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Add documentation for copy command

This commit is contained in:
Michael Eischer 2020-08-24 23:15:16 +02:00
parent 9a4796594a
commit 91e8d998cd
2 changed files with 61 additions and 0 deletions

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@ -82,6 +82,66 @@ Furthermore you can group the output by the same filters (host, paths, tags):
1 snapshots 1 snapshots
Copying snapshots between repositories
======================================
In case you want to transfer snapshots between two repositories, for
example from a local to a remote repository, you can use the ``copy`` command:
.. code-block:: console
$ restic -r /srv/restic-repo copy --repo2 /srv/restic-repo-copy
repository d6504c63 opened successfully, password is correct
repository 3dd0878c opened successfully, password is correct
snapshot 410b18a2 of [/home/user/work] at 2020-06-09 23:15:57.305305 +0200 CEST)
copy started, this may take a while...
snapshot 7a746a07 saved
snapshot 4e5d5487 of [/home/user/work] at 2020-05-01 22:44:07.012113 +0200 CEST)
skipping snapshot 4e5d5487, was already copied to snapshot 50eb62b7
The example command copies all snapshots from the source repository
``/srv/restic-repo`` to the destination repository ``/srv/restic-repo-copy``.
Snapshots which have previously been copied between repositories will
be skipped by later copy runs.
.. note:: Note that this process will have to read (download) and write (upload) the
entire snapshot(s) due to the different encryption keys used in the source and
destination repository. Also, the transferred files are not re-chunked, which
may break deduplication between files already stored in the destination repo
and files copied there using this command.
For the destination repository ``--repo2`` the password can be read from
a file ``--password-file2`` or from a command ``--password-command2``.
Alternatively the environment variables ``$RESTIC_PASSWORD_COMMAND2`` and
``$RESTIC_PASSWORD_FILE2`` can be used. It is also possible to directly
pass the password via ``$RESTIC_PASSWORD2``. The key which should be used
for decryption can be selected by passing its ID via the flag ``--key-hint2``
or the environment variable ``$RESTIC_KEY_HINT2``.
In case the source and destination repository use the same backend, then
configuration options and environment variables to configure the backend
apply to both repositories. For example it might not be possible to specify
different accounts for the source and destination repository. You can
avoid this limitation by using the rclone backend along with remotes which
are configured in rclone.
The list of snapshots to copy can be filtered by host, path in the backup
and / or a comma-separated tag list:
.. code-block:: console
$ restic -r /srv/restic-repo copy --repo2 /srv/restic-repo-copy --host luigi --path /srv --tag foo,bar
It is also possible to explicitly specify the list of snapshots to copy, in
which case only these instead of all snapshots will be copied:
.. code-block:: console
$ restic -r /srv/restic-repo copy --repo2 /srv/restic-repo-copy 410b18a2 4e5d5487 latest
Checking integrity and consistency Checking integrity and consistency
================================== ==================================

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@ -20,6 +20,7 @@ Usage help is available:
cache Operate on local cache directories cache Operate on local cache directories
cat Print internal objects to stdout cat Print internal objects to stdout
check Check the repository for errors check Check the repository for errors
copy Copy snapshots from one repository to another
diff Show differences between two snapshots diff Show differences between two snapshots
dump Print a backed-up file to stdout dump Print a backed-up file to stdout
find Find a file, a directory or restic IDs find Find a file, a directory or restic IDs