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||||||
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GNU GENERAL PUBLIC LICENSE
|
||||||
|
Version 2, June 1991
|
||||||
|
|
||||||
|
Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
|
||||||
|
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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||||||
|
Everyone is permitted to copy and distribute verbatim copies
|
||||||
|
of this license document, but changing it is not allowed.
|
||||||
|
|
||||||
|
Preamble
|
||||||
|
|
||||||
|
The licenses for most software are designed to take away your
|
||||||
|
freedom to share and change it. By contrast, the GNU General Public
|
||||||
|
License is intended to guarantee your freedom to share and change free
|
||||||
|
software--to make sure the software is free for all its users. This
|
||||||
|
General Public License applies to most of the Free Software
|
||||||
|
Foundation's software and to any other program whose authors commit to
|
||||||
|
using it. (Some other Free Software Foundation software is covered by
|
||||||
|
the GNU Lesser General Public License instead.) You can apply it to
|
||||||
|
your programs, too.
|
||||||
|
|
||||||
|
When we speak of free software, we are referring to freedom, not
|
||||||
|
price. Our General Public Licenses are designed to make sure that you
|
||||||
|
have the freedom to distribute copies of free software (and charge for
|
||||||
|
this service if you wish), that you receive source code or can get it
|
||||||
|
if you want it, that you can change the software or use pieces of it
|
||||||
|
in new free programs; and that you know you can do these things.
|
||||||
|
|
||||||
|
To protect your rights, we need to make restrictions that forbid
|
||||||
|
anyone to deny you these rights or to ask you to surrender the rights.
|
||||||
|
These restrictions translate to certain responsibilities for you if you
|
||||||
|
distribute copies of the software, or if you modify it.
|
||||||
|
|
||||||
|
For example, if you distribute copies of such a program, whether
|
||||||
|
gratis or for a fee, you must give the recipients all the rights that
|
||||||
|
you have. You must make sure that they, too, receive or can get the
|
||||||
|
source code. And you must show them these terms so they know their
|
||||||
|
rights.
|
||||||
|
|
||||||
|
We protect your rights with two steps: (1) copyright the software, and
|
||||||
|
(2) offer you this license which gives you legal permission to copy,
|
||||||
|
distribute and/or modify the software.
|
||||||
|
|
||||||
|
Also, for each author's protection and ours, we want to make certain
|
||||||
|
that everyone understands that there is no warranty for this free
|
||||||
|
software. If the software is modified by someone else and passed on, we
|
||||||
|
want its recipients to know that what they have is not the original, so
|
||||||
|
that any problems introduced by others will not reflect on the original
|
||||||
|
authors' reputations.
|
||||||
|
|
||||||
|
Finally, any free program is threatened constantly by software
|
||||||
|
patents. We wish to avoid the danger that redistributors of a free
|
||||||
|
program will individually obtain patent licenses, in effect making the
|
||||||
|
program proprietary. To prevent this, we have made it clear that any
|
||||||
|
patent must be licensed for everyone's free use or not licensed at all.
|
||||||
|
|
||||||
|
The precise terms and conditions for copying, distribution and
|
||||||
|
modification follow.
|
||||||
|
|
||||||
|
GNU GENERAL PUBLIC LICENSE
|
||||||
|
TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
|
||||||
|
|
||||||
|
0. This License applies to any program or other work which contains
|
||||||
|
a notice placed by the copyright holder saying it may be distributed
|
||||||
|
under the terms of this General Public License. The "Program", below,
|
||||||
|
refers to any such program or work, and a "work based on the Program"
|
||||||
|
means either the Program or any derivative work under copyright law:
|
||||||
|
that is to say, a work containing the Program or a portion of it,
|
||||||
|
either verbatim or with modifications and/or translated into another
|
||||||
|
language. (Hereinafter, translation is included without limitation in
|
||||||
|
the term "modification".) Each licensee is addressed as "you".
|
||||||
|
|
||||||
|
Activities other than copying, distribution and modification are not
|
||||||
|
covered by this License; they are outside its scope. The act of
|
||||||
|
running the Program is not restricted, and the output from the Program
|
||||||
|
is covered only if its contents constitute a work based on the
|
||||||
|
Program (independent of having been made by running the Program).
