Line data Source code
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
36 36 : get_control_data(ClusterInfo *cluster)
37 : {
38 : char cmd[MAXPGPATH];
39 : char bufin[MAX_STRING];
40 : FILE *output;
41 : char *p;
42 36 : bool got_tli = false;
43 36 : bool got_log_id = false;
44 36 : bool got_log_seg = false;
45 36 : bool got_xid = false;
46 36 : bool got_oid = false;
47 36 : bool got_multi = false;
48 36 : bool got_oldestmulti = false;
49 36 : bool got_oldestxid = false;
50 36 : bool got_mxoff = false;
51 36 : bool got_nextxlogfile = false;
52 36 : bool got_float8_pass_by_value = false;
53 36 : bool got_align = false;
54 36 : bool got_blocksz = false;
55 36 : bool got_largesz = false;
56 36 : bool got_walsz = false;
57 36 : bool got_walseg = false;
58 36 : bool got_ident = false;
59 36 : bool got_index = false;
60 36 : bool got_toast = false;
61 36 : bool got_large_object = false;
62 36 : bool got_date_is_int = false;
63 36 : bool got_data_checksum_version = false;
64 36 : bool got_cluster_state = false;
65 36 : char *lc_collate = NULL;
66 36 : char *lc_ctype = NULL;
67 36 : char *lc_monetary = NULL;
68 36 : char *lc_numeric = NULL;
69 36 : char *lc_time = NULL;
70 36 : char *lang = NULL;
71 36 : char *language = NULL;
72 36 : char *lc_all = NULL;
73 36 : char *lc_messages = NULL;
74 36 : uint32 tli = 0;
75 36 : uint32 logid = 0;
76 36 : uint32 segno = 0;
77 : char *resetwal_bin;
78 : int rc;
79 36 : bool live_check = (cluster == &old_cluster && user_opts.live_check);
80 :
81 : /*
82 : * Because we test the pg_resetwal output as strings, it has to be in
83 : * English. Copied from pg_regress.c.
84 : */
85 36 : if (getenv("LC_COLLATE"))
86 0 : lc_collate = pg_strdup(getenv("LC_COLLATE"));
87 36 : if (getenv("LC_CTYPE"))
88 0 : lc_ctype = pg_strdup(getenv("LC_CTYPE"));
89 36 : if (getenv("LC_MONETARY"))
90 0 : lc_monetary = pg_strdup(getenv("LC_MONETARY"));
91 36 : if (getenv("LC_NUMERIC"))
92 0 : lc_numeric = pg_strdup(getenv("LC_NUMERIC"));
93 36 : if (getenv("LC_TIME"))
94 0 : lc_time = pg_strdup(getenv("LC_TIME"));
95 36 : if (getenv("LANG"))
96 36 : lang = pg_strdup(getenv("LANG"));
97 36 : if (getenv("LANGUAGE"))
98 0 : language = pg_strdup(getenv("LANGUAGE"));
99 36 : if (getenv("LC_ALL"))
100 0 : lc_all = pg_strdup(getenv("LC_ALL"));
101 36 : if (getenv("LC_MESSAGES"))
102 36 : lc_messages = pg_strdup(getenv("LC_MESSAGES"));
103 :
104 36 : unsetenv("LC_COLLATE");
105 36 : unsetenv("LC_CTYPE");
106 36 : unsetenv("LC_MONETARY");
107 36 : unsetenv("LC_NUMERIC");
108 36 : unsetenv("LC_TIME");
109 : #ifndef WIN32
110 36 : unsetenv("LANG");
111 : #else
112 : /* On Windows the default locale may not be English, so force it */
113 : setenv("LANG", "en", 1);
114 : #endif
115 36 : unsetenv("LANGUAGE");
116 36 : unsetenv("LC_ALL");
117 36 : setenv("LC_MESSAGES", "C", 1);
118 :
119 : /*
120 : * Check for clean shutdown
121 : */
122 36 : if (!live_check || cluster == &new_cluster)
123 : {
124 : /* only pg_controldata outputs the cluster state */
125 36 : snprintf(cmd, sizeof(cmd), "\"%s/pg_controldata\" \"%s\"",
126 : cluster->bindir, cluster->pgdata);
127 36 : fflush(NULL);
128 :
129 36 : if ((output = popen(cmd, "r")) == NULL)
130 0 : pg_fatal("could not get control data using %s: %m", cmd);
131 :
132 : /* we have the result of cmd in "output". so parse it line by line now */
133 1836 : while (fgets(bufin, sizeof(bufin), output))
134 : {
135 1800 : if ((p = strstr(bufin, "Database cluster state:")) != NULL)
136 : {
137 36 : p = strchr(p, ':');
138 :
139 36 : if (p == NULL || strlen(p) <= 1)
140 0 : pg_fatal("%d: database cluster state problem", __LINE__);
141 :
142 36 : p++; /* remove ':' char */
143 :
144 : /*
145 : * We checked earlier for a postmaster lock file, and if we
146 : * found one, we tried to start/stop the server to replay the
147 : * WAL. However, pg_ctl -m immediate doesn't leave a lock
148 : * file, but does require WAL replay, so we check here that
149 : * the server was shut down cleanly, from the controldata
150 : * perspective.
