forked from TrueCloudLab/restic
a7dc18e697
This introduces a new modifier to the output of the diff command. It appears whenever two files being compared only differ in their content but not in their metadata. As far as we know, under normal circumstances, this should only ever happen if some kind of bitrot has happened in the source file. The prerequisite for this detection to work is that the right-side snapshot of the comparison has been created with "backup --force".
595 lines
30 KiB
ReStructuredText
595 lines
30 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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Scripting
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#########################
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This is a list of how certain tasks may be accomplished when you use
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restic via scripts.
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Check if a repository is already initialized
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********************************************
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You may find a need to check if a repository is already initialized,
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perhaps to prevent your script from initializing a repository multiple
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times. The command ``cat config`` may be used for this purpose:
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.. code-block:: console
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$ restic -r /srv/restic-repo cat config
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Fatal: unable to open config file: stat /srv/restic-repo/config: no such file or directory
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Is there a repository at the following location?
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/srv/restic-repo
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If a repository does not exist, restic will return a non-zero exit code
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and print an error message. Note that restic will also return a non-zero
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exit code if a different error is encountered (e.g.: incorrect password
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to ``cat config``) and it may print a different error message. If there
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are no errors, restic will return a zero exit code and print the repository
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metadata.
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JSON output
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***********
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Restic outputs JSON data to ``stdout`` if requested with the ``--json`` flag.
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The structure of that data varies depending on the circumstance. The
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JSON output of most restic commands are documented here.
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.. note::
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Not all commands support JSON output. If a command does not support JSON output,
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feel free to submit a pull request!
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.. warning::
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We try to keep the JSON output backwards compatible. However, new message types
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or fields may be added at any time. Similarly, enum-like fields for which a fixed
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list of allowed values is documented may be extended at any time.
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Output formats
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--------------
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Currently only the output on ``stdout`` is JSON formatted. Errors printed on ``stderr``
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are still printed as plain text messages. The generated JSON output uses one of the
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following two formats.
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Single JSON document
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^^^^^^^^^^^^^^^^^^^^
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Several commands output a single JSON document that can be parsed in its entirety.
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Depending on the command, the output consists of either a single or multiple lines.
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JSON lines
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^^^^^^^^^^
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Several commands, in particular long running ones or those that generate a large output,
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use a format also known as JSON lines. It consists of a stream of new-line separated JSON
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messages. You can determine the nature of the message using the ``message_type`` field.
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As an exception, the ``ls`` command uses the field ``struct_type`` instead.
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backup
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------
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The ``backup`` command uses the JSON lines format with the following message types.
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Status
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^^^^^^
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+----------------------+------------------------------------------------------------+
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|``message_type`` | Always "status" |
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+----------------------+------------------------------------------------------------+
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|``seconds_elapsed`` | Time since backup started |
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+----------------------+------------------------------------------------------------+
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|``seconds_remaining`` | Estimated time remaining |
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+----------------------+------------------------------------------------------------+
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|``percent_done`` | Percentage of data backed up (bytes_done/total_bytes) |
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+----------------------+------------------------------------------------------------+
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|``total_files`` | Total number of files detected |
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+----------------------+------------------------------------------------------------+
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|``files_done`` | Files completed (backed up to repo) |
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+----------------------+------------------------------------------------------------+
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|``total_bytes`` | Total number of bytes in backup set |
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+----------------------+------------------------------------------------------------+
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|``bytes_done`` | Number of bytes completed (backed up to repo) |
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+----------------------+------------------------------------------------------------+
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|``error_count`` | Number of errors |
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+----------------------+------------------------------------------------------------+
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|``current_files`` | List of files currently being backed up |
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+----------------------+------------------------------------------------------------+
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Error
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^^^^^
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+----------------------+-------------------------------------------+
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| ``message_type`` | Always "error" |
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+----------------------+-------------------------------------------+
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| ``error`` | Error message |
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+----------------------+-------------------------------------------+
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| ``during`` | What restic was trying to do |
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+----------------------+-------------------------------------------+
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| ``item`` | Usually, the path of the problematic file |
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+----------------------+-------------------------------------------+
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Verbose Status
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^^^^^^^^^^^^^^
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Verbose status provides details about the progress, including details about backed up files.
