freebsd-dev/sbin/geom/class/nop/geom_nop.c
Pawel Jakub Dawidek df3d5a19fc Teach NOP GEOM class how to gather the following statistics:
- number of read I/O requests,
- number of write I/O requests,
- number of read bytes,
- number of written bytes.
Add 'reset' subcommand for resetting statistics.
2005-12-08 23:00:31 +00:00

76 lines
2.4 KiB
C

/*-
* Copyright (c) 2004 Pawel Jakub Dawidek <pjd@FreeBSD.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <stdio.h>
#include <stdint.h>
#include <libgeom.h>
#include <geom/nop/g_nop.h>
#include "core/geom.h"
uint32_t lib_version = G_LIB_VERSION;
uint32_t version = G_NOP_VERSION;
static intmax_t failprob = 0;
static intmax_t offset = 0;
static intmax_t secsize = 0;
static intmax_t size = 0;
struct g_command class_commands[] = {
{ "create", G_FLAG_VERBOSE | G_FLAG_LOADKLD, NULL,
{
{ 'f', "failprob", &failprob, G_TYPE_NUMBER },
{ 'o', "offset", &offset, G_TYPE_NUMBER },
{ 's', "size", &size, G_TYPE_NUMBER },
{ 'S', "secsize", &secsize, G_TYPE_NUMBER },
G_OPT_SENTINEL
},
"[-v] [-f failprob] [-o offset] [-s size] [-S secsize] dev ..."
},
{ "configure", G_FLAG_VERBOSE, NULL,
{
{ 'f', "failprob", &failprob, G_TYPE_NUMBER },
G_OPT_SENTINEL
},
"[-v] [-f failprob] prov ..."
},
{ "destroy", G_FLAG_VERBOSE, NULL,
{
{ 'f', "force", NULL, G_TYPE_NONE },
G_OPT_SENTINEL
},
"[-fv] prov ..."
},
{ "reset", G_FLAG_VERBOSE, NULL, G_NULL_OPTS,
"[-v] prov ..."
},
G_CMD_SENTINEL
};