151 : */
152 : /* Remove trailing newline and leading spaces */
153 36 : (void) pg_strip_crlf(p);
154 576 : while (*p == ' ')
155 540 : p++;
156 36 : if (strcmp(p, "shut down in recovery") == 0)
157 : {
158 0 : if (cluster == &old_cluster)
159 0 : 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.");
160 : else
161 0 : 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.");
162 : }
163 36 : else if (strcmp(p, "shut down") != 0)
164 : {
165 0 : if (cluster == &old_cluster)
166 0 : pg_fatal("The source cluster was not shut down cleanly, state reported as: \"%s\"", p);
167 : else
168 0 : pg_fatal("The target cluster was not shut down cleanly, state reported as: \"%s\"", p);
169 : }
170 36 : got_cluster_state = true;
171 : }
172 : }
173 :
174 36 : rc = pclose(output);
175 36 : if (rc != 0)
176 0 : pg_fatal("could not get control data using %s: %s",
177 : cmd, wait_result_to_str(rc));
178 :
179 36 : if (!got_cluster_state)
180 : {
181 0 : if (cluster == &old_cluster)
182 0 : pg_fatal("The source cluster lacks cluster state information:");
183 : else
184 0 : pg_fatal("The target cluster lacks cluster state information:");
185 : }
186 : }
187 :
188 : /* pg_resetxlog has been renamed to pg_resetwal in version 10 */
189 36 : if (GET_MAJOR_VERSION(cluster->bin_version) <= 906)
190 0 : resetwal_bin = "pg_resetxlog\" -n";
191 : else
192 36 : resetwal_bin = "pg_resetwal\" -n";
193 36 : snprintf(cmd, sizeof(cmd), "\"%s/%s \"%s\"",
194 : cluster->bindir,
195 : live_check ? "pg_controldata\"" : resetwal_bin,
196 : cluster->pgdata);
197 36 : fflush(NULL);
198 :
199 36 : if ((output = popen(cmd, "r")) == NULL)
200 0 : pg_fatal("could not get control data using %s: %m", cmd);
201 :
202 : /* Only in <= 9.2 */
203 36 : if (GET_MAJOR_VERSION(cluster->major_version) <= 902)
204 : {
205 0 : cluster->controldata.data_checksum_version = 0;
206 0 : got_data_checksum_version = true;
207 : }
208 :
209 : /* we have the result of cmd in "output". so parse it line by line now */
210 1296 : while (fgets(bufin, sizeof(bufin), output))
211 : {
212 : /* In verbose mode, log each line */
213 1260 : pg_strip_crlf(bufin);
214 1260 : pg_log(PG_VERBOSE, "%s", bufin);
215 :
216 1260 : if ((p = strstr(bufin, "pg_control version number:")) != NULL)
217 : {
218 36 : p = strchr(p, ':');
219 :
220 36 : if (p == NULL || strlen(p) <= 1)
221 0 : pg_fatal("%d: pg_resetwal problem", __LINE__);
222 :
223 36 : p++; /* remove ':' char */
224 36 : cluster->controldata.ctrl_ver = str2uint(p);
225 : }
226 1224 : else if ((p = strstr(bufin, "Catalog version number:")) != NULL)
227 : {
228 36 : p = strchr(p, ':');
229 :
230 36 : if (p == NULL || strlen(p) <= 1)
231 0 : pg_fatal("%d: controldata retrieval problem", __LINE__);
232 :
233 36 : p++; /* remove ':' char */
234 36 : cluster->controldata.cat_ver = str2uint(p);
235 : }
236 1188 : else if ((p = strstr(bufin, "Latest checkpoint's TimeLineID:")) != NULL)
237 : {
238 36 : p = strchr(p, ':');
239 :
240 36 : if (p == NULL || strlen(p) <= 1)
241 0 : pg_fatal("%d: controldata retrieval problem", __LINE__);