|
||||||
|
Whether that is true depends on what the Program does.
|
||||||
|
|
||||||
|
1. You may copy and distribute verbatim copies of the Program's
|
||||||
|
source code as you receive it, in any medium, provided that you
|
||||||
|
conspicuously and appropriately publish on each copy an appropriate
|
||||||
|
copyright notice and disclaimer of warranty; keep intact all the
|
||||||
|
notices that refer to this License and to the absence of any warranty;
|
||||||
|
and give any other recipients of the Program a copy of this License
|
||||||
|
along with the Program.
|
||||||
|
|
||||||
|
You may charge a fee for the physical act of transferring a copy, and
|
||||||
|
you may at your option offer warranty protection in exchange for a fee.
|
||||||
|
|
||||||
|
2. You may modify your copy or copies of the Program or any portion
|
||||||
|
of it, thus forming a work based on the Program, and copy and
|
||||||
|
distribute such modifications or work under the terms of Section 1
|
||||||
|
above, provided that you also meet all of these conditions:
|
||||||
|
|
||||||
|
a) You must cause the modified files to carry prominent notices
|
||||||
|
stating that you changed the files and the date of any change.
|
||||||
|
|
||||||
|
b) You must cause any work that you distribute or publish, that in
|
||||||
|
whole or in part contains or is derived from the Program or any
|
||||||
|
part thereof, to be licensed as a whole at no charge to all third
|
||||||
|
parties under the terms of this License.
|
||||||
|
|
||||||
|
c) If the modified program normally reads commands interactively
|
||||||
|
when run, you must cause it, when started running for such
|
||||||
|
interactive use in the most ordinary way, to print or display an
|
||||||
|
announcement including an appropriate copyright notice and a
|
||||||
|
notice that there is no warranty (or else, saying that you provide
|
||||||
|
a warranty) and that users may redistribute the program under
|
||||||
|
these conditions, and telling the user how to view a copy of this
|
||||||
|
License. (Exception: if the Program itself is interactive but
|
||||||
|
does not normally print such an announcement, your work based on
|
||||||
|
the Program is not required to print an announcement.)
|
||||||
|
|
||||||
|
These requirements apply to the modified work as a whole. If
|
||||||
|
identifiable sections of that work are not derived from the Program,
|
||||||
|
and can be reasonably considered independent and separate works in
|
||||||
|
themselves, then this License, and its terms, do not apply to those
|
||||||
|
sections when you distribute them as separate works. But when you
|
||||||
|
distribute the same sections as part of a whole which is a work based
|
||||||
|
on the Program, the distribution of the whole must be on the terms of
|
||||||
|
this License, whose permissions for other licensees extend to the
|
||||||
|
entire whole, and thus to each and every part regardless of who wrote it.
|
||||||
|
|
||||||
|
Thus, it is not the intent of this section to claim rights or contest
|
||||||
|
your rights to work written entirely by you; rather, the intent is to
|
||||||
|
exercise the right to control the distribution of derivative or
|
||||||
|
collective works based on the Program.
|
||||||
|
|
||||||
|
In addition, mere aggregation of another work not based on the Program
|
||||||
|
with the Program (or with a work based on the Program) on a volume of
|
||||||
|
a storage or distribution medium does not bring the other work under
|
||||||
|
the scope of this License.
|
||||||
|
|
||||||
|
3. You may copy and distribute the Program (or a work based on it,
|
||||||
|
under Section 2) in object code or executable form under the terms of
|
||||||
|
Sections 1 and 2 above provided that you also do one of the following:
|
||||||
|
|
||||||
|
a) Accompany it with the complete corresponding machine-readable
|
||||||
|
source code, which must be distributed under the terms of Sections
|
||||||
|
1 and 2 above on a medium customarily used for software interchange; or,
|
||||||
|
|
||||||
|
b) Accompany it with a written offer, valid for at least three
|
||||||
|
years, to give any third party, for a charge no more than your
|
||||||
|
cost of physically performing source distribution, a complete
|
||||||
|
machine-readable copy of the corresponding source code, to be
|
||||||
|
distributed under the terms of Sections 1 and 2 above on a medium
|
||||||
|
customarily used for software interchange; or,
|
||||||
|
|
||||||
|
c) Accompany it with the information you received as to the offer
|
||||||
|
to distribute corresponding source code. (This alternative is
|
||||||
|
allowed only for noncommercial distribution and only if you
|
||||||
|
received the program in object code or executable form with such
|
||||||
|
an offer, in accord with Subsection b above.)
