PostgreSQL Source Code  git master
controldata.c
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1 /*
2  * controldata.c
3  *
4  * controldata functions
5  *
6  * Copyright (c) 2010-2019, 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  pg_putenv("LC_COLLATE", NULL);
101  pg_putenv("LC_CTYPE", NULL);
102  pg_putenv("LC_MONETARY", NULL);
103  pg_putenv("LC_NUMERIC", NULL);
104  pg_putenv("LC_TIME", NULL);
105 #ifndef WIN32
106  pg_putenv("LANG", NULL);
107 #else
108  /* On Windows the default locale may not be English, so force it */
109  pg_putenv("LANG", "en");
110 #endif
111  pg_putenv("LANGUAGE", NULL);
112  pg_putenv("LC_ALL", NULL);
113  pg_putenv("LC_MESSAGES", "C");
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) < 1000)
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
494  */
495  pg_putenv("LC_COLLATE", lc_collate);
496  pg_putenv("LC_CTYPE", lc_ctype);
497  pg_putenv("LC_MONETARY", lc_monetary);
498  pg_putenv("LC_NUMERIC", lc_numeric);
499  pg_putenv("LC_TIME", lc_time);
500  pg_putenv("LANG", lang);
501  pg_putenv("LANGUAGE", language);
502  pg_putenv("LC_ALL", lc_all);
503  pg_putenv("LC_MESSAGES", lc_messages);
504 
505  pg_free(lc_collate);
506  pg_free(lc_ctype);
507  pg_free(lc_monetary);
508  pg_free(lc_numeric);
509  pg_free(lc_time);
510  pg_free(lang);
511  pg_free(language);
512  pg_free(lc_all);
513  pg_free(lc_messages);
514 
515  /*
516  * Before 9.3, pg_resetwal reported the xlogid and segno of the first log
517  * file after reset as separate lines. Starting with 9.3, it reports the
518  * WAL file name. If the old cluster is older than 9.3, we construct the
519  * WAL file name from the xlogid and segno.
520  */
521  if (GET_MAJOR_VERSION(cluster->major_version) <= 902)
522  {
523  if (got_tli && got_log_id && got_log_seg)
524  {
525  snprintf(cluster->controldata.nextxlogfile, 25, "%08X%08X%08X",
526  tli, logid, segno);
527  got_nextxlogfile = true;
528  }
529  }
530 
531  /* verify that we got all the mandatory pg_control data */
532  if (!got_xid || !got_oid ||
533  !got_multi ||
534  (!got_oldestmulti &&
536  !got_mxoff || (!live_check && !got_nextxlogfile) ||
537  !got_float8_pass_by_value || !got_align || !got_blocksz ||
538  !got_largesz || !got_walsz || !got_walseg || !got_ident ||
539  !got_index || !got_toast ||
540  (!got_large_object &&
542  !got_date_is_int || !got_data_checksum_version)
543  {
544  if (cluster == &old_cluster)
546  "The source cluster lacks some required control information:\n");
547  else
549  "The target cluster lacks some required control information:\n");
550 
551  if (!got_xid)
552  pg_log(PG_REPORT, " checkpoint next XID\n");
553 
554  if (!got_oid)
555  pg_log(PG_REPORT, " latest checkpoint next OID\n");
556 
557  if (!got_multi)
558  pg_log(PG_REPORT, " latest checkpoint next MultiXactId\n");
559 
560  if (!got_oldestmulti &&
562  pg_log(PG_REPORT, " latest checkpoint oldest MultiXactId\n");
563 
564  if (!got_mxoff)
565  pg_log(PG_REPORT, " latest checkpoint next MultiXactOffset\n");
566 
567  if (!live_check && !got_nextxlogfile)
568  pg_log(PG_REPORT, " first WAL segment after reset\n");
569 
570  if (!got_float8_pass_by_value)
571  pg_log(PG_REPORT, " float8 argument passing method\n");
572 
573  if (!got_align)
