PostgreSQL Source Code  git master
controldata.c
Go to the documentation of this file.
1 /*
2  * controldata.c
3  *
4  * controldata functions
5  *
6  * Copyright (c) 2010-2024, 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 "common/string.h"
15 #include "pg_upgrade.h"
16 
17 
18 /*
19  * get_control_data()
20  *
21  * gets pg_control information in "ctrl". Assumes that bindir and
22  * datadir are valid absolute paths to postgresql bin and pgdata
23  * directories respectively *and* pg_resetwal is version compatible
24  * with datadir. The main purpose of this function is to get pg_control
25  * data in a version independent manner.
26  *
27  * The approach taken here is to invoke pg_resetwal with -n option
28  * and then pipe its output. With little string parsing we get the
29  * pg_control data. pg_resetwal cannot be run while the server is running
30  * so we use pg_controldata; pg_controldata doesn't provide all the fields
31  * we need to actually perform the upgrade, but it provides enough for
32  * check mode. We do not implement pg_resetwal -n because it is hard to
33  * return valid xid data for a running server.
34  */
35 void
37 {
38  char cmd[MAXPGPATH];
39  char bufin[MAX_STRING];
40  FILE *output;
41  char *p;
42  bool got_tli = false;
43  bool got_log_id = false;
44  bool got_log_seg = false;
45  bool got_xid = false;
46  bool got_oid = false;
47  bool got_multi = false;
48  bool got_oldestmulti = false;
49  bool got_oldestxid = false;
50  bool got_mxoff = false;
51  bool got_nextxlogfile = false;
52  bool got_float8_pass_by_value = false;
53  bool got_align = false;
54  bool got_blocksz = false;
55  bool got_largesz = false;
56  bool got_walsz = false;
57  bool got_walseg = false;
58  bool got_ident = false;
59  bool got_index = false;
60  bool got_toast = false;
61  bool got_large_object = false;
62  bool got_date_is_int = false;
63  bool got_data_checksum_version = false;
64  bool got_cluster_state = false;
65  char *lc_collate = NULL;
66  char *lc_ctype = NULL;
67  char *lc_monetary = NULL;
68  char *lc_numeric = NULL;
69  char *lc_time = NULL;
70  char *lang = NULL;
71  char *language = NULL;
72  char *lc_all = NULL;
73  char *lc_messages = NULL;
74  uint32 tli = 0;
75  uint32 logid = 0;
76  uint32 segno = 0;
77  char *resetwal_bin;
78  int rc;
79 
80  /*
81  * Because we test the pg_resetwal output as strings, it has to be in
82  * English. Copied from pg_regress.c.
83  */
84  if (getenv("LC_COLLATE"))
85  lc_collate = pg_strdup(getenv("LC_COLLATE"));
86  if (getenv("LC_CTYPE"))
87  lc_ctype = pg_strdup(getenv("LC_CTYPE"));
88  if (getenv("LC_MONETARY"))
89  lc_monetary = pg_strdup(getenv("LC_MONETARY"));
90  if (getenv("LC_NUMERIC"))
91  lc_numeric = pg_strdup(getenv("LC_NUMERIC"));
92  if (getenv("LC_TIME"))
93  lc_time = pg_strdup(getenv("LC_TIME"));
94  if (getenv("LANG"))
95  lang = pg_strdup(getenv("LANG"));
96  if (getenv("LANGUAGE"))
97  language = pg_strdup(getenv("LANGUAGE"));
98  if (getenv("LC_ALL"))
99  lc_all = pg_strdup(getenv("LC_ALL"));
100  if (getenv("LC_MESSAGES"))
101  lc_messages = pg_strdup(getenv("LC_MESSAGES"));
102 
103  unsetenv("LC_COLLATE");
104  unsetenv("LC_CTYPE");
