diff --git a/docs/faq.rst b/docs/faq.rst index 53b1503a1..72a34eee7 100644 --- a/docs/faq.rst +++ b/docs/faq.rst @@ -296,6 +296,34 @@ the archive, compacting the segments, and committing the repo & cache. This mean when Borg is run with e.g. the ``time`` command, the duration shown in the archive stats may be shorter than the full time the command runs for. +How do I configure different prune policies for different directories? +---------------------------------------------------------------------- + +Say you want to prune ``/var/log`` faster than the rest of +``/``. How do we implement that? The answer is to backup to different +archive *names* and then implement different prune policies for +different prefixes. For example, you could have a script that does:: + + borg create $REPOSITORY:main-$(date +%Y-%m-%d) --exclude /var/log / + borg create $REPOSITORY:logs-$(date +%Y-%m-%d) /var/log + +Then you would have two different prune calls with different policies:: + + borg prune --verbose --list -d 30 --prefix main- "$REPOSITORY" + borg prune --verbose --list -d 7 --prefix logs- "$REPOSITORY" + +This will keep 7 days of logs and 30 days of everything else. Borg 1.1 +also supports the ``--glob-archives`` parameter. + +How do I remove files from an existing backup? +---------------------------------------------- + +Say you now want to remove old logfiles because you changed your +backup policy as described above. The only way to do this is to use +the :ref:`borg_recreate` command to rewrite all archives with a +different ``--exclude`` pattern. See the examples in the +:ref:`borg_recreate` manpage for more information. + Security ########