=========
Mirroring
=========

Indexes can be exported as `FUSE <https://en.wikipedia.org/wiki/Filesystem_in_Userspace>`_
filesystems. Using the management command ``mountindex`` we could export the
previous example index as follows::

    mkdir -p ~/indexes/products
    mayan-edms.py mountindex product-sheets-per-year ~/indexes/products

The ``~/indexes/products`` directory will now have a directory and files structure
identical to that of the index. Once indexes are mounted with this command, they
behave like any other filesystem directory and can even be further shared
via the network with network file system software like
`Samba <https://www.samba.org/>`_ or
`NFS <https://en.wikipedia.org/wiki/Network_File_System>`_.

.. blockdiag::

    blockdiag {
        orientation = portrait
        span_width = 200;

        index [ label = 'Product sheets per year', width=180 ];
        block_device [ height = 100, label = "Block device\n(Hard drive)", shape = flowchart.database ];
        network [ label = "Network", shape = cloud ];
        user [ label = "Users", shape = actor ];

        index -> block_device [ label = "mirroring", fontsize = 8 ];
        block_device -> network -> user;
   }

Indexes and mirrored indexes are Read Only as they are generated as a result of
prior activities like document uploads, metadata changes.