105  unsetenv("LC_MONETARY");
106  unsetenv("LC_NUMERIC");
107  unsetenv("LC_TIME");
108 #ifndef WIN32
109  unsetenv("LANG");
110 #else
111  /* On Windows the default locale may not be English, so force it */
112  setenv("LANG", "en", 1);
113 #endif
114  unsetenv("LANGUAGE");
115  unsetenv("LC_ALL");
116  setenv("LC_MESSAGES", "C", 1);
117 
118  /*
119  * Check for clean shutdown
120  */
121  if (!live_check || cluster == &new_cluster)
122  {
123  /* only pg_controldata outputs the cluster state */
124  snprintf(cmd, sizeof(cmd), "\"%s/pg_controldata\" \"%s\"",
125  cluster->bindir, cluster->pgdata);
126  fflush(NULL);
127 
128  if ((output = popen(cmd, "r")) == NULL)
129  pg_fatal("could not get control data using %s: %m", cmd);
130 
131  /* we have the result of cmd in "output". so parse it line by line now */
132  while (fgets(bufin, sizeof(bufin), output))
133  {
134  if ((p = strstr(bufin, "Database cluster state:")) != NULL)
135  {
136  p = strchr(p, ':');
137 
138  if (p == NULL || strlen(p) <= 1)
139  pg_fatal("%d: database cluster state problem", __LINE__);
140 
141  p++; /* remove ':' char */
142 
143  /*
144  * We checked earlier for a postmaster lock file, and if we
145  * found one, we tried to start/stop the server to replay the
146  * WAL. However, pg_ctl -m immediate doesn't leave a lock
147  * file, but does require WAL replay, so we check here that
148  * the server was shut down cleanly, from the controldata
149  * perspective.
150  */
151  /* Remove trailing newline and leading spaces */
152  (void) pg_strip_crlf(p);
153  while (*p == ' ')
154  p++;
155  if (strcmp(p, "shut down in recovery") == 0)
156  {
157  if (cluster == &old_cluster)
158  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.");
159  else
160  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.");
161  }
162  else if (strcmp(p, "shut down") != 0)
163  {
164  if (cluster == &old_cluster)
165  pg_fatal("The source cluster was not shut down cleanly, state reported as: \"%s\"", p);
166  else
167  pg_fatal("The target cluster was not shut down cleanly, state reported as: \"%s\"", p);
168  }
169  got_cluster_state = true;
170  }
171  }
172 
173  rc = pclose(output);
174  if (rc != 0)
175  pg_fatal("could not get control data using %s: %s",
176  cmd, wait_result_to_str(rc));
177 
178  if (!got_cluster_state)
179  {
180  if (cluster == &old_cluster)
181  pg_fatal("The source cluster lacks cluster state information:");
182  else
183  pg_fatal("The target cluster lacks cluster state information:");
184  }
185  }
186 
187  /* pg_resetxlog has been renamed to pg_resetwal in version 10 */
188  if (GET_MAJOR_VERSION(cluster->bin_version) <= 906)
189  resetwal_bin = "pg_resetxlog\" -n";
190  else
191  resetwal_bin = "pg_resetwal\" -n";
192  snprintf(cmd, sizeof(cmd), "\"%s/%s \"%s\"",
193  cluster->bindir,
194  live_check ? "pg_controldata\"" : resetwal_bin,
195  cluster->pgdata);
196  fflush(NULL);
197 
198  if ((output = popen(cmd, "r")) == NULL)
199  pg_fatal("could not get control data using %s: %m", cmd);
200 
201  /* Only in <= 9.2 */
202  if (GET_MAJOR_VERSION(cluster->major_version) <= 902)
203  {
204  cluster->controldata.data_checksum_version = 0;