574  pg_log(PG_REPORT, " maximum alignment\n");
575 
576  if (!got_blocksz)
577  pg_log(PG_REPORT, " block size\n");
578 
579  if (!got_largesz)
580  pg_log(PG_REPORT, " large relation segment size\n");
581 
582  if (!got_walsz)
583  pg_log(PG_REPORT, " WAL block size\n");
584 
585  if (!got_walseg)
586  pg_log(PG_REPORT, " WAL segment size\n");
587 
588  if (!got_ident)
589  pg_log(PG_REPORT, " maximum identifier length\n");
590 
591  if (!got_index)
592  pg_log(PG_REPORT, " maximum number of indexed columns\n");
593 
594  if (!got_toast)
595  pg_log(PG_REPORT, " maximum TOAST chunk size\n");
596 
597  if (!got_large_object &&
599  pg_log(PG_REPORT, " large-object chunk size\n");
600 
601  if (!got_date_is_int)
602  pg_log(PG_REPORT, " dates/times are integers?\n");
603 
604  /* value added in Postgres 9.3 */
605  if (!got_data_checksum_version)
606  pg_log(PG_REPORT, " data checksum version\n");
607 
608  pg_fatal("Cannot continue without required control information, terminating\n");
609  }
610 }
611 
612 
613 /*
614  * check_control_data()
615  *
616  * check to make sure the control data settings are compatible
617  */
618 void
620  ControlData *newctrl)
621 {
622  if (oldctrl->align == 0 || oldctrl->align != newctrl->align)
623  pg_fatal("old and new pg_controldata alignments are invalid or do not match\n"
624  "Likely one cluster is a 32-bit install, the other 64-bit\n");
625 
626  if (oldctrl->blocksz == 0 || oldctrl->blocksz != newctrl->blocksz)
627  pg_fatal("old and new pg_controldata block sizes are invalid or do not match\n");
628 
629  if (oldctrl->largesz == 0 || oldctrl->largesz != newctrl->largesz)
630  pg_fatal("old and new pg_controldata maximum relation segment sizes are invalid or do not match\n");
631 
632  if (oldctrl->walsz == 0 || oldctrl->walsz != newctrl->walsz)
633  pg_fatal("old and new pg_controldata WAL block sizes are invalid or do not match\n");
634 
635  if (oldctrl->walseg == 0 || oldctrl->walseg != newctrl->walseg)
636  pg_fatal("old and new pg_controldata WAL segment sizes are invalid or do not match\n");
637 
638  if (oldctrl->ident == 0 || oldctrl->ident != newctrl->ident)
639  pg_fatal("old and new pg_controldata maximum identifier lengths are invalid or do not match\n");
640 
641  if (oldctrl->index == 0 || oldctrl->index != newctrl->index)
642  pg_fatal("old and new pg_controldata maximum indexed columns are invalid or do not match\n");
643 
644  if (oldctrl->toast == 0 || oldctrl->toast != newctrl->toast)
645  pg_fatal("old and new pg_controldata maximum TOAST chunk sizes are invalid or do not match\n");
646 
647  /* large_object added in 9.5, so it might not exist in the old cluster */
648  if (oldctrl->large_object != 0 &&
649  oldctrl->large_object != newctrl->large_object)
650  pg_fatal("old and new pg_controldata large-object chunk sizes are invalid or do not match\n");
651 
652  if (oldctrl->date_is_int != newctrl->date_is_int)
653  pg_fatal("old and new pg_controldata date/time storage types do not match\n");
654 
655  /*
656  * float8_pass_by_value does not need to match, but is used in
657  * check_for_isn_and_int8_passing_mismatch().
658  */
659 
660  /*
661  * We might eventually allow upgrades from checksum to no-checksum
662  * clusters.