242 :
243 36 : p++; /* remove ':' char */
244 36 : tli = str2uint(p);
245 36 : got_tli = true;
246 : }
247 1152 : else if ((p = strstr(bufin, "First log file ID after reset:")) != NULL)
248 : {
249 0 : p = strchr(p, ':');
250 :
251 0 : if (p == NULL || strlen(p) <= 1)
252 0 : pg_fatal("%d: controldata retrieval problem", __LINE__);
253 :
254 0 : p++; /* remove ':' char */
255 0 : logid = str2uint(p);
256 0 : got_log_id = true;
257 : }
258 1152 : else if ((p = strstr(bufin, "First log file segment after reset:")) != NULL)
259 : {
260 0 : p = strchr(p, ':');
261 :
262 0 : if (p == NULL || strlen(p) <= 1)
263 0 : pg_fatal("%d: controldata retrieval problem", __LINE__);
264 :
265 0 : p++; /* remove ':' char */
266 0 : segno = str2uint(p);
267 0 : got_log_seg = true;
268 : }
269 1152 : else if ((p = strstr(bufin, "Latest checkpoint's NextXID:")) != NULL)
270 : {
271 36 : p = strchr(p, ':');
272 :
273 36 : if (p == NULL || strlen(p) <= 1)
274 0 : pg_fatal("%d: controldata retrieval problem", __LINE__);
275 :
276 36 : p++; /* remove ':' char */
277 36 : cluster->controldata.chkpnt_nxtepoch = str2uint(p);
278 :
279 : /*
280 : * Delimiter changed from '/' to ':' in 9.6. We don't test for
281 : * the catalog version of the change because the catalog version
282 : * is pulled from pg_controldata too, and it isn't worth adding an
283 : * order dependency for this --- we just check the string.
284 : */
285 36 : if (strchr(p, '/') != NULL)
286 0 : p = strchr(p, '/');
287 36 : else if (GET_MAJOR_VERSION(cluster->major_version) >= 906)
288 36 : p = strchr(p, ':');
289 : else
290 0 : p = NULL;
291 :
292 36 : if (p == NULL || strlen(p) <= 1)
293 0 : pg_fatal("%d: controldata retrieval problem", __LINE__);
294 :
295 36 : p++; /* remove '/' or ':' char */
296 36 : cluster->controldata.chkpnt_nxtxid = str2uint(p);
297 36 : got_xid = true;
298 : }
299 1116 : else if ((p = strstr(bufin, "Latest checkpoint's NextOID:")) != NULL)
300 : {
301 36 : p = strchr(p, ':');
302 :
303 36 : if (p == NULL || strlen(p) <= 1)
304 0 : pg_fatal("%d: controldata retrieval problem", __LINE__);
305 :
306 36 : p++; /* remove ':' char */
307 36 : cluster->controldata.chkpnt_nxtoid = str2uint(p);
308 36 : got_oid = true;
309 : }
310 1080 : else if ((p = strstr(bufin, "Latest checkpoint's NextMultiXactId:")) != NULL)
311 : {
312 36 : p = strchr(p, ':');
313 :
314 36 : if (p == NULL || strlen(p) <= 1)
315 0 : pg_fatal("%d: controldata retrieval problem", __LINE__);
316 :
317 36 : p++; /* remove ':' char */
318 36 : cluster->controldata.chkpnt_nxtmulti = str2uint(p);
319 36 : got_multi = true;
320 : }
321 1044 : else if ((p = strstr(bufin, "Latest checkpoint's oldestXID:")) != NULL)
322 : {
323 36 : p = strchr(p, ':');
324 :
325 36 : if (p == NULL || strlen(p) <= 1)
326 0 : pg_fatal("%d: controldata retrieval problem", __LINE__);
327 :
328 36 : p++; /* remove ':' char */
329 36 : cluster->controldata.chkpnt_oldstxid = str2uint(p);
330 36 : got_oldestxid = true;
331 : }
332 1008 : else if ((p = strstr(bufin, "Latest checkpoint's oldestMultiXid:")) != NULL)
