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update the relnotes.txt for v0.3

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Zooko O'Whielacronx 2007-06-11 09:21:42 -07:00
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@ -1,15 +1,61 @@
Allmydata, Inc. [1], provider of the "Allmydata" consumer backup product, is NEW VERSION RELEASED
pleased to announce the first public release of "Tahoe", a secure,
distributed storage grid with a free-software licence. We are pleased to announce the release of version 0.3.0 of Allmydata-Tahoe, a
secure, decentralized storage grid under a free-software licence. This is
the follow-up to v0.2 which was released May 2, 2007 (see [1]).
Since then we've made several improvements, including:
* fix IP address configuration so that you can run a node behind a firewall
or NAT box (ticket #22)
* better packaging, build process, command-line, documentation (tickets #8,
#21, #23, #35, #46, #51)
* handle the loss of peers during the upload process by uploading to the
remaining peers (ticket #17)
* display size of files (ticket #37) (thanks to Faried Nawaz)
* private storage -- upload a file without publishing its decryption key
(ticket #33) (thanks to Faried Nawaz)
* add Merkle-Tree authentication on ciphertext and on plaintext (ticket #64)
* enable SSL encryption on the connection between web browser and node
(ticket #55)
* improved unit tests including memory-usage tests
* faster unit tests (ticket #20)
* upgrade to a newer version of Foolscap, the remote object protocol
For complete details (there are other improvements that are not in the above
list), see this web page which shows all ticket changes, repository checkins,
and wiki changes from May 3 to today: [2].
Allmydata-Tahoe v0.3 is incompatible with v0.2 due to the upgrade of Foolscap
and due to the new Merkle-Tree authentication.
WHAT IS IT GOOD FOR?
The source code that we are releasing is the current working prototype for The source code that we are releasing is the current working prototype for
Allmydata's next-generation product. This release is targeted at hackers who Allmydata's next-generation product. This release is targeted at hackers and
are willing to use a minimal, text-oriented web user interface. users who are willing to use a minimal, text-oriented web user interface.
This prototype is not recommended for storage of confidential data nor for This software is not yet recommended for storage of highly confidential data
data which is not otherwise backed up, but it already implements a functional nor for important data which is not otherwise backed up, but it is useful for
distributed storage grid and is useful for experimentation, prototyping, and experimentation, prototyping, and extension.
extension.
This release of Allmydata-Tahoe marks the first version which is be suitable
for Use Case #2: "groups of friends who want to share backup and
file-sharing" (see the wiki page "UseCases": [3]). It is easy to set up a
private grid which is securely shared among a specific, limited set of
friends. Files uploaded to this shared grid will be available to all
friends, even when some of the computers are unavailable.
LICENCE LICENCE
@ -22,11 +68,11 @@ this obligation for up to 12 months.
INSTALLATION INSTALLATION
This release of Tahoe works and passes all unit tests on Linux/x86, This release of Tahoe works on Linux/x86, Linux/amd64, Mac/Intel, Mac/PPC,
Linux/amd64, Mac/Intel, Mac/PPC, Windows-native, and Cygwin. Windows-native, and Cygwin.
To install, download the tarball [2], untar it, go into the resulting To install, download the tarball [4], untar it, go into the resulting
directory, and follow the directions in the README [3]. directory, and follow the directions in the README [5].
USAGE USAGE
@ -47,18 +93,18 @@ there, with download links, and forms to upload new files.
Other ways to access the filesystem are planned, as well as other structures Other ways to access the filesystem are planned, as well as other structures
than the single globally-shared namespace implemented by this release: please than the single globally-shared namespace implemented by this release: please
see the roadmap.txt [5] for some rough details. see the roadmap.txt [6] for some rough details.
HACKING AND COMMUNITY HACKING AND COMMUNITY
Please join the mailing list [4] to discuss the ideas behind Tahoe and Please join the mailing list [7] to discuss the ideas behind Tahoe and
extensions of and uses of Tahoe. Patches that extend and improve Tahoe are extensions of and uses of Tahoe. Patches that extend and improve Tahoe are
gratefully accepted -- roadmap.txt shows the next improvements that we plan gratefully accepted -- roadmap.txt shows the next improvements that we plan
to make. You can browse the revision control history, source code, and issue to make. You can browse the revision control history, source code, and issue
tracking at the Trac instance [6]. Please see the buildbot [7], which shows tracking at the Trac instance [8]. Please see the buildbot [9], which shows
how Tahoe builds and passes unit tests on each checkin, and the code coverage how Tahoe builds and passes unit tests on each checkin, and the code coverage
results [8] and percentage-covered graph [9], which show how much of the results [10] and percentage-covered graph [11], which show how much of the
Tahoe source code is currently exercised by the test suite. Tahoe source code is currently exercised by the test suite.