205  got_data_checksum_version = true;
206  }
207 
208  /* we have the result of cmd in "output". so parse it line by line now */
209  while (fgets(bufin, sizeof(bufin), output))
210  {
211  /* In verbose mode, log each line */
212  pg_strip_crlf(bufin);
213  pg_log(PG_VERBOSE, "%s", bufin);
214 
215  if ((p = strstr(bufin, "pg_control version number:")) != NULL)
216  {
217  p = strchr(p, ':');
218 
219  if (p == NULL || strlen(p) <= 1)
220  pg_fatal("%d: pg_resetwal problem", __LINE__);
221 
222  p++; /* remove ':' char */
223  cluster->controldata.ctrl_ver = str2uint(p);
224  }
225  else if ((p = strstr(bufin, "Catalog version number:")) != NULL)
226  {
227  p = strchr(p, ':');
228 
229  if (p == NULL || strlen(p) <= 1)
230  pg_fatal("%d: controldata retrieval problem", __LINE__);
231 
232  p++; /* remove ':' char */
233  cluster->controldata.cat_ver = str2uint(p);
234  }
235  else if ((p = strstr(bufin, "Latest checkpoint's TimeLineID:")) != NULL)
236  {
237  p = strchr(p, ':');
238 
239  if (p == NULL || strlen(p) <= 1)
240  pg_fatal("%d: controldata retrieval problem", __LINE__);
241 
242  p++; /* remove ':' char */
243  tli = str2uint(p);
244  got_tli = true;
245  }
246  else if ((p = strstr(bufin, "First log file ID after reset:")) != NULL)
247  {
248  p = strchr(p, ':');
249 
250  if (p == NULL || strlen(p) <= 1)
251  pg_fatal("%d: controldata retrieval problem", __LINE__);
252 
253  p++; /* remove ':' char */
254  logid = str2uint(p);
255  got_log_id = true;
256  }
257  else if ((p = strstr(bufin, "First log file segment after reset:")) != NULL)
258  {
259  p = strchr(p, ':');
260 
261  if (p == NULL || strlen(p) <= 1)
262  pg_fatal("%d: controldata retrieval problem", __LINE__);
263 
264  p++; /* remove ':' char */
265  segno = str2uint(p);
266  got_log_seg = true;
267  }
268  else if ((p = strstr(bufin, "Latest checkpoint's NextXID:")) != NULL)
269  {
270  p = strchr(p, ':');
271 
272  if (p == NULL || strlen(p) <= 1)
273  pg_fatal("%d: controldata retrieval problem", __LINE__);
274 
275  p++; /* remove ':' char */
276  cluster->controldata.chkpnt_nxtepoch = str2uint(p);
277 
278  /*
279  * Delimiter changed from '/' to ':' in 9.6. We don't test for
280  * the catalog version of the change because the catalog version
281  * is pulled from pg_controldata too, and it isn't worth adding an
282  * order dependency for this --- we just check the string.
283  */
284  if (strchr(p, '/') != NULL)
285  p = strchr(p, '/');
286  else if (GET_MAJOR_VERSION(cluster->major_version) >= 906)
287  p = strchr(p, ':');
288  else
289  p = NULL;
290 
291  if (p == NULL || strlen(p) <= 1)
292  pg_fatal("%d: controldata retrieval problem", __LINE__);
293 
294  p++; /* remove '/' or ':' char */
295  cluster->controldata.chkpnt_nxtxid = str2uint(p);
296  got_xid = true;
297  }
298  else if ((p = strstr(bufin, "Latest checkpoint's NextOID:")) != NULL)
299  {
300  p = strchr(p, ':');
301 
302  if (p == NULL || strlen(p) <= 1)
303  pg_fatal("%d: controldata retrieval problem", __LINE__);
304 
305  p++; /* remove ':' char */
306  cluster->controldata.chkpnt_nxtoid = str2uint(p);
307  got_oid = true;
308  }