|
||||||
|
|
||||||
|
The source code for a work means the preferred form of the work for
|
||||||
|
making modifications to it. For an executable work, complete source
|
||||||
|
code means all the source code for all modules it contains, plus any
|
||||||
|
associated interface definition files, plus the scripts used to
|
||||||
|
control compilation and installation of the executable. However, as a
|
||||||
|
special exception, the source code distributed need not include
|
||||||
|
anything that is normally distributed (in either source or binary
|
||||||
|
form) with the major components (compiler, kernel, and so on) of the
|
||||||
|
operating system on which the executable runs, unless that component
|
||||||
|
itself accompanies the executable.
|
||||||
|
|
||||||
|
If distribution of executable or object code is made by offering
|
||||||
|
access to copy from a designated place, then offering equivalent
|
||||||
|
access to copy the source code from the same place counts as
|
||||||
|
distribution of the source code, even though third parties are not
|
||||||
|
compelled to copy the source along with the object code.
|
||||||
|
|
||||||
|
4. You may not copy, modify, sublicense, or distribute the Program
|
||||||
|
except as expressly provided under this License. Any attempt
|
||||||
|
otherwise to copy, modify, sublicense or distribute the Program is
|
||||||
|
void, and will automatically terminate your rights under this License.
|
||||||
|
However, parties who have received copies, or rights, from you under
|
||||||
|
this License will not have their licenses terminated so long as such
|
||||||
|
parties remain in full compliance.
|
||||||
|
|
||||||
|
5. You are not required to accept this License, since you have not
|
||||||
|
signed it. However, nothing else grants you permission to modify or
|
||||||
|
distribute the Program or its derivative works. These actions are
|
||||||
|
prohibited by law if you do not accept this License. Therefore, by
|
||||||
|
modifying or distributing the Program (or any work based on the
|
||||||
|
Program), you indicate your acceptance of this License to do so, and
|
||||||
|
all its terms and conditions for copying, distributing or modifying
|
||||||
|
the Program or works based on it.
|
||||||
|
|
||||||
|
6. Each time you redistribute the Program (or any work based on the
|
||||||
|
Program), the recipient automatically receives a license from the
|
||||||
|
original licensor to copy, distribute or modify the Program subject to
|
||||||
|
these terms and conditions. You may not impose any further
|
||||||
|
restrictions on the recipients' exercise of the rights granted herein.
|
||||||
|
You are not responsible for enforcing compliance by third parties to
|
||||||
|
this License.
|
||||||
|
|
||||||
|
7. If, as a consequence of a court judgment or allegation of patent
|
||||||
|
infringement or for any other reason (not limited to patent issues),
|
||||||
|
conditions are imposed on you (whether by court order, agreement or
|
||||||
|
otherwise) that contradict the conditions of this License, they do not
|
||||||
|
excuse you from the conditions of this License. If you cannot
|
||||||
|
distribute so as to satisfy simultaneously your obligations under this
|
||||||
|
License and any other pertinent obligations, then as a consequence you
|
||||||
|
may not distribute the Program at all. For example, if a patent
|
||||||
|
license would not permit royalty-free redistribution of the Program by
|
||||||
|
all those who receive copies directly or indirectly through you, then
|
||||||
|
the only way you could satisfy both it and this License would be to
|
||||||
|
refrain entirely from distribution of the Program.
|
||||||
|
|
||||||
|
If any portion of this section is held invalid or unenforceable under
|
||||||
|
any particular circumstance, the balance of the section is intended to
|
||||||
|
apply and the section as a whole is intended to apply in other
|
||||||
|
circumstances.
