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_oldestxid = false;
48  bool got_mxoff = false;
49  bool got_nextxlogfile = false;
50  bool got_float8_pass_by_value = false;
51  bool got_align = false;
52  bool got_blocksz = false;
53  bool got_largesz = false;
54  bool got_walsz = false;
55  bool got_walseg = false;
56  bool got_ident = false;
57  bool got_index = false;
58  bool got_toast = false;
59  bool got_large_object = false;
60  bool got_date_is_int = false;
61  bool got_data_checksum_version = false;
62  bool got_cluster_state = false;
63  char *lc_collate = NULL;
64  char *lc_ctype = NULL;
65  char *lc_monetary = NULL;
66  char *lc_numeric = NULL;
67  char *lc_time = NULL;
68  char *lang = NULL;
69  char *language = NULL;
70  char *lc_all = NULL;
71  char *lc_messages = NULL;
72  uint32 tli = 0;
73  uint32 logid = 0;
74  uint32 segno = 0;
75  char *resetwal_bin;
76 
77 
78  /*
79  * Because we test the pg_resetwal output as strings, it has to be in
80  * English. Copied from pg_regress.c.
81  */
82  if (getenv("LC_COLLATE"))
83  lc_collate = pg_strdup(getenv("LC_COLLATE"));
84  if (getenv("LC_CTYPE"))
85  lc_ctype = pg_strdup(getenv("LC_CTYPE"));
86  if (getenv("LC_MONETARY"))
87  lc_monetary = pg_strdup(getenv("LC_MONETARY"));
88  if (getenv("LC_NUMERIC"))
89  lc_numeric = pg_strdup(getenv("LC_NUMERIC"));
90  if (getenv("LC_TIME"))
91  lc_time = pg_strdup(getenv("LC_TIME"));
92  if (getenv("LANG"))
93  lang = pg_strdup(getenv("LANG"));
94  if (getenv("LANGUAGE"))
95  language = pg_strdup(getenv("LANGUAGE"));
96  if (getenv("LC_ALL"))
97  lc_all = pg_strdup(getenv("LC_ALL"));
98  if (getenv("LC_MESSAGES"))
99  lc_messages = pg_strdup(getenv("LC_MESSAGES"));
100 
101  unsetenv("LC_COLLATE");
102  unsetenv("LC_CTYPE");
103  unsetenv("LC_MONETARY");
104  unsetenv("LC_NUMERIC");
105  unsetenv("LC_TIME");
106 #ifndef WIN32
107  unsetenv("LANG");
108 #else
109  /* On Windows the default locale may not be English, so force it */
110  setenv("LANG", "en", 1);
111 #endif
112  unsetenv("LANGUAGE");
113  unsetenv("LC_ALL");
114  setenv("LC_MESSAGES", "C", 1);
115 
116  /*
117  * Check for clean shutdown
118  */
119  if (!live_check || cluster == &new_cluster)
120  {
121  /* only pg_controldata outputs the cluster state */
122  snprintf(cmd, sizeof(cmd), "\"%s/pg_controldata\" \"%s\"",
123  cluster->bindir, cluster->pgdata);
124  fflush(stdout);
125  fflush(stderr);
126 
127  if ((output = popen(cmd, "r")) == NULL)
128  pg_fatal("could not get control data using %s: %s\n",
129  cmd, strerror(errno));
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\n", __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 leading spaces */
152  while (*p == ' ')
153  p++;
154  if (strcmp(p, "shut down in recovery\n") == 0)
155  {
156  if (cluster == &old_cluster)
157  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");
158  else
159  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");
160  }
161  else if (strcmp(p, "shut down\n") != 0)
162  {
163  if (cluster == &old_cluster)
164  pg_fatal("The source cluster was not shut down cleanly.\n");
165  else
166  pg_fatal("The target cluster was not shut down cleanly.\n");
167  }
168  got_cluster_state = true;
169  }
170  }
171 
172  pclose(output);
173 
