src/disk.c

   1 /**
   2  * collectd - src/disk.c
   3  * Copyright (C) 2005-2008  Florian octo Forster
   4  *
   5  * This program is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License as published by the
   7  * Free Software Foundation; only version 2 of the License is applicable.
   8  *
   9  * This program is distributed in the hope that it will be useful, but
  10  * WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License along
  15  * with this program; if not, write to the Free Software Foundation, Inc.,
  16  * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
  17  *
  18  * Authors:
  19  *   Florian octo Forster <octo at verplant.org>
  20  **/
  21
  22 #include "collectd.h"
  23 #include "common.h"
  24 #include "plugin.h"
  25 #include "utils_ignorelist.h"
  26
  27 #if HAVE_MACH_MACH_TYPES_H
  28 #  include <mach/mach_types.h>
  29 #endif
  30 #if HAVE_MACH_MACH_INIT_H
  31 #  include <mach/mach_init.h>
  32 #endif
  33 #if HAVE_MACH_MACH_ERROR_H
  34 #  include <mach/mach_error.h>
  35 #endif
  36 #if HAVE_MACH_MACH_PORT_H
  37 #  include <mach/mach_port.h>
  38 #endif
  39 #if HAVE_COREFOUNDATION_COREFOUNDATION_H
  40 #  include <CoreFoundation/CoreFoundation.h>
  41 #endif
  42 #if HAVE_IOKIT_IOKITLIB_H
  43 #  include <IOKit/IOKitLib.h>
  44 #endif
  45 #if HAVE_IOKIT_IOTYPES_H
  46 #  include <IOKit/IOTypes.h>
  47 #endif
  48 #if HAVE_IOKIT_STORAGE_IOBLOCKSTORAGEDRIVER_H
  49 #  include <IOKit/storage/IOBlockStorageDriver.h>
  50 #endif
  51 #if HAVE_IOKIT_IOBSD_H
  52 #  include <IOKit/IOBSD.h>
  53 #endif
  54
  55 #if HAVE_LIMITS_H
  56 # include <limits.h>
  57 #endif
  58 #ifndef UINT_MAX
  59 #  define UINT_MAX 4294967295U
  60 #endif
  61
  62 #if HAVE_IOKIT_IOKITLIB_H
  63 static mach_port_t io_master_port = MACH_PORT_NULL;
  64 /* #endif HAVE_IOKIT_IOKITLIB_H */
  65
  66 #elif KERNEL_LINUX
  67 typedef struct diskstats
  68 {
  69         char *name;
  70
  71         /* This overflows in roughly 1361 years */
  72         unsigned int poll_count;
  73
  74         counter_t read_sectors;
  75         counter_t write_sectors;
  76
  77         counter_t read_bytes;
  78         counter_t write_bytes;
  79
  80         counter_t read_ops;
  81         counter_t write_ops;
  82         counter_t read_time;
  83         counter_t write_time;
  84
  85         counter_t avg_read_time;
  86         counter_t avg_write_time;
  87
  88         struct diskstats *next;
  89 } diskstats_t;
  90
  91 static diskstats_t *disklist;
  92 /* #endif KERNEL_LINUX */
  93
  94 #elif HAVE_LIBKSTAT
  95 #define MAX_NUMDISK 256
  96 extern kstat_ctl_t *kc;
  97 static kstat_t *ksp[MAX_NUMDISK];
  98 static int numdisk = 0;
  99 /* #endif HAVE_LIBKSTAT */
 100
 101 #else
 102 # error "No applicable input method."