333 : {
334 36 : p = strchr(p, ':');
335 :
336 36 : if (p == NULL || strlen(p) <= 1)
337 0 : pg_fatal("%d: controldata retrieval problem", __LINE__);
338 :
339 36 : p++; /* remove ':' char */
340 36 : cluster->controldata.chkpnt_oldstMulti = str2uint(p);
341 36 : got_oldestmulti = true;
342 : }
343 972 : else if ((p = strstr(bufin, "Latest checkpoint's NextMultiOffset:")) != NULL)
344 : {
345 36 : p = strchr(p, ':');
346 :
347 36 : if (p == NULL || strlen(p) <= 1)
348 0 : pg_fatal("%d: controldata retrieval problem", __LINE__);
349 :
350 36 : p++; /* remove ':' char */
351 36 : cluster->controldata.chkpnt_nxtmxoff = str2uint(p);
352 36 : got_mxoff = true;
353 : }
354 936 : else if ((p = strstr(bufin, "First log segment after reset:")) != NULL)
355 : {
356 : /* Skip the colon and any whitespace after it */
357 36 : p = strchr(p, ':');
358 36 : if (p == NULL || strlen(p) <= 1)
359 0 : pg_fatal("%d: controldata retrieval problem", __LINE__);
360 36 : p = strpbrk(p, "01234567890ABCDEF");
361 36 : if (p == NULL || strlen(p) <= 1)
362 0 : pg_fatal("%d: controldata retrieval problem", __LINE__);
363 :
364 : /* Make sure it looks like a valid WAL file name */
365 36 : if (strspn(p, "0123456789ABCDEF") != 24)
366 0 : pg_fatal("%d: controldata retrieval problem", __LINE__);
367 :
368 36 : strlcpy(cluster->controldata.nextxlogfile, p, 25);
369 36 : got_nextxlogfile = true;
370 : }
371 900 : else if ((p = strstr(bufin, "Float8 argument passing:")) != NULL)
372 : {
373 36 : p = strchr(p, ':');
374 :
375 36 : if (p == NULL || strlen(p) <= 1)
376 0 : pg_fatal("%d: controldata retrieval problem", __LINE__);
377 :
378 36 : p++; /* remove ':' char */
379 : /* used later for contrib check */
380 36 : cluster->controldata.float8_pass_by_value = strstr(p, "by value") != NULL;
381 36 : got_float8_pass_by_value = true;
382 : }
383 864 : else if ((p = strstr(bufin, "Maximum data alignment:")) != NULL)
384 : {
385 36 : p = strchr(p, ':');
386 :
387 36 : if (p == NULL || strlen(p) <= 1)
388 0 : pg_fatal("%d: controldata retrieval problem", __LINE__);
389 :
390 36 : p++; /* remove ':' char */
391 36 : cluster->controldata.align = str2uint(p);
392 36 : got_align = true;
393 : }
394 828 : else if ((p = strstr(bufin, "Database block size:")) != NULL)
395 : {
396 36 : p = strchr(p, ':');
397 :
398 36 : if (p == NULL || strlen(p) <= 1)
399 0 : pg_fatal("%d: controldata retrieval problem", __LINE__);
400 :
401 36 : p++; /* remove ':' char */
402 36 : cluster->controldata.blocksz = str2uint(p);
403 36 : got_blocksz = true;
404 : }
405 792 : else if ((p = strstr(bufin, "Blocks per segment of large relation:")) != NULL)
406 : {
407 36 : p = strchr(p, ':');
408 :
409 36 : if (p == NULL || strlen(p) <= 1)
410 0 : pg_fatal("%d: controldata retrieval problem", __LINE__);
411 :
412 36 : p++; /* remove ':' char */
413 36 : cluster->controldata.largesz = str2uint(p);
414 36 : got_largesz = true;
415 : }
416 756 : else if ((p = strstr(bufin, "WAL block size:")) != NULL)
417 : {
418 36 : p = strchr(p, ':');
419 :