|
||||||
|
|
||||||
|
It is not the purpose of this section to induce you to infringe any
|
||||||
|
patents or other property right claims or to contest validity of any
|
||||||
|
such claims; this section has the sole purpose of protecting the
|
||||||
|
integrity of the free software distribution system, which is
|
||||||
|
implemented by public license practices. Many people have made
|
||||||
|
generous contributions to the wide range of software distributed
|
||||||
|
through that system in reliance on consistent application of that
|
||||||
|
system; it is up to the author/donor to decide if he or she is willing
|
||||||
|
to distribute software through any other system and a licensee cannot
|
||||||
|
impose that choice.
|
||||||
|
|
||||||
|
This section is intended to make thoroughly clear what is believed to
|
||||||
|
be a consequence of the rest of this License.
|
||||||
|
|
||||||
|
8. If the distribution and/or use of the Program is restricted in
|
||||||
|
certain countries either by patents or by copyrighted interfaces, the
|
||||||
|
original copyright holder who places the Program under this License
|
||||||
|
may add an explicit geographical distribution limitation excluding
|
||||||
|
those countries, so that distribution is permitted only in or among
|
||||||
|
countries not thus excluded. In such case, this License incorporates
|
||||||
|
the limitation as if written in the body of this License.
|
||||||
|
|
||||||
|
9. The Free Software Foundation may publish revised and/or new versions
|
||||||
|
of the General Public License from time to time. Such new versions will
|
||||||
|
be similar in spirit to the present version, but may differ in detail to
|
||||||
|
address new problems or concerns.
|
||||||
|
|
||||||
|
Each version is given a distinguishing version number. If the Program
|
||||||
|
specifies a version number of this License which applies to it and "any
|
||||||
|
later version", you have the option of following the terms and conditions
|
||||||
|
either of that version or of any later version published by the Free
|
||||||
|
Software Foundation. If the Program does not specify a version number of
|
||||||
|
this License, you may choose any version ever published by the Free Software
|
||||||
|
Foundation.
|
||||||
|
|
||||||
|
10. If you wish to incorporate parts of the Program into other free
|
||||||
|
programs whose distribution conditions are different, write to the author
|
||||||
|
to ask for permission. For software which is copyrighted by the Free
|
||||||
|
Software Foundation, write to the Free Software Foundation; we sometimes
|
||||||
|
make exceptions for this. Our decision will be guided by the two goals
|
||||||
|
of preserving the free status of all derivatives of our free software and
|
||||||
|
of promoting the sharing and reuse of software generally.
|
||||||
|
|
||||||
|
NO WARRANTY
|
||||||
|
|
||||||
|
11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
|
||||||
|
FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN
|
||||||
|
OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
|
||||||
|
PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
|
||||||
|
OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
|
||||||
|
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS
|
||||||
|
TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE
|
||||||
|
PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
|
||||||
|
REPAIR OR CORRECTION.
|
||||||
|
|
||||||
|
12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
|
||||||
|
WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
|
||||||
|
REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
|
||||||
|
INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
|
||||||
|
OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
|
||||||
|
TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
|
||||||
|
YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
|
||||||
|
PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
|
||||||
|
POSSIBILITY OF SUCH DAMAGES.
|
||||||
|
|
||||||
|
END OF TERMS AND CONDITIONS
|
||||||
|
|
||||||
|
How to Apply These Terms to Your New Programs
|
||||||
|
|
||||||
|
If you develop a new program, and you want it to be of the greatest
|
||||||
|
possible use to the public, the best way to achieve this is to make it
|
||||||
|
free software which everyone can redistribute and change under these terms.
|
||||||
|
|
||||||
|
To do so, attach the following notices to the program. It is safest
|
||||||
|
to attach them to the start of each source file to most effectively
|
||||||
|
convey the exclusion of warranty; and each file should have at least
|
||||||
|
the "copyright" line and a pointer to where the full notice is found.
|
||||||
|
|
||||||
|
<one line to give the program's name and a brief idea of what it does.>
|
||||||
|
Copyright (C) <year> <name of author>
|
||||||
|
|
||||||
|
This program is free software; you can redistribute it and/or modify
|
||||||
|
it under the terms of the GNU General Public License as published by
|
||||||
|
the Free Software Foundation; either version 2 of the License, or
|
||||||
|
(at your option) any later version.
|
||||||
|
|
||||||
|
This program is distributed in the hope that it will be useful,
|
||||||
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||||
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||||
|
GNU General Public License for more details.