174  if (!got_cluster_state)
175  {
176  if (cluster == &old_cluster)
177  pg_fatal("The source cluster lacks cluster state information:\n");
178  else
179  pg_fatal("The target cluster lacks cluster state information:\n");
180  }
181  }
182 
183  /* pg_resetxlog has been renamed to pg_resetwal in version 10 */
184  if (GET_MAJOR_VERSION(cluster->bin_version) <= 906)
185  resetwal_bin = "pg_resetxlog\" -n";
186  else
187  resetwal_bin = "pg_resetwal\" -n";
188  snprintf(cmd, sizeof(cmd), "\"%s/%s \"%s\"",
189  cluster->bindir,
190  live_check ? "pg_controldata\"" : resetwal_bin,
191  cluster->pgdata);
192  fflush(stdout);
193  fflush(stderr);
194 
195  if ((output = popen(cmd, "r")) == NULL)
196  pg_fatal("could not get control data using %s: %s\n",
197  cmd, strerror(errno));
198 
199  /* Only in <= 9.2 */
200  if (GET_MAJOR_VERSION(cluster->major_version) <= 902)
201  {
202  cluster->controldata.data_checksum_version = 0;
203  got_data_checksum_version = true;
204  }
205 
206  /* we have the result of cmd in "output". so parse it line by line now */
207  while (fgets(bufin, sizeof(bufin), output))
208  {
209  pg_log(PG_VERBOSE, "%s", bufin);
210 
211  if ((p = strstr(bufin, "pg_control version number:")) != NULL)
212  {
213  p = strchr(p, ':');
214 
215  if (p == NULL || strlen(p) <= 1)
216  pg_fatal("%d: pg_resetwal problem\n", __LINE__);
217 
218  p++; /* remove ':' char */
219  cluster->controldata.ctrl_ver = str2uint(p);
220  }
221  else if ((p = strstr(bufin, "Catalog version number:")) != NULL)
222  {
223  p = strchr(p, ':');
224 
225  if (p == NULL || strlen(p) <= 1)
226  pg_fatal("%d: controldata retrieval problem\n", __LINE__);
227 
228  p++; /* remove ':' char */
229  cluster->controldata.cat_ver = str2uint(p);
230  }
231  else if ((p = strstr(bufin, "Latest checkpoint's TimeLineID:")) != NULL)
232  {
233  p = strchr(p, ':');
234 
235  if (p == NULL || strlen(p) <= 1)
236  pg_fatal("%d: controldata retrieval problem\n", __LINE__);
237 
238  p++; /* remove ':' char */
239  tli = str2uint(p);
240  got_tli = true;
241  }
242  else if ((p = strstr(bufin, "First log file ID after reset:")) != NULL)
243  {
244  p = strchr(p, ':');
245 
246  if (p == NULL || strlen(p) <= 1)
247  pg_fatal("%d: controldata retrieval problem\n", __LINE__);
248 
249  p++; /* remove ':' char */
250  logid = str2uint(p);
251  got_log_id = true;
252  }
253  else if ((p = strstr(bufin, "First log file segment after reset:")) != NULL)
254  {
255  p = strchr(p, ':');
256 
257  if (p == NULL || strlen(p) <= 1)
258  pg_fatal("%d: controldata retrieval problem\n", __LINE__);
259 
260  p++; /* remove ':' char */
261  segno = str2uint(p);
262  got_log_seg = true;
263  }
264  else if ((p = strstr(bufin, "Latest checkpoint's NextXID:")) != NULL)
265  {
266  p = strchr(p, ':');
267 
268  if (p == NULL || strlen(p) <= 1)
269  pg_fatal("%d: controldata retrieval problem\n", __LINE__);
270 
271  p++; /* remove ':' char */
272  cluster->controldata.chkpnt_nxtepoch = str2uint(p);
273 
274  /*
275  * Delimiter changed from '/' to ':' in 9.6. We don't test for
276  * the catalog version of the change because the catalog version
277  * is pulled from pg_controldata too, and it isn't worth adding an
278  * order dependency for this --- we just check the string.
