1 /*****************************************************************************
2 * RRDtool 1.3.2 Copyright by Tobi Oetiker, 1997-2008
3 *****************************************************************************
4 * rrd_create.c creates new rrds
5 *****************************************************************************/
12 #include "rrd_rpncalc.h"
15 #include "rrd_is_thread_safe.h"
17 unsigned long FnvHash(
19 int create_hw_contingent_rras(
21 unsigned short period,
22 unsigned long hashed_name);
28 static void rrd_free2(
29 rrd_t *rrd); /* our onwn copy, immmune to mmap */
35 struct option long_options[] = {
36 {"start", required_argument, 0, 'b'},
37 {"step", required_argument, 0, 's'},
42 time_t last_up = time(NULL) - 10;
43 unsigned long pdp_step = 300;
44 rrd_time_value_t last_up_tv;
45 char *parsetime_error = NULL;
50 opterr = 0; /* initialize getopt */
53 opt = getopt_long(argc, argv, "b:s:", long_options, &option_index);
60 if ((parsetime_error = rrd_parsetime(optarg, &last_up_tv))) {
61 rrd_set_error("start time: %s", parsetime_error);
64 if (last_up_tv.type == RELATIVE_TO_END_TIME ||
65 last_up_tv.type == RELATIVE_TO_START_TIME) {
66 rrd_set_error("specifying time relative to the 'start' "
67 "or 'end' makes no sense here");
71 last_up = mktime(&last_up_tv.tm) +last_up_tv.offset;
73 if (last_up < 3600 * 24 * 365 * 10) {
75 ("the first entry to the RRD should be after 1980");
81 long_tmp = atol(optarg);
83 rrd_set_error("step size should be no less than one second");
91 rrd_set_error("unknown option '%c'", optopt);
93 rrd_set_error("unknown option '%s'", argv[optind - 1]);
98 rrd_set_error("need name of an rrd file to create");
101 rc = rrd_create_r(argv[optind],
103 argc - optind - 1, (const char **) (argv + optind + 1));
110 const char *filename,
111 unsigned long pdp_step,
120 char dummychar1[2], dummychar2[2];
121 unsigned short token_idx, error_flag, period = 0;
122 unsigned long hashed_name;
127 if ((rrd.stat_head = calloc(1, sizeof(stat_head_t))) == NULL) {
128 rrd_set_error("allocating rrd.stat_head");
134 if ((rrd.live_head = calloc(1, sizeof(live_head_t))) == NULL) {
135 rrd_set_error("allocating rrd.live_head");
140 /* set some defaults */
141 strcpy(rrd.stat_head->cookie, RRD_COOKIE);
142 strcpy(rrd.stat_head->version, RRD_VERSION3); /* by default we are still version 3 */
143 rrd.stat_head->float_cookie = FLOAT_COOKIE;
144 rrd.stat_head->ds_cnt = 0; /* this will be adjusted later */
145 rrd.stat_head->rra_cnt = 0; /* ditto */
146 rrd.stat_head->pdp_step = pdp_step; /* 5 minute default */
148 /* a default value */
152 rrd.live_head->last_up = last_up;
154 /* optind points to the first non-option command line arg,
155 * in this case, the file name. */
156 /* Compute the FNV hash value (used by SEASONAL and DEVSEASONAL
158 hashed_name = FnvHash(filename);
159 for (i = 0; i < argc; i++) {
