mirror of https://github.com/borgbackup/borg.git
114 lines
4.0 KiB
PHP
114 lines
4.0 KiB
PHP
.. IMPORTANT: this file is auto-generated from borg's built-in help, do not edit!
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.. _borg_upgrade:
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borg upgrade
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------------
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::
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borg [common options] upgrade <options> REPOSITORY
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positional arguments
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REPOSITORY
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path to the repository to be upgraded
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optional arguments
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``-n``, ``--dry-run``
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| do not change repository
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``-i``, ``--inplace``
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| rewrite repository in place, with no chance of going back to older
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| versions of the repository.
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``--force``
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| Force upgrade
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``--tam``
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| Enable manifest authentication (in key and cache) (Borg 1.0.9 and later)
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``--disable-tam``
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| Disable manifest authentication (in key and cache)
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:ref:`common_options`
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Description
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~~~~~~~~~~~
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Upgrade an existing, local Borg repository.
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When you do not need borg upgrade
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+++++++++++++++++++++++++++++++++
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Not every change requires that you run ``borg upgrade``.
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You do **not** need to run it when:
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- moving your repository to a different place
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- upgrading to another point release (like 1.0.x to 1.0.y),
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except when noted otherwise in the changelog
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- upgrading from 1.0.x to 1.1.x,
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except when noted otherwise in the changelog
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Borg 1.x.y upgrades
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+++++++++++++++++++
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Use ``borg upgrade --tam REPO`` to require manifest authentication
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introduced with Borg 1.0.9 to address security issues. This means
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that modifying the repository after doing this with a version prior
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to 1.0.9 will raise a validation error, so only perform this upgrade
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after updating all clients using the repository to 1.0.9 or newer.
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This upgrade should be done on each client for safety reasons.
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If a repository is accidentally modified with a pre-1.0.9 client after
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this upgrade, use ``borg upgrade --tam --force REPO`` to remedy it.
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If you routinely do this you might not want to enable this upgrade
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(which will leave you exposed to the security issue). You can
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reverse the upgrade by issuing ``borg upgrade --disable-tam REPO``.
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See
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https://borgbackup.readthedocs.io/en/stable/changes.html#pre-1-0-9-manifest-spoofing-vulnerability
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for details.
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Attic and Borg 0.xx to Borg 1.x
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+++++++++++++++++++++++++++++++
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This currently supports converting an Attic repository to Borg and also
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helps with converting Borg 0.xx to 1.0.
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Currently, only LOCAL repositories can be upgraded (issue #465).
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Please note that ``borg create`` (since 1.0.0) uses bigger chunks by
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default than old borg or attic did, so the new chunks won't deduplicate
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with the old chunks in the upgraded repository.
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See ``--chunker-params`` option of ``borg create`` and ``borg recreate``.
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``borg upgrade`` will change the magic strings in the repository's
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segments to match the new Borg magic strings. The keyfiles found in
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$ATTIC_KEYS_DIR or ~/.attic/keys/ will also be converted and
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copied to $BORG_KEYS_DIR or ~/.config/borg/keys.
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The cache files are converted, from $ATTIC_CACHE_DIR or
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~/.cache/attic to $BORG_CACHE_DIR or ~/.cache/borg, but the
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cache layout between Borg and Attic changed, so it is possible
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the first backup after the conversion takes longer than expected
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due to the cache resync.
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Upgrade should be able to resume if interrupted, although it
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will still iterate over all segments. If you want to start
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from scratch, use `borg delete` over the copied repository to
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make sure the cache files are also removed:
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borg delete borg
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Unless ``--inplace`` is specified, the upgrade process first
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creates a backup copy of the repository, in
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REPOSITORY.upgrade-DATETIME, using hardlinks. This takes
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longer than in place upgrades, but is much safer and gives
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progress information (as opposed to ``cp -al``). Once you are
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satisfied with the conversion, you can safely destroy the
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backup copy.
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WARNING: Running the upgrade in place will make the current
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copy unusable with older version, with no way of going back
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to previous versions. This can PERMANENTLY DAMAGE YOUR
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REPOSITORY! Attic CAN NOT READ BORG REPOSITORIES, as the
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magic strings have changed. You have been warned. |