PostgreSQL Source Code  git master
controldata.c
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1 /*
2  * controldata.c
3  *
4  * controldata functions
5  *
6  * Copyright (c) 2010-2021, PostgreSQL Global Development Group
7  * src/bin/pg_upgrade/controldata.c
8  */
9 
10 #include "postgres_fe.h"
11 
12 #include <ctype.h>
13 
14 #include "pg_upgrade.h"
15 
16 /*
17  * get_control_data()
18  *
19  * gets pg_control information in "ctrl". Assumes that bindir and
20  * datadir are valid absolute paths to postgresql bin and pgdata
21  * directories respectively *and* pg_resetwal is version compatible
22  * with datadir. The main purpose of this function is to get pg_control
23  * data in a version independent manner.
24  *
25  * The approach taken here is to invoke pg_resetwal with -n option
26  * and then pipe its output. With little string parsing we get the
27  * pg_control data. pg_resetwal cannot be run while the server is running
28  * so we use pg_controldata; pg_controldata doesn't provide all the fields
29  * we need to actually perform the upgrade, but it provides enough for
30  * check mode. We do not implement pg_resetwal -n because it is hard to
31  * return valid xid data for a running server.
32  */
33 void
35 {
36  char cmd[MAXPGPATH];
37  char bufin[MAX_STRING];
38  FILE *output;
39  char *p;
40  bool got_tli = false;
41  bool got_log_id = false;
42  bool got_log_seg = false;
43  bool got_xid = false;
44  bool got_oid = false;
45  bool got_multi = false;
46  bool got_oldestmulti = false;
47  bool got_mxoff = false;
48  bool got_nextxlogfile = false;
49  bool got_float8_pass_by_value = false;
50  bool got_align = false;
51  bool got_blocksz = false;
52  bool got_largesz = false;
53  bool got_walsz = false;
54  bool got_walseg = false;
55  bool got_ident = false;
56  bool got_index = false;
57  bool got_toast = false;
58  bool got_large_object = false;
59  bool got_date_is_int = false;
60  bool got_data_checksum_version = false;
61  bool got_cluster_state = false;
62  char *lc_collate = NULL;
63  char *lc_ctype = NULL;
64  char *lc_monetary = NULL;
65  char *lc_numeric = NULL;
66  char *lc_time = NULL;
67  char *lang = NULL;
68  char *language = NULL;
69  char *lc_all = NULL;
70  char *lc_messages = NULL;
71  uint32 tli = 0;
72  uint32 logid = 0;
73  uint32 segno = 0;
74  char *resetwal_bin;
75 
76 
77  /*
78  * Because we test the pg_resetwal output as strings, it has to be in
79  * English. Copied from pg_regress.c.
80  */
81  if (getenv("LC_COLLATE"))
82  lc_collate = pg_strdup(getenv("LC_COLLATE"));
83  if (getenv("LC_CTYPE"))
84  lc_ctype = pg_strdup(getenv("LC_CTYPE"));
85  if (getenv("LC_MONETARY"))
86  lc_monetary = pg_strdup(getenv("LC_MONETARY"));
87  if (getenv("LC_NUMERIC"))
88  lc_numeric = pg_strdup(getenv("LC_NUMERIC"));
89  if (getenv("LC_TIME"))
90  lc_time = pg_strdup(getenv("LC_TIME"));
91  if (getenv("LANG"))
92  lang = pg_strdup(getenv("LANG"));
93  if (getenv("LANGUAGE"))
94  language = pg_strdup(getenv("LANGUAGE"));
95  if (getenv("LC_ALL"))
96  lc_all = pg_strdup(getenv("LC_ALL"));
97  if (getenv("LC_MESSAGES"))
98  lc_messages = pg_strdup(getenv("LC_MESSAGES"));
99 
100  unsetenv("LC_COLLATE");
101  unsetenv("LC_CTYPE");
102  unsetenv("LC_MONETARY");
103  unsetenv("LC_NUMERIC");
104  unsetenv("LC_TIME");
105 #ifndef WIN32
106  unsetenv("LANG");
107 #else
108  /* On Windows the default locale may not be English, so force it */
109  setenv("LANG", "en", 1);
110 #endif
111  unsetenv("LANGUAGE");
112  unsetenv("LC_ALL");
113  setenv("LC_MESSAGES", "C", 1);
114 
115  /*
116  * Check for clean shutdown
117  */
118  if (!live_check || cluster == &new_cluster)
119  {
120  /* only pg_controldata outputs the cluster state */
121  snprintf(cmd, sizeof(cmd), "\"%s/pg_controldata\" \"%s\"",
122  cluster->bindir, cluster->pgdata);
123  fflush(stdout);
124  fflush(stderr);
125 
126  if ((output = popen(cmd, "r")) == NULL)
127  pg_fatal("could not get control data using %s: %s\n",
128  cmd, strerror(errno));
129 
130  /* we have the result of cmd in "output". so parse it line by line now */
131  while (fgets(bufin, sizeof(bufin), output))
132  {
133  if ((p = strstr(bufin, "Database cluster state:")) != NULL)
134  {
135  p = strchr(p, ':');
136 
137  if (p == NULL || strlen(p) <= 1)
138  pg_fatal("%d: database cluster state problem\n", __LINE__);
139 
140  p++; /* remove ':' char */
141 
142  /*
143  * We checked earlier for a postmaster lock file, and if we
144  * found one, we tried to start/stop the server to replay the
145  * WAL. However, pg_ctl -m immediate doesn't leave a lock
146  * file, but does require WAL replay, so we check here that
147  * the server was shut down cleanly, from the controldata
148  * perspective.