162 if (strncmp(argv[i], "DS:", 3) == 0) {
163 size_t old_size = sizeof(ds_def_t) * (rrd.stat_head->ds_cnt);
165 if ((rrd.ds_def = rrd_realloc(rrd.ds_def,
166 old_size + sizeof(ds_def_t))) ==
168 rrd_set_error("allocating rrd.ds_def");
172 memset(&rrd.ds_def[rrd.stat_head->ds_cnt], 0, sizeof(ds_def_t));
173 /* extract the name and type */
174 switch (sscanf(&argv[i][3],
175 DS_NAM_FMT "%1[:]" DST_FMT "%1[:]%n",
176 rrd.ds_def[rrd.stat_head->ds_cnt].ds_nam,
178 rrd.ds_def[rrd.stat_head->ds_cnt].dst,
179 dummychar2, &offset)) {
182 rrd_set_error("Invalid DS name");
186 rrd_set_error("Invalid DS type");
188 case 4: /* (%n may or may not be counted) */
189 case 5: /* check for duplicate datasource names */
190 for (ii = 0; ii < rrd.stat_head->ds_cnt; ii++)
191 if (strcmp(rrd.ds_def[rrd.stat_head->ds_cnt].ds_nam,
192 rrd.ds_def[ii].ds_nam) == 0)
193 rrd_set_error("Duplicate DS name: %s",
194 rrd.ds_def[ii].ds_nam);
195 /* DS_type may be valid or not. Checked later */
198 rrd_set_error("invalid DS format");
200 if (rrd_test_error()) {
205 /* parse the remainder of the arguments */
206 switch (dst_conv(rrd.ds_def[rrd.stat_head->ds_cnt].dst)) {
211 parseGENERIC_DS(&argv[i][offset + 3], &rrd,
212 rrd.stat_head->ds_cnt);
215 parseCDEF_DS(&argv[i][offset + 3], &rrd,
216 rrd.stat_head->ds_cnt);
219 rrd_set_error("invalid DS type specified");
223 if (rrd_test_error()) {
227 rrd.stat_head->ds_cnt++;
228 } else if (strncmp(argv[i], "RRA:", 4) == 0) {
231 size_t old_size = sizeof(rra_def_t) * (rrd.stat_head->rra_cnt);
234 if ((rrd.rra_def = rrd_realloc(rrd.rra_def,
235 old_size + sizeof(rra_def_t))) ==
237 rrd_set_error("allocating rrd.rra_def");
241 memset(&rrd.rra_def[rrd.stat_head->rra_cnt], 0,
244 argvcopy = strdup(argv[i]);
245 token = strtok_r(&argvcopy[4], ":", &tokptr);
246 token_idx = error_flag = 0;
247 while (token != NULL) {
250 if (sscanf(token, CF_NAM_FMT,
251 rrd.rra_def[rrd.stat_head->rra_cnt].cf_nam) !=
253 rrd_set_error("Failed to parse CF name");
255 (rrd.rra_def[rrd.stat_head->rra_cnt].cf_nam)) {
257 strcpy(rrd.stat_head->version, RRD_VERSION); /* MHWPREDICT causes Version 4 */
259 /* initialize some parameters */
260 rrd.rra_def[rrd.stat_head->rra_cnt].par[RRA_hw_alpha].
262 rrd.rra_def[rrd.stat_head->rra_cnt].par[RRA_hw_beta].
264 rrd.rra_def[rrd.stat_head->rra_cnt].
265 par[RRA_dependent_rra_idx].u_cnt =
266 rrd.stat_head->rra_cnt;
270 /* initialize some parameters */
271 rrd.rra_def[rrd.stat_head->rra_cnt].
272 par[RRA_seasonal_gamma].u_val = 0.1;
273 rrd.rra_def[rrd.stat_head->rra_cnt].
274 par[RRA_seasonal_smoothing_window].u_val = 0.05;
277 rrd.rra_def[rrd.stat_head->rra_cnt].
278 par[RRA_dependent_rra_idx].u_cnt = -1;
281 rrd.rra_def[rrd.stat_head->rra_cnt].
282 par[RRA_delta_pos].u_val = 2.0;
283 rrd.rra_def[rrd.stat_head->rra_cnt].
284 par[RRA_delta_neg].u_val = 2.0;
285 rrd.rra_def[rrd.stat_head->rra_cnt].
