/*****************************************************************************
- * RRDtool 1.3rc5 Copyright by Tobi Oetiker, 1997-2008
+ * RRDtool 1.4.3 Copyright by Tobi Oetiker, 1997-2010
*****************************************************************************
* rrd_resize.c Alters size of an RRA
*****************************************************************************
* Initial version by Alex van den Bogaerdt
*****************************************************************************/
+#include <stdlib.h>
+
#include "rrd_tool.h"
int rrd_resize(
unsigned long l, rra;
long modify;
unsigned long target_rra;
- int grow = 0, shrink = 0;
+ int shrink = 0;
char *endptr;
rrd_file_t *rrd_file, *rrd_out_file;
target_rra = strtol(argv[2], &endptr, 0);
if (!strcmp(argv[3], "GROW"))
- grow = 1;
+ shrink = 0;
else if (!strcmp(argv[3], "SHRINK"))
shrink = 1;
else {
modify = -modify;
+ rrd_init(&rrdold);
rrd_file = rrd_open(infilename, &rrdold, RRD_READWRITE | RRD_COPY);
if (rrd_file == NULL) {
rrd_free(&rrdold);
return (-1);
}
- if (LockRRD(rrd_file->fd) != 0) {
+
+ if (rrd_lock(rrd_file) != 0) {
rrd_set_error("could not lock original RRD");
rrd_free(&rrdold);
rrd_close(rrd_file);
return (-1);
}
+
if (target_rra >= rrdold.stat_head->rra_cnt) {
rrd_set_error("no such RRA in this RRD");
rrd_free(&rrdold);
rrd_close(rrd_file);
return (-1);
}
- /* the size of the new file */
- /* yes we are abusing the float cookie for this, aargh */
- if ((rrdnew.stat_head = calloc(1, sizeof(stat_head_t))) == NULL) {
+
+ rrd_init(&rrdnew);
+ /* These need to be initialised before calling rrd_open() with
+ the RRD_CREATE flag */
+
+ if ((rrdnew.stat_head = (stat_head_t*)calloc(1, sizeof(stat_head_t))) == NULL) {
rrd_set_error("allocating stat_head for new RRD");
rrd_free(&rrdold);
rrd_close(rrd_file);
return (-1);
}
- rrdnew.stat_head->float_cookie = rrd_file->file_len +
- (rrdold.stat_head->ds_cnt * sizeof(rrd_value_t) * modify);
+ memcpy(rrdnew.stat_head,rrdold.stat_head,sizeof(stat_head_t));
+
+ if ((rrdnew.rra_def = (rra_def_t *)malloc(sizeof(rra_def_t) * rrdold.stat_head->rra_cnt)) == NULL) {
+ rrd_set_error("allocating rra_def for new RRD");
+ rrd_free(&rrdnew);
+ rrd_free(&rrdold);
+ rrd_close(rrd_file);
+ return (-1);
+ }
+ memcpy(rrdnew.rra_def,rrdold.rra_def,sizeof(rra_def_t) * rrdold.stat_head->rra_cnt);
+
+ /* Set this so that the file will be created with the correct size */
+ rrdnew.rra_def[target_rra].row_cnt += modify;
+
rrd_out_file = rrd_open(outfilename, &rrdnew, RRD_READWRITE | RRD_CREAT);
if (rrd_out_file == NULL) {
rrd_set_error("Can't create '%s': %s", outfilename,
rrd_strerror(errno));
rrd_free(&rrdnew);
+ rrd_free(&rrdold);
+ rrd_close(rrd_file);
return (-1);
}
- if (LockRRD(rrd_out_file->fd) != 0) {
+ if (rrd_lock(rrd_out_file) != 0) {
rrd_set_error("could not lock new RRD");
+ rrd_free(&rrdnew);
rrd_free(&rrdold);
rrd_close(rrd_file);
rrd_close(rrd_out_file);