309  else if ((p = strstr(bufin, "Latest checkpoint's NextMultiXactId:")) != NULL)
310  {
311  p = strchr(p, ':');
312 
313  if (p == NULL || strlen(p) <= 1)
314  pg_fatal("%d: controldata retrieval problem", __LINE__);
315 
316  p++; /* remove ':' char */
317  cluster->controldata.chkpnt_nxtmulti = str2uint(p);
318  got_multi = true;
319  }
320  else if ((p = strstr(bufin, "Latest checkpoint's oldestXID:")) != NULL)
321  {
322  p = strchr(p, ':');
323 
324  if (p == NULL || strlen(p) <= 1)
325  pg_fatal("%d: controldata retrieval problem", __LINE__);
326 
327  p++; /* remove ':' char */
328  cluster->controldata.chkpnt_oldstxid = str2uint(p);
329  got_oldestxid = true;
330  }
331  else if ((p = strstr(bufin, "Latest checkpoint's oldestMultiXid:")) != NULL)
332  {
333  p = strchr(p, ':');
334 
335  if (p == NULL || strlen(p) <= 1)
336  pg_fatal("%d: controldata retrieval problem", __LINE__);
337 
338  p++; /* remove ':' char */
339  cluster->controldata.chkpnt_oldstMulti = str2uint(p);
340  got_oldestmulti = true;
341  }
342  else if ((p = strstr(bufin, "Latest checkpoint's NextMultiOffset:")) != NULL)
343  {
344  p = strchr(p, ':');
345 
346  if (p == NULL || strlen(p) <= 1)
347  pg_fatal("%d: controldata retrieval problem", __LINE__);
348 
349  p++; /* remove ':' char */
350  cluster->controldata.chkpnt_nxtmxoff = str2uint(p);
351  got_mxoff = true;
352  }
353  else if ((p = strstr(bufin, "First log segment after reset:")) != NULL)
354  {
355  /* Skip the colon and any whitespace after it */
356  p = strchr(p, ':');
357  if (p == NULL || strlen(p) <= 1)
358  pg_fatal("%d: controldata retrieval problem", __LINE__);
359  p = strpbrk(p, "01234567890ABCDEF");
360  if (p == NULL || strlen(p) <= 1)
361  pg_fatal("%d: controldata retrieval problem", __LINE__);
362 
363  /* Make sure it looks like a valid WAL file name */
364  if (strspn(p, "0123456789ABCDEF") != 24)
365  pg_fatal("%d: controldata retrieval problem", __LINE__);
366 
367  strlcpy(cluster->controldata.nextxlogfile, p, 25);
368  got_nextxlogfile = true;
369  }
370  else if ((p = strstr(bufin, "Float8 argument passing:")) != NULL)
371  {
372  p = strchr(p, ':');
373 
374  if (p == NULL || strlen(p) <= 1)
375  pg_fatal("%d: controldata retrieval problem", __LINE__);
376 
377  p++; /* remove ':' char */
378  /* used later for contrib check */
379  cluster->controldata.float8_pass_by_value = strstr(p, "by value") != NULL;
380  got_float8_pass_by_value = true;
381  }
382  else if ((p = strstr(bufin, "Maximum data alignment:")) != NULL)
383  {
384  p = strchr(p, ':');
385 
386  if (p == NULL || strlen(p) <= 1)
387  pg_fatal("%d: controldata retrieval problem", __LINE__);
388 
389  p++; /* remove ':' char */
390  cluster->controldata.align = str2uint(p);
391  got_align = true;
392  }
393  else if ((p = strstr(bufin, "Database block size:")) != NULL)
394  {
395  p = strchr(p, ':');
396 
397  if (p == NULL || strlen(p) <= 1)
398  pg_fatal("%d: controldata retrieval problem", __LINE__);
399 
400  p++; /* remove ':' char */
401  cluster->controldata.blocksz = str2uint(p);
402  got_blocksz = true;
403  }
404  else if ((p = strstr(bufin, "Blocks per segment of large relation:")) != NULL)