279  */
280  if (strchr(p, '/') != NULL)
281  p = strchr(p, '/');
282  else if (GET_MAJOR_VERSION(cluster->major_version) >= 906)
283  p = strchr(p, ':');
284  else
285  p = NULL;
286 
287  if (p == NULL || strlen(p) <= 1)
288  pg_fatal("%d: controldata retrieval problem\n", __LINE__);
289 
290  p++; /* remove '/' or ':' char */
291  cluster->controldata.chkpnt_nxtxid = str2uint(p);
292  got_xid = true;
293  }
294  else if ((p = strstr(bufin, "Latest checkpoint's NextOID:")) != NULL)
295  {
296  p = strchr(p, ':');
297 
298  if (p == NULL || strlen(p) <= 1)
299  pg_fatal("%d: controldata retrieval problem\n", __LINE__);
300 
301  p++; /* remove ':' char */
302  cluster->controldata.chkpnt_nxtoid = str2uint(p);
303  got_oid = true;
304  }
305  else if ((p = strstr(bufin, "Latest checkpoint's NextMultiXactId:")) != NULL)
306  {
307  p = strchr(p, ':');
308 
309  if (p == NULL || strlen(p) <= 1)
310  pg_fatal("%d: controldata retrieval problem\n", __LINE__);
311 
312  p++; /* remove ':' char */
313  cluster->controldata.chkpnt_nxtmulti = str2uint(p);
314  got_multi = true;
315  }
316  else if ((p = strstr(bufin, "Latest checkpoint's oldestXID:")) != NULL)
317  {
318  p = strchr(p, ':');
319 
320  if (p == NULL || strlen(p) <= 1)
321  pg_fatal("%d: controldata retrieval problem\n", __LINE__);
322 
323  p++; /* remove ':' char */
324  cluster->controldata.chkpnt_oldstxid = str2uint(p);
325  got_oldestxid = true;
326  }
327  else if ((p = strstr(bufin, "Latest checkpoint's oldestMultiXid:")) != NULL)
328  {
329  p = strchr(p, ':');
330 
331  if (p == NULL || strlen(p) <= 1)
332  pg_fatal("%d: controldata retrieval problem\n", __LINE__);
333 
334  p++; /* remove ':' char */
335  cluster->controldata.chkpnt_oldstMulti = str2uint(p);
336  got_oldestmulti = true;
337  }
338  else if ((p = strstr(bufin, "Latest checkpoint's NextMultiOffset:")) != NULL)
339  {
340  p = strchr(p, ':');
341 
342  if (p == NULL || strlen(p) <= 1)
343  pg_fatal("%d: controldata retrieval problem\n", __LINE__);
344 
345  p++; /* remove ':' char */
346  cluster->controldata.chkpnt_nxtmxoff = str2uint(p);
347  got_mxoff = true;
348  }
349  else if ((p = strstr(bufin, "First log segment after reset:")) != NULL)
350  {
351  /* Skip the colon and any whitespace after it */
352  p = strchr(p, ':');
353  if (p == NULL || strlen(p) <= 1)
354  pg_fatal("%d: controldata retrieval problem\n", __LINE__);
355  p = strpbrk(p, "01234567890ABCDEF");
356  if (p == NULL || strlen(p) <= 1)
357  pg_fatal("%d: controldata retrieval problem\n", __LINE__);
358 
359  /* Make sure it looks like a valid WAL file name */
360  if (strspn(p, "0123456789ABCDEF") != 24)
361  pg_fatal("%d: controldata retrieval problem\n", __LINE__);
362 
363  strlcpy(cluster->controldata.nextxlogfile, p, 25);
364  got_nextxlogfile = true;
365  }
366  else if ((p = strstr(bufin, "Float8 argument passing:")) != 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  /* used later for contrib check */
375  cluster->controldata.float8_pass_by_value = strstr(p, "by value") != NULL;
376  got_float8_pass_by_value = true;
377  }
378  else if ((p = strstr(bufin, "Maximum data alignment:")) != NULL)
379  {
380  p = strchr(p, ':');
381 
382  if (p == NULL || strlen(p) <= 1)
383  pg_fatal("%d: controldata retrieval problem\n", __LINE__);
384 
385  p++; /* remove ':' char */
386  cluster->controldata.align = str2uint(p);
387  got_align = true;
388  }