|
||||||
|
|
||||||
|
You should have received a copy of the GNU General Public License along
|
||||||
|
with this program; if not, write to the Free Software Foundation, Inc.,
|
||||||
|
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
||||||
|
|
||||||
|
Also add information on how to contact you by electronic and paper mail.
|
||||||
|
|
||||||
|
If the program is interactive, make it output a short notice like this
|
||||||
|
when it starts in an interactive mode:
|
||||||
|
|
||||||
|
Gnomovision version 69, Copyright (C) year name of author
|
||||||
|
Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
|
||||||
|
This is free software, and you are welcome to redistribute it
|
||||||
|
under certain conditions; type `show c' for details.
|
||||||
|
|
||||||
|
The hypothetical commands `show w' and `show c' should show the appropriate
|
||||||
|
parts of the General Public License. Of course, the commands you use may
|
||||||
|
be called something other than `show w' and `show c'; they could even be
|
||||||
|
mouse-clicks or menu items--whatever suits your program.
|
||||||
|
|
||||||
|
You should also get your employer (if you work as a programmer) or your
|
||||||
|
school, if any, to sign a "copyright disclaimer" for the program, if
|
||||||
|
necessary. Here is a sample; alter the names:
|
||||||
|
|
||||||
|
Yoyodyne, Inc., hereby disclaims all copyright interest in the program
|
||||||
|
`Gnomovision' (which makes passes at compilers) written by James Hacker.
|
||||||
|
|
||||||
|
<signature of Ty Coon>, 1 April 1989
|
||||||
|
Ty Coon, President of Vice
|
||||||
|
|
||||||
|
This General Public License does not permit incorporating your program into
|
||||||
|
proprietary programs. If your program is a subroutine library, you may
|
||||||
|
consider it more useful to permit linking proprietary applications with the
|
||||||
|
library. If this is what you want to do, use the GNU Lesser General
|
||||||
|
Public License instead of this License.
|
|
@ -0,0 +1,6 @@
|
||||||
|
CXXFLAGS := -g -O3 -Wall -Wno-sign-compare -Wno-comment -Wno-parentheses -Wno-pointer-arith -fPIC -fdiagnostics-color=always
|
||||||
|
all: libfio_fileserver.so
|
||||||
|
clean:
|
||||||
|
rm libfio_fileserver.so
|
||||||
|
libfio_fileserver.so: fio_fileserver.cpp
|
||||||
|
g++ $(CXXFLAGS) -shared -o $@ $<
|
|
@ -0,0 +1,41 @@
|
||||||
|
# libfio_fileserver
|
||||||
|
|
||||||
|
This is a loadable engine for [fio](https://github.com/axboe/fio) to test something similar to
|
||||||
|
the file server access pattern where a number of files is sharded over several levels of subdirectories.
|
||||||
|
|
||||||
|
# Building
|
||||||
|
|
||||||
|
* Clone this repository
|
||||||
|
* Clone or symlink the source code directory for your exact `fio` version in `./fio` subdirectory
|
||||||
|
* Install g++
|
||||||
|
* Run `make`
|
||||||
|
|
||||||
|
# Usage
|
||||||
|
|
||||||
|
```
|
||||||
|
fio -name=test -ioengine=./libfio_fileserver.so -directory=/home/bench \
|
||||||
|
-chunk_size=256k -size=10G -direct=1 [-dir_levels=2] [-subdirs_per_dir=64] \
|
||||||
|
-bs=256k -rw=randwrite [-fsync_on_close=1] [-sync=1] [-numjobs=16 -group_reporting]
|
||||||
|
```
|
||||||
|
|
||||||
|
Notes:
|
||||||
|
* `direct=1` is optional, but without it you'll be benchmarking the page cache
|
||||||
|
* `bs=256k` must be less or equal to `chunk_size`
|
||||||
|
* `fsync=N` is supported, but it only fsyncs a random file
|
||||||
|
* reads return error when encountering a non-existing file
|
||||||
|
* You can also use various distribution parameters (zipf, etc)
|
||||||
|
* I/O is done using synchronous syscalls, thus iodepth is not supported
|
||||||
|
|
||||||
|
Because of the synchronous syscalls it's slightly tricky to use parallelism correctly.