return (-1);
}
/*XXX: do one write for those parts of header that are unchanged */
- rrdnew.stat_head = rrdold.stat_head;
+ if ((rrdnew.rra_ptr = (rra_ptr_t *)malloc(sizeof(rra_ptr_t) * rrdold.stat_head->rra_cnt)) == NULL) {
+ rrd_set_error("allocating rra_ptr for new RRD");
+ rrd_free(&rrdnew);
+ rrd_free(&rrdold);
+ rrd_close(rrd_file);
+ rrd_close(rrd_out_file);
+ return (-1);
+ }
+
+ /* Put this back the way it was so that the rest of the algorithm
+ below remains unchanged, it will be corrected later */
+ rrdnew.rra_def[target_rra].row_cnt -= modify;
+
rrdnew.ds_def = rrdold.ds_def;
- rrdnew.rra_def = rrdold.rra_def;
rrdnew.live_head = rrdold.live_head;
rrdnew.pdp_prep = rrdold.pdp_prep;
rrdnew.cdp_prep = rrdold.cdp_prep;
- rrdnew.rra_ptr = rrdold.rra_ptr;
+ memcpy(rrdnew.rra_ptr,rrdold.rra_ptr,sizeof(rra_ptr_t) * rrdold.stat_head->rra_cnt);
+
version = atoi(rrdold.stat_head->version);
switch (version) {
+ case 4:
+ break;
case 3:
break;
case 1:
- rrdold.stat_head->version[3] = '3';
+ rrdnew.stat_head->version[3] = '3';
break;
default:
rrd_set_error("Do not know how to handle RRD version %s",
rrdold.stat_head->version);
- rrd_close(rrd_file);
+
+ rrdnew.ds_def = NULL;
+ rrdnew.live_head = NULL;
+ rrdnew.pdp_prep = NULL;
+ rrdnew.cdp_prep = NULL;
+
+ rrd_free(&rrdnew);
rrd_free(&rrdold);
+ rrd_close(rrd_file);
+ rrd_close(rrd_out_file);
return (-1);
break;
}
rrd_write(rrd_out_file, &buffer, sizeof(rrd_value_t) * 1);
l--;
}
-#ifndef HAVE_MMAP
buffer = DNAN;
l = rrdnew.stat_head->ds_cnt * modify;
while (l > 0) {
rrd_write(rrd_out_file, &buffer, sizeof(rrd_value_t) * 1);
l--;
}
-#else
- /* for the mmap case, we did already fill the whole new file with DNAN
- * before we copied the old values, so nothing to do here. */
-#endif
} else {
/* Removing rows. Normally this would be just after the cursor
** however this may also mean that we wrap to the beginning of
/* Move the rest of the CDPs
*/
while (1) {
- if (rrd_read(rrd_file, &buffer, sizeof(rrd_value_t) * 1) <= 0)
+ ssize_t b_read;
+ if ((b_read=rrd_read(rrd_file, &buffer, sizeof(rrd_value_t) * 1)) <= 0)
break;
- rrd_write(rrd_out_file, &buffer, sizeof(rrd_value_t) * 1);
+ if(rrd_out_file->pos+b_read > rrd_out_file->file_len) {
+ fprintf(stderr,"WARNING: ignoring last %zu bytes\nWARNING: if you see this message multiple times for a single file you're in trouble\n", b_read);
+ continue;
+ }
+ rrd_write(rrd_out_file, &buffer, b_read);
}
rrdnew.rra_def[target_rra].row_cnt += modify;
rrd_seek(rrd_out_file,
rrdnew.stat_head->rra_cnt, SEEK_CUR);
rrd_write(rrd_out_file, rrdnew.rra_ptr,
sizeof(rra_ptr_t) * rrdnew.stat_head->rra_cnt);
-
+ rrd_close(rrd_file);
+ rrd_close(rrd_out_file);
rrd_free(&rrdold);
- rrd_close(rrd_file);
- rrd_close(rrd_out_file);
+ rrdnew.ds_def = NULL;
+ rrdnew.live_head = NULL;
+ rrdnew.pdp_prep = NULL;
+ rrdnew.cdp_prep = NULL;
+ rrd_free(&rrdnew);
return (0);
}
projects / rrdtool.git / blobdiff