 103 #endif
 104
 105 static const char *config_keys[] =
 106 {
 107         "Disk",
 108         "IgnoreSelected"
 109 };
 110 static int config_keys_num = STATIC_ARRAY_SIZE (config_keys);
 111
 112 static ignorelist_t *ignorelist = NULL;
 113
 114 static int disk_config (const char *key, const char *value)
 115 {
 116   if (ignorelist == NULL)
 117     ignorelist = ignorelist_create (/* invert = */ 1);
 118   if (ignorelist == NULL)
 119     return (1);
 120
 121   if (strcasecmp ("Disk", key) == 0)
 122   {
 123     ignorelist_add (ignorelist, value);
 124   }
 125   else if (strcasecmp ("IgnoreSelected", key) == 0)
 126   {
 127     int invert = 1;
 128     if ((strcasecmp ("True", value) == 0)
 129         || (strcasecmp ("Yes", value) == 0)
 130         || (strcasecmp ("On", value) == 0))
 131       invert = 0;
 132     ignorelist_set_invert (ignorelist, invert);
 133   }
 134   else
 135   {
 136     return (-1);
 137   }
 138
 139   return (0);
 140 } /* int disk_config */
 141
 142 static int disk_init (void)
 143 {
 144 #if HAVE_IOKIT_IOKITLIB_H
 145         kern_return_t status;
 146
 147         if (io_master_port != MACH_PORT_NULL)
 148         {
 149                 mach_port_deallocate (mach_task_self (),
 150                                 io_master_port);
 151                 io_master_port = MACH_PORT_NULL;
 152         }
 153
 154         status = IOMasterPort (MACH_PORT_NULL, &io_master_port);
 155         if (status != kIOReturnSuccess)
 156         {
 157                 ERROR ("IOMasterPort failed: %s",
 158                                 mach_error_string (status));
 159                 io_master_port = MACH_PORT_NULL;
 160                 return (-1);
 161         }
 162 /* #endif HAVE_IOKIT_IOKITLIB_H */
 163
 164 #elif KERNEL_LINUX
 165         /* do nothing */
 166 /* #endif KERNEL_LINUX */
 167
 168 #elif HAVE_LIBKSTAT
 169         kstat_t *ksp_chain;
 170
 171         numdisk = 0;
 172
 173         if (kc == NULL)
 174                 return (-1);
 175
 176         for (numdisk = 0, ksp_chain = kc->kc_chain;
 177                         (numdisk < MAX_NUMDISK) && (ksp_chain != NULL);
 178                         ksp_chain = ksp_chain->ks_next)
 179         {
 180                 if (strncmp (ksp_chain->ks_class, "disk", 4)
 181                                 && strncmp (ksp_chain->ks_class, "partition", 9))
 182                         continue;
 183                 if (ksp_chain->ks_type != KSTAT_TYPE_IO)
 184                         continue;
 185                 ksp[numdisk++] = ksp_chain;
 186         }
 187 #endif /* HAVE_LIBKSTAT */
 188
 189         return (0);
 190 } /* int disk_init */
 191
 192 static void disk_submit (const char *plugin_instance,
 193                 const char *type,
 194                 counter_t read, counter_t write)
 195 {
 196         value_t values[2];
 197         value_list_t vl = VALUE_LIST_INIT;
 198
 199         /* Both `ignorelist' and `plugin_instance' may be NULL. */
 200         if (ignorelist_match (ignorelist, plugin_instance) != 0)
 201           return;
 202
 203         values[0].counter = read;
 204         values[1].counter = write;
 205
 206         vl.values = values;
 207         vl.values_len = 2;
 208         vl.time = time (NULL);
 209         strcpy (vl.host, hostname_g);
 210         strcpy (vl.plugin, "disk");
 211         strncpy (vl.plugin_instance, plugin_instance,
 212                         sizeof (vl.plugin_instance));
 213
 214         plugin_dispatch_values (type, &vl);
 215 } /* void disk_submit */
 216
 217 #if HAVE_IOKIT_IOKITLIB_H
 218 static signed long long dict_get_value (CFDictionaryRef dict, const char *key)
 219 {
 220         signed long long val_int;
 221         CFNumberRef      val_obj;
 222         CFStringRef      key_obj;
 223
 224         /* `key_obj' needs to be released. */
 225         key_obj = CFStringCreateWithCString (kCFAllocatorDefault, key,
 226                         kCFStringEncodingASCII);
 227         if (key_obj == NULL)
 228         {
 229                 DEBUG ("CFStringCreateWithCString (%s) failed.", key);
 230                 return (-1LL);
 231         }
 232
 233         /* get => we don't need to release (== free) the object */
 234         val_obj = (CFNumberRef) CFDictionaryGetValue (dict, key_obj);
 235
 236         CFRelease (key_obj);
 237
 238         if (val_obj == NULL)
 239         {
 240                 DEBUG ("CFDictionaryGetValue (%s) failed.", key);
 241                 return (-1LL);
 242         }
 243
 244         if (!CFNumberGetValue (val_obj, kCFNumberSInt64Type, &val_int))
 245         {
 246                 DEBUG ("CFNumberGetValue (%s) failed.", key);
 247                 return (-1LL);
 248         }
 249
 250         return (val_int);
 251 }
 252 #endif /* HAVE_IOKIT_IOKITLIB_H */
 253
 254 static int disk_read (void)