420 36 : if (p == NULL || strlen(p) <= 1)
421 0 : pg_fatal("%d: controldata retrieval problem", __LINE__);
422 :
423 36 : p++; /* remove ':' char */
424 36 : cluster->controldata.walsz = str2uint(p);
425 36 : got_walsz = true;
426 : }
427 720 : else if ((p = strstr(bufin, "Bytes per WAL segment:")) != NULL)
428 : {
429 36 : p = strchr(p, ':');
430 :
431 36 : if (p == NULL || strlen(p) <= 1)
432 0 : pg_fatal("%d: controldata retrieval problem", __LINE__);
433 :
434 36 : p++; /* remove ':' char */
435 36 : cluster->controldata.walseg = str2uint(p);
436 36 : got_walseg = true;
437 : }
438 684 : else if ((p = strstr(bufin, "Maximum length of identifiers:")) != NULL)
439 : {
440 36 : p = strchr(p, ':');
441 :
442 36 : if (p == NULL || strlen(p) <= 1)
443 0 : pg_fatal("%d: controldata retrieval problem", __LINE__);
444 :
445 36 : p++; /* remove ':' char */
446 36 : cluster->controldata.ident = str2uint(p);
447 36 : got_ident = true;
448 : }
449 648 : else if ((p = strstr(bufin, "Maximum columns in an index:")) != NULL)
450 : {
451 36 : p = strchr(p, ':');
452 :
453 36 : if (p == NULL || strlen(p) <= 1)
454 0 : pg_fatal("%d: controldata retrieval problem", __LINE__);
455 :
456 36 : p++; /* remove ':' char */
457 36 : cluster->controldata.index = str2uint(p);
458 36 : got_index = true;
459 : }
460 612 : else if ((p = strstr(bufin, "Maximum size of a TOAST chunk:")) != NULL)
461 : {
462 36 : p = strchr(p, ':');
463 :
464 36 : if (p == NULL || strlen(p) <= 1)
465 0 : pg_fatal("%d: controldata retrieval problem", __LINE__);
466 :
467 36 : p++; /* remove ':' char */
468 36 : cluster->controldata.toast = str2uint(p);
469 36 : got_toast = true;
470 : }
471 576 : else if ((p = strstr(bufin, "Size of a large-object chunk:")) != NULL)
472 : {
473 36 : p = strchr(p, ':');
474 :
475 36 : if (p == NULL || strlen(p) <= 1)
476 0 : pg_fatal("%d: controldata retrieval problem", __LINE__);
477 :
478 36 : p++; /* remove ':' char */
479 36 : cluster->controldata.large_object = str2uint(p);
480 36 : got_large_object = true;
481 : }
482 540 : else if ((p = strstr(bufin, "Date/time type storage:")) != NULL)
483 : {
484 36 : p = strchr(p, ':');
485 :
486 36 : if (p == NULL || strlen(p) <= 1)
487 0 : pg_fatal("%d: controldata retrieval problem", __LINE__);
488 :
489 36 : p++; /* remove ':' char */
490 36 : cluster->controldata.date_is_int = strstr(p, "64-bit integers") != NULL;
491 36 : got_date_is_int = true;
492 : }
493 504 : else if ((p = strstr(bufin, "checksum")) != NULL)
494 : {
495 36 : p = strchr(p, ':');
496 :
497 36 : if (p == NULL || strlen(p) <= 1)
498 0 : pg_fatal("%d: controldata retrieval problem", __LINE__);
499 :
500 36 : p++; /* remove ':' char */
501 36 : cluster->controldata.data_checksum_version = str2uint(p);
502 36 : got_data_checksum_version = true;
503 : }
504 : }
505 :
506 36 : rc = pclose(output);
507 36 : if (rc != 0)
508 0 : pg_fatal("could not get control data using %s: %s",
509 : cmd, wait_result_to_str(rc));
510 :
511 : /*
512 : * Restore environment variables. Note all but LANG and LC_MESSAGES were
513 : * unset above.
