boinc/doc/file_deleter.php

<?php
require_once("docutil.php");
page_head("Server-side file deletion");
echo "
Files are deleted from the data server's upload and download directories
by the <b>file_deleter</b> daemon.
Typically you don't need to customize this.
The default file deletion policy is:
<ul>
<li> A workunit's input files are deleted when
all results are 'over' (reported or timed out)
and the workunit is assimilated.
<li> A result's output files are deleted
after the workunit is assimilated.
The canonical result is handled differently,
since its output files may be needed to validate
results that are reported after assimilation;
hence its files are deleted only all results are over,
and all successful results have been validated.
</ul>

<p>
In some cases you may not want files to be deleted.
There are two ways to accomplish this:
<ul>
<li> Run the file_deleter daemon with
the -preserve_wu_files command-line option
(to preserve all input files)
and/or the -preserve_result_files command-line option
(to preserve all output files).
<li> Include &lt;no_delete/>
in the <a href=files.php>&lt;file_info></a> element for a file in a
<a href=tools_work.php>workunit or result template</a>.
This lets you suppress deletion on a file-by-file basis.

<li> Include the string <code>nodelete</code> in the workunit name.

</ul>
In either case you may need to implement your
own scheme for deleting files,
to avoid overflowing data server storage.
";
page_tail();
?>