|
||||||
|
So, for example, to fill the directory with 262144 4k files, run:
|
||||||
|
|
||||||
|
```
|
||||||
|
fio -thread -name=test -direct=1 -ioengine=./libfio_fileserver.so -fsync_on_close=1 \
|
||||||
|
-directory=/home/bench -chunk_size=4k -size=1G -bs=4k -rw=write:508k \
|
||||||
|
-numjobs=128 -offset_increment=4k -group_reporting
|
||||||
|
```
|
||||||
|
|
||||||
|
# License & Author
|
||||||
|
|
||||||
|
* Author: Vitaliy Filippov vitalif[at]yourcmc.ru, 2020
|
||||||
|
* License: GNU GPL v2.0 or later version
|
|
@ -0,0 +1,263 @@
|
||||||
|
// FIO engine to test "file server" access pattern
|
||||||
|
// I.e. read/write over a number of files sharded over several levels of subdirectories
|
||||||
|
//
|
||||||
|
// USAGE: fio -name=test -ioengine=./libfio_fileserver.so -chunk_size=256K \
|
||||||
|
// -directory=/home/bench -size=10G [-direct=1] [-fsync_on_close=1] [-sync=1] [-dir_levels=2] [-subdirs_per_dir=64]
|
||||||
|
|
||||||
|
#ifndef _LARGEFILE64_SOURCE
|
||||||
|
#define _LARGEFILE64_SOURCE
|
||||||
|
#endif
|
||||||
|
|
||||||
|
#include <sys/types.h>
|
||||||
|
#include <sys/stat.h>
|
||||||
|
#include <unistd.h>
|
||||||
|
#include <fcntl.h>
|
||||||
|
|
||||||
|
#include <string>
|
||||||
|
|
||||||
|
extern "C" {
|
||||||
|
#define CONFIG_HAVE_GETTID
|
||||||
|
#define CONFIG_PWRITEV2
|
||||||
|
#include "fio/fio.h"
|
||||||
|
#include "fio/optgroup.h"
|
||||||
|
}
|
||||||
|
|
||||||
|
struct sec_data
|
||||||
|
{
|
||||||
|
int __pad;
|
||||||
|
};
|
||||||
|
|
||||||
|
struct sec_options
|
||||||
|
{
|
||||||
|
int __pad;
|
||||||
|
int __pad2;
|
||||||
|
int dir_levels = 2;
|
||||||
|
int subdirs_per_dir = 64;
|
||||||
|
int chunk_size = 262144;
|
||||||
|
};
|
||||||
|
|
||||||
|
static struct fio_option options[] = {
|
||||||
|
{
|
||||||
|
.name = "dir_levels",
|
||||||
|
.lname = "dir levels",
|
||||||
|
.type = FIO_OPT_INT,
|
||||||
|
.off1 = offsetof(struct sec_options, dir_levels),
|
||||||
|
.help = "levels of nested directories (2 by default)",
|
||||||
|
.def = "2",
|
||||||
|
.category = FIO_OPT_C_ENGINE,
|
||||||
|
.group = FIO_OPT_G_FILENAME,
|
||||||
|
},
|
||||||
|
{
|
||||||
|
.name = "subdirs_per_dir",
|
||||||
|
.lname = "subdirectories per directory",
|
||||||
|
.type = FIO_OPT_INT,
|
||||||
|
.off1 = offsetof(struct sec_options, subdirs_per_dir),
|
||||||
|
.help = "subdirectories per directory (64 by default)",
|
||||||
|
.def = "64",
|
||||||
|
.category = FIO_OPT_C_ENGINE,
|
||||||
|
.group = FIO_OPT_G_FILENAME,
|
||||||
|
},
|
||||||
|
{
|
||||||
|
.name = "chunk_size",
|
||||||
|
.lname = "size of each fileserver chunk (file)",
|
||||||
|
.type = FIO_OPT_INT,
|
||||||
|
.off1 = offsetof(struct sec_options, chunk_size),
|
||||||
|
.help = "all I/O will be divided between files of this size (256K by default)",
|
||||||
|
.def = "262144",
|
||||||
|
.category = FIO_OPT_C_ENGINE,
|
||||||
|
.group = FIO_OPT_G_FILENAME,
|
||||||
|
},
|
||||||
|
{
|
||||||
|
.name = NULL,
|
||||||
|
},
|
||||||
|
};
|
||||||
|
|
||||||
|
