1 /*****************************************************************************
2 * RRDtool 1.4.3 Copyright by Tobi Oetiker, 1997-2010
3 *****************************************************************************
4 * rrd_create.c creates new rrds
5 *****************************************************************************/
12 #include "rrd_rpncalc.h"
14 #include "rrd_client.h"
16 #include "rrd_is_thread_safe.h"
22 unsigned long FnvHash(
24 int create_hw_contingent_rras(
26 unsigned short period,
27 unsigned long hashed_name);
33 static void rrd_free2(
34 rrd_t *rrd); /* our onwn copy, immmune to mmap */
40 struct option long_options[] = {
41 {"start", required_argument, 0, 'b'},
42 {"step", required_argument, 0, 's'},
43 {"daemon", required_argument, 0, 'd'},
44 {"no-overwrite", no_argument, 0, 'O'},
49 time_t last_up = time(NULL) - 10;
50 unsigned long pdp_step = 300;
51 rrd_time_value_t last_up_tv;
52 char *parsetime_error = NULL;
55 char * opt_daemon = NULL;
56 int opt_no_overwrite = 0;
59 opterr = 0; /* initialize getopt */
62 opt = getopt_long(argc, argv, "Ob:s:d:", long_options, &option_index);
69 if (opt_daemon != NULL)
71 opt_daemon = strdup (optarg);
72 if (opt_daemon == NULL)
74 rrd_set_error ("strdup failed.");
80 if ((parsetime_error = rrd_parsetime(optarg, &last_up_tv))) {
81 rrd_set_error("start time: %s", parsetime_error);
84 if (last_up_tv.type == RELATIVE_TO_END_TIME ||
85 last_up_tv.type == RELATIVE_TO_START_TIME) {
86 rrd_set_error("specifying time relative to the 'start' "
87 "or 'end' makes no sense here");
91 last_up = mktime(&last_up_tv.tm) +last_up_tv.offset;
93 if (last_up < 3600 * 24 * 365 * 10) {
95 ("the first entry to the RRD should be after 1980");
101 long_tmp = atol(optarg);
103 rrd_set_error("step size should be no less than one second");
110 opt_no_overwrite = 1;
115 rrd_set_error("unknown option '%c'", optopt);
117 rrd_set_error("unknown option '%s'", argv[optind - 1]);
121 if (optind == argc) {
122 rrd_set_error("need name of an rrd file to create");
126 rrdc_connect (opt_daemon);
127 if (rrdc_is_connected (opt_daemon)) {
128 rc = rrdc_create (argv[optind],
129 pdp_step, last_up, opt_no_overwrite,
130 argc - optind - 1, (const char **) (argv + optind + 1));
132 rc = rrd_create_r2(argv[optind],
133 pdp_step, last_up, opt_no_overwrite,
134 argc - optind - 1, (const char **) (argv + optind + 1));
141 /* For backwards compatibility with previous API. Use rrd_create_r2 if you
142 need to have the no_overwrite parameter. */
144 const char *filename,
145 unsigned long pdp_step,
150 return rrd_create_r2(filename,pdp_step,last_up,0,argc,argv);
153 const char *filename,
154 unsigned long pdp_step,
164 char dummychar1[2], dummychar2[2];
165 unsigned short token_idx, error_flag, period = 0;
166 unsigned long hashed_name;
168 /* clear any previous errors */
174 if ((rrd.stat_head = (stat_head_t*)calloc(1, sizeof(stat_head_t))) == NULL) {
175 rrd_set_error("allocating rrd.stat_head");
181 if ((rrd.live_head = (live_head_t*)calloc(1, sizeof(live_head_t))) == NULL) {
182 rrd_set_error("allocating rrd.live_head");
187 /* set some defaults */
188 strcpy(rrd.stat_head->cookie, RRD_COOKIE);