405  {
406  p = strchr(p, ':');
407 
408  if (p == NULL || strlen(p) <= 1)
409  pg_fatal("%d: controldata retrieval problem", __LINE__);
410 
411  p++; /* remove ':' char */
412  cluster->controldata.largesz = str2uint(p);
413  got_largesz = true;
414  }
415  else if ((p = strstr(bufin, "WAL block size:")) != NULL)
416  {
417  p = strchr(p, ':');
418 
419  if (p == NULL || strlen(p) <= 1)
420  pg_fatal("%d: controldata retrieval problem", __LINE__);
421 
422  p++; /* remove ':' char */
423  cluster->controldata.walsz = str2uint(p);
424  got_walsz = true;
425  }
426  else if ((p = strstr(bufin, "Bytes per WAL segment:")) != NULL)
427  {
428  p = strchr(p, ':');
429 
430  if (p == NULL || strlen(p) <= 1)
431  pg_fatal("%d: controldata retrieval problem", __LINE__);
432 
433  p++; /* remove ':' char */
434  cluster->controldata.walseg = str2uint(p);
435  got_walseg = true;
436  }
437  else if ((p = strstr(bufin, "Maximum length of identifiers:")) != NULL)
438  {
439  p = strchr(p, ':');
440 
441  if (p == NULL || strlen(p) <= 1)
442  pg_fatal("%d: controldata retrieval problem", __LINE__);
443 
444  p++; /* remove ':' char */
445  cluster->controldata.ident = str2uint(p);
446  got_ident = true;
447  }
448  else if ((p = strstr(bufin, "Maximum columns in an index:")) != NULL)
449  {
450  p = strchr(p, ':');
451 
452  if (p == NULL || strlen(p) <= 1)
453  pg_fatal("%d: controldata retrieval problem", __LINE__);
454 
455  p++; /* remove ':' char */
456  cluster->controldata.index = str2uint(p);
457  got_index = true;
458  }
459  else if ((p = strstr(bufin, "Maximum size of a TOAST chunk:")) != NULL)
460  {
461  p = strchr(p, ':');
462 
463  if (p == NULL || strlen(p) <= 1)
464  pg_fatal("%d: controldata retrieval problem", __LINE__);
465 
466  p++; /* remove ':' char */
467  cluster->controldata.toast = str2uint(p);
468  got_toast = true;
469  }
470  else if ((p = strstr(bufin, "Size of a large-object chunk:")) != NULL)
471  {
472  p = strchr(p, ':');
473 
474  if (p == NULL || strlen(p) <= 1)
475  pg_fatal("%d: controldata retrieval problem", __LINE__);
476 
477  p++; /* remove ':' char */
478  cluster->controldata.large_object = str2uint(p);
479  got_large_object = true;
480  }
481  else if ((p = strstr(bufin, "Date/time type storage:")) != NULL)
482  {
483  p = strchr(p, ':');
484 
485  if (p == NULL || strlen(p) <= 1)
486  pg_fatal("%d: controldata retrieval problem", __LINE__);
487 
488  p++; /* remove ':' char */
489  cluster->controldata.date_is_int = strstr(p, "64-bit integers") != NULL;
490  got_date_is_int = true;
491  }
492  else if ((p = strstr(bufin, "checksum")) != NULL)
493  {
494  p = strchr(p, ':');
495 
496  if (p == NULL || strlen(p) <= 1)
497  pg_fatal("%d: controldata retrieval problem", __LINE__);
498 
499  p++; /* remove ':' char */
500  cluster->controldata.data_checksum_version = str2uint(p);
501  got_data_checksum_version = true;
502  }
503  }
504 
505  rc = pclose(output);
506  if (rc != 0)
507  pg_fatal("could not get control data using %s: %s",
508  cmd, wait_result_to_str(rc));
509 
510  /*
511  * Restore environment variables. Note all but LANG and LC_MESSAGES were
512  * unset above.