149  */
150  /* remove leading spaces */
151  while (*p == ' ')
152  p++;
153  if (strcmp(p, "shut down in recovery\n") == 0)
154  {
155  if (cluster == &old_cluster)
156  pg_fatal("The source cluster was shut down while in recovery mode. To upgrade, use \"rsync\" as documented or shut it down as a primary.\n");
157  else
158  pg_fatal("The target cluster was shut down while in recovery mode. To upgrade, use \"rsync\" as documented or shut it down as a primary.\n");
159  }
160  else if (strcmp(p, "shut down\n") != 0)
161  {
162  if (cluster == &old_cluster)
163  pg_fatal("The source cluster was not shut down cleanly.\n");
164  else
165  pg_fatal("The target cluster was not shut down cleanly.\n");
166  }
167  got_cluster_state = true;
168  }
169  }
170 
171  pclose(output);
172 
173  if (!got_cluster_state)
174  {
175  if (cluster == &old_cluster)
176  pg_fatal("The source cluster lacks cluster state information:\n");
177  else
178  pg_fatal("The target cluster lacks cluster state information:\n");
179  }
180  }
181 
182  /* pg_resetxlog has been renamed to pg_resetwal in version 10 */
183  if (GET_MAJOR_VERSION(cluster->bin_version) <= 906)
184  resetwal_bin = "pg_resetxlog\" -n";
185  else
186  resetwal_bin = "pg_resetwal\" -n";
187  snprintf(cmd, sizeof(cmd), "\"%s/%s \"%s\"",
188  cluster->bindir,
189  live_check ? "pg_controldata\"" : resetwal_bin,
190  cluster->pgdata);
191  fflush(stdout);
192  fflush(stderr);
193 
194  if ((output = popen(cmd, "r")) == NULL)
195  pg_fatal("could not get control data using %s: %s\n",
196  cmd, strerror(errno));
197 
198  /* Only in <= 9.2 */
199  if (GET_MAJOR_VERSION(cluster->major_version) <= 902)
200  {
201  cluster->controldata.data_checksum_version = 0;
202  got_data_checksum_version = true;
203  }
204 
205  /* we have the result of cmd in "output". so parse it line by line now */
206  while (fgets(bufin, sizeof(bufin), output))
207  {
208  pg_log(PG_VERBOSE, "%s", bufin);
209 
210  if ((p = strstr(bufin, "pg_control version number:")) != NULL)
211  {
212  p = strchr(p, ':');
213 
214  if (p == NULL || strlen(p) <= 1)
215  pg_fatal("%d: pg_resetwal problem\n", __LINE__);
216 
217  p++; /* remove ':' char */
218  cluster->controldata.ctrl_ver = str2uint(p);
219  }
220  else if ((p = strstr(bufin, "Catalog version number:")) != NULL)
221  {
222  p = strchr(p, ':');
223 
224  if (p == NULL || strlen(p) <= 1)
225  pg_fatal("%d: controldata retrieval problem\n", __LINE__);
226 
227  p++; /* remove ':' char */
228  cluster->controldata.cat_ver = str2uint(p);
229  }
230  else if ((p = strstr(bufin, "Latest checkpoint's TimeLineID:")) != NULL)
231  {
232  p = strchr(p, ':');
233 
234  if (p == NULL || strlen(p) <= 1)
235  pg_fatal("%d: controldata retrieval problem\n", __LINE__);
236 
237  p++; /* remove ':' char */
238  tli = str2uint(p);
239  got_tli = true;
240  }
241  else if ((p = strstr(bufin, "First log file ID after reset:")) != NULL)
242  {
243  p = strchr(p, ':');
244 
245  if (p == NULL || strlen(p) <= 1)
246  pg_fatal("%d: controldata retrieval problem\n", __LINE__);
247 
248  p++; /* remove ':' char */
249  logid = str2uint(p);
250  got_log_id = true;
251  }
252  else if ((p = strstr(bufin, "First log file segment after reset:")) != NULL)
253  {
254  p = strchr(p, ':');
255 
256  if (p == NULL || strlen(p) <= 1)