189 strcpy(rrd.stat_head->version, RRD_VERSION3); /* by default we are still version 3 */
190 rrd.stat_head->float_cookie = FLOAT_COOKIE;
191 rrd.stat_head->ds_cnt = 0; /* this will be adjusted later */
192 rrd.stat_head->rra_cnt = 0; /* ditto */
193 rrd.stat_head->pdp_step = pdp_step; /* 5 minute default */
195 /* a default value */
199 rrd.live_head->last_up = last_up;
201 /* optind points to the first non-option command line arg,
202 * in this case, the file name. */
203 /* Compute the FNV hash value (used by SEASONAL and DEVSEASONAL
205 hashed_name = FnvHash(filename);
206 for (i = 0; i < argc; i++) {
209 if (strncmp(argv[i], "DS:", 3) == 0) {
210 size_t old_size = sizeof(ds_def_t) * (rrd.stat_head->ds_cnt);
212 if ((rrd.ds_def = (ds_def_t*)rrd_realloc(rrd.ds_def,
213 old_size + sizeof(ds_def_t))) ==
215 rrd_set_error("allocating rrd.ds_def");
219 memset(&rrd.ds_def[rrd.stat_head->ds_cnt], 0, sizeof(ds_def_t));
220 /* extract the name and type */
221 switch (sscanf(&argv[i][3],
222 DS_NAM_FMT "%1[:]" DST_FMT "%1[:]%n",
223 rrd.ds_def[rrd.stat_head->ds_cnt].ds_nam,
225 rrd.ds_def[rrd.stat_head->ds_cnt].dst,
226 dummychar2, &offset)) {
229 rrd_set_error("Invalid DS name in [%s]",&argv[i][3]);
233 rrd_set_error("Invalid DS type in [%s]",&argv[i][3]);
235 case 4: /* (%n may or may not be counted) */
236 case 5: /* check for duplicate datasource names */
237 for (ii = 0; ii < rrd.stat_head->ds_cnt; ii++)
238 if (strcmp(rrd.ds_def[rrd.stat_head->ds_cnt].ds_nam,
239 rrd.ds_def[ii].ds_nam) == 0)
240 rrd_set_error("Duplicate DS name: %s",
241 rrd.ds_def[ii].ds_nam);
242 /* DS_type may be valid or not. Checked later */
245 rrd_set_error("invalid DS format");
247 if (rrd_test_error()) {
252 /* parse the remainder of the arguments */
253 switch (dst_conv(rrd.ds_def[rrd.stat_head->ds_cnt].dst)) {
258 parseGENERIC_DS(&argv[i][offset + 3], &rrd,
259 rrd.stat_head->ds_cnt);
262 parseCDEF_DS(&argv[i][offset + 3], &rrd,
263 rrd.stat_head->ds_cnt);
266 rrd_set_error("invalid DS type specified");
270 if (rrd_test_error()) {
274 rrd.stat_head->ds_cnt++;
275 } else if (strncmp(argv[i], "RRA:", 4) == 0) {
279 size_t old_size = sizeof(rra_def_t) * (rrd.stat_head->rra_cnt);
282 if ((rrd.rra_def = (rra_def_t*)rrd_realloc(rrd.rra_def,
283 old_size + sizeof(rra_def_t))) ==
285 rrd_set_error("allocating rrd.rra_def");
289 memset(&rrd.rra_def[rrd.stat_head->rra_cnt], 0,
292 argvcopy = strdup(argv[i]);
293 token = strtok_r(&argvcopy[4], ":", &tokptr);
294 token_idx = error_flag = 0;
296 while (token != NULL) {
299 if (sscanf(token, CF_NAM_FMT,
300 rrd.rra_def[rrd.stat_head->rra_cnt].cf_nam) !=
302 rrd_set_error("Failed to parse CF name");
303 cf_id = cf_conv(rrd.rra_def[rrd.stat_head->rra_cnt].cf_nam);
306 strcpy(rrd.stat_head->version, RRD_VERSION); /* MHWPREDICT causes Version 4 */
309 /* initialize some parameters */
310 rrd.rra_def[rrd.stat_head->rra_cnt].par[RRA_hw_alpha].
312 rrd.rra_def[rrd.stat_head->rra_cnt].par[RRA_hw_beta].
314 rrd.rra_def[rrd.stat_head->rra_cnt].
315 par[RRA_dependent_rra_idx].u_cnt =
316 rrd.stat_head->rra_cnt;
321 if (cf_id == CF_SEASONAL){
324 /* initialize some parameters */
325 rrd.rra_def[rrd.stat_head->rra_cnt].