514 : */
515 36 : if (lc_collate)
516 0 : setenv("LC_COLLATE", lc_collate, 1);
517 36 : if (lc_ctype)
518 0 : setenv("LC_CTYPE", lc_ctype, 1);
519 36 : if (lc_monetary)
520 0 : setenv("LC_MONETARY", lc_monetary, 1);
521 36 : if (lc_numeric)
522 0 : setenv("LC_NUMERIC", lc_numeric, 1);
523 36 : if (lc_time)
524 0 : setenv("LC_TIME", lc_time, 1);
525 36 : if (lang)
526 36 : setenv("LANG", lang, 1);
527 : else
528 0 : unsetenv("LANG");
529 36 : if (language)
530 0 : setenv("LANGUAGE", language, 1);
531 36 : if (lc_all)
532 0 : setenv("LC_ALL", lc_all, 1);
533 36 : if (lc_messages)
534 36 : setenv("LC_MESSAGES", lc_messages, 1);
535 : else
536 0 : unsetenv("LC_MESSAGES");
537 :
538 36 : pg_free(lc_collate);
539 36 : pg_free(lc_ctype);
540 36 : pg_free(lc_monetary);
541 36 : pg_free(lc_numeric);
542 36 : pg_free(lc_time);
543 36 : pg_free(lang);
544 36 : pg_free(language);
545 36 : pg_free(lc_all);
546 36 : pg_free(lc_messages);
547 :
548 : /*
549 : * Before 9.3, pg_resetwal reported the xlogid and segno of the first log
550 : * file after reset as separate lines. Starting with 9.3, it reports the
551 : * WAL file name. If the old cluster is older than 9.3, we construct the
552 : * WAL file name from the xlogid and segno.
553 : */
554 36 : if (GET_MAJOR_VERSION(cluster->major_version) <= 902)
555 : {
556 0 : if (got_tli && got_log_id && got_log_seg)
557 : {
558 0 : snprintf(cluster->controldata.nextxlogfile, 25, "%08X%08X%08X",
559 : tli, logid, segno);
560 0 : got_nextxlogfile = true;
561 : }
562 : }
563 :
564 : /* verify that we got all the mandatory pg_control data */
565 36 : if (!got_xid || !got_oid ||
566 36 : !got_multi || !got_oldestxid ||
567 36 : (!got_oldestmulti &&
568 0 : cluster->controldata.cat_ver >= MULTIXACT_FORMATCHANGE_CAT_VER) ||
569 36 : !got_mxoff || (!live_check && !got_nextxlogfile) ||
570 36 : !got_float8_pass_by_value || !got_align || !got_blocksz ||
571 36 : !got_largesz || !got_walsz || !got_walseg || !got_ident ||
572 36 : !got_index || !got_toast ||
573 36 : (!got_large_object &&
574 0 : cluster->controldata.ctrl_ver >= LARGE_OBJECT_SIZE_PG_CONTROL_VER) ||
575 36 : !got_date_is_int || !got_data_checksum_version)
576 : {
577 0 : if (cluster == &old_cluster)
578 0 : pg_log(PG_REPORT,
579 : "The source cluster lacks some required control information:");
580 : else
581 0 : pg_log(PG_REPORT,
582 : "The target cluster lacks some required control information:");
583 :
584 0 : if (!got_xid)
585 0 : pg_log(PG_REPORT, " checkpoint next XID");
586 :
587 0 : if (!got_oid)
588 0 : pg_log(PG_REPORT, " latest checkpoint next OID");
589 :
590 0 : if (!got_multi)
591 0 : pg_log(PG_REPORT, " latest checkpoint next MultiXactId");
592 :
593 0 : if (!got_oldestmulti &&
594 0 : cluster->controldata.cat_ver >= MULTIXACT_FORMATCHANGE_CAT_VER)
595 0 : pg_log(PG_REPORT, " latest checkpoint oldest MultiXactId");
596 :
597 0 : if (!got_oldestxid)
598 0 : pg_log(PG_REPORT, " latest checkpoint oldestXID");
599 :
600 0 : if (!got_mxoff)
601 0 : pg_log(PG_REPORT, " latest checkpoint next MultiXactOffset");
602 :
603 0 : if (!live_check && !got_nextxlogfile)
604 0 : pg_log(PG_REPORT, " first WAL segment after reset");
605 :
606 0 : if (!got_float8_pass_by_value)
607 0 : pg_log(PG_REPORT, " float8 argument passing method");
608 :
609 0 : if (!got_align)
610 0 : pg_log(PG_REPORT, " maximum alignment");
611 :
612 0 : if (!got_blocksz)
613 0 : pg_log(PG_REPORT, " block size");
614 :
615 0 : if (!got_largesz)
616 0 : pg_log(PG_REPORT, " large relation segment size");
617 :
618 0 : if (!got_walsz)
619 0 : pg_log(PG_REPORT, " WAL block size");
620 :
621 0 : if (!got_walseg)
622 0 : pg_log(PG_REPORT, " WAL segment size");
623 :
624 0 : if (!got_ident)
625 0 : pg_log(PG_REPORT, " maximum identifier length");
626 :
627 0 : if (!got_index)