513  */
514  if (lc_collate)
515  setenv("LC_COLLATE", lc_collate, 1);
516  if (lc_ctype)
517  setenv("LC_CTYPE", lc_ctype, 1);
518  if (lc_monetary)
519  setenv("LC_MONETARY", lc_monetary, 1);
520  if (lc_numeric)
521  setenv("LC_NUMERIC", lc_numeric, 1);
522  if (lc_time)
523  setenv("LC_TIME", lc_time, 1);
524  if (lang)
525  setenv("LANG", lang, 1);
526  else
527  unsetenv("LANG");
528  if (language)
529  setenv("LANGUAGE", language, 1);
530  if (lc_all)
531  setenv("LC_ALL", lc_all, 1);
532  if (lc_messages)
533  setenv("LC_MESSAGES", lc_messages, 1);
534  else
535  unsetenv("LC_MESSAGES");
536 
538  pg_free(lc_ctype);
541  pg_free(lc_time);
542  pg_free(lang);
543  pg_free(language);
544  pg_free(lc_all);
546 
547  /*
548  * Before 9.3, pg_resetwal reported the xlogid and segno of the first log
549  * file after reset as separate lines. Starting with 9.3, it reports the
550  * WAL file name. If the old cluster is older than 9.3, we construct the
551  * WAL file name from the xlogid and segno.
552  */
553  if (GET_MAJOR_VERSION(cluster->major_version) <= 902)
554  {
555  if (got_tli && got_log_id && got_log_seg)
556  {
557  snprintf(cluster->controldata.nextxlogfile, 25, "%08X%08X%08X",
558  tli, logid, segno);
559  got_nextxlogfile = true;
560  }
561  }
562 
563  /* verify that we got all the mandatory pg_control data */
564  if (!got_xid || !got_oid ||
565  !got_multi || !got_oldestxid ||
566  (!got_oldestmulti &&
567  cluster->controldata.cat_ver >= MULTIXACT_FORMATCHANGE_CAT_VER) ||
568  !got_mxoff || (!live_check && !got_nextxlogfile) ||
569  !got_float8_pass_by_value || !got_align || !got_blocksz ||
570  !got_largesz || !got_walsz || !got_walseg || !got_ident ||
571  !got_index || !got_toast ||
572  (!got_large_object &&
573  cluster->controldata.ctrl_ver >= LARGE_OBJECT_SIZE_PG_CONTROL_VER) ||
574  !got_date_is_int || !got_data_checksum_version)
575  {
576  if (cluster == &old_cluster)
578  "The source cluster lacks some required control information:");
579  else
581  "The target cluster lacks some required control information:");
582 
583  if (!got_xid)
584  pg_log(PG_REPORT, " checkpoint next XID");
585 
586  if (!got_oid)
587  pg_log(PG_REPORT, " latest checkpoint next OID");
588 
589  if (!got_multi)
590  pg_log(PG_REPORT, " latest checkpoint next MultiXactId");
591 
592  if (!got_oldestmulti &&
593  cluster->controldata.cat_ver >= MULTIXACT_FORMATCHANGE_CAT_VER)
594  pg_log(PG_REPORT, " latest checkpoint oldest MultiXactId");
595 
596  if (!got_oldestxid)
597  pg_log(PG_REPORT, " latest checkpoint oldestXID");
598 
599  if (!got_mxoff)
600  pg_log(PG_REPORT, " latest checkpoint next MultiXactOffset");
601 
602  if (!live_check && !got_nextxlogfile)
603  pg_log(PG_REPORT, " first WAL segment after reset");
604 
605  if (!got_float8_pass_by_value)
606  pg_log(PG_REPORT, " float8 argument passing method");
607 
608  if (!got_align)
609  pg_log(PG_REPORT, " maximum alignment");
610 
611  if (!got_blocksz)
612  pg_log(PG_REPORT, " block size");
613 
614  if (!got_largesz)
615  pg_log(PG_REPORT, " large relation segment size");