663  */
664  if (oldctrl->data_checksum_version == 0 &&
665  newctrl->data_checksum_version != 0)
666  pg_fatal("old cluster does not use data checksums but the new one does\n");
667  else if (oldctrl->data_checksum_version != 0 &&
668  newctrl->data_checksum_version == 0)
669  pg_fatal("old cluster uses data checksums but the new one does not\n");
670  else if (oldctrl->data_checksum_version != newctrl->data_checksum_version)
671  pg_fatal("old and new cluster pg_controldata checksum versions do not match\n");
672 }
673 
674 
675 void
677 {
678  char old_path[MAXPGPATH],
679  new_path[MAXPGPATH];
680 
681  /* rename pg_control so old server cannot be accidentally started */
682  prep_status("Adding \".old\" suffix to old global/pg_control");
683 
684  snprintf(old_path, sizeof(old_path), "%s/global/pg_control", old_cluster.pgdata);
685  snprintf(new_path, sizeof(new_path), "%s/global/pg_control.old", old_cluster.pgdata);
686  if (pg_mv_file(old_path, new_path) != 0)
687  pg_fatal("Unable to rename %s to %s.\n", old_path, new_path);
688  check_ok();
689 
690  pg_log(PG_REPORT, "\n"
691  "If you want to start the old cluster, you will need to remove\n"
692  "the \".old\" suffix from %s/global/pg_control.old.\n"
693  "Because \"link\" mode was used, the old cluster cannot be safely\n"
694  "started once the new cluster has been started.\n\n", old_cluster.pgdata);
695 }
bool date_is_int
Definition: pg_upgrade.h:221
static char * lc_monetary
Definition: initdb.c:128
uint32 major_version
Definition: pg_upgrade.h:269
unsigned int str2uint(const char *str)
Definition: util.c:240
static char * lc_collate
Definition: initdb.c:126
ControlData controldata
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static void output(uint64 loop_count)
#define LARGE_OBJECT_SIZE_PG_CONTROL_VER
Definition: pg_upgrade.h:121
uint32 chkpnt_nxtoid
Definition: pg_upgrade.h:208
uint32 walsz
Definition: pg_upgrade.h:215
#define GET_MAJOR_VERSION(v)
Definition: pg_upgrade.h:23
char nextxlogfile[25]
Definition: pg_upgrade.h:205
#define pg_fatal(...)
Definition: pg_rewind.h:41
uint32 index
Definition: pg_upgrade.h:218
void check_control_data(ControlData *oldctrl, ControlData *newctrl)
Definition: controldata.c:619
ClusterInfo new_cluster
Definition: pg_upgrade.c:59
uint32 chkpnt_nxtmxoff
Definition: pg_upgrade.h:210
static char * lc_time
Definition: initdb.c:130
uint32 blocksz
Definition: pg_upgrade.h:213
uint32 chkpnt_nxtxid
Definition: pg_upgrade.h:206
static char * lc_messages
Definition: initdb.c:131
uint32 chkpnt_nxtepoch
Definition: pg_upgrade.h:207
#define MAXPGPATH
static char * lc_ctype
Definition: initdb.c:127
static char * lc_numeric
Definition: initdb.c:129
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:359
void cluster(ClusterStmt *stmt, bool isTopLevel)
Definition: cluster.c:102
uint32 align
Definition: pg_upgrade.h:212
static void check_ok(void)
Definition: initdb.c:2076
uint32 chkpnt_oldstMulti
Definition: pg_upgrade.h:211
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:204
uint32 chkpnt_nxtmulti
Definition: pg_upgrade.h:209
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:205
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:115
uint32 ctrl_ver
Definition: pg_upgrade.h:203
char * pgdata
Definition: pg_upgrade.h:261
void disable_old_cluster(void)
Definition: controldata.c:676
void pg_putenv(const char *var, const char *val)
Definition: util.c:253
#define pg_mv_file
Definition: pg_upgrade.h:67
#define snprintf
Definition: port.h:192
bool float8_pass_by_value
Definition: pg_upgrade.h:222