mirror of
https://github.com/octoleo/restic.git
synced 2024-11-22 12:55:18 +00:00
172 lines
6.3 KiB
ReStructuredText
172 lines
6.3 KiB
ReStructuredText
..
|
||
Normally, there are no heading levels assigned to certain characters as the structure is
|
||
determined from the succession of headings. However, this convention is used in Python’s
|
||
Style Guide for documenting which you may follow:
|
||
|
||
# with overline, for parts
|
||
* for chapters
|
||
= for sections
|
||
- for subsections
|
||
^ for subsubsections
|
||
" for paragraphs
|
||
|
||
|
||
#########################
|
||
Working with repositories
|
||
#########################
|
||
|
||
Listing all snapshots
|
||
=====================
|
||
|
||
Now, you can list all the snapshots stored in the repository:
|
||
|
||
.. code-block:: console
|
||
|
||
$ restic -r /srv/restic-repo snapshots
|
||
enter password for repository:
|
||
ID Date Host Tags Directory
|
||
----------------------------------------------------------------------
|
||
40dc1520 2015-05-08 21:38:30 kasimir /home/user/work
|
||
79766175 2015-05-08 21:40:19 kasimir /home/user/work
|
||
bdbd3439 2015-05-08 21:45:17 luigi /home/art
|
||
590c8fc8 2015-05-08 21:47:38 kazik /srv
|
||
9f0bc19e 2015-05-08 21:46:11 luigi /srv
|
||
|
||
You can filter the listing by directory path:
|
||
|
||
.. code-block:: console
|
||
|
||
$ restic -r /srv/restic-repo snapshots --path="/srv"
|
||
enter password for repository:
|
||
ID Date Host Tags Directory
|
||
----------------------------------------------------------------------
|
||
590c8fc8 2015-05-08 21:47:38 kazik /srv
|
||
9f0bc19e 2015-05-08 21:46:11 luigi /srv
|
||
|
||
Or filter by host:
|
||
|
||
.. code-block:: console
|
||
|
||
$ restic -r /srv/restic-repo snapshots --host luigi
|
||
enter password for repository:
|
||
ID Date Host Tags Directory
|
||
----------------------------------------------------------------------
|
||
bdbd3439 2015-05-08 21:45:17 luigi /home/art
|
||
9f0bc19e 2015-05-08 21:46:11 luigi /srv
|
||
|
||
Combining filters is also possible.
|
||
|
||
Furthermore you can group the output by the same filters (host, paths, tags):
|
||
|
||
.. code-block:: console
|
||
|
||
$ restic -r /srv/restic-repo snapshots --group-by host
|
||
|
||
enter password for repository:
|
||
snapshots for (host [kasimir])
|
||
ID Date Host Tags Directory
|
||
----------------------------------------------------------------------
|
||
40dc1520 2015-05-08 21:38:30 kasimir /home/user/work
|
||
79766175 2015-05-08 21:40:19 kasimir /home/user/work
|
||
2 snapshots
|
||
snapshots for (host [luigi])
|
||
ID Date Host Tags Directory
|
||
----------------------------------------------------------------------
|
||
bdbd3439 2015-05-08 21:45:17 luigi /home/art
|
||
9f0bc19e 2015-05-08 21:46:11 luigi /srv
|
||
2 snapshots
|
||
snapshots for (host [kazik])
|
||
ID Date Host Tags Directory
|
||
----------------------------------------------------------------------
|
||
590c8fc8 2015-05-08 21:47:38 kazik /srv
|
||
1 snapshots
|
||
|
||
|
||
Checking integrity and consistency
|
||
==================================
|
||
|
||
Imagine your repository is saved on a server that has a faulty hard
|
||
drive, or even worse, attackers get privileged access and modify the
|
||
files in your repository with the intention to make you restore
|
||
malicious data:
|
||
|
||
.. code-block:: console
|
||
|
||
$ echo "boom" > /srv/restic-repo/index/de30f3231ca2e6a59af4aa84216dfe2ef7339c549dc11b09b84000997b139628
|
||
|
||
Trying to restore a snapshot which has been modified as shown above
|
||
will yield an error:
|
||
|
||
.. code-block:: console
|
||
|
||
$ restic -r /srv/restic-repo --no-cache restore c23e491f --target /tmp/restore-work
|
||
...
|
||
Fatal: unable to load index de30f323: load <index/de30f3231c>: invalid data returned
|
||
|
||
In order to detect these things before they become a problem, it's a
|
||
good idea to regularly use the ``check`` command to test whether your
|
||
repository is healthy and consistent, and that your precious backup
|
||
data is unharmed. There are two types of checks that can be performed:
|
||
|
||
- Structural consistency and integrity, e.g. snapshots, trees and pack files (default)
|
||
- Integrity of the actual data that you backed up (enabled with flags, see below)
|
||
|
||
To verify the structure of the repository, issue the ``check`` command.
|
||
If the repository is damaged like in the example above, ``check`` will
|
||
detect this and yield the same error as when you tried to restore:
|
||
|
||
.. code-block:: console
|
||
|
||
$ restic -r /srv/restic-repo check
|
||
...
|
||
load indexes
|
||
error: error loading index de30f323: load <index/de30f3231c>: invalid data returned
|
||
Fatal: LoadIndex returned errors
|
||
|
||
If the repository structure is intact, restic will show that no errors were found:
|
||
|
||
.. code-block:: console
|
||
|
||
$ restic -r /src/restic-repo check
|
||
...
|
||
load indexes
|
||
check all packs
|
||
check snapshots, trees and blobs
|
||
no errors were found
|
||
|
||
By default, the ``check`` command does not verify that the actual data files
|
||
on disk in the repository are unmodified, because doing so requires reading
|
||
a copy of every data file in the repository. To tell restic to also verify the
|
||
integrity of the data files in the repository, use the ``--read-data`` flag:
|
||
|
||
.. code-block:: console
|
||
|
||
$ restic -r /srv/restic-repo check --read-data
|
||
...
|
||
load indexes
|
||
check all packs
|
||
check snapshots, trees and blobs
|
||
read all data
|
||
[0:00] 100.00% 3 / 3 items
|
||
duration: 0:00
|
||
no errors were found
|
||
|
||
.. note:: Since ``--read-data`` has to download all data files in the
|
||
repository, beware that it might incur higher bandwidth costs than usual
|
||
and also that it takes more time than the default ``check``.
|
||
|
||
Alternatively, use the ``--read-data-subset=n/t`` parameter to check only a
|
||
subset of the repository data files at a time. The parameter takes two values,
|
||
``n`` and ``t``. When the check command runs, all data files in the repository
|
||
are logically divided in ``t`` (roughly equal) groups, and only files that
|
||
belong to group number ``n`` are checked. For example, the following commands
|
||
check all repository data files over 5 separate invocations:
|
||
|
||
.. code-block:: console
|
||
|
||
$ restic -r /srv/restic-repo check --read-data-subset=1/5
|
||
$ restic -r /srv/restic-repo check --read-data-subset=2/5
|
||
$ restic -r /srv/restic-repo check --read-data-subset=3/5
|
||
$ restic -r /srv/restic-repo check --read-data-subset=4/5
|
||
$ restic -r /srv/restic-repo check --read-data-subset=5/5
|