286 par[RRA_window_len].u_cnt = 3;
287 rrd.rra_def[rrd.stat_head->rra_cnt].
288 par[RRA_failure_threshold].u_cnt = 2;
289 rrd.rra_def[rrd.stat_head->rra_cnt].
290 par[RRA_dependent_rra_idx].u_cnt = -1;
292 /* invalid consolidation function */
295 ("Unrecognized consolidation function %s",
296 rrd.rra_def[rrd.stat_head->rra_cnt].cf_nam);
300 /* default: 1 pdp per cdp */
301 rrd.rra_def[rrd.stat_head->rra_cnt].pdp_cnt = 1;
305 (rrd.rra_def[rrd.stat_head->rra_cnt].cf_nam)) {
312 row_cnt = atoi(token);
314 rrd_set_error("Invalid row count: %i", row_cnt);
315 rrd.rra_def[rrd.stat_head->rra_cnt].row_cnt = row_cnt;
318 rrd.rra_def[rrd.stat_head->rra_cnt].
319 par[RRA_cdp_xff_val].u_val = atof(token);
320 if (rrd.rra_def[rrd.stat_head->rra_cnt].
321 par[RRA_cdp_xff_val].u_val < 0.0
322 || rrd.rra_def[rrd.stat_head->rra_cnt].
323 par[RRA_cdp_xff_val].u_val >= 1.0)
325 ("Invalid xff: must be between 0 and 1");
331 (rrd.rra_def[rrd.stat_head->rra_cnt].cf_nam)) {
334 rrd.rra_def[rrd.stat_head->rra_cnt].par[RRA_hw_alpha].
336 if (atof(token) <= 0.0 || atof(token) >= 1.0)
338 ("Invalid alpha: must be between 0 and 1");
342 rrd.rra_def[rrd.stat_head->rra_cnt].
343 par[RRA_seasonal_gamma].u_val = atof(token);
344 if (atof(token) <= 0.0 || atof(token) >= 1.0)
346 ("Invalid gamma: must be between 0 and 1");
347 rrd.rra_def[rrd.stat_head->rra_cnt].
348 par[RRA_seasonal_smooth_idx].u_cnt =
350 rrd.rra_def[rrd.stat_head->rra_cnt].row_cnt;
353 /* specifies the # of violations that constitutes the failure threshold */
354 rrd.rra_def[rrd.stat_head->rra_cnt].
355 par[RRA_failure_threshold].u_cnt = atoi(token);
357 || atoi(token) > MAX_FAILURES_WINDOW_LEN)
359 ("Failure threshold is out of range %d, %d",
360 1, MAX_FAILURES_WINDOW_LEN);
363 /* specifies the index (1-based) of CF_DEVSEASONAL array
364 * associated with this CF_DEVPREDICT array. */
365 rrd.rra_def[rrd.stat_head->rra_cnt].
366 par[RRA_dependent_rra_idx].u_cnt =
370 rrd.rra_def[rrd.stat_head->rra_cnt].pdp_cnt =
373 rrd_set_error("Invalid step: must be >= 1");
379 (rrd.rra_def[rrd.stat_head->rra_cnt].cf_nam)) {
382 rrd.rra_def[rrd.stat_head->rra_cnt].par[RRA_hw_beta].
384 if (atof(token) < 0.0 || atof(token) > 1.0)
386 ("Invalid beta: must be between 0 and 1");
390 /* specifies the index (1-based) of CF_HWPREDICT array
391 * associated with this CF_DEVSEASONAL or CF_SEASONAL array.
393 rrd.rra_def[rrd.stat_head->rra_cnt].
394 par[RRA_dependent_rra_idx].u_cnt =
398 /* specifies the window length */
399 rrd.rra_def[rrd.stat_head->rra_cnt].
400 par[RRA_window_len].u_cnt = atoi(token);
402 || atoi(token) > MAX_FAILURES_WINDOW_LEN)
404 ("Window length is out of range %d, %d", 1,
405 MAX_FAILURES_WINDOW_LEN);
406 /* verify that window length exceeds the failure threshold */
407 if (rrd.rra_def[rrd.stat_head->rra_cnt].
