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document --unsafe-allow-remove-all option

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Michael Eischer 2024-05-19 00:34:18 +02:00
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doc/060_forget.rst
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@ -182,7 +182,9 @@ The ``forget`` command accepts the following policy options:
- ``--keep-yearly n`` for the last ``n`` years which have one or more - ``--keep-yearly n`` for the last ``n`` years which have one or more
snapshots, keep only the most recent one for each year. snapshots, keep only the most recent one for each year.
- ``--keep-tag`` keep all snapshots which have all tags specified by - ``--keep-tag`` keep all snapshots which have all tags specified by
this option (can be specified multiple times). this option (can be specified multiple times). The ``forget`` command will
exit with an error if all snapshots in a snapshot group would be removed
as none of them have the specified tags.
- ``--keep-within duration`` keep all snapshots having a timestamp within - ``--keep-within duration`` keep all snapshots having a timestamp within
the specified duration of the latest snapshot, where ``duration`` is a the specified duration of the latest snapshot, where ``duration`` is a
number of years, months, days, and hours. E.g. ``2y5m7d3h`` will keep all number of years, months, days, and hours. E.g. ``2y5m7d3h`` will keep all
@ -336,12 +338,23 @@ year and yearly for the last 75 years, you can instead specify ``forget
--keep-within-yearly 75y`` (note that `1w` is not a recognized duration, so --keep-within-yearly 75y`` (note that `1w` is not a recognized duration, so
you will have to specify `7d` instead). you will have to specify `7d` instead).
Removing all snapshots
======================
For safety reasons, restic refuses to act on an "empty" policy. For example, For safety reasons, restic refuses to act on an "empty" policy. For example,
if one were to specify ``--keep-last 0`` to forget *all* snapshots in the if one were to specify ``--keep-last 0`` to forget *all* snapshots in the
repository, restic will respond that no snapshots will be removed. To delete repository, restic will respond that no snapshots will be removed. To delete
all snapshots, use ``--keep-last 1`` and then finally remove the last snapshot all snapshots, use ``--keep-last 1`` and then finally remove the last snapshot
manually (by passing the ID to ``forget``). manually (by passing the ID to ``forget``).
Since restic 0.17.0, it is possible to delete all snapshots for a specific
host, tag or path using the ``--unsafe-allow-remove-all`` option. The option
must always be combined with a snapshot filter (by host, path or tag).
For example the command ``forget --tag example --unsafe-allow-remove-all``
removes all snapshots with tag ``example``.
Security considerations in append-only mode Security considerations in append-only mode
=========================================== ===========================================