326 par[RRA_seasonal_gamma].u_val = 0.1;
327 rrd.rra_def[rrd.stat_head->rra_cnt].
328 par[RRA_seasonal_smoothing_window].u_val = 0.05;
331 if (cf_id == CF_DEVPREDICT){
334 rrd.rra_def[rrd.stat_head->rra_cnt].
335 par[RRA_dependent_rra_idx].u_cnt = -1;
339 rrd.rra_def[rrd.stat_head->rra_cnt].
340 par[RRA_delta_pos].u_val = 2.0;
341 rrd.rra_def[rrd.stat_head->rra_cnt].
342 par[RRA_delta_neg].u_val = 2.0;
343 rrd.rra_def[rrd.stat_head->rra_cnt].
344 par[RRA_window_len].u_cnt = 3;
345 rrd.rra_def[rrd.stat_head->rra_cnt].
346 par[RRA_failure_threshold].u_cnt = 2;
347 rrd.rra_def[rrd.stat_head->rra_cnt].
348 par[RRA_dependent_rra_idx].u_cnt = -1;
350 /* invalid consolidation function */
353 ("Unrecognized consolidation function %s",
354 rrd.rra_def[rrd.stat_head->rra_cnt].cf_nam);
358 /* default: 1 pdp per cdp */
359 rrd.rra_def[rrd.stat_head->rra_cnt].pdp_cnt = 1;
363 (rrd.rra_def[rrd.stat_head->rra_cnt].cf_nam)) {
370 row_cnt = atoi(token);
372 rrd_set_error("Invalid row count: %i", row_cnt);
373 rrd.rra_def[rrd.stat_head->rra_cnt].row_cnt = row_cnt;
376 rrd.rra_def[rrd.stat_head->rra_cnt].
377 par[RRA_cdp_xff_val].u_val = atof(token);
378 if (rrd.rra_def[rrd.stat_head->rra_cnt].
379 par[RRA_cdp_xff_val].u_val < 0.0
380 || rrd.rra_def[rrd.stat_head->rra_cnt].
381 par[RRA_cdp_xff_val].u_val >= 1.0)
383 ("Invalid xff: must be between 0 and 1");
389 (rrd.rra_def[rrd.stat_head->rra_cnt].cf_nam)) {
392 rrd.rra_def[rrd.stat_head->rra_cnt].par[RRA_hw_alpha].
394 if (atof(token) <= 0.0 || atof(token) >= 1.0)
396 ("Invalid alpha: must be between 0 and 1");
400 rrd.rra_def[rrd.stat_head->rra_cnt].
401 par[RRA_seasonal_gamma].u_val = atof(token);
402 if (atof(token) <= 0.0 || atof(token) >= 1.0)
404 ("Invalid gamma: must be between 0 and 1");
405 rrd.rra_def[rrd.stat_head->rra_cnt].
406 par[RRA_seasonal_smooth_idx].u_cnt =
408 rrd.rra_def[rrd.stat_head->rra_cnt].row_cnt;
411 /* specifies the # of violations that constitutes the failure threshold */
412 rrd.rra_def[rrd.stat_head->rra_cnt].
413 par[RRA_failure_threshold].u_cnt = atoi(token);
415 || atoi(token) > MAX_FAILURES_WINDOW_LEN)
417 ("Failure threshold is out of range %d, %d",
418 1, MAX_FAILURES_WINDOW_LEN);
421 /* specifies the index (1-based) of CF_DEVSEASONAL array
422 * associated with this CF_DEVPREDICT array. */
423 rrd.rra_def[rrd.stat_head->rra_cnt].
424 par[RRA_dependent_rra_idx].u_cnt =
428 rrd.rra_def[rrd.stat_head->rra_cnt].pdp_cnt =
431 rrd_set_error("Invalid step: must be >= 1");
437 (rrd.rra_def[rrd.stat_head->rra_cnt].cf_nam)) {
440 rrd.rra_def[rrd.stat_head->rra_cnt].par[RRA_hw_beta].
