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Suzanne Goldlust 2021-10-18 18:41:44 +00:00 committed by Thomas Markwalder
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doc/sphinx/arm/lfc.rst
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@ -10,7 +10,7 @@ Overview
========
``kea-lfc`` is a service process that removes redundant information from
the files used to provide persistent storage for the Memfile database
the files used to provide persistent storage for the memfile database
backend. This service is written to run as a standalone process.
While ``kea-lfc`` can be started externally, there is usually no need to
@ -55,17 +55,17 @@ for input, write its output, and perform its bookkeeping:
- ``input`` — before the DHCP server invokes ``kea-lfc``, it moves
the current lease file here and then calls ``kea-lfc`` with this file.
- ``output`` — This is the temporary file where ``kea-lfc`` writes the
leases. Once the file has finished writing, it will be moved to the
finish file (see below).
- ``output`` — this is the temporary file where ``kea-lfc`` writes the
leases. Once the file has finished writing, it is moved to the
``finish`` file (see below).
- ``finish`` — This is another temporary file ``kea-lfc`` uses for
bookkeeping. When ``kea-lfc`` completes writing the output file, it
moves the output to this file name. After ``kea-lfc`` finishes deleting the
other files (previous and input), it moves this file to the previous
lease file. By moving the files in this fashion, the ``kea-lfc`` and
- ``finish`` — this is another temporary file ``kea-lfc`` uses for
bookkeeping. When ``kea-lfc`` completes writing the ``output`` file, it
moves the contents to the file of this name. After ``kea-lfc`` finishes deleting the
other files (``previous`` and ``input``), it moves this file to the ``previous``
lease file. By moving the files in this fashion, ``kea-lfc`` and
the DHCP server processes can determine the correct file to use even
if one of the processes were interrupted before completing its task.
if one of the processes is interrupted before completing its task.
There are several additional arguments, mostly for debugging purposes.
``-d`` sets the logging level to debug. ``-v`` and ``-V`` print out