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123 lines
4.7 KiB
ReStructuredText
123 lines
4.7 KiB
ReStructuredText
..
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Normally, there are no heading levels assigned to certain characters as the structure is
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determined from the succession of headings. However, this convention is used in Python’s
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Style Guide for documenting which you may follow:
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# with overline, for parts
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* for chapters
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= for sections
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- for subsections
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^ for subsubsections
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" for paragraphs
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#####################
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Restoring from backup
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#####################
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Restoring from a snapshot
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=========================
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Restoring a snapshot is as easy as it sounds, just use the following
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command to restore the contents of the latest snapshot to
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``/tmp/restore-work``:
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.. code-block:: console
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$ restic -r /srv/restic-repo restore 79766175 --target /tmp/restore-work
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enter password for repository:
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restoring <Snapshot of [/home/user/work] at 2015-05-08 21:40:19.884408621 +0200 CEST> to /tmp/restore-work
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Use the word ``latest`` to restore the last backup. You can also combine
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``latest`` with the ``--host`` and ``--path`` filters to choose the last
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backup for a specific host, path or both.
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.. code-block:: console
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$ restic -r /srv/restic-repo restore latest --target /tmp/restore-art --path "/home/art" --host luigi
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enter password for repository:
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restoring <Snapshot of [/home/art] at 2015-05-08 21:45:17.884408621 +0200 CEST> to /tmp/restore-art
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Use ``--exclude`` and ``--include`` to restrict the restore to a subset of
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files in the snapshot. For example, to restore a single file:
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.. code-block:: console
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$ restic -r /srv/restic-repo restore 79766175 --target /tmp/restore-work --include /work/foo
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enter password for repository:
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restoring <Snapshot of [/home/user/work] at 2015-05-08 21:40:19.884408621 +0200 CEST> to /tmp/restore-work
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This will restore the file ``foo`` to ``/tmp/restore-work/work/foo``.
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You can use the command ``restic ls latest`` or ``restic find foo`` to find the
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path to the file within the snapshot. This path you can then pass to
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`--include` in verbatim to only restore the single file or directory.
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Restore using mount
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===================
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Browsing your backup as a regular file system is also very easy. First,
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create a mount point such as ``/mnt/restic`` and then use the following
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command to serve the repository with FUSE:
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.. code-block:: console
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$ mkdir /mnt/restic
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$ restic -r /srv/restic-repo mount /mnt/restic
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enter password for repository:
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Now serving /srv/restic-repo at /mnt/restic
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Don't forget to umount after quitting!
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Mounting repositories via FUSE is not possible on OpenBSD, Solaris/illumos
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and Windows. For Linux, the ``fuse`` kernel module needs to be loaded. For
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FreeBSD, you may need to install FUSE and load the kernel module (``kldload
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fuse``).
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Restic supports storage and preservation of hard links. However, since
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hard links exist in the scope of a filesystem by definition, restoring
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hard links from a fuse mount should be done by a program that preserves
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hard links. A program that does so is ``rsync``, used with the option
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--hard-links.
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Printing files to stdout
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========================
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Sometimes it's helpful to print files to stdout so that other programs can read
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the data directly. This can be achieved by using the `dump` command, like this:
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.. code-block:: console
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$ restic -r /srv/restic-repo dump latest production.sql | mysql
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If you have saved multiple different things into the same repo, the ``latest``
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snapshot may not be the right one. For example, consider the following
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snapshots in a repo:
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.. code-block:: console
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$ restic -r /srv/restic-repo snapshots
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ID Date Host Tags Directory
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----------------------------------------------------------------------
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562bfc5e 2018-07-14 20:18:01 mopped /home/user/file1
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bbacb625 2018-07-14 20:18:07 mopped /home/other/work
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e922c858 2018-07-14 20:18:10 mopped /home/other/work
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098db9d5 2018-07-14 20:18:13 mopped /production.sql
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b62f46ec 2018-07-14 20:18:16 mopped /home/user/file1
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1541acae 2018-07-14 20:18:18 mopped /home/other/work
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----------------------------------------------------------------------
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Here, restic would resolve ``latest`` to the snapshot ``1541acae``, which does
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not contain the file we'd like to print at all (``production.sql``). In this
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case, you can pass restic the snapshot ID of the snapshot you like to restore:
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.. code-block:: console
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$ restic -r /srv/restic-repo dump 098db9d5 production.sql | mysql
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Or you can pass restic a path that should be used for selecting the latest
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snapshot. The path must match the patch printed in the "Directory" column,
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e.g.:
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.. code-block:: console
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$ restic -r /srv/restic-repo dump --path /production.sql latest production.sql | mysql
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