408 par[RRA_window_len].u_cnt <
409 rrd.rra_def[rrd.stat_head->rra_cnt].
410 par[RRA_failure_threshold].u_cnt)
412 ("Window length is shorter than the failure threshold");
415 /* shouldn't be any more arguments */
417 ("Unexpected extra argument for consolidation function DEVPREDICT");
420 row_cnt = atoi(token);
422 rrd_set_error("Invalid row count: %i", row_cnt);
423 rrd.rra_def[rrd.stat_head->rra_cnt].row_cnt = row_cnt;
429 (rrd.rra_def[rrd.stat_head->rra_cnt].cf_nam)) {
431 /* specifies the index (1-based) of CF_DEVSEASONAL array
432 * associated with this CF_DEVFAILURES array. */
433 rrd.rra_def[rrd.stat_head->rra_cnt].
434 par[RRA_dependent_rra_idx].u_cnt =
439 /* optional smoothing window */
440 if (sscanf(token, "smoothing-window=%lf",
441 &(rrd.rra_def[rrd.stat_head->rra_cnt].
442 par[RRA_seasonal_smoothing_window].
444 strcpy(rrd.stat_head->version, RRD_VERSION); /* smoothing-window causes Version 4 */
445 if (rrd.rra_def[rrd.stat_head->rra_cnt].
446 par[RRA_seasonal_smoothing_window].u_val < 0.0
447 || rrd.rra_def[rrd.stat_head->rra_cnt].
448 par[RRA_seasonal_smoothing_window].u_val >
451 ("Invalid smoothing-window %f: must be between 0 and 1",
452 rrd.rra_def[rrd.stat_head->rra_cnt].
453 par[RRA_seasonal_smoothing_window].
457 rrd_set_error("Invalid option %s", token);
462 /* length of the associated CF_SEASONAL and CF_DEVSEASONAL arrays. */
463 period = atoi(token);
465 rrd.rra_def[rrd.stat_head->rra_cnt].row_cnt)
467 ("Length of seasonal cycle exceeds length of HW prediction array");
470 /* shouldn't be any more arguments */
472 ("Unexpected extra argument for consolidation function %s",
473 rrd.rra_def[rrd.stat_head->rra_cnt].cf_nam);
478 /* If we are here, this must be a CF_HWPREDICT RRA.
479 * Specifies the index (1-based) of CF_SEASONAL array
480 * associated with this CF_HWPREDICT array. If this argument
481 * is missing, then the CF_SEASONAL, CF_DEVSEASONAL, CF_DEVPREDICT,
483 * arrays are created automatically. */
484 rrd.rra_def[rrd.stat_head->rra_cnt].
485 par[RRA_dependent_rra_idx].u_cnt = atoi(token) - 1;
488 /* should never get here */
489 rrd_set_error("Unknown error");
492 if (rrd_test_error()) {
493 /* all errors are unrecoverable */
498 token = strtok_r(NULL, ":", &tokptr);
504 "Creating RRA CF: %s, dep idx %lu, current idx %lu\n",
505 rrd.rra_def[rrd.stat_head->rra_cnt].cf_nam,
506 rrd.rra_def[rrd.stat_head->rra_cnt].
507 par[RRA_dependent_rra_idx].u_cnt, rrd.stat_head->rra_cnt);
509 /* should we create CF_SEASONAL, CF_DEVSEASONAL, and CF_DEVPREDICT? */
510 if ((cf_conv(rrd.rra_def[rrd.stat_head->rra_cnt].cf_nam) ==
512 || cf_conv(rrd.rra_def[rrd.stat_head->rra_cnt].cf_nam) ==
514 && rrd.rra_def[rrd.stat_head->rra_cnt].