 255 {
 256 #if HAVE_IOKIT_IOKITLIB_H
 257         io_registry_entry_t     disk;
 258         io_registry_entry_t     disk_child;
 259         io_iterator_t           disk_list;
 260         CFDictionaryRef         props_dict;
 261         CFDictionaryRef         stats_dict;
 262         CFDictionaryRef         child_dict;
 263         kern_return_t           status;
 264
 265         signed long long read_ops;
 266         signed long long read_byt;
 267         signed long long read_tme;
 268         signed long long write_ops;
 269         signed long long write_byt;
 270         signed long long write_tme;
 271
 272         int  disk_major;
 273         int  disk_minor;
 274         char disk_name[64];
 275
 276         /* Get the list of all disk objects. */
 277         if (IOServiceGetMatchingServices (io_master_port,
 278                                 IOServiceMatching (kIOBlockStorageDriverClass),
 279                                 &disk_list) != kIOReturnSuccess)
 280         {
 281                 ERROR ("disk plugin: IOServiceGetMatchingServices failed.");
 282                 return (-1);
 283         }
 284
 285         while ((disk = IOIteratorNext (disk_list)) != 0)
 286         {
 287                 props_dict = NULL;
 288                 stats_dict = NULL;
 289                 child_dict = NULL;
 290
 291                 /* `disk_child' must be released */
 292                 if ((status = IORegistryEntryGetChildEntry (disk, kIOServicePlane, &disk_child))
 293                                 != kIOReturnSuccess)
 294                 {
 295                         /* This fails for example for DVD/CD drives.. */
 296                         DEBUG ("IORegistryEntryGetChildEntry (disk) failed: 0x%08x", status);
 297                         IOObjectRelease (disk);
 298                         continue;
 299                 }
 300
 301                 /* We create `props_dict' => we need to release it later */
 302                 if (IORegistryEntryCreateCFProperties (disk,
 303                                         (CFMutableDictionaryRef *) &props_dict,
 304                                         kCFAllocatorDefault,
 305                                         kNilOptions)
 306                                 != kIOReturnSuccess)
 307                 {
 308                         ERROR ("disk-plugin: IORegistryEntryCreateCFProperties failed.");
 309                         IOObjectRelease (disk_child);
 310                         IOObjectRelease (disk);
 311                         continue;
 312                 }
 313
 314                 if (props_dict == NULL)
 315                 {
 316                         DEBUG ("IORegistryEntryCreateCFProperties (disk) failed.");
 317                         IOObjectRelease (disk_child);
 318                         IOObjectRelease (disk);
 319                         continue;
 320                 }
 321
 322                 stats_dict = (CFDictionaryRef) CFDictionaryGetValue (props_dict,
 323                                 CFSTR (kIOBlockStorageDriverStatisticsKey));
 324
 325                 if (stats_dict == NULL)
 326                 {
 327                         DEBUG ("CFDictionaryGetValue (%s) failed.",
 328                                         kIOBlockStorageDriverStatisticsKey);
 329                         CFRelease (props_dict);
 330                         IOObjectRelease (disk_child);
 331                         IOObjectRelease (disk);
 332                         continue;
 333                 }
 334
 335                 if (IORegistryEntryCreateCFProperties (disk_child,
 336                                         (CFMutableDictionaryRef *) &child_dict,
 337                                         kCFAllocatorDefault,
 338                                         kNilOptions)
 339                                 != kIOReturnSuccess)
 340                 {
 341                         DEBUG ("IORegistryEntryCreateCFProperties (disk_child) failed.");
 342                         IOObjectRelease (disk_child);
 343                         CFRelease (props_dict);
 344                         IOObjectRelease (disk);
 345                         continue;
 346                 }
 347
 348                 /* kIOBSDNameKey */
 349                 disk_major = (int) dict_get_value (child_dict,
 350                                 kIOBSDMajorKey);
 351                 disk_minor = (int) dict_get_value (child_dict,
 352                                 kIOBSDMinorKey);
 353                 read_ops  = dict_get_value (stats_dict,
 354                                 kIOBlockStorageDriverStatisticsReadsKey);
 355                 read_byt  = dict_get_value (stats_dict,
 356                                 kIOBlockStorageDriverStatisticsBytesReadKey);
 357                 read_tme  = dict_get_value (stats_dict,