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+----------------------+-----------------------------------------------------------+
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| ``message_type`` | Always "verbose_status" |
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+----------------------+-----------------------------------------------------------+
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| ``action`` | Either "new", "unchanged", "modified" or "scan_finished" |
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+----------------------+-----------------------------------------------------------+
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| ``item`` | The item in question |
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+----------------------+-----------------------------------------------------------+
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| ``duration`` | How long it took, in seconds |
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+----------------------+-----------------------------------------------------------+
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| ``data_size`` | How big the item is |
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+----------------------+-----------------------------------------------------------+
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| ``metadata_size`` | How big the metadata is |
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+----------------------+-----------------------------------------------------------+
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| ``total_files`` | Total number of files |
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+----------------------+-----------------------------------------------------------+
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Summary
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^^^^^^^
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Summary is the last output line in a successful backup.
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+---------------------------+---------------------------------------------------------+
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| ``message_type`` | Always "summary" |
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+---------------------------+---------------------------------------------------------+
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| ``files_new`` | Number of new files |
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+---------------------------+---------------------------------------------------------+
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| ``files_changed`` | Number of files that changed |
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+---------------------------+---------------------------------------------------------+
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| ``files_unmodified`` | Number of files that did not change |
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+---------------------------+---------------------------------------------------------+
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| ``dirs_new`` | Number of new directories |
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+---------------------------+---------------------------------------------------------+
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| ``dirs_changed`` | Number of directories that changed |
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+---------------------------+---------------------------------------------------------+
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| ``dirs_unmodified`` | Number of directories that did not change |
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+---------------------------+---------------------------------------------------------+
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| ``data_blobs`` | Number of data blobs |
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+---------------------------+---------------------------------------------------------+
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| ``tree_blobs`` | Number of tree blobs |
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+---------------------------+---------------------------------------------------------+
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| ``data_added`` | Amount of data added, in bytes |
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+---------------------------+---------------------------------------------------------+
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| ``total_files_processed`` | Total number of files processed |
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+---------------------------+---------------------------------------------------------+
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| ``total_bytes_processed`` | Total number of bytes processed |
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+---------------------------+---------------------------------------------------------+
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| ``total_duration`` | Total time it took for the operation to complete |
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+---------------------------+---------------------------------------------------------+
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| ``snapshot_id`` | ID of the new snapshot |
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+---------------------------+---------------------------------------------------------+
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cat
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---
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The ``cat`` command returns data about various objects in the repository, which
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are stored in JSON form. Specifying ``--json`` or ``--quiet`` will suppress any
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non-JSON messages the command generates.
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diff
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----
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The ``diff`` command uses the JSON lines format with the following message types.
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change
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^^^^^^
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+------------------+--------------------------------------------------------------+
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| ``message_type`` | Always "change" |
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+------------------+--------------------------------------------------------------+
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| ``path`` | Path that has changed |
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+------------------+--------------------------------------------------------------+
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| ``modifier`` | Type of change, a concatenation of the following characters: |
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| | "+" = added, "-" = removed, "T" = entry type changed, |
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| | "M" = file content changed, "U" = metadata changed, |
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| | "?" = bitrot detected |
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+------------------+--------------------------------------------------------------+
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statistics
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^^^^^^^^^^
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+---------------------+----------------------------+
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| ``message_type`` | Always "statistics" |
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+---------------------+----------------------------+
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| ``source_snapshot`` | ID of first snapshot |
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+---------------------+----------------------------+
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| ``target_snapshot`` | ID of second snapshot |
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+---------------------+----------------------------+
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| ``changed_files`` | Number of changed files |
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+---------------------+----------------------------+
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| ``added`` | DiffStat object, see below |
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+---------------------+----------------------------+
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| ``removed`` | DiffStat object, see below |
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+---------------------+----------------------------+
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DiffStat object
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+----------------+-------------------------------------------+
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| ``files`` | Number of changed files |
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+----------------+-------------------------------------------+
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| ``dirs`` | Number of changed directories |
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+----------------+-------------------------------------------+
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| ``others`` | Number of changed other directory entries |
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+----------------+-------------------------------------------+
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| ``data_blobs`` | Number of data blobs |
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+----------------+-------------------------------------------+
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| ``tree_blobs`` | Number of tree blobs |
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+----------------+-------------------------------------------+
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| ``bytes`` | Number of bytes |
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+----------------+-------------------------------------------+
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find
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----
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The ``find`` command outputs a single JSON document containing an array of JSON
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objects with matches for your search term. These matches are organized by snapshot.
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If the ``--blob`` or ``--tree`` option is passed, then the output is an array of
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Blob objects.