515 par[RRA_dependent_rra_idx].u_cnt == rrd.stat_head->rra_cnt) {
517 fprintf(stderr, "Creating HW contingent RRAs\n");
519 if (create_hw_contingent_rras(&rrd, period, hashed_name) ==
521 rrd_set_error("creating contingent RRA");
526 rrd.stat_head->rra_cnt++;
528 rrd_set_error("can't parse argument '%s'", argv[i]);
535 if (rrd.stat_head->rra_cnt < 1) {
536 rrd_set_error("you must define at least one Round Robin Archive");
541 if (rrd.stat_head->ds_cnt < 1) {
542 rrd_set_error("you must define at least one Data Source");
546 return rrd_create_fn(filename, &rrd);
549 void parseGENERIC_DS(
554 char minstr[DS_NAM_SIZE], maxstr[DS_NAM_SIZE];
560 temp = sscanf(def,"%lu:%18[^:]:%18[^:]",
561 &(rrd -> ds_def[ds_idx].par[DS_mrhb_cnt].u_cnt),
564 old_locale = setlocale(LC_NUMERIC, "C");
565 if (sscanf(def, "%lu:%18[^:]:%18[^:]",
566 &(rrd->ds_def[ds_idx].par[DS_mrhb_cnt].u_cnt),
567 minstr, maxstr) == 3) {
568 if (minstr[0] == 'U' && minstr[1] == 0)
569 rrd->ds_def[ds_idx].par[DS_min_val].u_val = DNAN;
571 rrd->ds_def[ds_idx].par[DS_min_val].u_val = atof(minstr);
573 if (maxstr[0] == 'U' && maxstr[1] == 0)
574 rrd->ds_def[ds_idx].par[DS_max_val].u_val = DNAN;
576 rrd->ds_def[ds_idx].par[DS_max_val].u_val = atof(maxstr);
578 if (!isnan(rrd->ds_def[ds_idx].par[DS_min_val].u_val) &&
579 !isnan(rrd->ds_def[ds_idx].par[DS_max_val].u_val) &&
580 rrd->ds_def[ds_idx].par[DS_min_val].u_val
581 >= rrd->ds_def[ds_idx].par[DS_max_val].u_val) {
582 rrd_set_error("min must be less than max in DS definition");
583 setlocale(LC_NUMERIC, old_locale);
587 rrd_set_error("failed to parse data source %s", def);
589 setlocale(LC_NUMERIC, old_locale);
592 /* Create the CF_DEVPREDICT, CF_DEVSEASONAL, CF_SEASONAL, and CF_FAILURES RRAs
593 * associated with a CF_HWPREDICT RRA. */
594 int create_hw_contingent_rras(
596 unsigned short period,
597 unsigned long hashed_name)
600 rra_def_t *current_rra;
602 /* save index to CF_HWPREDICT */
603 unsigned long hw_index = rrd->stat_head->rra_cnt;
605 /* advance the pointer */
606 (rrd->stat_head->rra_cnt)++;
607 /* allocate the memory for the 4 contingent RRAs */
608 old_size = sizeof(rra_def_t) * (rrd->stat_head->rra_cnt);
609 if ((rrd->rra_def = rrd_realloc(rrd->rra_def,
610 old_size + 4 * sizeof(rra_def_t))) ==
613 rrd_set_error("allocating rrd.rra_def");
617 memset(&(rrd->rra_def[rrd->stat_head->rra_cnt]), 0,
618 4 * sizeof(rra_def_t));
620 /* create the CF_SEASONAL RRA */
621 current_rra = &(rrd->rra_def[rrd->stat_head->rra_cnt]);
622 strcpy(current_rra->cf_nam, "SEASONAL");
623 current_rra->row_cnt = period;
624 current_rra->par[RRA_seasonal_smooth_idx].u_cnt = hashed_name % period;
625 current_rra->pdp_cnt = 1;
