rrd based system stats
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/***************************************************************************
* Copyright (C) 06/2006 by Olaf Rempel *
* razzor@kopf-tisch.de *
* *
* 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., *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
***************************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include <mntent.h>
#include <sys/vfs.h>
#include <string.h>
#include "plugins.h"
#include "probe.h"
struct sammler_plugin plugin;
static const char *ds_def = {
"DS:block_total:GAUGE:15:0:U "
"DS:block_free:GAUGE:15:0:U "
};
static const char * get_ds(int ds_id)
{
return ds_def;
}
static int probe(void)
{
FILE *fp;
struct mntent *mnt;
struct statfs fs;
char *slash, filename[64];
int len;
fp = setmntent("/etc/mtab", "r");
if (fp == NULL) {
log_print(LOG_WARN, "plugin mount");
return -1;
}
while ((mnt = getmntent(fp)) != NULL) {
if (!strcmp(mnt->mnt_fsname, "none"))
continue;
if (!strcmp(mnt->mnt_fsname, "proc"))
continue;
if (!strcmp(mnt->mnt_fsname, "sysfs"))
continue;
if (!strcmp(mnt->mnt_fsname, "udev"))
continue;
if (!strcmp(mnt->mnt_fsname, "devpts"))
continue;
if (!strcmp(mnt->mnt_type, "nfs"))
continue;
if (!strcmp(mnt->mnt_type, "tmpfs"))
continue;
if (statfs(mnt->mnt_dir, &fs) == -1) {
log_print(LOG_WARN, "plugin mount: statfs(%s)", mnt->mnt_dir);
continue;
}
if (fs.f_blocks == 0)
continue;
slash = mnt->mnt_fsname;
while (slash && (slash = strchr(slash, '/'))) {
slash = strchr(slash, '/');
*slash++ = '_';
}
len = snprintf(filename, sizeof(filename), "mount%s.rrd", mnt->mnt_fsname);
if (len < 0 || len >= sizeof(filename)) {
log_print(LOG_WARN, "plugin mount: file name too long", mnt->mnt_fsname);
continue;
}
probe_submit(&plugin, filename, 0, "%lu:%lu",
fs.f_blocks * (fs.f_bsize /1024),
fs.f_bfree * (fs.f_bsize /1024));
}
endmntent(fp);
return 0;
}
struct sammler_plugin plugin = {
.name = "mount",
.interval = 10,
.probe = &probe,
.get_ds = &get_ds,
};