442 if (atof(token) < 0.0 || atof(token) > 1.0)
444 ("Invalid beta: must be between 0 and 1");
448 /* specifies the index (1-based) of CF_HWPREDICT array
449 * associated with this CF_DEVSEASONAL or CF_SEASONAL array.
451 rrd.rra_def[rrd.stat_head->rra_cnt].
452 par[RRA_dependent_rra_idx].u_cnt =
456 /* specifies the window length */
457 rrd.rra_def[rrd.stat_head->rra_cnt].
458 par[RRA_window_len].u_cnt = atoi(token);
460 || atoi(token) > MAX_FAILURES_WINDOW_LEN)
462 ("Window length is out of range %d, %d", 1,
463 MAX_FAILURES_WINDOW_LEN);
464 /* verify that window length exceeds the failure threshold */
465 if (rrd.rra_def[rrd.stat_head->rra_cnt].
466 par[RRA_window_len].u_cnt <
467 rrd.rra_def[rrd.stat_head->rra_cnt].
468 par[RRA_failure_threshold].u_cnt)
470 ("Window length is shorter than the failure threshold");
473 /* shouldn't be any more arguments */
475 ("Unexpected extra argument for consolidation function DEVPREDICT");
478 row_cnt = atoi(token);
480 rrd_set_error("Invalid row count: %i", row_cnt);
481 rrd.rra_def[rrd.stat_head->rra_cnt].row_cnt = row_cnt;
487 (rrd.rra_def[rrd.stat_head->rra_cnt].cf_nam)) {
489 /* specifies the index (1-based) of CF_DEVSEASONAL array
490 * associated with this CF_DEVFAILURES array. */
491 rrd.rra_def[rrd.stat_head->rra_cnt].
492 par[RRA_dependent_rra_idx].u_cnt =
497 /* optional smoothing window */
498 if (sscanf(token, "smoothing-window=%lf",
499 &(rrd.rra_def[rrd.stat_head->rra_cnt].
500 par[RRA_seasonal_smoothing_window].
502 strcpy(rrd.stat_head->version, RRD_VERSION); /* smoothing-window causes Version 4 */
503 if (rrd.rra_def[rrd.stat_head->rra_cnt].
504 par[RRA_seasonal_smoothing_window].u_val < 0.0
505 || rrd.rra_def[rrd.stat_head->rra_cnt].
506 par[RRA_seasonal_smoothing_window].u_val >
509 ("Invalid smoothing-window %f: must be between 0 and 1",
510 rrd.rra_def[rrd.stat_head->rra_cnt].
511 par[RRA_seasonal_smoothing_window].
515 rrd_set_error("Invalid option %s", token);
520 /* length of the associated CF_SEASONAL and CF_DEVSEASONAL arrays. */
521 period = atoi(token);
523 rrd.rra_def[rrd.stat_head->rra_cnt].row_cnt)
525 ("Length of seasonal cycle exceeds length of HW prediction array");
528 /* shouldn't be any more arguments */
530 ("Unexpected extra argument for consolidation function %s",
531 rrd.rra_def[rrd.stat_head->rra_cnt].cf_nam);
536 /* If we are here, this must be a CF_HWPREDICT RRA.
537 * Specifies the index (1-based) of CF_SEASONAL array
538 * associated with this CF_HWPREDICT array. If this argument
539 * is missing, then the CF_SEASONAL, CF_DEVSEASONAL, CF_DEVPREDICT,
541 * arrays are created automatically. */
542 rrd.rra_def[rrd.stat_head->rra_cnt].
543 par[RRA_dependent_rra_idx].u_cnt = atoi(token) - 1;
546 /* should never get here */
547 rrd_set_error("Unknown error");
550 if (rrd_test_error()) {
551 /* all errors are unrecoverable */
556 token = strtok_r(NULL, ":", &tokptr);
560 if (token_idx < token_min){
561 rrd_set_error("Expected at least %i arguments for RRA but got %i",token_min,token_idx);
567 "Creating RRA CF: %s, dep idx %lu, current idx %lu\n",
568 rrd.rra_def[rrd.stat_head->rra_cnt].cf_nam,
569 rrd.rra_def[rrd.stat_head->rra_cnt].