626 current_rra->par[RRA_seasonal_gamma].u_val =
627 rrd->rra_def[hw_index].par[RRA_hw_alpha].u_val;
628 current_rra->par[RRA_dependent_rra_idx].u_cnt = hw_index;
629 rrd->rra_def[hw_index].par[RRA_dependent_rra_idx].u_cnt =
630 rrd->stat_head->rra_cnt;
632 /* create the CF_DEVSEASONAL RRA */
633 (rrd->stat_head->rra_cnt)++;
634 current_rra = &(rrd->rra_def[rrd->stat_head->rra_cnt]);
635 strcpy(current_rra->cf_nam, "DEVSEASONAL");
636 current_rra->row_cnt = period;
637 current_rra->par[RRA_seasonal_smooth_idx].u_cnt = hashed_name % period;
638 current_rra->pdp_cnt = 1;
639 current_rra->par[RRA_seasonal_gamma].u_val =
640 rrd->rra_def[hw_index].par[RRA_hw_alpha].u_val;
641 current_rra->par[RRA_dependent_rra_idx].u_cnt = hw_index;
643 /* create the CF_DEVPREDICT RRA */
644 (rrd->stat_head->rra_cnt)++;
645 current_rra = &(rrd->rra_def[rrd->stat_head->rra_cnt]);
646 strcpy(current_rra->cf_nam, "DEVPREDICT");
647 current_rra->row_cnt = (rrd->rra_def[hw_index]).row_cnt;
648 current_rra->pdp_cnt = 1;
649 current_rra->par[RRA_dependent_rra_idx].u_cnt = hw_index + 2; /* DEVSEASONAL */
651 /* create the CF_FAILURES RRA */
652 (rrd->stat_head->rra_cnt)++;
653 current_rra = &(rrd->rra_def[rrd->stat_head->rra_cnt]);
654 strcpy(current_rra->cf_nam, "FAILURES");
655 current_rra->row_cnt = period;
656 current_rra->pdp_cnt = 1;
657 current_rra->par[RRA_delta_pos].u_val = 2.0;
658 current_rra->par[RRA_delta_neg].u_val = 2.0;
659 current_rra->par[RRA_failure_threshold].u_cnt = 7;
660 current_rra->par[RRA_window_len].u_cnt = 9;
661 current_rra->par[RRA_dependent_rra_idx].u_cnt = hw_index + 2; /* DEVSEASONAL */
665 /* create and empty rrd file according to the specs given */
668 const char *file_name,
672 rrd_value_t *unknown;
674 rrd_file_t *rrd_file_dn;
676 unsigned rrd_flags = RRD_READWRITE | RRD_CREAT;
679 for (i = 0; i < rrd->stat_head->rra_cnt; i++)
680 unkn_cnt += rrd->stat_head->ds_cnt * rrd->rra_def[i].row_cnt;
682 if ((rrd_file_dn = rrd_open(file_name, rrd, rrd_flags)) == NULL) {
683 rrd_set_error("creating '%s': %s", file_name, rrd_strerror(errno));
688 rrd_write(rrd_file_dn, rrd->stat_head, sizeof(stat_head_t));
690 rrd_write(rrd_file_dn, rrd->ds_def, sizeof(ds_def_t) * rrd->stat_head->ds_cnt);
692 rrd_write(rrd_file_dn, rrd->rra_def,
693 sizeof(rra_def_t) * rrd->stat_head->rra_cnt);
695 rrd_write(rrd_file_dn, rrd->live_head, sizeof(live_head_t));
697 if ((rrd->pdp_prep = calloc(1, sizeof(pdp_prep_t))) == NULL) {
698 rrd_set_error("allocating pdp_prep");
700 rrd_close(rrd_file_dn);
704 strcpy(rrd->pdp_prep->last_ds, "U");
706 rrd->pdp_prep->scratch[PDP_val].u_val = 0.0;
707 rrd->pdp_prep->scratch[PDP_unkn_sec_cnt].u_cnt =
708 rrd->live_head->last_up % rrd->stat_head->pdp_step;