389  else if ((p = strstr(bufin, "Database block size:")) != NULL)
390  {
391  p = strchr(p, ':');
392 
393  if (p == NULL || strlen(p) <= 1)
394  pg_fatal("%d: controldata retrieval problem\n", __LINE__);
395 
396  p++; /* remove ':' char */
397  cluster->controldata.blocksz = str2uint(p);
398  got_blocksz = true;
399  }
400  else if ((p = strstr(bufin, "Blocks per segment of large relation:")) != NULL)
401  {
402  p = strchr(p, ':');
403 
404  if (p == NULL || strlen(p) <= 1)
405  pg_fatal("%d: controldata retrieval problem\n", __LINE__);
406 
407  p++; /* remove ':' char */
408  cluster->controldata.largesz = str2uint(p);
409  got_largesz = true;
410  }
411  else if ((p = strstr(bufin, "WAL block size:")) != NULL)
412  {
413  p = strchr(p, ':');
414 
415  if (p == NULL || strlen(p) <= 1)
416  pg_fatal("%d: controldata retrieval problem\n", __LINE__);
417 
418  p++; /* remove ':' char */
419  cluster->controldata.walsz = str2uint(p);
420  got_walsz = true;
421  }
422  else if ((p = strstr(bufin, "Bytes per WAL segment:")) != NULL)
423  {
424  p = strchr(p, ':');
425 
426  if (p == NULL || strlen(p) <= 1)
427  pg_fatal("%d: controldata retrieval problem\n", __LINE__);
428 
429  p++; /* remove ':' char */
430  cluster->controldata.walseg = str2uint(p);
431  got_walseg = true;
432  }
433  else if ((p = strstr(bufin, "Maximum length of identifiers:")) != NULL)
434  {
435  p = strchr(p, ':');
436 
437  if (p == NULL || strlen(p) <= 1)
438  pg_fatal("%d: controldata retrieval problem\n", __LINE__);
439 
440  p++; /* remove ':' char */
441  cluster->controldata.ident = str2uint(p);
442  got_ident = true;
443  }
444  else if ((p = strstr(bufin, "Maximum columns in an index:")) != NULL)
445  {
446  p = strchr(p, ':');
447 
448  if (p == NULL || strlen(p) <= 1)
449  pg_fatal("%d: controldata retrieval problem\n", __LINE__);
450 
451  p++; /* remove ':' char */
452  cluster->controldata.index = str2uint(p);
453  got_index = true;
454  }
455  else if ((p = strstr(bufin, "Maximum size of a TOAST chunk:")) != NULL)
456  {
457  p = strchr(p, ':');
458 
459  if (p == NULL || strlen(p) <= 1)
460  pg_fatal("%d: controldata retrieval problem\n", __LINE__);
461 
462  p++; /* remove ':' char */
463  cluster->controldata.toast = str2uint(p);
464  got_toast = true;
465  }
466  else if ((p = strstr(bufin, "Size of a large-object chunk:")) != NULL)
467  {
468  p = strchr(p, ':');
469 
470  if (p == NULL || strlen(p) <= 1)
471  pg_fatal("%d: controldata retrieval problem\n", __LINE__);
472 
473  p++; /* remove ':' char */
474  cluster->controldata.large_object = str2uint(p);
475  got_large_object = true;
476  }
477  else if ((p = strstr(bufin, "Date/time type storage:")) != NULL)
478  {
479  p = strchr(p, ':');
480 
481  if (p == NULL || strlen(p) <= 1)
482  pg_fatal("%d: controldata retrieval problem\n", __LINE__);
483 
484  p++; /* remove ':' char */
485  cluster->controldata.date_is_int = strstr(p, "64-bit integers") != NULL;
486  got_date_is_int = true;
487  }
488  else if ((p = strstr(bufin, "checksum")) != NULL)
489  {
490  p = strchr(p, ':');
491 
492  if (p == NULL || strlen(p) <= 1)
493  pg_fatal("%d: controldata retrieval problem\n", __LINE__);
494 
495  p++; /* remove ':' char */
496  /* used later for contrib check */
498  got_data_checksum_version = true;
499  }
500  }
501 
502  pclose(output);
503 
504  /*
505  * Restore environment variables. Note all but LANG and LC_MESSAGES were
506  * unset above.