570 par[RRA_dependent_rra_idx].u_cnt, rrd.stat_head->rra_cnt);
572 /* should we create CF_SEASONAL, CF_DEVSEASONAL, and CF_DEVPREDICT? */
573 if ((cf_conv(rrd.rra_def[rrd.stat_head->rra_cnt].cf_nam) ==
575 || cf_conv(rrd.rra_def[rrd.stat_head->rra_cnt].cf_nam) ==
577 && rrd.rra_def[rrd.stat_head->rra_cnt].
578 par[RRA_dependent_rra_idx].u_cnt == rrd.stat_head->rra_cnt) {
580 fprintf(stderr, "Creating HW contingent RRAs\n");
582 if (create_hw_contingent_rras(&rrd, period, hashed_name) ==
584 rrd_set_error("creating contingent RRA");
589 rrd.stat_head->rra_cnt++;
591 rrd_set_error("can't parse argument '%s'", argv[i]);
598 if (rrd.stat_head->rra_cnt < 1) {
599 rrd_set_error("you must define at least one Round Robin Archive");
604 if (rrd.stat_head->ds_cnt < 1) {
605 rrd_set_error("you must define at least one Data Source");
609 return rrd_create_fn(filename, &rrd, no_overwrite);
612 void parseGENERIC_DS(
617 char minstr[DS_NAM_SIZE], maxstr[DS_NAM_SIZE];
623 temp = sscanf(def,"%lu:%18[^:]:%18[^:]",
624 &(rrd -> ds_def[ds_idx].par[DS_mrhb_cnt].u_cnt),
627 old_locale = setlocale(LC_NUMERIC, NULL);
628 setlocale(LC_NUMERIC, "C");
629 if (sscanf(def, "%lu:%18[^:]:%18[^:]",
630 &(rrd->ds_def[ds_idx].par[DS_mrhb_cnt].u_cnt),
631 minstr, maxstr) == 3) {
632 if (minstr[0] == 'U' && minstr[1] == 0)
633 rrd->ds_def[ds_idx].par[DS_min_val].u_val = DNAN;
635 rrd->ds_def[ds_idx].par[DS_min_val].u_val = atof(minstr);
637 if (maxstr[0] == 'U' && maxstr[1] == 0)
638 rrd->ds_def[ds_idx].par[DS_max_val].u_val = DNAN;
640 rrd->ds_def[ds_idx].par[DS_max_val].u_val = atof(maxstr);
642 if (!isnan(rrd->ds_def[ds_idx].par[DS_min_val].u_val) &&
643 !isnan(rrd->ds_def[ds_idx].par[DS_max_val].u_val) &&
644 rrd->ds_def[ds_idx].par[DS_min_val].u_val
645 >= rrd->ds_def[ds_idx].par[DS_max_val].u_val) {
646 rrd_set_error("min must be less than max in DS definition");
647 setlocale(LC_NUMERIC, old_locale);
651 rrd_set_error("failed to parse data source %s", def);
653 setlocale(LC_NUMERIC, old_locale);
656 /* Create the CF_DEVPREDICT, CF_DEVSEASONAL, CF_SEASONAL, and CF_FAILURES RRAs
657 * associated with a CF_HWPREDICT RRA. */
658 int create_hw_contingent_rras(
660 unsigned short period,
661 unsigned long hashed_name)
664 rra_def_t *current_rra;
666 /* save index to CF_HWPREDICT */
667 unsigned long hw_index = rrd->stat_head->rra_cnt;
669 /* advance the pointer */
670 (rrd->stat_head->rra_cnt)++;
671 /* allocate the memory for the 4 contingent RRAs */
672 old_size = sizeof(rra_def_t) * (rrd->stat_head->rra_cnt);
673 if ((rrd->rra_def = (rra_def_t*)rrd_realloc(rrd->rra_def,
674 old_size + 4 * sizeof(rra_def_t))) ==
677 rrd_set_error("allocating rrd.rra_def");
681 memset(&(rrd->rra_def[rrd->stat_head->rra_cnt]), 0,
682 4 * sizeof(rra_def_t));
684 /* create the CF_SEASONAL RRA */
685 current_rra = &(rrd->rra_def[rrd->stat_head->rra_cnt]);