616 
617  if (!got_walsz)
618  pg_log(PG_REPORT, " WAL block size");
619 
620  if (!got_walseg)
621  pg_log(PG_REPORT, " WAL segment size");
622 
623  if (!got_ident)
624  pg_log(PG_REPORT, " maximum identifier length");
625 
626  if (!got_index)
627  pg_log(PG_REPORT, " maximum number of indexed columns");
628 
629  if (!got_toast)
630  pg_log(PG_REPORT, " maximum TOAST chunk size");
631 
632  if (!got_large_object &&
633  cluster->controldata.ctrl_ver >= LARGE_OBJECT_SIZE_PG_CONTROL_VER)
634  pg_log(PG_REPORT, " large-object chunk size");
635 
636  if (!got_date_is_int)
637  pg_log(PG_REPORT, " dates/times are integers?");
638 
639  /* value added in Postgres 9.3 */
640  if (!got_data_checksum_version)
641  pg_log(PG_REPORT, " data checksum version");
642 
643  pg_fatal("Cannot continue without required control information, terminating");
644  }
645 }
646 
647 
648 /*
649  * check_control_data()
650  *
651  * check to make sure the control data settings are compatible
652  */
653 void
655  ControlData *newctrl)
656 {
657  if (oldctrl->align == 0 || oldctrl->align != newctrl->align)
658  pg_fatal("old and new pg_controldata alignments are invalid or do not match.\n"
659  "Likely one cluster is a 32-bit install, the other 64-bit");
660 
661  if (oldctrl->blocksz == 0 || oldctrl->blocksz != newctrl->blocksz)
662  pg_fatal("old and new pg_controldata block sizes are invalid or do not match");
663 
664  if (oldctrl->largesz == 0 || oldctrl->largesz != newctrl->largesz)
665  pg_fatal("old and new pg_controldata maximum relation segment sizes are invalid or do not match");
666 
667  if (oldctrl->walsz == 0 || oldctrl->walsz != newctrl->walsz)
668  pg_fatal("old and new pg_controldata WAL block sizes are invalid or do not match");
669 
670  if (oldctrl->walseg == 0 || oldctrl->walseg != newctrl->walseg)
671  pg_fatal("old and new pg_controldata WAL segment sizes are invalid or do not match");
672 
673  if (oldctrl->ident == 0 || oldctrl->ident != newctrl->ident)
674  pg_fatal("old and new pg_controldata maximum identifier lengths are invalid or do not match");
675 
676  if (oldctrl->index == 0 || oldctrl->index != newctrl->index)
677  pg_fatal("old and new pg_controldata maximum indexed columns are invalid or do not match");
678 
679  if (oldctrl->toast == 0 || oldctrl->toast != newctrl->toast)
680  pg_fatal("old and new pg_controldata maximum TOAST chunk sizes are invalid or do not match");
681 
682  /* large_object added in 9.5, so it might not exist in the old cluster */
683  if (oldctrl->large_object != 0 &&
684  oldctrl->large_object != newctrl->large_object)
685  pg_fatal("old and new pg_controldata large-object chunk sizes are invalid or do not match");
686 
687  if (oldctrl->date_is_int != newctrl->date_is_int)
688  pg_fatal("old and new pg_controldata date/time storage types do not match");
689 
690  /*
691  * float8_pass_by_value does not need to match, but is used in
692  * check_for_isn_and_int8_passing_mismatch().
693  */
694 
695  /*
696  * We might eventually allow upgrades from checksum to no-checksum
697  * clusters.