257  pg_fatal("%d: controldata retrieval problem\n", __LINE__);
258 
259  p++; /* remove ':' char */
260  segno = str2uint(p);
261  got_log_seg = true;
262  }
263  else if ((p = strstr(bufin, "Latest checkpoint's NextXID:")) != NULL)
264  {
265  p = strchr(p, ':');
266 
267  if (p == NULL || strlen(p) <= 1)
268  pg_fatal("%d: controldata retrieval problem\n", __LINE__);
269 
270  p++; /* remove ':' char */
271  cluster->controldata.chkpnt_nxtepoch = str2uint(p);
272 
273  /*
274  * Delimiter changed from '/' to ':' in 9.6. We don't test for
275  * the catalog version of the change because the catalog version
276  * is pulled from pg_controldata too, and it isn't worth adding an
277  * order dependency for this --- we just check the string.
278  */
279  if (strchr(p, '/') != NULL)
280  p = strchr(p, '/');
281  else if (GET_MAJOR_VERSION(cluster->major_version) >= 906)
282  p = strchr(p, ':');
283  else
284  p = NULL;
285 
286  if (p == NULL || strlen(p) <= 1)
287  pg_fatal("%d: controldata retrieval problem\n", __LINE__);
288 
289  p++; /* remove '/' or ':' char */
290  cluster->controldata.chkpnt_nxtxid = str2uint(p);
291  got_xid = true;
292  }
293  else if ((p = strstr(bufin, "Latest checkpoint's NextOID:")) != NULL)
294  {
295  p = strchr(p, ':');
296 
297  if (p == NULL || strlen(p) <= 1)
298  pg_fatal("%d: controldata retrieval problem\n", __LINE__);
299 
300  p++; /* remove ':' char */
301  cluster->controldata.chkpnt_nxtoid = str2uint(p);
302  got_oid = true;
303  }
304  else if ((p = strstr(bufin, "Latest checkpoint's NextMultiXactId:")) != NULL)
305  {
306  p = strchr(p, ':');
307 
308  if (p == NULL || strlen(p) <= 1)
309  pg_fatal("%d: controldata retrieval problem\n", __LINE__);
310 
311  p++; /* remove ':' char */
312  cluster->controldata.chkpnt_nxtmulti = str2uint(p);
313  got_multi = true;
314  }
315  else if ((p = strstr(bufin, "Latest checkpoint's oldestMultiXid:")) != NULL)
316  {
317  p = strchr(p, ':');
318 
319  if (p == NULL || strlen(p) <= 1)
320  pg_fatal("%d: controldata retrieval problem\n", __LINE__);
321 
322  p++; /* remove ':' char */
323  cluster->controldata.chkpnt_oldstMulti = str2uint(p);
324  got_oldestmulti = true;
325  }
326  else if ((p = strstr(bufin, "Latest checkpoint's NextMultiOffset:")) != NULL)
327  {
328  p = strchr(p, ':');
329 
330  if (p == NULL || strlen(p) <= 1)
331  pg_fatal("%d: controldata retrieval problem\n", __LINE__);
332 
333  p++; /* remove ':' char */
334  cluster->controldata.chkpnt_nxtmxoff = str2uint(p);
335  got_mxoff = true;
336  }
337  else if ((p = strstr(bufin, "First log segment after reset:")) != NULL)
338  {
339  /* Skip the colon and any whitespace after it */
340  p = strchr(p, ':');
341  if (p == NULL || strlen(p) <= 1)
342  pg_fatal("%d: controldata retrieval problem\n", __LINE__);
343  p = strpbrk(p, "01234567890ABCDEF");
344  if (p == NULL || strlen(p) <= 1)
345  pg_fatal("%d: controldata retrieval problem\n", __LINE__);
346 
347  /* Make sure it looks like a valid WAL file name */
348  if (strspn(p, "0123456789ABCDEF") != 24)
349  pg_fatal("%d: controldata retrieval problem\n", __LINE__);
350 
351  strlcpy(cluster->controldata.nextxlogfile, p, 25);
352  got_nextxlogfile = true;
353  }
354  else if ((p = strstr(bufin, "Float8 argument passing:")) != NULL)
355  {
356  p = strchr(p, ':');
357 
358  if (p == NULL || strlen(p) <= 1)
