New Features
''''''''''''
-- The most significant new feature in this release is MDMF, which stands
- for "Medium Density Mutable Files". These are capable of providing more
- efficient access and update of parts of a file. To ensure compatibility
- with previous versions, MDMF is not yet the default format for mutable
- files. Memory usage of a gateway when uploading and downloading MDMF
- files may be higher than expected in this release. (`#393`_, `#1507`_)
+- The most significant new feature in this release is MDMF: "Medium-size
+ Distributed Mutable Files". Unlike standard SDMF files, these provide
+ efficient partial-access (reading and modifying small portions of the file
+ instead of the whole thing). MDMF is opt-in (it is not yet the default
+ format for mutable files), both to ensure compatibility with previous
+ versions, and because the algorithm does not yet meet memory-usage goals.
+ (`#393`_, `#1507`_)
+- A "blacklist" feature allows blocking access to specific files through
+ a particular gateway. See the "Access Blacklist" section of
+ `<docs/configuration.rst>`_ for more details. (`#1425`_)
- A "drop-upload" feature has been added, which allows you to upload
files to a Tahoe-LAFS directory just by writing them to a local
directory. This feature is experimental and should not be relied on
to store the only copy of valuable data. It is currently available
only on Linux. See `<docs/frontends/drop-upload.rst>`_ for documentation.
(`#1429`_)
-- A "blacklist" feature allows blocking access to specific files through
- a particular gateway. See the "Access Blacklist" section of
- `<docs/configuration.rst>`_ for more details. (`#1425`_)
- The timeline of immutable downloads can be viewed using a zoomable and
pannable JavaScript-based visualization. This is accessed using the
'timeline' link on the File Download Status page for the download, which
- Prior to Tahoe-LAFS v1.3, the configuration of some node options could
be specified using individual config files rather than via ``tahoe.cfg``.
These files now cause an error if present. (`#1385`_)
-- Storage servers now calculate their remaining space based on the
- filesystem containing the storage/shares/ directory. Previously they
- looked at the filesystem containing the storage/ directory. This allows
- storage/shares/, rather than storage/, to be a mount point or a symlink
- pointing to another filesystem. (`#1384`_)
-- 'tahoe cp xyz MUTABLE' will modify the existing mutable file instead of
+- Storage servers now calculate their remaining space based on the filesystem
+ containing the ``storage/shares/`` directory. Previously they looked at the
+ filesystem containing the ``storage/`` directory. This allows
+ ``storage/shares/``, rather than ``storage/``, to be a mount point or a
+ symlink pointing to another filesystem. (`#1384`_)
+- ``tahoe cp xyz MUTABLE`` will modify the existing mutable file instead of
creating a new one. (`#1304`_)
- The button for unlinking a file from its directory on a WUI directory
listing is now labelled "unlink" rather than "del". (`#1104`_)
- The security bugfix for the vulnerability allowing deletion of shares,
detailed in the news for v1.8.3 below, is also included in this
release. (`#1528`_)
-- Some cases of immutable upload, for example using the 'tahoe put' and
- 'tahoe cp' commands or SFTP, did not appear in the history of Recent
+- Some cases of immutable upload, for example using the ``tahoe put`` and
+ ``tahoe cp`` commands or SFTP, did not appear in the history of Recent
Uploads and Downloads. (`#1079`_)
- The memory footprint of the verifier has been reduced by serializing
block fetches. (`#1395`_)
-- Large immutable downloads are now a little faster than in v1.8.2 (about
+- Large immutable downloads are now a little faster than in v1.8.3 (about
5% on a fast network). (`#1268`_)
Packaging Changes
source tree, since they are now maintained as part of the official
Debian packages. (`#1454`_)
- The unmaintained FUSE plugins were removed from the source tree. See
- docs/frontends/FTP-and-SFTP.rst for how to mount a Tahoe filesystem on
+ ``docs/frontends/FTP-and-SFTP.rst`` for how to mount a Tahoe filesystem on
Unix via sshfs. (`#1409`_)
- The Tahoe licenses now give explicit permission to combine Tahoe-LAFS
with code distributed under the following additional open-source licenses
(any version of each):
+
* Academic Free License
* Apple Public Source License
* BitTorrent Open Source License
Compatibility and Dependencies
''''''''''''''''''''''''''''''
-- An incompatibility of zope.interface versions 3.6.4 and 3.6.5 with Nevow
- has been resolved. Tahoe-LAFS now requires an earlier or later version
- of zope.interface. (`#1435`_)
-- The Twisted dependency has been raised to version 10.1. This ensures
- that we no longer require pywin32 on Windows, that the new drop-upload
- feature has the required support from Twisted on Linux, and that it is
- never necessary to patch Twisted in order to use the FTP frontend.
- (`#1274`_, `#1429`_, `#1438`_)
+- To resolve an incompatibility between Nevow and zope.interface (versions
+ 3.6.3 and 3.6.4), Tahoe-LAFS now requires an earlier or later
+ version of zope.interface. (`#1435`_)
+- The Twisted dependency has been raised to version 10.1 to ensure we no
+ longer require pywin32 on Windows, the new drop-upload feature has the
+ required support from Twisted on Linux, and that it is never necessary to
+ patch Twisted in order to use the FTP frontend. (`#1274`_, `#1429`_,
+ `#1438`_)
- An explicit dependency on pyOpenSSL has been added, replacing the indirect
dependency via the "secure_connections" option of foolscap. (`#1383`_)
Minor Changes
'''''''''''''
-- When the '--version' or '--version-and-path' options to 'tahoe' were
- used and the version of a dependency could not be parsed, an unhelpful
- error message would be given. (`#1355`_, `#1388`_)
-- The tahoe_files munin plugin reported an incorrect count of the number of
- share files. (`#1391`_)
-- A ``man`` page has been added. (`#1420`_)
-- Nodes now emit "None" for percentiles with higher implied precision
- than the number of observations can support. Older stats gatherers
- will throw an exception if they gather stats from a new storage server
- and it sends a "None" for a percentile. (`#1392`_)
+- A ``man`` page has been added (`#1420`_). All other docs are in ReST
+ format.
+- The ``tahoe_files`` munin plugin reported an incorrect count of the number
+ of share files. (`#1391`_)
- Minor documentation updates: #627, #1104, #1225, #1297, #1342, #1404
-- Other minor changes: #636, #1366, #1412, #1344, #1347, #1359, #1389, #1441,
- #1474, #1503, #1507
+- Other minor changes: #636, #1355, #1363, #1366, #1388, #1392, #1412, #1344,
+ #1347, #1359, #1389, #1441, #1442, #1446, #1474, #1503
.. _`#393`: http://tahoe-lafs.org/trac/tahoe-lafs/ticket/393
.. _`#1079`: http://tahoe-lafs.org/trac/tahoe-lafs/ticket/1079
projects / tahoe-lafs / tahoe-lafs.git / commitdiff