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Merge pull request #300 from ThomasWaldmann/attic-changes

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include a list of major changes compared to attic into the README, fixes #224
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README.rst
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@ -132,15 +132,33 @@ Borg is a fork of `Attic`_ and maintained by "`The Borg collective`_".
.. _The Borg collective: https://borgbackup.readthedocs.org/authors.html
Read `issue #1 <https://github.com/borgbackup/borg/issues/1>`_ about the initial
considerations regarding project goals and policy of the Borg project.
Differences between Attic and Borg
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
BORG IS NOT COMPATIBLE WITH ORIGINAL ATTIC.
EXPECT THAT WE WILL BREAK COMPATIBILITY REPEATEDLY WHEN MAJOR RELEASE NUMBER
CHANGES (like when going from 0.x.y to 1.0.0). Please read the
`ChangeLog`_ (or ``CHANGES.rst`` in the source distribution) for more
Here's a (incomplete) list of some major changes:
* more open, faster paced development (see `issue #1 <https://github.com/borgbackup/borg/issues/1>`_)
* lots of attic issues fixed (see `issue #5 <https://github.com/borgbackup/borg/issues/5>`_)
* less chunk management overhead via --chunker-params option (less memory and disk usage)
* faster remote cache resync (useful when backing up multiple machines into same repo)
* compression: no, lz4, zlib or lzma compression, adjustable compression levels
* repokey replaces problematic passphrase mode (you can't change the passphrase nor the pbkdf2 iteration count in "passphrase" mode)
* simple sparse file support, great for virtual machine disk files
* can read special files (e.g. block devices) or from stdin, write to stdout
* mkdir-based locking is more compatible than attic's posix locking
* uses fadvise to not spoil / blow up the fs cache
* better error messages / exception handling
* better output for verbose mode, progress indication
* tested on misc. Linux systems, 32 and 64bit, FreeBSD, OpenBSD, NetBSD, Mac OS X
Please read the `ChangeLog`_ (or ``CHANGES.rst`` in the source distribution) for more
information.
BORG IS NOT COMPATIBLE WITH ORIGINAL ATTIC (but there is a one-way conversion).
EXPECT THAT WE WILL BREAK COMPATIBILITY REPEATEDLY WHEN MAJOR RELEASE NUMBER
CHANGES (like when going from 0.x.y to 1.0.0).
NOT RELEASED DEVELOPMENT VERSIONS HAVE UNKNOWN COMPATIBILITY PROPERTIES.
THIS IS SOFTWARE IN DEVELOPMENT, DECIDE YOURSELF WHETHER IT FITS YOUR NEEDS.