359  pg_fatal("%d: controldata retrieval problem\n", __LINE__);
360 
361  p++; /* remove ':' char */
362  /* used later for contrib check */
363  cluster->controldata.float8_pass_by_value = strstr(p, "by value") != NULL;
364  got_float8_pass_by_value = true;
365  }
366  else if ((p = strstr(bufin, "Maximum data alignment:")) != NULL)
367  {
368  p = strchr(p, ':');
369 
370  if (p == NULL || strlen(p) <= 1)
371  pg_fatal("%d: controldata retrieval problem\n", __LINE__);
372 
373  p++; /* remove ':' char */
374  cluster->controldata.align = str2uint(p);
375  got_align = true;
376  }
377  else if ((p = strstr(bufin, "Database block size:")) != NULL)
378  {
379  p = strchr(p, ':');
380 
381  if (p == NULL || strlen(p) <= 1)
382  pg_fatal("%d: controldata retrieval problem\n", __LINE__);
383 
384  p++; /* remove ':' char */
385  cluster->controldata.blocksz = str2uint(p);
386  got_blocksz = true;
387  }
388  else if ((p = strstr(bufin, "Blocks per segment of large relation:")) != NULL)
389  {
390  p = strchr(p, ':');
391 
392  if (p == NULL || strlen(p) <= 1)
393  pg_fatal("%d: controldata retrieval problem\n", __LINE__);
394 
395  p++; /* remove ':' char */
396  cluster->controldata.largesz = str2uint(p);
397  got_largesz = true;
398  }
399  else if ((p = strstr(bufin, "WAL block size:")) != NULL)
400  {
401  p = strchr(p, ':');
402 
403  if (p == NULL || strlen(p) <= 1)
404  pg_fatal("%d: controldata retrieval problem\n", __LINE__);
405 
406  p++; /* remove ':' char */
407  cluster->controldata.walsz = str2uint(p);
408  got_walsz = true;
409  }
410  else if ((p = strstr(bufin, "Bytes per WAL segment:")) != NULL)
411  {
412  p = strchr(p, ':');
413 
414  if (p == NULL || strlen(p) <= 1)
415  pg_fatal("%d: controldata retrieval problem\n", __LINE__);
416 
417  p++; /* remove ':' char */
418  cluster->controldata.walseg = str2uint(p);
419  got_walseg = true;
420  }
421  else if ((p = strstr(bufin, "Maximum length of identifiers:")) != NULL)
422  {
423  p = strchr(p, ':');
424 
425  if (p == NULL || strlen(p) <= 1)
426  pg_fatal("%d: controldata retrieval problem\n", __LINE__);
427 
428  p++; /* remove ':' char */
429  cluster->controldata.ident = str2uint(p);
430  got_ident = true;
431  }
432  else if ((p = strstr(bufin, "Maximum columns in an index:")) != NULL)
433  {
434  p = strchr(p, ':');
435 
436  if (p == NULL || strlen(p) <= 1)
437  pg_fatal("%d: controldata retrieval problem\n", __LINE__);
438 
439  p++; /* remove ':' char */
440  cluster->controldata.index = str2uint(p);
441  got_index = true;
442  }
443  else if ((p = strstr(bufin, "Maximum size of a TOAST chunk:")) != NULL)
444  {
445  p = strchr(p, ':');
446 
447  if (p == NULL || strlen(p) <= 1)
448  pg_fatal("%d: controldata retrieval problem\n", __LINE__);
449 
450  p++; /* remove ':' char */
451  cluster->controldata.toast = str2uint(p);
452  got_toast = true;
453  }
454  else if ((p = strstr(bufin, "Size of a large-object chunk:")) != NULL)
455  {
456  p = strchr(p, ':');
457 
458  if (p == NULL || strlen(p) <= 1)
459  pg_fatal("%d: controldata retrieval problem\n", __LINE__);
460 
461  p++; /* remove ':' char */
462  cluster->controldata.large_object = str2uint(p);
463  got_large_object = true;
464  }
465  else if ((p = strstr(bufin, "Date/time type storage:")) != NULL)
466  {
467  p = strchr(p, ':');