686 strcpy(current_rra->cf_nam, "SEASONAL");
687 current_rra->row_cnt = period;
688 current_rra->par[RRA_seasonal_smooth_idx].u_cnt = hashed_name % period;
689 current_rra->pdp_cnt = 1;
690 current_rra->par[RRA_seasonal_gamma].u_val =
691 rrd->rra_def[hw_index].par[RRA_hw_alpha].u_val;
692 current_rra->par[RRA_dependent_rra_idx].u_cnt = hw_index;
693 rrd->rra_def[hw_index].par[RRA_dependent_rra_idx].u_cnt =
694 rrd->stat_head->rra_cnt;
696 /* create the CF_DEVSEASONAL RRA */
697 (rrd->stat_head->rra_cnt)++;
698 current_rra = &(rrd->rra_def[rrd->stat_head->rra_cnt]);
699 strcpy(current_rra->cf_nam, "DEVSEASONAL");
700 current_rra->row_cnt = period;
701 current_rra->par[RRA_seasonal_smooth_idx].u_cnt = hashed_name % period;
702 current_rra->pdp_cnt = 1;
703 current_rra->par[RRA_seasonal_gamma].u_val =
704 rrd->rra_def[hw_index].par[RRA_hw_alpha].u_val;
705 current_rra->par[RRA_dependent_rra_idx].u_cnt = hw_index;
707 /* create the CF_DEVPREDICT RRA */
708 (rrd->stat_head->rra_cnt)++;
709 current_rra = &(rrd->rra_def[rrd->stat_head->rra_cnt]);
710 strcpy(current_rra->cf_nam, "DEVPREDICT");
711 current_rra->row_cnt = (rrd->rra_def[hw_index]).row_cnt;
712 current_rra->pdp_cnt = 1;
713 current_rra->par[RRA_dependent_rra_idx].u_cnt = hw_index + 2; /* DEVSEASONAL */
715 /* create the CF_FAILURES RRA */
716 (rrd->stat_head->rra_cnt)++;
717 current_rra = &(rrd->rra_def[rrd->stat_head->rra_cnt]);
718 strcpy(current_rra->cf_nam, "FAILURES");
719 current_rra->row_cnt = period;
720 current_rra->pdp_cnt = 1;
721 current_rra->par[RRA_delta_pos].u_val = 2.0;
722 current_rra->par[RRA_delta_neg].u_val = 2.0;
723 current_rra->par[RRA_failure_threshold].u_cnt = 7;
724 current_rra->par[RRA_window_len].u_cnt = 9;
725 current_rra->par[RRA_dependent_rra_idx].u_cnt = hw_index + 2; /* DEVSEASONAL */
729 /* create and empty rrd file according to the specs given */
732 const char *file_name,
737 rrd_value_t *unknown;
739 rrd_file_t *rrd_file_dn;
741 unsigned rrd_flags = RRD_READWRITE | RRD_CREAT;
744 rrd_flags |= RRD_EXCL ;
748 for (i = 0; i < rrd->stat_head->rra_cnt; i++)
749 unkn_cnt += rrd->stat_head->ds_cnt * rrd->rra_def[i].row_cnt;
751 if ((rrd_file_dn = rrd_open(file_name, rrd, rrd_flags)) == NULL) {
752 rrd_set_error("creating '%s': %s", file_name, rrd_strerror(errno));
757 rrd_write(rrd_file_dn, rrd->stat_head, sizeof(stat_head_t));
759 rrd_write(rrd_file_dn, rrd->ds_def, sizeof(ds_def_t) * rrd->stat_head->ds_cnt);
761 rrd_write(rrd_file_dn, rrd->rra_def,
762 sizeof(rra_def_t) * rrd->stat_head->rra_cnt);
764 rrd_write(rrd_file_dn, rrd->live_head, sizeof(live_head_t));
766 if ((rrd->pdp_prep = (pdp_prep_t*)calloc(1, sizeof(pdp_prep_t))) == NULL) {
767 rrd_set_error("allocating pdp_prep");
769 rrd_close(rrd_file_dn);
773 strcpy(rrd->pdp_prep->last_ds, "U");
775 rrd->pdp_prep->scratch[PDP_val].u_val = 0.0;