 358                                 kIOBlockStorageDriverStatisticsTotalReadTimeKey);
 359                 write_ops = dict_get_value (stats_dict,
 360                                 kIOBlockStorageDriverStatisticsWritesKey);
 361                 write_byt = dict_get_value (stats_dict,
 362                                 kIOBlockStorageDriverStatisticsBytesWrittenKey);
 363                 /* This property describes the number of nanoseconds spent
 364                  * performing writes since the block storage driver was
 365                  * instantiated. It is one of the statistic entries listed
 366                  * under the top-level kIOBlockStorageDriverStatisticsKey
 367                  * property table. It has an OSNumber value. */
 368                 write_tme = dict_get_value (stats_dict,
 369                                 kIOBlockStorageDriverStatisticsTotalWriteTimeKey);
 370
 371                 if (snprintf (disk_name, 64, "%i-%i", disk_major, disk_minor) >= 64)
 372                 {
 373                         DEBUG ("snprintf (major, minor) failed.");
 374                         CFRelease (child_dict);
 375                         IOObjectRelease (disk_child);
 376                         CFRelease (props_dict);
 377                         IOObjectRelease (disk);
 378                         continue;
 379                 }
 380                 DEBUG ("disk_name = %s", disk_name);
 381
 382                 if ((read_byt != -1LL) || (write_byt != -1LL))
 383                         disk_submit (disk_name, "disk_octets", read_byt, write_byt);
 384                 if ((read_ops != -1LL) || (write_ops != -1LL))
 385                         disk_submit (disk_name, "disk_ops", read_ops, write_ops);
 386                 if ((read_tme != -1LL) || (write_tme != -1LL))
 387                         disk_submit (disk_name, "disk_time",
 388                                         read_tme / 1000,
 389                                         write_tme / 1000);
 390
 391                 CFRelease (child_dict);
 392                 IOObjectRelease (disk_child);
 393                 CFRelease (props_dict);
 394                 IOObjectRelease (disk);
 395         }
 396         IOObjectRelease (disk_list);
 397 /* #endif HAVE_IOKIT_IOKITLIB_H */
 398
 399 #elif KERNEL_LINUX
 400         FILE *fh;
 401         char buffer[1024];
 402
 403         char *fields[32];
 404         int numfields;
 405         int fieldshift = 0;
 406
 407         int major = 0;
 408         int minor = 0;
 409
 410         counter_t read_sectors  = 0;
 411         counter_t write_sectors = 0;
 412
 413         counter_t read_ops      = 0;
 414         counter_t read_merged   = 0;
 415         counter_t read_time     = 0;
 416         counter_t write_ops     = 0;
 417         counter_t write_merged  = 0;
 418         counter_t write_time    = 0;
 419         int is_disk = 0;
 420
 421         diskstats_t *ds, *pre_ds;
 422
 423         if ((fh = fopen ("/proc/diskstats", "r")) == NULL)
 424         {
 425                 fh = fopen ("/proc/partitions", "r");
 426                 if (fh == NULL)
 427                 {
 428                         ERROR ("disk plugin: fopen (/proc/{diskstats,partitions}) failed.");
 429                         return (-1);
 430                 }
 431
 432                 /* Kernel is 2.4.* */
 433                 fieldshift = 1;
 434         }
 435
 436         while (fgets (buffer, sizeof (buffer), fh) != NULL)
 437         {
 438                 char *disk_name;
 439
 440                 numfields = strsplit (buffer, fields, 32);
 441
 442                 if ((numfields != (14 + fieldshift)) && (numfields != 7))
 443                         continue;
 444
 445                 major = atoll (fields[0]);
 446                 minor = atoll (fields[1]);
 447
 448                 disk_name = fields[2];
 449
 450                 for (ds = disklist, pre_ds = disklist; ds != NULL; pre_ds = ds, ds = ds->next)
 451                         if (strcmp (disk_name, ds->name) == 0)
 452                                 break;
 453
 454                 if (ds == NULL)
 455                 {
 456                         if ((ds = (diskstats_t *) calloc (1, sizeof (diskstats_t))) == NULL)
 457                                 continue;
 458
 459                         if ((ds->name = strdup (disk_name)) == NULL)
 460                         {
 461                                 free (ds);
 462                                 continue;
 463                         }
 464
 465                         if (pre_ds == NULL)
 466                                 disklist = ds;
 467                         else
 468                                 pre_ds->next = ds;
 469                 }
 470
 471                 is_disk = 0;
 472                 if (numfields == 7)
 473                 {