468 
469  if (p == NULL || strlen(p) <= 1)
470  pg_fatal("%d: controldata retrieval problem\n", __LINE__);
471 
472  p++; /* remove ':' char */
473  cluster->controldata.date_is_int = strstr(p, "64-bit integers") != NULL;
474  got_date_is_int = true;
475  }
476  else if ((p = strstr(bufin, "checksum")) != NULL)
477  {
478  p = strchr(p, ':');
479 
480  if (p == NULL || strlen(p) <= 1)
481  pg_fatal("%d: controldata retrieval problem\n", __LINE__);
482 
483  p++; /* remove ':' char */
484  /* used later for contrib check */
486  got_data_checksum_version = true;
487  }
488  }
489 
490  pclose(output);
491 
492  /*
493  * Restore environment variables. Note all but LANG and LC_MESSAGES were
494  * unset above.
495  */
496  if (lc_collate)
497  setenv("LC_COLLATE", lc_collate, 1);
498  if (lc_ctype)
499  setenv("LC_CTYPE", lc_ctype, 1);
500  if (lc_monetary)
501  setenv("LC_MONETARY", lc_monetary, 1);
502  if (lc_numeric)
503  setenv("LC_NUMERIC", lc_numeric, 1);
504  if (lc_time)
505  setenv("LC_TIME", lc_time, 1);
506  if (lang)
507  setenv("LANG", lang, 1);
508  else
509  unsetenv("LANG");
510  if (language)
511  setenv("LANGUAGE", language, 1);
512  if (lc_all)
513  setenv("LC_ALL", lc_all, 1);
514  if (lc_messages)
515  setenv("LC_MESSAGES", lc_messages, 1);
516  else
517  unsetenv("LC_MESSAGES");
518 
519  pg_free(lc_collate);
520  pg_free(lc_ctype);
521  pg_free(lc_monetary);
522  pg_free(lc_numeric);
523  pg_free(lc_time);
524  pg_free(lang);
525  pg_free(language);
526  pg_free(lc_all);
527  pg_free(lc_messages);
528 
529  /*
530  * Before 9.3, pg_resetwal reported the xlogid and segno of the first log
531  * file after reset as separate lines. Starting with 9.3, it reports the
532  * WAL file name. If the old cluster is older than 9.3, we construct the
533  * WAL file name from the xlogid and segno.
534  */
535  if (GET_MAJOR_VERSION(cluster->major_version) <= 902)
536  {
537  if (got_tli && got_log_id && got_log_seg)
538  {
539  snprintf(cluster->controldata.nextxlogfile, 25, "%08X%08X%08X",
540  tli, logid, segno);
541  got_nextxlogfile = true;
542  }
543  }
544 
545  /* verify that we got all the mandatory pg_control data */
546  if (!got_xid || !got_oid ||
547  !got_multi ||
548  (!got_oldestmulti &&
550  !got_mxoff || (!live_check && !got_nextxlogfile) ||
551  !got_float8_pass_by_value || !got_align || !got_blocksz ||
552  !got_largesz || !got_walsz || !got_walseg || !got_ident ||
553  !got_index || !got_toast ||
554  (!got_large_object &&
556  !got_date_is_int || !got_data_checksum_version)
557  {
558  if (cluster == &old_cluster)
560  "The source cluster lacks some required control information:\n");
561  else
563  "The target cluster lacks some required control information:\n");
564 
565  if (!got_xid)
566  pg_log(PG_REPORT, " checkpoint next XID\n");
567 
568  if (!got_oid)
569  pg_log(PG_REPORT, " latest checkpoint next OID\n");
570 
571  if (!got_multi)
572  pg_log(PG_REPORT, " latest checkpoint next MultiXactId\n");
573 
574  if (!got_oldestmulti &&
576  pg_log(PG_REPORT, " latest checkpoint oldest MultiXactId\n");
577 
578  if (!got_mxoff)
579  pg_log(PG_REPORT, " latest checkpoint next MultiXactOffset\n");
580 
581  if (!live_check && !got_nextxlogfile)
582  pg_log(PG_REPORT, " first WAL segment after reset\n");
583 
584  if (!got_float8_pass_by_value)