507  */
508  if (lc_collate)
509  setenv("LC_COLLATE", lc_collate, 1);
510  if (lc_ctype)
511  setenv("LC_CTYPE", lc_ctype, 1);
512  if (lc_monetary)
513  setenv("LC_MONETARY", lc_monetary, 1);
514  if (lc_numeric)
515  setenv("LC_NUMERIC", lc_numeric, 1);
516  if (lc_time)
517  setenv("LC_TIME", lc_time, 1);
518  if (lang)
519  setenv("LANG", lang, 1);
520  else
521  unsetenv("LANG");
522  if (language)
523  setenv("LANGUAGE", language, 1);
524  if (lc_all)
525  setenv("LC_ALL", lc_all, 1);
526  if (lc_messages)
527  setenv("LC_MESSAGES", lc_messages, 1);
528  else
529  unsetenv("LC_MESSAGES");
530 
531  pg_free(lc_collate);
532  pg_free(lc_ctype);
533  pg_free(lc_monetary);
534  pg_free(lc_numeric);
535  pg_free(lc_time);
536  pg_free(lang);
537  pg_free(language);
538  pg_free(lc_all);
539  pg_free(lc_messages);
540 
541  /*
542  * Before 9.3, pg_resetwal reported the xlogid and segno of the first log
543  * file after reset as separate lines. Starting with 9.3, it reports the
544  * WAL file name. If the old cluster is older than 9.3, we construct the
545  * WAL file name from the xlogid and segno.
546  */
547  if (GET_MAJOR_VERSION(cluster->major_version) <= 902)
548  {
549  if (got_tli && got_log_id && got_log_seg)
550  {
551  snprintf(cluster->controldata.nextxlogfile, 25, "%08X%08X%08X",
552  tli, logid, segno);
553  got_nextxlogfile = true;
554  }
555  }
556 
557  /* verify that we got all the mandatory pg_control data */
558  if (!got_xid || !got_oid ||
559  !got_multi || !got_oldestxid ||
560  (!got_oldestmulti &&
562  !got_mxoff || (!live_check && !got_nextxlogfile) ||
563  !got_float8_pass_by_value || !got_align || !got_blocksz ||
564  !got_largesz || !got_walsz || !got_walseg || !got_ident ||
565  !got_index || !got_toast ||
566  (!got_large_object &&
568  !got_date_is_int || !got_data_checksum_version)
569  {
570  if (cluster == &old_cluster)
572  "The source cluster lacks some required control information:\n");
573  else
575  "The target cluster lacks some required control information:\n");
576 
577  if (!got_xid)
578  pg_log(PG_REPORT, " checkpoint next XID\n");
579 
580  if (!got_oid)
581  pg_log(PG_REPORT, " latest checkpoint next OID\n");
582 
583  if (!got_multi)
584  pg_log(PG_REPORT, " latest checkpoint next MultiXactId\n");
585 
586  if (!got_oldestmulti &&
588  pg_log(PG_REPORT, " latest checkpoint oldest MultiXactId\n");
589 
590  if (!got_oldestxid)
591  pg_log(PG_REPORT, " latest checkpoint oldestXID\n");
592 
593  if (!got_mxoff)
594  pg_log(PG_REPORT, " latest checkpoint next MultiXactOffset\n");
595 
596  if (!live_check && !got_nextxlogfile)
597  pg_log(PG_REPORT, " first WAL segment after reset\n");
598 
599  if (!got_float8_pass_by_value)
600  pg_log(PG_REPORT, " float8 argument passing method\n");
601 
602  if (!got_align)
603  pg_log(PG_REPORT, " maximum alignment\n");
604 
605  if (!got_blocksz)
606  pg_log(PG_REPORT, " block size\n");
607 
608  if (!got_largesz)
609  pg_log(PG_REPORT, " large relation segment size\n");
610 
611  if (!got_walsz)
