
With Tahoe, you can distribute your filesystem across a set of With Tahoe, you can distribute your filesystem across a set of
computers, such that if some of the computers fail or turn out to be computers, such that if some of the computers fail or turn out to be
malicious, the filesystem continues to work from the remaining malicious, the entire filesystem continues to be available, provided by
computers. You can also share your files with other users, using a the remaining computers. You can also share your files with other
cryptographic capability-based access control scheme. users, using a simple and flexible access control scheme.
Because this software is the product of less than two years of active Because this software is the product of less than three years of active
development, we do not categorically recommend it for the storage of development, we do not categorically recommend it as the sole
data which is extremely confidential or precious. However, we believe repository of data which is extremely confidential or precious.
that the combination of erasure coding, strong encryption, and careful However, we believe that erasure coding, strong encryption, Free/Open
engineering make Tahoe safer than common alternatives, such as RAID, Source Software and careful engineering make Tahoe safer than common
or traditional backup onto a remote server, removable drive, or tape. alternatives, such as RAID, removable drive, tape, or "on-line storage"
or "Cloud storage" systems.
This software comes with extensive unit tests [4], and there are no This software comes with extensive unit tests [5], and there are no
known security flaws which would compromise confidentiality or data known security flaws which would compromise confidentiality or data
integrity. (For all currently known issues please see the integrity. (For all currently known issues please see the
known_issues.txt file [2].) known_issues.txt file [2].)
This release of Tahoe is suitable for the "friendnet" use case [5] -- 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 it is easy to create a filesystem spread over the computers of you and
your friends so that you can share disk space and share files. your friends so that you can share disk space and files.
LICENCE LICENCE
You may use this package under the GNU General Public License, version 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" 2 or, at your option, any later version. See the file "COPYING.GPL"
[6] for the terms of the GNU General Public License, version 2. [7] for the terms of the GNU General Public License, version 2.
You may use this package under the Transitive Grace Period Public You may use this package under the Transitive Grace Period Public
Licence, version 1.0. The Transitive Grace Period Public Licence says Licence, version 1.0. The Transitive Grace Period Public Licence has
that you may distribute proprietary derived works of Tahoe without requirements similar to the GPL except that it allows you to wait for
releasing the source code of that derived work for up to twelve up to twelve months after you redistribute a derived work before
months, after which time you are obligated to release the source code releasing the source code of your derived work. See the file
of the derived work under the Transitive Grace Period Public "COPYING.TGPPL.html" [8] for the terms of the Transitive Grace Period
Licence. See the file "COPYING.TGPPL.html" [7] for the terms of the Public Licence, version 1.0.
Transitive Grace Period Public Licence, version 1.0.
(You may choose to use this package under the terms of either licence, (You may choose to use this package under the terms of either licence,
at your option.) at your option.)
@ -90,45 +98,54 @@ at your option.)
INSTALLATION INSTALLATION
Tahoe works on Linux, Mac OS X, Windows, Cygwin, and Solaris. For Tahoe works on Linux, Mac OS X, Windows, Cygwin, and Solaris, and
installation instructions please see "docs/install.html" [8]. probably most other systems which have a Python interpreter and a C/C++
compiler. Start with "docs/install.html" [9].
HACKING AND COMMUNITY HACKING AND COMMUNITY
Please join us on the mailing list [9] to discuss uses of Tahoe. Please join us on the mailing list [10]. Patches that extend and
Patches that extend and improve Tahoe are gratefully accepted -- the improve Tahoe are gratefully accepted -- the RoadMap page [11] shows
RoadMap page [10] shows the next improvements that we plan to make and the next improvements that we plan to make and CREDITS [12] lists the
CREDITS [11] lists the names of people who've contributed to the names of people who've contributed to the project. The wiki Dev page
project. The wiki Dev page [12] contains resources for hackers. [13] contains resources for hackers.
SPONSORSHIP SPONSORSHIP
Tahoe is sponsored by Allmydata, Inc. [13], a provider of commercial Tahoe is sponsored by Allmydata, Inc. [14], a provider of commercial
backup services. Allmydata, Inc. contributes hardware, software, backup services. Allmydata, Inc. contributes hardware, software,
ideas, bug reports, suggestions, demands, and money (employing several ideas, bug reports, suggestions, demands, and money (employing several
allmydata.org Tahoe hackers and instructing them to spend part of allmydata.org Tahoe hackers and instructing them to spend part of their
their work time on this free-software project). Also they distribute work time on this Free Software project). Also they award customized
customized t-shirts just for some of our favorite contributors. We t-shirts to hackers who find security flaws in Tahoe (see
are eternally grateful! http://hacktahoe.org ). Thank you to Allmydata, Inc. for their
generous and public-spirited support.
Zooko O'Whielacronx Zooko Wilcox-O'Hearn
on behalf of the allmydata.org team on behalf of the allmydata.org team
July 21, 2008
with special acknowledgment of Brian Warner, whose superb engineering
skills and dedication are primarily responsible for the Tahoe
implementation, and largely responsible for the Tahoe design as well,
not to mention most of the docs and many other things besides
February 11, 2009 (XXX HOPEFULLY)
Boulder, Colorado, USA Boulder, Colorado, USA
[1] http://allmydata.org/trac/tahoe/browser/relnotes.txt?rev=2716 [1] http://allmydata.org/trac/tahoe/browser/relnotes.txt?rev=2789
[2] http://allmydata.org/trac/tahoe/browser/docs/known_issues.txt [2] http://allmydata.org/trac/tahoe/browser/NEWS
[3] http://allmydata.org/trac/tahoe/browser/NEWS [3] http://allmydata.org/trac/tahoe/browser/docs/known_issues.txt
[4] http://allmydata.org/trac/tahoe/wiki/Dev [4] http://allmydata.org/trac/tahoe/wiki/RelatedProjects
[5] http://allmydata.org/trac/tahoe/wiki/UseCases [5] http://allmydata.org/trac/tahoe/wiki/Dev
[6] http://allmydata.org/trac/tahoe/browser/COPYING.GPL [6] http://allmydata.org/trac/tahoe/wiki/UseCases
[7] http://allmydata.org/source/tahoe/trunk/COPYING.TGPPL.html [7] http://allmydata.org/trac/tahoe/browser/COPYING.GPL
[8] http://allmydata.org/source/tahoe/trunk/docs/install.html [8] http://allmydata.org/source/tahoe/trunk/COPYING.TGPPL.html
[9] http://allmydata.org/cgi-bin/mailman/listinfo/tahoe-dev [9] http://allmydata.org/source/tahoe/trunk/docs/install.html
[10] http://allmydata.org/trac/tahoe/roadmap [10] http://allmydata.org/cgi-bin/mailman/listinfo/tahoe-dev
[11] http://allmydata.org/trac/tahoe/browser/CREDITS?rev=2677 [11] http://allmydata.org/trac/tahoe/roadmap
[12] http://allmydata.org/trac/tahoe/wiki/Dev [12] http://allmydata.org/trac/tahoe/browser/CREDITS?rev=2677
[13] http://allmydata.com [13] http://allmydata.org/trac/tahoe/wiki/Dev
[14] http://allmydata.com