585  pg_log(PG_REPORT, " float8 argument passing method\n");
586 
587  if (!got_align)
588  pg_log(PG_REPORT, " maximum alignment\n");
589 
590  if (!got_blocksz)
591  pg_log(PG_REPORT, " block size\n");
592 
593  if (!got_largesz)
594  pg_log(PG_REPORT, " large relation segment size\n");
595 
596  if (!got_walsz)
597  pg_log(PG_REPORT, " WAL block size\n");
598 
599  if (!got_walseg)
600  pg_log(PG_REPORT, " WAL segment size\n");
601 
602  if (!got_ident)
603  pg_log(PG_REPORT, " maximum identifier length\n");
604 
605  if (!got_index)
606  pg_log(PG_REPORT, " maximum number of indexed columns\n");
607 
608  if (!got_toast)
609  pg_log(PG_REPORT, " maximum TOAST chunk size\n");
610 
611  if (!got_large_object &&
613  pg_log(PG_REPORT, " large-object chunk size\n");
614 
615  if (!got_date_is_int)
616  pg_log(PG_REPORT, " dates/times are integers?\n");
617 
618  /* value added in Postgres 9.3 */
619  if (!got_data_checksum_version)
620  pg_log(PG_REPORT, " data checksum version\n");
621 
622  pg_fatal("Cannot continue without required control information, terminating\n");
623  }
624 }
625 
626 
627 /*
628  * check_control_data()
629  *
630  * check to make sure the control data settings are compatible
631  */
632 void
634  ControlData *newctrl)
635 {
636  if (oldctrl->align == 0 || oldctrl->align != newctrl->align)
637  pg_fatal("old and new pg_controldata alignments are invalid or do not match\n"
638  "Likely one cluster is a 32-bit install, the other 64-bit\n");
639 
640  if (oldctrl->blocksz == 0 || oldctrl->blocksz != newctrl->blocksz)
641  pg_fatal("old and new pg_controldata block sizes are invalid or do not match\n");
642 
643  if (oldctrl->largesz == 0 || oldctrl->largesz != newctrl->largesz)
644  pg_fatal("old and new pg_controldata maximum relation segment sizes are invalid or do not match\n");
645 
646  if (oldctrl->walsz == 0 || oldctrl->walsz != newctrl->walsz)
647  pg_fatal("old and new pg_controldata WAL block sizes are invalid or do not match\n");
648 
649  if (oldctrl->walseg == 0 || oldctrl->walseg != newctrl->walseg)
650  pg_fatal("old and new pg_controldata WAL segment sizes are invalid or do not match\n");
651 
652  if (oldctrl->ident == 0 || oldctrl->ident != newctrl->ident)
653  pg_fatal("old and new pg_controldata maximum identifier lengths are invalid or do not match\n");
654 
655  if (oldctrl->index == 0 || oldctrl->index != newctrl->index)
656  pg_fatal("old and new pg_controldata maximum indexed columns are invalid or do not match\n");
657 
658  if (oldctrl->toast == 0 || oldctrl->toast != newctrl->toast)
659  pg_fatal("old and new pg_controldata maximum TOAST chunk sizes are invalid or do not match\n");
660 
661  /* large_object added in 9.5, so it might not exist in the old cluster */
662  if (oldctrl->large_object != 0 &&
663  oldctrl->large_object != newctrl->large_object)
664  pg_fatal("old and new pg_controldata large-object chunk sizes are invalid or do not match\n");
665 
666  if (oldctrl->date_is_int != newctrl->date_is_int)
667  pg_fatal("old and new pg_controldata date/time storage types do not match\n");
668 
669  /*
670  * float8_pass_by_value does not need to match, but is used in
671  * check_for_isn_and_int8_passing_mismatch().
672  */
673 
674  /*
675  * We might eventually allow upgrades from checksum to no-checksum
676  * clusters.