static int sec_setup(struct thread_data *td)
|
||||||
|
{
|
||||||
|
sec_data *bsd;
|
||||||
|
|
||||||
|
bsd = new sec_data;
|
||||||
|
if (!bsd)
|
||||||
|
{
|
||||||
|
td_verror(td, errno, "calloc");
|
||||||
|
return 1;
|
||||||
|
}
|
||||||
|
td->io_ops_data = bsd;
|
||||||
|
|
||||||
|
if (!td->files_index)
|
||||||
|
{
|
||||||
|
add_file(td, "fileserver", 0, 0);
|
||||||
|
td->o.nr_files = td->o.nr_files ? : 1;
|
||||||
|
td->o.open_files++;
|
||||||
|
}
|
||||||
|
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
static void sec_cleanup(struct thread_data *td)
|
||||||
|
{
|
||||||
|
sec_data *bsd = (sec_data*)td->io_ops_data;
|
||||||
|
if (bsd)
|
||||||
|
{
|
||||||
|
delete bsd;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
static int sec_init(struct thread_data *td)
|
||||||
|
{
|
||||||
|
sec_options *opt = (sec_options*)td->eo;
|
||||||
|
if (!td->o.directory || opt->chunk_size <= 0 || opt->dir_levels > 0 && opt->subdirs_per_dir <= 0)
|
||||||
|
{
|
||||||
|
fprintf(stderr, "USAGE: fio -name=test -ioengine=./libfio_fileserver.so"
|
||||||
|
" -chunk_size=256K -directory=/home/bench -size=10G [-direct=1] [-fsync_on_close=1] [-sync=1] [-dir_levels=2] [-subdirs_per_dir=64]\n");
|
||||||
|
exit(1);
|
||||||
|
}
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Begin read or write request. */
|
||||||
|
static enum fio_q_status sec_queue(struct thread_data *td, struct io_u *io)
|
||||||
|
{
|
||||||
|
sec_options *opt = (sec_options*)td->eo;
|
||||||
|
sec_data *bsd = (sec_data*)td->io_ops_data;
|
||||||
|
int r;
|
||||||
|
|
||||||
|
fio_ro_check(td, io);
|
||||||
|
|
||||||
|
io->engine_data = bsd;
|
||||||
|
|
||||||
|
uint64_t file_num = io->offset / opt->chunk_size;
|
||||||
|
struct stat statbuf;
|
||||||
|
std::string file_name(td->o.directory);
|
||||||
|
char buf[128];
|
||||||
|
uint64_t file_idx = file_num;
|
||||||
|
for (int i = 0; i < opt->dir_levels; i++)
|
||||||
|
{
|
||||||
|
int subdir = file_idx % opt->subdirs_per_dir;
|
||||||
|
file_idx /= opt->subdirs_per_dir;
|
||||||
|
snprintf(buf, sizeof(buf), "%02x", subdir);
|
||||||
|
file_name += "/"+std::string(buf);
|
||||||
|
r = stat(file_name.c_str(), &statbuf);
|
||||||
|
if (r < 0)
|
||||||
|
{
|
||||||
|
if (errno == ENOENT)
|
||||||
|
{
|
||||||
|
if (io->ddir == DDIR_WRITE)
|
||||||
|
{
|
||||||
|
r = mkdir(file_name.c_str(), 0777);
|
||||||
|
if (r < 0 && errno != EEXIST)
|
||||||
|
{
|
||||||
|
fprintf(stderr, "Error mkdir(%s): %d (%s)\n", file_name.c_str(), errno, strerror(errno));
|
||||||
|
exit(1);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
else
|
||||||
|
{
|
||||||
|
fprintf(stderr, "Error stat(%s): %d (%s)\n", file_name.c_str(), errno, strerror(errno));
|
||||||
|
exit(1);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
snprintf(buf, sizeof(buf), "%02lx", file_idx);
|
||||||
|
file_name += "/"+std::string(buf);
|
||||||
|
|
||||||
|
int fd = open(file_name.c_str(),
|
||||||
|
(io->ddir == DDIR_WRITE ? (O_CREAT|O_RDWR) : O_RDONLY)
|
||||||
|
| (td->o.sync_io ? O_SYNC : 0)