612  pg_log(PG_REPORT, " WAL block size\n");
613 
614  if (!got_walseg)
615  pg_log(PG_REPORT, " WAL segment size\n");
616 
617  if (!got_ident)
618  pg_log(PG_REPORT, " maximum identifier length\n");
619 
620  if (!got_index)
621  pg_log(PG_REPORT, " maximum number of indexed columns\n");
622 
623  if (!got_toast)
624  pg_log(PG_REPORT, " maximum TOAST chunk size\n");
625 
626  if (!got_large_object &&
628  pg_log(PG_REPORT, " large-object chunk size\n");
629 
630  if (!got_date_is_int)
631  pg_log(PG_REPORT, " dates/times are integers?\n");
632 
633  /* value added in Postgres 9.3 */
634  if (!got_data_checksum_version)
635  pg_log(PG_REPORT, " data checksum version\n");
636 
637  pg_fatal("Cannot continue without required control information, terminating\n");
638  }
639 }
640 
641 
642 /*
643  * check_control_data()
644  *
645  * check to make sure the control data settings are compatible
646  */
647 void
649  ControlData *newctrl)
650 {
651  if (oldctrl->align == 0 || oldctrl->align != newctrl->align)
652  pg_fatal("old and new pg_controldata alignments are invalid or do not match\n"
653  "Likely one cluster is a 32-bit install, the other 64-bit\n");
654 
655  if (oldctrl->blocksz == 0 || oldctrl->blocksz != newctrl->blocksz)
656  pg_fatal("old and new pg_controldata block sizes are invalid or do not match\n");
657 
658  if (oldctrl->largesz == 0 || oldctrl->largesz != newctrl->largesz)
659  pg_fatal("old and new pg_controldata maximum relation segment sizes are invalid or do not match\n");
660 
661  if (oldctrl->walsz == 0 || oldctrl->walsz != newctrl->walsz)
662  pg_fatal("old and new pg_controldata WAL block sizes are invalid or do not match\n");
663 
664  if (oldctrl->walseg == 0 || oldctrl->walseg != newctrl->walseg)
665  pg_fatal("old and new pg_controldata WAL segment sizes are invalid or do not match\n");
666 
667  if (oldctrl->ident == 0 || oldctrl->ident != newctrl->ident)
668  pg_fatal("old and new pg_controldata maximum identifier lengths are invalid or do not match\n");
669 
670  if (oldctrl->index == 0 || oldctrl->index != newctrl->index)
671  pg_fatal("old and new pg_controldata maximum indexed columns are invalid or do not match\n");
672 
673  if (oldctrl->toast == 0 || oldctrl->toast != newctrl->toast)
674  pg_fatal("old and new pg_controldata maximum TOAST chunk sizes are invalid or do not match\n");
675 
676  /* large_object added in 9.5, so it might not exist in the old cluster */
677  if (oldctrl->large_object != 0 &&
678  oldctrl->large_object != newctrl->large_object)
679  pg_fatal("old and new pg_controldata large-object chunk sizes are invalid or do not match\n");
680 
681  if (oldctrl->date_is_int != newctrl->date_is_int)
682  pg_fatal("old and new pg_controldata date/time storage types do not match\n");
683 
684  /*
685  * float8_pass_by_value does not need to match, but is used in
686  * check_for_isn_and_int8_passing_mismatch().
687  */
688 
689  /*
690  * We might eventually allow upgrades from checksum to no-checksum
691  * clusters.