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+-----------------+----------------------------------------------+
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| ``hits`` | Number of matches in the snapshot |
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+-----------------+----------------------------------------------+
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| ``snapshot`` | ID of the snapshot |
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+-----------------+----------------------------------------------+
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| ``matches`` | Array of Match objects detailing a match |
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+-----------------+----------------------------------------------+
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Match object
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+-----------------+----------------------------------------------+
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| ``path`` | Object path |
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+-----------------+----------------------------------------------+
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| ``permissions`` | UNIX permissions |
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+-----------------+----------------------------------------------+
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| ``type`` | Object type e.g. file, dir, etc... |
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+-----------------+----------------------------------------------+
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| ``atime`` | Access time |
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+-----------------+----------------------------------------------+
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| ``mtime`` | Modification time |
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+-----------------+----------------------------------------------+
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| ``ctime`` | Change time |
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+-----------------+----------------------------------------------+
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| ``name`` | Object name |
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+-----------------+----------------------------------------------+
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| ``user`` | Name of owner |
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+-----------------+----------------------------------------------+
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| ``group`` | Name of group |
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+-----------------+----------------------------------------------+
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| ``inode`` | Inode number |
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+-----------------+----------------------------------------------+
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| ``mode`` | UNIX file mode, shorthand of ``permissions`` |
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+-----------------+----------------------------------------------+
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| ``device_id`` | OS specific device identifier |
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+-----------------+----------------------------------------------+
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| ``links`` | Number of hardlinks |
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+-----------------+----------------------------------------------+
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| ``uid`` | ID of owner |
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+-----------------+----------------------------------------------+
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| ``gid`` | ID of group |
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+-----------------+----------------------------------------------+
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| ``size`` | Size of object in bytes |
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+-----------------+----------------------------------------------+
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Blob object
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+-----------------+--------------------------------------------+
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| ``object_type`` | Either "blob" or "tree" |
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+-----------------+--------------------------------------------+
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| ``id`` | ID of found blob |
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+-----------------+--------------------------------------------+
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| ``path`` | Path in snapshot |
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+-----------------+--------------------------------------------+
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| ``parent_tree`` | Parent tree blob, only set for type "blob" |
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+-----------------+--------------------------------------------+
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| ``snapshot`` | Snapshot ID |
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+-----------------+--------------------------------------------+
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| ``time`` | Snapshot timestamp |
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+-----------------+--------------------------------------------+
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forget
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------
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The ``forget`` command prints a single JSON document containing an array of
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ForgetGroups. If specific snapshot IDs are specified, then no output is generated.
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The ``prune`` command does not yet support JSON such that ``forget --prune``
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results in a mix of JSON and text output.
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ForgetGroup
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^^^^^^^^^^^
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+-------------+-----------------------------------------------------------+
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| ``tags`` | Tags identifying the snapshot group |
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+-------------+-----------------------------------------------------------+
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| ``host`` | Host identifying the snapshot group |
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+-------------+-----------------------------------------------------------+
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| ``paths`` | Paths identifying the snapshot group |
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+-------------+-----------------------------------------------------------+
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| ``keep`` | Array of Snapshot objects that are kept |
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+-------------+-----------------------------------------------------------+
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| ``remove`` | Array of Snapshot objects that were removed |
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+-------------+-----------------------------------------------------------+
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| ``reasons`` | Array of Reason objects describing why a snapshot is kept |
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+-------------+-----------------------------------------------------------+
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Snapshot object
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+---------------------+--------------------------------------------------+
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| ``time`` | Timestamp of when the backup was started |
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+---------------------+--------------------------------------------------+
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| ``parent`` | ID of the parent snapshot |
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+---------------------+--------------------------------------------------+
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| ``tree`` | ID of the root tree blob |
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+---------------------+--------------------------------------------------+
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| ``paths`` | List of paths included in the backup |
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+---------------------+--------------------------------------------------+
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| ``hostname`` | Hostname of the backed up machine |
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+---------------------+--------------------------------------------------+
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| ``username`` | Username the backup command was run as |
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+---------------------+--------------------------------------------------+
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| ``uid`` | ID of owner |
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+---------------------+--------------------------------------------------+
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| ``gid`` | ID of group |
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+---------------------+--------------------------------------------------+
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| ``excludes`` | List of paths and globs excluded from the backup |
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+---------------------+--------------------------------------------------+
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| ``tags`` | List of tags for the snapshot in question |
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+---------------------+--------------------------------------------------+
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| ``program_version`` | restic version used to create snapshot |
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+---------------------+--------------------------------------------------+
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| ``id`` | Snapshot ID |
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+---------------------+--------------------------------------------------+
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| ``short_id`` | Snapshot ID, short form |
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+---------------------+--------------------------------------------------+
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Reason object
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+----------------+---------------------------------------------------------+
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| ``snapshot`` | Snapshot object, without ``id`` and ``short_id`` fields |
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+----------------+---------------------------------------------------------+
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| ``matches`` | Array containing descriptions of the matching criteria |
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+----------------+---------------------------------------------------------+
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| ``counters`` | Object containing counters used by the policies |
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+----------------+---------------------------------------------------------+
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init
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----
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The ``init`` command uses the JSON lines format, but only outputs a single message.
