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/*
* NetBSD Kernel PMDA - disk metrics
*
* Copyright (c) 2012,2013 Ken McDonell. All Rights Reserved.
*
* 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
*/
#include "pmapi.h"
#include "impl.h"
#include "pmda.h"
#include "netbsd.h"
#if 0
#include <devstat.h>
struct devinfo devinfo = { 0 };
struct statinfo statinfo;
#endif
void
refresh_disk_metrics(void)
{
#if 0
static int init_done = 0;
int i;
int sts;
if (!init_done) {
sts = devstat_checkversion(NULL);
if (sts != 0) {
fprintf(stderr, "refresh_disk_metrics: devstat_checkversion: failed! %s\n", devstat_errbuf);
exit(1);
}
statinfo.dinfo = &devinfo;
init_done = 1;
}
sts = devstat_getdevs(NULL, &statinfo);
if (sts < 0) {
fprintf(stderr, "refresh_disk_metrics: devstat_getdevs: %s\n", strerror(errno));
exit(1);
}
else if (sts == 1) {
/*
* First call, else devstat[] list has changed
*/
struct devstat *dsp;
char iname[DEVSTAT_NAME_LEN+6];
pmdaCacheOp(indomtab[DISK_INDOM].it_indom, PMDA_CACHE_INACTIVE);
for (i = 0; i < devinfo.numdevs; i++) {
dsp = &devinfo.devices[i];
/*
* Skip entries that are not interesting ... only include
* "da" (direct access) disks at this stage
*/
if (strcmp(dsp->device_name, "da") != 0)
continue;
snprintf(iname, sizeof(iname), "%s%d", dsp->device_name, dsp->unit_number);
sts = pmdaCacheLookupName(indomtab[DISK_INDOM].it_indom, iname, NULL, NULL);
if (sts == PMDA_CACHE_ACTIVE) {
int j;
fprintf(stderr, "refresh_disk_metrics: Warning: duplicate name (%s) in disk indom\n", iname);
for (j = 0; j < devinfo.numdevs; j++) {
dsp = &devinfo.devices[j];
fprintf(stderr, " devinfo[%d]: %s%d\n", j, dsp->device_name, dsp->unit_number);
}
continue;
}
else {
/* new entry or reactivate an existing one */
pmdaCacheStore(indomtab[DISK_INDOM].it_indom, PMDA_CACHE_ADD, iname, (void *)dsp);
}
}
}
#endif
}
int
do_disk_metrics(pmdaMetric *mdesc, unsigned int inst, pmAtomValue *atom)
{
#if 0
struct devstat *dsp;
int sts;
if (inst != PM_IN_NULL) {
/*
* per-disk metrics
*/
sts = pmdaCacheLookup(indomtab[DISK_INDOM].it_indom, inst, NULL, (void **)&dsp);
if (sts == PMDA_CACHE_ACTIVE) {
sts = 1;
/* cluster and domain already checked, just need item ... */
switch (pmid_item(mdesc->m_desc.pmid)) {
case 0: /* disk.dev.read */
atom->ull = dsp->operations[DEVSTAT_READ];
break;
case 1: /* disk.dev.write */
atom->ull = dsp->operations[DEVSTAT_WRITE];
break;
case 2: /* disk.dev.total */
atom->ull = dsp->operations[DEVSTAT_READ] + dsp->operations[DEVSTAT_WRITE];
break;
case 3: /* disk.dev.read_bytes */
atom->ull = dsp->bytes[DEVSTAT_READ];
break;
case 4: /* disk.dev.write_bytes */
atom->ull = dsp->bytes[DEVSTAT_WRITE];
break;
case 5: /* disk.dev.total_bytes */
atom->ull = dsp->bytes[DEVSTAT_READ] + dsp->bytes[DEVSTAT_WRITE];
break;
case 12: /* disk.dev.blkread */
atom->ull = dsp->block_size == 0 ? 0 : dsp->bytes[DEVSTAT_READ] / dsp->block_size;
break;
case 13: /* disk.dev.blkwrite */
atom->ull = dsp->block_size == 0 ? 0 : dsp->bytes[DEVSTAT_WRITE] / dsp->block_size;
break;
case 14: /* disk.dev.blktotal */
atom->ull = dsp->block_size == 0 ? 0 : (dsp->bytes[DEVSTAT_READ] + dsp->bytes[DEVSTAT_WRITE]) / dsp->block_size;
break;
default:
sts = PM_ERR_PMID;
break;
}
}
else
sts = 0;
}
else {
/*
* all-disk summary metrics
*/
int i;
atom->ull = 0;
sts = 1;
pmdaCacheOp(indomtab[DISK_INDOM].it_indom, PMDA_CACHE_WALK_REWIND);
while (sts == 1 && (i = pmdaCacheOp(indomtab[DISK_INDOM].it_indom, PMDA_CACHE_WALK_NEXT)) >= 0) {
int lsts;
lsts = pmdaCacheLookup(indomtab[DISK_INDOM].it_indom, i, NULL, (void **)&dsp);
if (lsts == PMDA_CACHE_ACTIVE) {
/* cluster and domain already checked, just need item ... */
switch (pmid_item(mdesc->m_desc.pmid)) {
case 6: /* disk.all.read */
atom->ull += dsp->operations[DEVSTAT_READ];
break;
case 7: /* disk.all.write */
atom->ull += dsp->operations[DEVSTAT_WRITE];
break;
case 8: /* disk.all.total */
atom->ull += dsp->operations[DEVSTAT_READ] + dsp->operations[DEVSTAT_WRITE];
break;
case 9: /* disk.all.read_bytes */
atom->ull += dsp->bytes[DEVSTAT_READ];
break;
case 10: /* disk.all.write_bytes */
atom->ull += dsp->bytes[DEVSTAT_WRITE];
break;
case 11: /* disk.all.total_bytes */
atom->ull += dsp->bytes[DEVSTAT_READ] + dsp->bytes[DEVSTAT_WRITE];
break;
case 15: /* disk.all.blkread */
atom->ull += dsp->block_size == 0 ? 0 : dsp->bytes[DEVSTAT_READ] / dsp->block_size;
break;
case 16: /* disk.all.blkwrite */
atom->ull += dsp->block_size == 0 ? 0 : dsp->bytes[DEVSTAT_WRITE] / dsp->block_size;
break;
case 17: /* disk.all.blktotal */
atom->ull += dsp->block_size == 0 ? 0 : (dsp->bytes[DEVSTAT_READ] + dsp->bytes[DEVSTAT_WRITE]) / dsp->block_size;
break;
default:
sts = PM_ERR_PMID;
break;
}
}
}
if (i < 0 && i != -1)
/* not end of indom from cache walk, some other error */
sts = i;
}
return sts;
#else
return PM_ERR_PMID;
#endif
}
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