710 for (i = 0; i < rrd->stat_head->ds_cnt; i++)
711 rrd_write(rrd_file_dn, rrd->pdp_prep, sizeof(pdp_prep_t));
713 if ((rrd->cdp_prep = calloc(1, sizeof(cdp_prep_t))) == NULL) {
714 rrd_set_error("allocating cdp_prep");
716 rrd_close(rrd_file_dn);
721 for (i = 0; i < rrd->stat_head->rra_cnt; i++) {
722 switch (cf_conv(rrd->rra_def[i].cf_nam)) {
725 init_hwpredict_cdp(rrd->cdp_prep);
729 init_seasonal_cdp(rrd->cdp_prep);
732 /* initialize violation history to 0 */
733 for (ii = 0; ii < MAX_CDP_PAR_EN; ii++) {
734 /* We can zero everything out, by setting u_val to the
735 * NULL address. Each array entry in scratch is 8 bytes
736 * (a double), but u_cnt only accessed 4 bytes (long) */
737 rrd->cdp_prep->scratch[ii].u_val = 0.0;
741 /* can not be zero because we don't know anything ... */
742 rrd->cdp_prep->scratch[CDP_val].u_val = DNAN;
743 /* startup missing pdp count */
744 rrd->cdp_prep->scratch[CDP_unkn_pdp_cnt].u_cnt =
745 ((rrd->live_head->last_up -
746 rrd->pdp_prep->scratch[PDP_unkn_sec_cnt].u_cnt)
747 % (rrd->stat_head->pdp_step
748 * rrd->rra_def[i].pdp_cnt)) / rrd->stat_head->pdp_step;
752 for (ii = 0; ii < rrd->stat_head->ds_cnt; ii++) {
753 rrd_write(rrd_file_dn, rrd->cdp_prep, sizeof(cdp_prep_t));
757 /* now, we must make sure that the rest of the rrd
758 struct is properly initialized */
760 if ((rrd->rra_ptr = calloc(1, sizeof(rra_ptr_t))) == NULL) {
761 rrd_set_error("allocating rra_ptr");
763 rrd_close(rrd_file_dn);
767 /* changed this initialization to be consistent with
768 * rrd_restore. With the old value (0), the first update
769 * would occur for cur_row = 1 because rrd_update increments
770 * the pointer a priori. */
771 for (i = 0; i < rrd->stat_head->rra_cnt; i++) {
772 rrd->rra_ptr->cur_row = rrd_select_initial_row(rrd_file_dn, i, &rrd->rra_def[i]);
773 rrd_write(rrd_file_dn, rrd->rra_ptr, sizeof(rra_ptr_t));
776 /* write the empty data area */
777 if ((unknown = (rrd_value_t *) malloc(512 * sizeof(rrd_value_t))) == NULL) {
778 rrd_set_error("allocating unknown");
780 rrd_close(rrd_file_dn);
783 for (i = 0; i < 512; ++i)
786 while (unkn_cnt > 0) {
787 if(rrd_write(rrd_file_dn, unknown, sizeof(rrd_value_t) * min(unkn_cnt, 512)) < 0)
789 rrd_set_error("creating rrd: %s", rrd_strerror(errno));
797 if (rrd_close(rrd_file_dn) == -1) {
798 rrd_set_error("creating rrd: %s", rrd_strerror(errno));
801 /* flush all we don't need out of the cache */
803 if((rrd_file_dn = rrd_open(file_name, &rrd_dn, RRD_READONLY)) != NULL)
805 rrd_dontneed(rrd_file_dn, &rrd_dn);
806 /* rrd_free(&rrd_dn); */
807 rrd_close(rrd_file_dn);
813 static void rrd_free2(
816 free(rrd->live_head);
817 free(rrd->stat_head);
823 free(rrd->rrd_value);