677  */
678  if (oldctrl->data_checksum_version == 0 &&
679  newctrl->data_checksum_version != 0)
680  pg_fatal("old cluster does not use data checksums but the new one does\n");
681  else if (oldctrl->data_checksum_version != 0 &&
682  newctrl->data_checksum_version == 0)
683  pg_fatal("old cluster uses data checksums but the new one does not\n");
684  else if (oldctrl->data_checksum_version != newctrl->data_checksum_version)
685  pg_fatal("old and new cluster pg_controldata checksum versions do not match\n");
686 }
687 
688 
689 void
691 {
692  char old_path[MAXPGPATH],
693  new_path[MAXPGPATH];
694 
695  /* rename pg_control so old server cannot be accidentally started */
696  prep_status("Adding \".old\" suffix to old global/pg_control");
697 
698  snprintf(old_path, sizeof(old_path), "%s/global/pg_control", old_cluster.pgdata);
699  snprintf(new_path, sizeof(new_path), "%s/global/pg_control.old", old_cluster.pgdata);
700  if (pg_mv_file(old_path, new_path) != 0)
701  pg_fatal("Unable to rename %s to %s.\n", old_path, new_path);
702  check_ok();
703 
704  pg_log(PG_REPORT, "\n"
705  "If you want to start the old cluster, you will need to remove\n"
706  "the \".old\" suffix from %s/global/pg_control.old.\n"
707  "Because \"link\" mode was used, the old cluster cannot be safely\n"
708  "started once the new cluster has been started.\n\n", old_cluster.pgdata);
709 }
bool date_is_int
Definition: pg_upgrade.h:219
static char * lc_monetary
Definition: initdb.c:129
uint32 major_version
Definition: pg_upgrade.h:267
unsigned int str2uint(const char *str)
Definition: util.c:240
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Definition: cluster.c:103
static char * lc_collate
Definition: initdb.c:127
ControlData controldata
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static void output(uint64 loop_count)
#define LARGE_OBJECT_SIZE_PG_CONTROL_VER
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uint32 walsz
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#define GET_MAJOR_VERSION(v)
Definition: pg_upgrade.h:23
char nextxlogfile[25]
Definition: pg_upgrade.h:203
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uint32 index
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Definition: controldata.c:633
ClusterInfo new_cluster
Definition: pg_upgrade.c:59
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static char * lc_time
Definition: initdb.c:131
#define setenv(x, y, z)
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uint32 blocksz
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static char * lc_messages
Definition: initdb.c:132
uint32 chkpnt_nxtepoch
Definition: pg_upgrade.h:205
#define MAXPGPATH
static char * lc_ctype
Definition: initdb.c:128
static char * lc_numeric
Definition: initdb.c:130
bool data_checksum_version
Definition: pg_upgrade.h:221
void prep_status(const char *fmt,...) pg_attribute_printf(1
uint32 ident
Definition: pg_upgrade.h:215
ClusterInfo old_cluster
Definition: pg_upgrade.c:59
char * pg_strdup(const char *in)
Definition: fe_memutils.c:85
unsigned int uint32
Definition: c.h:441
uint32 align
Definition: pg_upgrade.h:210
static void check_ok(void)
Definition: initdb.c:1991
uint32 chkpnt_oldstMulti
Definition: pg_upgrade.h:209
uint32 walseg
Definition: pg_upgrade.h:214
char * bindir
Definition: pg_upgrade.h:262
#define MAX_STRING
Definition: pg_upgrade.h:18
uint32 cat_ver
Definition: pg_upgrade.h:202
uint32 chkpnt_nxtmulti
Definition: pg_upgrade.h:207
uint32 largesz
Definition: pg_upgrade.h:212
uint32 bin_version
Definition: pg_upgrade.h:269
void void pg_log(eLogType type, const char *fmt,...) pg_attribute_printf(2
size_t strlcpy(char *dst, const char *src, size_t siz)
Definition: strlcpy.c:45
uint32 toast
Definition: pg_upgrade.h:217
void get_control_data(ClusterInfo *cluster, bool live_check)
Definition: controldata.c:34
#define strerror
Definition: port.h:229
uint32 large_object
Definition: pg_upgrade.h:218
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Definition: fe_memutils.c:105
#define MULTIXACT_FORMATCHANGE_CAT_VER
Definition: pg_upgrade.h:113
uint32 ctrl_ver
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char * pgdata
Definition: pg_upgrade.h:259
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Definition: controldata.c:690
#define pg_mv_file
Definition: pg_upgrade.h:67
#define snprintf
Definition: port.h:216
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Definition: pg_upgrade.h:220
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Definition: win32_port.h:498