698  */
699  if (oldctrl->data_checksum_version == 0 &&
700  newctrl->data_checksum_version != 0)
701  pg_fatal("old cluster does not use data checksums but the new one does");
702  else if (oldctrl->data_checksum_version != 0 &&
703  newctrl->data_checksum_version == 0)
704  pg_fatal("old cluster uses data checksums but the new one does not");
705  else if (oldctrl->data_checksum_version != newctrl->data_checksum_version)
706  pg_fatal("old and new cluster pg_controldata checksum versions do not match");
707 }
708 
709 
710 void
712 {
713  char old_path[MAXPGPATH],
714  new_path[MAXPGPATH];
715 
716  /* rename pg_control so old server cannot be accidentally started */
717  prep_status("Adding \".old\" suffix to old global/pg_control");
718 
719  snprintf(old_path, sizeof(old_path), "%s/global/pg_control", old_cluster.pgdata);
720  snprintf(new_path, sizeof(new_path), "%s/global/pg_control.old", old_cluster.pgdata);
721  if (pg_mv_file(old_path, new_path) != 0)
722  pg_fatal("could not rename file \"%s\" to \"%s\": %m",
723  old_path, new_path);
724  check_ok();
725 
726  pg_log(PG_REPORT, "\n"
727  "If you want to start the old cluster, you will need to remove\n"
728  "the \".old\" suffix from %s/global/pg_control.old.\n"
729  "Because \"link\" mode was used, the old cluster cannot be safely\n"
730  "started once the new cluster has been started.",
732 }
unsigned int uint32
Definition: c.h:493
void cluster(ParseState *pstate, ClusterStmt *stmt, bool isTopLevel)
Definition: cluster.c:108
void get_control_data(ClusterInfo *cluster, bool live_check)
Definition: controldata.c:36
void disable_old_cluster(void)
Definition: controldata.c:711
void check_control_data(ControlData *oldctrl, ControlData *newctrl)
Definition: controldata.c:654
char * pg_strdup(const char *in)
Definition: fe_memutils.c:85
void pg_free(void *ptr)
Definition: fe_memutils.c:105
FILE * output
static char * lc_collate
Definition: initdb.c:141
static char * lc_time
Definition: initdb.c:145
static char * lc_ctype
Definition: initdb.c:142
static char * lc_messages
Definition: initdb.c:146
static char * lc_numeric
Definition: initdb.c:144
static void check_ok(void)
Definition: initdb.c:2036
static char * lc_monetary
Definition: initdb.c:143
static void const char fflush(stdout)
#define pg_fatal(...)
#define MAXPGPATH
ClusterInfo new_cluster
Definition: pg_upgrade.c:65
ClusterInfo old_cluster
Definition: pg_upgrade.c:64
#define pg_mv_file
Definition: pg_upgrade.h:81
#define LARGE_OBJECT_SIZE_PG_CONTROL_VER
Definition: pg_upgrade.h:122
#define MULTIXACT_FORMATCHANGE_CAT_VER
Definition: pg_upgrade.h:116
void void unsigned int str2uint(const char *str)
Definition: util.c:352
void void pg_log(eLogType type, const char *fmt,...) pg_attribute_printf(2
@ PG_VERBOSE
Definition: pg_upgrade.h:268
@ PG_REPORT
Definition: pg_upgrade.h:271
#define GET_MAJOR_VERSION(v)
Definition: pg_upgrade.h:27
#define MAX_STRING
Definition: pg_upgrade.h:22
void prep_status(const char *fmt,...) pg_attribute_printf(1
#define snprintf
Definition: port.h:238
size_t strlcpy(char *dst, const char *src, size_t siz)
Definition: strlcpy.c:45
int pg_strip_crlf(char *str)
Definition: string.c:155
char * pgdata
Definition: pg_upgrade.h:287
uint32 data_checksum_version
Definition: pg_upgrade.h:249
uint32 toast
Definition: pg_upgrade.h:245
uint32 index
Definition: pg_upgrade.h:244
uint32 walseg
Definition: pg_upgrade.h:242
uint32 blocksz
Definition: pg_upgrade.h:239
uint32 walsz
Definition: pg_upgrade.h:241
uint32 ident
Definition: pg_upgrade.h:243
bool date_is_int
Definition: pg_upgrade.h:247
uint32 large_object
Definition: pg_upgrade.h:246
uint32 align
Definition: pg_upgrade.h:238
uint32 largesz
Definition: pg_upgrade.h:240
char * wait_result_to_str(int exitstatus)
Definition: wait_error.c:33
#define unsetenv(x)
Definition: win32_port.h:538
#define setenv(x, y, z)
Definition: win32_port.h:537