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123 lines
3.6 KiB
ReStructuredText
123 lines
3.6 KiB
ReStructuredText
.. note:: This describes an incomplete feature under development.
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Selective Sync
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==============
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This is for when you don't want to synchronize *all* files from the cluster
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onto your device, or you want only some directories of your to be synced
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*to* the cluster. There are two mechanisms that support this usage; *Directory
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Selection* and *Excluded Files*.
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Directory Selection
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-------------------
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By default, all directories in a given folder are synchronized. Using
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directory selection, the synchronization can be limited to a subset of
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directories. The selection is done by using a tree browser. The tree
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represents the cluster wide contents of a folder. The default is represented
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by the top level being checked and directories underneath the top level thus
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being implicitly included::
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[X] ~/Sync
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[ ] Documents
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[ ] Processes
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[ ] Standards
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[ ] Pictures
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[ ] Vacation
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[ ] Work
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[ ] Music
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[ ] Classical
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[ ] Rock
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To only synchronize documents and vacation pictures, the following selection can be made::
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[/] ~/Sync
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[X] Documents
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[ ] Processes
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[ ] Standards
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[/] Pictures
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[X] Vacation
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[ ] Work
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[ ] Music
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[ ] Classical
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[ ] Rock
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The top level shows a partial checkbox to indicate that selections have been
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made at a lower level. With this configuration Syncthing will ignore any files
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and directories no in ~/Sync/Documents or ~/Sync/Pictures/Vacation -- no
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changes will be downloaded from the cluster and local changes will not be
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tracked.
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.. note:: When displaying the tree we must merge what we actually have on disk
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with what is in the global state.Or we will not be able to show new
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directories to the user as we don't know about them...
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Excluded Files
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--------------
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In addition to using directory selection, specific files can be excluded by
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adding patterns to match them. Excluded files are:
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- Ignored when found on disk (i.e. not hashed and not announced to other
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devices).
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- Ignored when announced by other devices (i.e. will not contribute to an "out
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of sync" status or be fetched from the network).
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- *Removed* when present in a directory that is marked for deletion by another
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device.
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Patterns are in "glob" form, with the following allowed syntax elements:
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Asterisk (``*``)
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Matches zero or more characters.
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Question mark (``?``)
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Matches exactly one character.
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Ranges (``[a-f]``)
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Matches any of the characters in the range exactly once.
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Exclamation mark (``!``)
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At the start of a pattern, inverts the pattern (i.e. make matched file *not* be excluded).
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Examples:
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``*.jpg``
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Matches all files with the ``jpg`` extension.
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``[0-9]*``
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Matches all files with names starting with a digit.
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``!*.doc``
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Do not exclude ``.doc`` files.
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File exclusions apply only to files, not to directories, and apply equally in
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all directories in the folder. Patterns are searched in the order given and
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the first match wins.
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Use Cases
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---------
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Sync only specific directories
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This is covered perfectly by the "directory selection" part
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Exclude common crap files like Thumbs.db
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This is covered perfectly by the "excluded files" part
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Sync only a specific file type
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Covered by ``!``-pattern plus exclude everything
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Exclude a specific directory only
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Possible by using directory selection and selecting all other directories.
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Sync only a specific file in a specific directory; i.e. only one movie out of lots
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Not really possible... Do we need this?
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Syncing ignore and exclusion patterns between devices
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Not supported. However not impossible in the future, given that we store the above in the config.
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