Prefix filenames with this directory. Used to place files in a different
location than :file:`./`. You can specify a number of directories by
separating the names with a ':' character. These directories will be
- assigned equally distributed to job clones creates with :option:`numjobs` as
+ assigned equally distributed to job clones created by :option:`numjobs` as
long as they are using generated filenames. If specific `filename(s)` are
set fio will use the first listed directory, and thereby matching the
`filename` semantic which generates a file each clone if not specified, but
let all clones use the same if set.
- See the :option:`filename` option for escaping certain characters.
+ See the :option:`filename` option for information on how to escape "``:``" and
+ "``\``" characters within the directory path itself.
.. option:: filename=str
Fio normally makes up a `filename` based on the job name, thread number, and
- file number. If you want to share files between threads in a job or several
+ file number (see :option:`filename_format`). If you want to share files
+ between threads in a job or several
jobs with fixed file paths, specify a `filename` for each of them to override
the default. If the ioengine is file based, you can specify a number of files
by separating the names with a ':' colon. So if you wanted a job to open
:file:`/dev/sda` and :file:`/dev/sdb` as the two working files, you would use
``filename=/dev/sda:/dev/sdb``. This also means that whenever this option is
specified, :option:`nrfiles` is ignored. The size of regular files specified
- by this option will be :option:`size` divided by number of files unless
+ by this option will be :option:`size` divided by number of files unless an
explicit size is specified by :option:`filesize`.
+ Each colon and backslash in the wanted path must be escaped with a ``\``
+ character. For instance, if the path is :file:`/dev/dsk/foo@3,0:c` then you
+ would use ``filename=/dev/dsk/foo@3,0\:c`` and if the path is
+ :file:`F:\\filename` then you would use ``filename=F\:\\filename``.
+
On Windows, disk devices are accessed as :file:`\\\\.\\PhysicalDrive0` for
the first device, :file:`\\\\.\\PhysicalDrive1` for the second etc.
Note: Windows and FreeBSD prevent write access to areas
- of the disk containing in-use data (e.g. filesystems). If the wanted
- `filename` does need to include a colon, then escape that with a ``\``
- character. For instance, if the `filename` is :file:`/dev/dsk/foo@3,0:c`,
- then you would use ``filename="/dev/dsk/foo@3,0\:c"``. The
- :file:`-` is a reserved name, meaning stdin or stdout. Which of the two
- depends on the read/write direction set.
+ of the disk containing in-use data (e.g. filesystems).
+
+ The filename "`-`" is a reserved name, meaning *stdin* or *stdout*. Which
+ of the two depends on the read/write direction set.
.. option:: filename_format=str
projects / fio.git / blobdiff