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Document refusal to process empty forget policy.

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Leo R. Lundgren 2018-02-14 00:20:09 +01:00 committed by rAWTAZ
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doc/060_forget.rst
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@ -188,6 +188,12 @@ All the ``--keep-*`` options above only count
hours/days/weeks/months/years which have a snapshot, so those without a
snapshot are ignored.
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
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 ID manually (by passing the ID to ``forget``).
All snapshots are evaluated counted against all matching keep-* counts. A
single snapshot on 2017-09-30 (Sun) will count as a daily, weekly and monthly.