 474                         /* Kernel 2.6, Partition */
 475                         read_ops      = atoll (fields[3]);
 476                         read_sectors  = atoll (fields[4]);
 477                         write_ops     = atoll (fields[5]);
 478                         write_sectors = atoll (fields[6]);
 479                 }
 480                 else if (numfields == (14 + fieldshift))
 481                 {
 482                         read_ops  =  atoll (fields[3 + fieldshift]);
 483                         write_ops =  atoll (fields[7 + fieldshift]);
 484
 485                         read_sectors  = atoll (fields[5 + fieldshift]);
 486                         write_sectors = atoll (fields[9 + fieldshift]);
 487
 488                         if ((fieldshift == 0) || (minor == 0))
 489                         {
 490                                 is_disk = 1;
 491                                 read_merged  = atoll (fields[4 + fieldshift]);
 492                                 read_time    = atoll (fields[6 + fieldshift]);
 493                                 write_merged = atoll (fields[8 + fieldshift]);
 494                                 write_time   = atoll (fields[10+ fieldshift]);
 495                         }
 496                 }
 497                 else
 498                 {
 499                         DEBUG ("numfields = %i; => unknown file format.", numfields);
 500                         continue;
 501                 }
 502
 503                 {
 504                         counter_t diff_read_sectors;
 505                         counter_t diff_write_sectors;
 506
 507                 /* If the counter wraps around, it's only 32 bits.. */
 508                         if (read_sectors < ds->read_sectors)
 509                                 diff_read_sectors = 1 + read_sectors
 510                                         + (UINT_MAX - ds->read_sectors);
 511                         else
 512                                 diff_read_sectors = read_sectors - ds->read_sectors;
 513                         if (write_sectors < ds->write_sectors)
 514                                 diff_write_sectors = 1 + write_sectors
 515                                         + (UINT_MAX - ds->write_sectors);
 516                         else
 517                                 diff_write_sectors = write_sectors - ds->write_sectors;
 518
 519                         ds->read_bytes += 512 * diff_read_sectors;
 520                         ds->write_bytes += 512 * diff_write_sectors;
 521                         ds->read_sectors = read_sectors;
 522                         ds->write_sectors = write_sectors;
 523                 }
 524
 525                 /* Calculate the average time an io-op needs to complete */
 526                 if (is_disk)
 527                 {
 528                         counter_t diff_read_ops;
 529                         counter_t diff_write_ops;
 530                         counter_t diff_read_time;
 531                         counter_t diff_write_time;
 532
 533                         if (read_ops < ds->read_ops)
 534                                 diff_read_ops = 1 + read_ops
 535                                         + (UINT_MAX - ds->read_ops);
 536                         else
 537                                 diff_read_ops = read_ops - ds->read_ops;
 538                         DEBUG ("disk plugin: disk_name = %s; read_ops = %llu; "
 539                                         "ds->read_ops = %llu; diff_read_ops = %llu;",
 540                                         disk_name,
 541                                         read_ops, ds->read_ops, diff_read_ops);
 542
 543                         if (write_ops < ds->write_ops)
 544                                 diff_write_ops = 1 + write_ops
 545                                         + (UINT_MAX - ds->write_ops);
 546                         else
 547                                 diff_write_ops = write_ops - ds->write_ops;
 548
 549                         if (read_time < ds->read_time)
 550                                 diff_read_time = 1 + read_time
 551                                         + (UINT_MAX - ds->read_time);
 552                         else
 553                                 diff_read_time = read_time - ds->read_time;
 554
 555                         if (write_time < ds->write_time)
 556                                 diff_write_time = 1 + write_time
 557                                         + (UINT_MAX - ds->write_time);
 558                         else
 559                                 diff_write_time = write_time - ds->write_time;
 560
 561                         if (diff_read_ops != 0)
 562                                 ds->avg_read_time += (diff_read_time
 563                                                 + (diff_read_ops / 2))