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+------------------+--------------------------------+
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| ``message_type`` | Always "initialized" |
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+------------------+--------------------------------+
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| ``id`` | ID of the created repository |
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+------------------+--------------------------------+
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| ``repository`` | URL of the repository |
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+------------------+--------------------------------+
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key list
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--------
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The ``key list`` command returns an array of objects with the following structure.
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+--------------+------------------------------------+
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| ``current`` | Is currently used key? |
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+--------------+------------------------------------+
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| ``id`` | Unique key ID |
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+--------------+------------------------------------+
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| ``userName`` | User who created it |
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+--------------+------------------------------------+
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| ``hostName`` | Name of machine it was created on |
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+--------------+------------------------------------+
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| ``created`` | Timestamp when it was created |
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+--------------+------------------------------------+
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ls
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--
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The ``ls`` command uses the JSON lines format with the following message types.
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As an exception, the ``struct_type`` field is used to determine the message type.
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snapshot
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^^^^^^^^
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+----------------+--------------------------------------------------+
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| ``struct_type``| Always "snapshot" |
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+----------------+--------------------------------------------------+
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| ``time`` | Timestamp of when the backup was started |
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+----------------+--------------------------------------------------+
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| ``parent`` | ID of the parent snapshot |
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+----------------+--------------------------------------------------+
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| ``tree`` | ID of the root tree blob |
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+----------------+--------------------------------------------------+
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| ``paths`` | List of paths included in the backup |
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+----------------+--------------------------------------------------+
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| ``hostname`` | Hostname of the backed up machine |
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+----------------+--------------------------------------------------+
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| ``username`` | Username the backup command was run as |
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+----------------+--------------------------------------------------+
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| ``uid`` | ID of owner |
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+----------------+--------------------------------------------------+
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| ``gid`` | ID of group |
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+----------------+--------------------------------------------------+
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| ``excludes`` | List of paths and globs excluded from the backup |
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+----------------+--------------------------------------------------+
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| ``tags`` | List of tags for the snapshot in question |
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+----------------+--------------------------------------------------+
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| ``id`` | Snapshot ID |
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+----------------+--------------------------------------------------+
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| ``short_id`` | Snapshot ID, short form |
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+----------------+--------------------------------------------------+
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node
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^^^^
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+-----------------+--------------------------+
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| ``struct_type`` | Always "node" |
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+-----------------+--------------------------+
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| ``name`` | Node name |
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+-----------------+--------------------------+
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| ``type`` | Node type |
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+-----------------+--------------------------+
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| ``path`` | Node path |
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+-----------------+--------------------------+
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| ``uid`` | UID of node |
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+-----------------+--------------------------+
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| ``gid`` | GID of node |
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+-----------------+--------------------------+
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| ``size`` | Size in bytes |
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+-----------------+--------------------------+
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| ``mode`` | Node mode |
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+-----------------+--------------------------+
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| ``atime`` | Node access time |
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+-----------------+--------------------------+
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| ``mtime`` | Node modification time |
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+-----------------+--------------------------+
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| ``ctime`` | Node creation time |
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+-----------------+--------------------------+
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| ``inode`` | Inode number of node |
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+-----------------+--------------------------+
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restore
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-------
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The ``restore`` command uses the JSON lines format with the following message types.