692  */
693  if (oldctrl->data_checksum_version == 0 &&
694  newctrl->data_checksum_version != 0)
695  pg_fatal("old cluster does not use data checksums but the new one does\n");
696  else if (oldctrl->data_checksum_version != 0 &&
697  newctrl->data_checksum_version == 0)
698  pg_fatal("old cluster uses data checksums but the new one does not\n");
699  else if (oldctrl->data_checksum_version != newctrl->data_checksum_version)
700  pg_fatal("old and new cluster pg_controldata checksum versions do not match\n");
701 }
702 
703 
704 void
706 {
707  char old_path[MAXPGPATH],
708  new_path[MAXPGPATH];
709 
710  /* rename pg_control so old server cannot be accidentally started */
711  prep_status("Adding \".old\" suffix to old global/pg_control");
712 
713  snprintf(old_path, sizeof(old_path), "%s/global/pg_control", old_cluster.pgdata);
714  snprintf(new_path, sizeof(new_path), "%s/global/pg_control.old", old_cluster.pgdata);
715  if (pg_mv_file(old_path, new_path) != 0)
716  pg_fatal("Unable to rename %s to %s.\n", old_path, new_path);
717  check_ok();
718 
719  pg_log(PG_REPORT, "\n"
720  "If you want to start the old cluster, you will need to remove\n"
721  "the \".old\" suffix from %s/global/pg_control.old.\n"
722  "Because \"link\" mode was used, the old cluster cannot be safely\n"
723  "started once the new cluster has been started.\n\n", old_cluster.pgdata);
724 }
bool date_is_int
Definition: pg_upgrade.h:221
static char * lc_monetary
Definition: initdb.c:129
uint32 major_version
Definition: pg_upgrade.h:269
unsigned int str2uint(const char *str)
Definition: util.c:240
void cluster(ParseState *pstate, ClusterStmt *stmt, bool isTopLevel)
Definition: cluster.c:103
static char * lc_collate
Definition: initdb.c:127
ControlData controldata
Definition: pg_upgrade.h:259
static void output(uint64 loop_count)
#define LARGE_OBJECT_SIZE_PG_CONTROL_VER
Definition: pg_upgrade.h:120
uint32 chkpnt_nxtoid
Definition: pg_upgrade.h:207
uint32 walsz
Definition: pg_upgrade.h:215
#define GET_MAJOR_VERSION(v)
Definition: pg_upgrade.h:23
char nextxlogfile[25]
Definition: pg_upgrade.h:204
#define pg_fatal(...)
Definition: pg_rewind.h:37
uint32 index
Definition: pg_upgrade.h:218
void check_control_data(ControlData *oldctrl, ControlData *newctrl)
Definition: controldata.c:648
ClusterInfo new_cluster
Definition: pg_upgrade.c:59
uint32 chkpnt_nxtmxoff
Definition: pg_upgrade.h:209
static char * lc_time
Definition: initdb.c:131
#define setenv(x, y, z)
Definition: win32_port.h:497
uint32 blocksz
Definition: pg_upgrade.h:213
uint32 chkpnt_nxtxid
Definition: pg_upgrade.h:205
static char * lc_messages
Definition: initdb.c:132
uint32 chkpnt_nxtepoch
Definition: pg_upgrade.h:206
#define MAXPGPATH
static char * lc_ctype
Definition: initdb.c:128
static char * lc_numeric
Definition: initdb.c:130
uint32 chkpnt_oldstxid
Definition: pg_upgrade.h:211
bool data_checksum_version
Definition: pg_upgrade.h:223
void prep_status(const char *fmt,...) pg_attribute_printf(1
uint32 ident
Definition: pg_upgrade.h:217
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:212
static void check_ok(void)
Definition: initdb.c:1920
uint32 chkpnt_oldstMulti
Definition: pg_upgrade.h:210
uint32 walseg
Definition: pg_upgrade.h:216
char * bindir
Definition: pg_upgrade.h:264
#define MAX_STRING
Definition: pg_upgrade.h:18
uint32 cat_ver
Definition: pg_upgrade.h:203
uint32 chkpnt_nxtmulti
Definition: pg_upgrade.h:208
uint32 largesz
Definition: pg_upgrade.h:214
uint32 bin_version
Definition: pg_upgrade.h:271
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:219
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:220
void pg_free(void *ptr)
Definition: fe_memutils.c:105
#define MULTIXACT_FORMATCHANGE_CAT_VER
Definition: pg_upgrade.h:114
uint32 ctrl_ver
Definition: pg_upgrade.h:202
char * pgdata
Definition: pg_upgrade.h:261
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Definition: controldata.c:705
#define pg_mv_file
Definition: pg_upgrade.h:67
#define snprintf
Definition: port.h:216
bool float8_pass_by_value
Definition: pg_upgrade.h:222
#define unsetenv(x)
Definition: win32_port.h:498