 564                                         / diff_read_ops;
 565                         if (diff_write_ops != 0)
 566                                 ds->avg_write_time += (diff_write_time
 567                                                 + (diff_write_ops / 2))
 568                                         / diff_write_ops;
 569
 570                         ds->read_ops = read_ops;
 571                         ds->read_time = read_time;
 572                         ds->write_ops = write_ops;
 573                         ds->write_time = write_time;
 574                 } /* if (is_disk) */
 575
 576                 /* Don't write to the RRDs if we've just started.. */
 577                 ds->poll_count++;
 578                 if (ds->poll_count <= 2)
 579                 {
 580                         DEBUG ("disk plugin: (ds->poll_count = %i) <= "
 581                                         "(min_poll_count = 2); => Not writing.",
 582                                         ds->poll_count);
 583                         continue;
 584                 }
 585
 586                 if ((read_ops == 0) && (write_ops == 0))
 587                 {
 588                         DEBUG ("disk plugin: ((read_ops == 0) && "
 589                                         "(write_ops == 0)); => Not writing.");
 590                         continue;
 591                 }
 592
 593                 if ((ds->read_bytes != 0) || (ds->write_bytes != 0))
 594                         disk_submit (disk_name, "disk_octets",
 595                                         ds->read_bytes, ds->write_bytes);
 596
 597                 if ((ds->read_ops != 0) || (ds->write_ops != 0))
 598                         disk_submit (disk_name, "disk_ops",
 599                                         read_ops, write_ops);
 600
 601                 if ((ds->avg_read_time != 0) || (ds->avg_write_time != 0))
 602                         disk_submit (disk_name, "disk_time",
 603                                         ds->avg_read_time, ds->avg_write_time);
 604
 605                 if (is_disk)
 606                 {
 607                         disk_submit (disk_name, "disk_merged",
 608                                         read_merged, write_merged);
 609                 } /* if (is_disk) */
 610         } /* while (fgets (buffer, sizeof (buffer), fh) != NULL) */
 611
 612         fclose (fh);
 613 /* #endif defined(KERNEL_LINUX) */
 614
 615 #elif HAVE_LIBKSTAT
 616 # if HAVE_KSTAT_IO_T_WRITES && HAVE_KSTAT_IO_T_NWRITES && HAVE_KSTAT_IO_T_WTIME
 617 #  define KIO_ROCTETS reads
 618 #  define KIO_WOCTETS writes
 619 #  define KIO_ROPS    nreads
 620 #  define KIO_WOPS    nwrites
 621 #  define KIO_RTIME   rtime
 622 #  define KIO_WTIME   wtime
 623 # elif HAVE_KSTAT_IO_T_NWRITTEN && HAVE_KSTAT_IO_T_WRITES && HAVE_KSTAT_IO_T_WTIME
 624 #  define KIO_ROCTETS nread
 625 #  define KIO_WOCTETS nwritten
 626 #  define KIO_ROPS    reads
 627 #  define KIO_WOPS    writes
 628 #  define KIO_RTIME   rtime
 629 #  define KIO_WTIME   wtime
 630 # else
 631 #  error "kstat_io_t does not have the required members"
 632 # endif
 633         static kstat_io_t kio;
 634         int i;
 635
 636         if (kc == NULL)
 637                 return (-1);
 638
 639         for (i = 0; i < numdisk; i++)
 640         {
 641                 if (kstat_read (kc, ksp[i], &kio) == -1)
 642                         continue;
 643
 644                 if (strncmp (ksp[i]->ks_class, "disk", 4) == 0)
 645                 {
 646                         disk_submit (ksp[i]->ks_name, "disk_octets",
 647                                         kio.KIO_ROCTETS, kio.KIO_WOCTETS);
 648                         disk_submit (ksp[i]->ks_name, "disk_ops",
 649                                         kio.KIO_ROPS, kio.KIO_WOPS);
 650                         /* FIXME: Convert this to microseconds if necessary */
 651                         disk_submit (ksp[i]->ks_name, "disk_time",
 652                                         kio.KIO_RTIME, kio.KIO_WTIME);
 653                 }
 654                 else if (strncmp (ksp[i]->ks_class, "partition", 9) == 0)
 655                 {
 656                         disk_submit (ksp[i]->ks_name, "disk_octets",
 657                                         kio.KIO_ROCTETS, kio.KIO_WOCTETS);
 658                         disk_submit (ksp[i]->ks_name, "disk_ops",
 659                                         kio.KIO_ROPS, kio.KIO_WOPS);
 660                 }
 661         }
 662 #endif /* defined(HAVE_LIBKSTAT) */
 663
 664         return (0);
 665 } /* int disk_read */
 666
 667 void module_register (void)
 668 {
 669   plugin_register_config ("disk", disk_config,
 670       config_keys, config_keys_num);
 671   plugin_register_init ("disk", disk_init);
 672   plugin_register_read ("disk", disk_read);
 673 } /* void module_register */