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Status
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^^^^^^
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+----------------------+------------------------------------------------------------+
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|``message_type`` | Always "status" |
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+----------------------+------------------------------------------------------------+
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|``seconds_elapsed`` | Time since restore started |
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+----------------------+------------------------------------------------------------+
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|``percent_done`` | Percentage of data restored (bytes_restored/total_bytes) |
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+----------------------+------------------------------------------------------------+
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|``total_files`` | Total number of files detected |
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+----------------------+------------------------------------------------------------+
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|``files_restored`` | Files restored |
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+----------------------+------------------------------------------------------------+
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|``total_bytes`` | Total number of bytes in restore set |
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+----------------------+------------------------------------------------------------+
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|``bytes_restored`` | Number of bytes restored |
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+----------------------+------------------------------------------------------------+
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Summary
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^^^^^^^
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+----------------------+------------------------------------------------------------+
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|``message_type`` | Always "summary" |
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+----------------------+------------------------------------------------------------+
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|``seconds_elapsed`` | Time since restore started |
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+----------------------+------------------------------------------------------------+
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|``total_files`` | Total number of files detected |
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+----------------------+------------------------------------------------------------+
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|``files_restored`` | Files restored |
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+----------------------+------------------------------------------------------------+
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|``total_bytes`` | Total number of bytes in restore set |
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+----------------------+------------------------------------------------------------+
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|``bytes_restored`` | Number of bytes restored |
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+----------------------+------------------------------------------------------------+
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snapshots
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---------
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The snapshots command returns a single JSON object, an array with objects of the structure outlined below.
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|
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+---------------------+--------------------------------------------------+
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| ``time`` | Timestamp of when the backup was started |
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+---------------------+--------------------------------------------------+
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| ``parent`` | ID of the parent snapshot |
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+---------------------+--------------------------------------------------+
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| ``tree`` | ID of the root tree blob |
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+---------------------+--------------------------------------------------+
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| ``paths`` | List of paths included in the backup |
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+---------------------+--------------------------------------------------+
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| ``hostname`` | Hostname of the backed up machine |
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+---------------------+--------------------------------------------------+
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| ``username`` | Username the backup command was run as |
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+---------------------+--------------------------------------------------+
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| ``uid`` | ID of owner |
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+---------------------+--------------------------------------------------+
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| ``gid`` | ID of group |
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+---------------------+--------------------------------------------------+
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| ``excludes`` | List of paths and globs excluded from the backup |
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+---------------------+--------------------------------------------------+
|
|
| ``tags`` | List of tags for the snapshot in question |
|
|
+---------------------+--------------------------------------------------+
|
|
| ``program_version`` | restic version used to create snapshot |
|
|
+---------------------+--------------------------------------------------+
|
|
| ``id`` | Snapshot ID |
|
|
+---------------------+--------------------------------------------------+
|
|
| ``short_id`` | Snapshot ID, short form |
|
|
+---------------------+--------------------------------------------------+
|
|
|
|
|
|
stats
|
|
-----
|
|
|
|
The stats command returns a single JSON object.
|
|
|
|
+------------------------------+-----------------------------------------------------+
|
|
| ``total_size`` | Repository size in bytes |
|
|
+------------------------------+-----------------------------------------------------+
|
|
| ``total_file_count`` | Number of files backed up in the repository |
|
|
+------------------------------+-----------------------------------------------------+
|
|
| ``total_blob_count`` | Number of blobs in the repository |
|
|
+------------------------------+-----------------------------------------------------+
|
|
| ``snapshots_count`` | Number of processed snapshots |
|
|
+------------------------------+-----------------------------------------------------+
|
|
| ``total_uncompressed_size`` | Repository size in bytes if blobs were uncompressed |
|
|
+------------------------------+-----------------------------------------------------+
|
|
| ``compression_ratio`` | Factor by which the already compressed data |
|
|
| | has shrunk due to compression |
|
|
+------------------------------+-----------------------------------------------------+
|
|
| ``compression_progress`` | Percentage of already compressed data |
|
|
+------------------------------+-----------------------------------------------------+
|
|
| ``compression_space_saving`` | Overall space saving due to compression |
|
|
+------------------------------+-----------------------------------------------------+
|
|
|
|
|
|
version
|
|
-------
|
|
|
|
The version command returns a single JSON object.
|
|
|
|
+----------------+--------------------+
|
|
| ``version`` | restic version |
|
|
+----------------+--------------------+
|
|
| ``go_version`` | Go compile version |
|
|
+----------------+--------------------+
|
|
| ``go_os`` | Go OS |
|
|
+----------------+--------------------+
|
|
| ``go_arch`` | Go architecture |
|
|
+----------------+--------------------+
|