file_deleter daemon.
Typically you don't need to customize this.
The default file deletion policy is:
- A workunit's input files are deleted when
all results are 'over' (reported or timed out)
and the workunit is assimilated.
- 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 when all results are over,
and all successful results have been validated.
Command-line options are:
";
list_start();
list_item(
"-preserve_wu_files",
"Don't delete input files"
);
list_item(
"-preserve_result_files",
"Don't delete output files"
);
list_item(
"-retry_errors",
"Retry file deletions that failed previously."
);
list_item(
"-delete_antiques",
"periodically (once per hour) removes any files in the
upload/ directory that are older than the oldest WU in the
database. These files are created when BOINC clients
return work really late after the deadline -- so late that
the corresponding WU has been deleted from the database."
);
list_item(
"-dont_delete_batches",
"If this boolean is set, the file deleter won't delete any files for which the corresponding workunit or result record has a positive value of the the 'batch' field. This lets you keep files on disk until you're done with them. Create workunits with a positive batch number, and zero out (or negate) the batch number when you're done looking at the files (you can do this with a SQL query). If you use this option, replace the indices on file_delete_state with indices on (file_delete_state, batch)."
);
list_end();
echo "
In some cases you may not want files to be deleted.
There are three ways to accomplish this:
- Run the file_deleter daemon with
the -preserve_wu_files
and/or the -preserve_result_files command-line options.
- Include <no_delete/>
in the <file_info> element for a file in a
workunit or result template.
This lets you suppress deletion on a file-by-file basis.
- Include
nodelete in the workunit name.
You may need to implement your own scheme for deleting files,
to avoid overflowing data server storage.
";
page_tail();
?>