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This makes it possible for automated-upload tools (like drop-upload and magic-folders) to be told when there are "enough" servers connected for uploads to be successful. This should help prevent the pathological case where the tools attempt to upload files immediately after node startup (or before the user turns on their wifi connection), and the node stores all the shares on itself. This new notification is single-shot and edge-triggered: when it fires, you know that, at some point in the past, the node *was* connected to at least $threshold servers. However you might have lost several connections since then. The user might turn off wifi after this fires, causing all connections to be dropped. In the long run, this API will change: clients will receive continuous notifications about servers coming and going, and tools like magic-folder should refrain from uploading during periods of insufficient connection. It might be as simple as checking the size of the connected server list when a periodic timer goes off, or something more responsive like an edge-triggered "upload as soon as you can" observer.
Tahoe-LAFS
Tahoe-LAFS is a Free and Open decentralized cloud storage system. It distributes your data across multiple servers. Even if some of the servers fail or are taken over by an attacker, the entire file store continues to function correctly, preserving your privacy and security.
For full documentation, please see http://tahoe-lafs.readthedocs.org/en/latest/ .
INSTALLING
Pre-packaged versions are available for several operating systems:
- Debian and Ubuntu users can
apt-get install tahoe-lafs - NixOS, NetBSD (pkgsrc), ArchLinux, Slackware, and Gentoo have packages available, see OSPackages for details
- Mac and Windows installers are in development.
If you don't use an OS package, you'll need Python 2.7 and pip. You may also need a C compiler, and the development headers for python, libffi, and OpenSSL. On a Debian-like system, use apt-get install build-essential python-dev libffi-dev libssl-dev python-virtualenv. On Windows, see docs/windows.rst.
Then, to install the most recent release, just run:
pip install tahoe-lafs
To install from source (either so you can hack on it, or just to run pre-release code), you should create a virtualenv and install into that:
git clone https://github.com/tahoe-lafs/tahoe-lafs.gitcd tahoe-lafsvirtualenv venvvenv/bin/pip install --editable .venv/bin/tahoe --version
To run the unit test suite:
tox
For more detailed instructions, read docs/INSTALL.rst .
Once tahoe --version works, see docs/running.rst to learn how to set up your first Tahoe-LAFS node.
LICENCE
Copyright 2006-2016 The Tahoe-LAFS Software Foundation
You may use this package under the GNU General Public License, version 2 or, at your option, any later version. You may use this package under the Transitive Grace Period Public Licence, version 1.0, or at your option, any later version. (You may choose to use this package under the terms of either licence, at your option.) See the file COPYING.GPL for the terms of the GNU General Public License, version 2. See the file COPYING.TGPPL for the terms of the Transitive Grace Period Public Licence, version 1.0.
See TGPPL.PDF for why the TGPPL exists, graphically illustrated on three slides.