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Merge pull request #2998 from greatroar/env-docs

Systematize documentation of environment variables
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rawtaz 2020-10-24 22:49:31 +02:00 committed by GitHub
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4 changed files with 19 additions and 22 deletions

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@ -433,6 +433,8 @@ environment variables. The following lists these environment variables:
RESTIC_CACHE_DIR Location of the cache directory
RESTIC_PROGRESS_FPS Frames per second by which the progress bar is updated
TMPDIR Location for temporary files
AWS_ACCESS_KEY_ID Amazon S3 access key ID
AWS_SECRET_ACCESS_KEY Amazon S3 secret access key
AWS_DEFAULT_REGION Amazon S3 default region
@ -470,12 +472,12 @@ environment variables. The following lists these environment variables:
RCLONE_BWLIMIT rclone bandwidth limit
In addition to restic-specific environment variables, the following system-wide environment variables
are taken into account for various operations:
See :ref:`caching` for the rules concerning cache locations when
``RESTIC_CACHE_DIR`` is not set.
* ``$XDG_CACHE_HOME/restic``, ``$HOME/.cache/restic``: :ref:`caching`.
* ``$TMPDIR``: :ref:`temporary_files`.
* ``$PATH/fusermount``: Binary for ``restic mount``.
The external programs that restic may execute include ``rclone`` (for rclone
backends) and ``ssh`` (for the SFTP backend). These may respond to further
environment variables and configuration files; see their respective manuals.
Exit status codes

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@ -71,10 +71,11 @@ command to serve the repository with FUSE:
Now serving /srv/restic-repo at /mnt/restic
When finished, quit with Ctrl-c or umount the mountpoint.
Mounting repositories via FUSE is not possible on OpenBSD, Solaris/illumos
and Windows. For Linux, the ``fuse`` kernel module needs to be loaded. For
FreeBSD, you may need to install FUSE and load the kernel module (``kldload
fuse``).
Mounting repositories via FUSE is only possible on Linux, macOS and FreeBSD.
On Linux, the ``fuse`` kernel module needs to be loaded and the ``fusermount``
command needs to be in the ``PATH``. On macOS, you need `FUSE for macOS
<https://osxfuse.github.io/>`__. On FreeBSD, you may need to install FUSE
and load the kernel module (``kldload fuse``).
Restic supports storage and preservation of hard links. However, since
hard links exist in the scope of a filesystem by definition, restoring

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@ -3,23 +3,13 @@ Local Cache
***********
In order to speed up certain operations, restic manages a local cache of data.
This document describes the data structures for the local cache with version 1.
The location of the cache directory depends on the operating system and the
environment; see :ref:`caching`.
Versions
========
The cache directory is selected according to the `XDG base dir specification
<https://standards.freedesktop.org/basedir-spec/basedir-spec-latest.html>`__.
Each repository has its own cache sub-directory, consisting of the repository ID
which is chosen at ``init``. All cache directories for different repos are
independent of each other.
The cache dir for a repo contains a file named ``version``, which contains a
single ASCII integer line that stands for the current version of the cache. If
a lower version number is found the cache is recreated with the current
version. If a higher version number is found the cache is ignored and left as
is.
Snapshots, Data and Indexes
===========================

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@ -399,10 +399,14 @@ This allows faster operations, since meta data does not need to be loaded from
a remote repository. The cache is automatically created, usually in an
OS-specific cache folder:
* Linux/other: ``~/.cache/restic`` (or ``$XDG_CACHE_HOME/restic``)
* Linux/other: ``$XDG_CACHE_HOME/restic``, or ``~/.cache/restic`` if
``XDG_CACHE_HOME`` is not set
* macOS: ``~/Library/Caches/restic``
* Windows: ``%LOCALAPPDATA%/restic``
If the relevant environment variables are not set, restic exits with an error
message.
The command line parameter ``--cache-dir`` or the environment variable
``$RESTIC_CACHE_DIR`` can be used to override the default cache location. The
parameter ``--no-cache`` disables the cache entirely. In this case, all data