|
||||||
|
| (td->o.odirect ? O_DIRECT : 0)
|
||||||
|
);
|
||||||
|
if (fd < 0 && errno != ENOENT)
|
||||||
|
{
|
||||||
|
fprintf(stderr, "Error open(%s): %d (%s)\n", file_name.c_str(), errno, strerror(errno));
|
||||||
|
exit(1);
|
||||||
|
}
|
||||||
|
if (io->ddir == DDIR_READ)
|
||||||
|
{
|
||||||
|
if (fd >= 0)
|
||||||
|
{
|
||||||
|
io->error = pread(fd, io->xfer_buf, io->xfer_buflen, io->offset % opt->chunk_size) < 0 ? errno : 0;
|
||||||
|
}
|
||||||
|
else
|
||||||
|
{
|
||||||
|
// Read from a non-existing file
|
||||||
|
io->error = ENOENT;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
else if (io->ddir == DDIR_WRITE)
|
||||||
|
{
|
||||||
|
io->error = pwrite(fd, io->xfer_buf, io->xfer_buflen, io->offset % opt->chunk_size) < 0 ? errno : 0;
|
||||||
|
if (io->error >= 0 && td->o.fsync_on_close)
|
||||||
|
{
|
||||||
|
io->error = fsync(fd) < 0 ? errno : 0;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
else if (io->ddir == DDIR_SYNC)
|
||||||
|
{
|
||||||
|
io->error = fsync(fd) < 0 ? errno : 0;
|
||||||
|
}
|
||||||
|
else
|
||||||
|
{
|
||||||
|
io->error = EINVAL;
|
||||||
|
}
|
||||||
|
close(fd);
|
||||||
|
return FIO_Q_COMPLETED;
|
||||||
|
}
|
||||||
|
|
||||||
|
static int sec_getevents(struct thread_data *td, unsigned int min, unsigned int max, const struct timespec *t)
|
||||||
|
{
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
static struct io_u *sec_event(struct thread_data *td, int event)
|
||||||
|
{
|
||||||
|
return NULL;
|
||||||
|
}
|
||||||
|
|
||||||
|
static int sec_io_u_init(struct thread_data *td, struct io_u *io)
|
||||||
|
{
|
||||||
|
io->engine_data = NULL;
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
static void sec_io_u_free(struct thread_data *td, struct io_u *io)
|
||||||
|
{
|
||||||
|
}
|
||||||
|
|
||||||
|
static int sec_open_file(struct thread_data *td, struct fio_file *f)
|
||||||
|
{
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
static int sec_invalidate(struct thread_data *td, struct fio_file *f)
|
||||||
|
{
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
struct ioengine_ops ioengine = {
|
||||||
|
.name = "fileserver",
|
||||||
|
.version = FIO_IOOPS_VERSION,
|
||||||
|
.flags = FIO_MEMALIGN | FIO_DISKLESSIO | FIO_NOEXTEND,
|
||||||
|
.setup = sec_setup,
|
||||||
|
.init = sec_init,
|
||||||
|
.queue = sec_queue,
|
||||||
|
.getevents = sec_getevents,
|
||||||
|
.event = sec_event,
|
||||||
|
.cleanup = sec_cleanup,
|
||||||
|
.open_file = sec_open_file,
|
||||||
|
.invalidate = sec_invalidate,
|
||||||
|
.io_u_init = sec_io_u_init,
|
||||||
|
.io_u_free = sec_io_u_free,
|
||||||
|
.option_struct_size = sizeof(struct sec_options),
|
||||||
|
.options = options,
|
||||||
|
};
|
||||||
|
|
||||||
|
static void fio_init fio_sec_register(void)
|
||||||
|
{
|
||||||
|
register_ioengine(&ioengine);
|
||||||
|
}
|
||||||
|
|
||||||
|
static void fio_exit fio_sec_unregister(void)
|
||||||
|
{
|
||||||
|
unregister_ioengine(&ioengine);
|
||||||
|
}
|
Loading…
Reference in New Issue