@ -79,8 +125,8 @@ peers, the file is reconstructed from the shares, and then decrypted.
A single distinct server called a "vdrive server" maintains a global mapping A single distinct server called a "vdrive server" maintains a global mapping
from pathnames/filenames to URIs. from pathnames/filenames to URIs.
We are well aware of the limitations of decentralization and scalability We are acutely aware of the limitations of decentralization and scalability
inherent in this prototype. In particular, the completely-connected property inherent in this version. In particular, the completely-connected property
of the grid and the requirement of a single distinct introducer and vdrive of the grid and the requirement of a single distinct introducer and vdrive
server limits the possible size of the grid. We have plans to loosen these server limits the possible size of the grid. We have plans to loosen these
limitations (see roadmap.txt). Currently it should be noted that the grid limitations (see roadmap.txt). Currently it should be noted that the grid
@ -94,30 +140,46 @@ public test grid.
SOFTWARE ARCHITECTURE SOFTWARE ARCHITECTURE
Tahoe is a "from the ground-up" rewrite, inspired by Allmydata's existing Tahoe is a "from the ground-up" rewrite, inspired by Allmydata's existing
consumer backup service. It is primarily written in Python. consumer backup service. It is primarily written in the Python programming
language.
Tahoe is based on the Foolscap library [10] which provides a remote object Tahoe is based on the Foolscap library [12] which provides a remote object
protocol inspired by the capability-secure "E" programming language [11]. protocol inspired by the capability-secure "E" programming language [13].
Foolscap allows us to express the intended behavior of the distributed grid Foolscap allows us to express the intended behavior of the distributed grid
directly in object-oriented terms while relying on a well-engineered, secure directly in object-oriented terms while relying on a well-engineered, secure
transport layer. transport layer.
The underlying networking is provided by the Twisted library [12]. The network layer is provided by the Twisted library [14]. Computationally
Computationally intensive operations are performed in native compiled code, intensive operations are performed in native compiled code, such as the
such as the "zfec" library for fast erasure coding (also available "zfec" library for fast erasure coding (also available separately: [15]).
separately: [13]).
Tahoe is sponsored by Allmydata, Inc. [16], a provider of consumer backup
services. Allmydata, Inc. contributes hardware, software, ideas, bug
reports, suggestions, demands, and money (employing several Allmydata-Tahoe
hackers and allowing them to spend part of their work time on the
next-generation, free-software project). We are eternally grateful!
[1] http://allmydata.com Zooko O'Whielacronx
[2] http://allmydata.org/source/tahoe/tahoe-0.2.0-0-UNSTABLE.tar.gz on behalf of the Allmydata-Tahoe team
[3] http://allmydata.org/trac/tahoe/browser/README June 11, 2007
[4] http://allmydata.org/cgi-bin/mailman/listinfo/tahoe-dev San Francisco
[5] http://allmydata.org/trac/tahoe/browser/roadmap.txt
[6] http://allmydata.org/trac/tahoe
[7] http://allmydata.org/buildbot [1] http://allmydata.org/trac/tahoe/browser/relnotes.txt?rev=686
[8] http://allmydata.org/tahoe-figleaf/figleaf/ [2] http://allmydata.org/trac/tahoe/timeline?from=06%2F11%2F2007&daysback=39&changeset=on&milestone=on&ticket=on&wiki=on&update=Update
[9] http://allmydata.org/tahoe-figleaf-graph/hanford.allmydata.com-tahoe_figleaf.html [3] http://allmydata.org/trac/tahoe/wiki/UseCases
[10] http://twistedmatrix.com/trac/wiki/FoolsCap [4] http://allmydata.org/source/tahoe/tahoe-0.3.tar.gz
[11] http://erights.org/ [5] http://allmydata.org/trac/tahoe/browser/README?rev=748
[12] http://twistedmatrix.com/ [6] http://allmydata.org/trac/tahoe/browser/roadmap.txt
[13] http://allmydata.org/trac/tahoe/browser/src/zfec [7] http://allmydata.org/cgi-bin/mailman/listinfo/tahoe-dev
[8] http://allmydata.org/trac/tahoe
[9] http://allmydata.org/buildbot
[10] http://allmydata.org/tahoe-figleaf/figleaf/
[11] http://allmydata.org/tahoe-figleaf-graph/hanford.allmydata.com-tahoe_figleaf.html
[12] http://twistedmatrix.com/trac/wiki/FoolsCap
[13] http://erights.org/
[14] http://twistedmatrix.com/
[15] http://allmydata.org/trac/tahoe/browser/src/zfec
[16] http://allmydata.com