776 rrd->pdp_prep->scratch[PDP_unkn_sec_cnt].u_cnt =
777 rrd->live_head->last_up % rrd->stat_head->pdp_step;
779 for (i = 0; i < rrd->stat_head->ds_cnt; i++)
780 rrd_write(rrd_file_dn, rrd->pdp_prep, sizeof(pdp_prep_t));
782 if ((rrd->cdp_prep = (cdp_prep_t*)calloc(1, sizeof(cdp_prep_t))) == NULL) {
783 rrd_set_error("allocating cdp_prep");
785 rrd_close(rrd_file_dn);
790 for (i = 0; i < rrd->stat_head->rra_cnt; i++) {
791 switch (cf_conv(rrd->rra_def[i].cf_nam)) {
794 init_hwpredict_cdp(rrd->cdp_prep);
798 init_seasonal_cdp(rrd->cdp_prep);
801 /* initialize violation history to 0 */
802 for (ii = 0; ii < MAX_CDP_PAR_EN; ii++) {
803 /* We can zero everything out, by setting u_val to the
804 * NULL address. Each array entry in scratch is 8 bytes
805 * (a double), but u_cnt only accessed 4 bytes (long) */
806 rrd->cdp_prep->scratch[ii].u_val = 0.0;
810 /* can not be zero because we don't know anything ... */
811 rrd->cdp_prep->scratch[CDP_val].u_val = DNAN;
812 /* startup missing pdp count */
813 rrd->cdp_prep->scratch[CDP_unkn_pdp_cnt].u_cnt =
814 ((rrd->live_head->last_up -
815 rrd->pdp_prep->scratch[PDP_unkn_sec_cnt].u_cnt)
816 % (rrd->stat_head->pdp_step
817 * rrd->rra_def[i].pdp_cnt)) / rrd->stat_head->pdp_step;
821 for (ii = 0; ii < rrd->stat_head->ds_cnt; ii++) {
822 rrd_write(rrd_file_dn, rrd->cdp_prep, sizeof(cdp_prep_t));
826 /* now, we must make sure that the rest of the rrd
827 struct is properly initialized */
829 if ((rrd->rra_ptr = (rra_ptr_t*)calloc(1, sizeof(rra_ptr_t))) == NULL) {
830 rrd_set_error("allocating rra_ptr");
832 rrd_close(rrd_file_dn);
836 /* changed this initialization to be consistent with
837 * rrd_restore. With the old value (0), the first update
838 * would occur for cur_row = 1 because rrd_update increments
839 * the pointer a priori. */
840 for (i = 0; i < rrd->stat_head->rra_cnt; i++) {
841 rrd->rra_ptr->cur_row = rrd_select_initial_row(rrd_file_dn, i, &rrd->rra_def[i]);
842 rrd_write(rrd_file_dn, rrd->rra_ptr, sizeof(rra_ptr_t));
845 /* write the empty data area */
846 if ((unknown = (rrd_value_t *) malloc(512 * sizeof(rrd_value_t))) == NULL) {
847 rrd_set_error("allocating unknown");
849 rrd_close(rrd_file_dn);
852 for (i = 0; i < 512; ++i)
855 while (unkn_cnt > 0) {
856 if(rrd_write(rrd_file_dn, unknown, sizeof(rrd_value_t) * min(unkn_cnt, 512)) < 0)
858 rrd_set_error("creating rrd: %s", rrd_strerror(errno));
866 if (rrd_close(rrd_file_dn) == -1) {
867 rrd_set_error("creating rrd: %s", rrd_strerror(errno));
870 /* flush all we don't need out of the cache */
872 if((rrd_file_dn = rrd_open(file_name, &rrd_dn, RRD_READONLY)) != NULL)
874 rrd_dontneed(rrd_file_dn, &rrd_dn);
875 /* rrd_free(&rrd_dn); */
876 rrd_close(rrd_file_dn);
882 static void rrd_free2(
885 free(rrd->live_head);
886 free(rrd->stat_head);
892 free(rrd->rrd_value);