628 0 : pg_log(PG_REPORT, " maximum number of indexed columns");
629 :
630 0 : if (!got_toast)
631 0 : pg_log(PG_REPORT, " maximum TOAST chunk size");
632 :
633 0 : if (!got_large_object &&
634 0 : cluster->controldata.ctrl_ver >= LARGE_OBJECT_SIZE_PG_CONTROL_VER)
635 0 : pg_log(PG_REPORT, " large-object chunk size");
636 :
637 0 : if (!got_date_is_int)
638 0 : pg_log(PG_REPORT, " dates/times are integers?");
639 :
640 : /* value added in Postgres 9.3 */
641 0 : if (!got_data_checksum_version)
642 0 : pg_log(PG_REPORT, " data checksum version");
643 :
644 0 : pg_fatal("Cannot continue without required control information, terminating");
645 : }
646 36 : }
647 :
648 :
649 : /*
650 : * check_control_data()
651 : *
652 : * check to make sure the control data settings are compatible
653 : */
654 : void
655 18 : check_control_data(ControlData *oldctrl,
656 : ControlData *newctrl)
657 : {
658 18 : if (oldctrl->align == 0 || oldctrl->align != newctrl->align)
659 0 : pg_fatal("old and new pg_controldata alignments are invalid or do not match.\n"
660 : "Likely one cluster is a 32-bit install, the other 64-bit");
661 :
662 18 : if (oldctrl->blocksz == 0 || oldctrl->blocksz != newctrl->blocksz)
663 0 : pg_fatal("old and new pg_controldata block sizes are invalid or do not match");
664 :
665 18 : if (oldctrl->largesz == 0 || oldctrl->largesz != newctrl->largesz)
666 0 : pg_fatal("old and new pg_controldata maximum relation segment sizes are invalid or do not match");
667 :
668 18 : if (oldctrl->walsz == 0 || oldctrl->walsz != newctrl->walsz)
669 0 : pg_fatal("old and new pg_controldata WAL block sizes are invalid or do not match");
670 :
671 18 : if (oldctrl->walseg == 0 || oldctrl->walseg != newctrl->walseg)
672 0 : pg_fatal("old and new pg_controldata WAL segment sizes are invalid or do not match");
673 :
674 18 : if (oldctrl->ident == 0 || oldctrl->ident != newctrl->ident)
675 0 : pg_fatal("old and new pg_controldata maximum identifier lengths are invalid or do not match");
676 :
677 18 : if (oldctrl->index == 0 || oldctrl->index != newctrl->index)
678 0 : pg_fatal("old and new pg_controldata maximum indexed columns are invalid or do not match");
679 :
680 18 : if (oldctrl->toast == 0 || oldctrl->toast != newctrl->toast)
681 0 : pg_fatal("old and new pg_controldata maximum TOAST chunk sizes are invalid or do not match");
682 :
683 : /* large_object added in 9.5, so it might not exist in the old cluster */
684 18 : if (oldctrl->large_object != 0 &&
685 18 : oldctrl->large_object != newctrl->large_object)
686 0 : pg_fatal("old and new pg_controldata large-object chunk sizes are invalid or do not match");
687 :
688 18 : if (oldctrl->date_is_int != newctrl->date_is_int)
689 0 : pg_fatal("old and new pg_controldata date/time storage types do not match");
690 :
691 : /*
692 : * float8_pass_by_value does not need to match, but is used in
693 : * check_for_isn_and_int8_passing_mismatch().
694 : */
695 :
696 : /*
697 : * We might eventually allow upgrades from checksum to no-checksum
698 : * clusters.
699 : */
700 18 : if (oldctrl->data_checksum_version == 0 &&
701 0 : newctrl->data_checksum_version != 0)
702 0 : pg_fatal("old cluster does not use data checksums but the new one does");
703 18 : else if (oldctrl->data_checksum_version != 0 &&
704 18 : newctrl->data_checksum_version == 0)
705 0 : pg_fatal("old cluster uses data checksums but the new one does not");
706 18 : else if (oldctrl->data_checksum_version != newctrl->data_checksum_version)
707 0 : pg_fatal("old and new cluster pg_controldata checksum versions do not match");
708 18 : }
709 :
710 :
711 : void
712 0 : disable_old_cluster(void)
713 : {
714 : char old_path[MAXPGPATH],
715 : new_path[MAXPGPATH];
716 :
717 : /* rename pg_control so old server cannot be accidentally started */
718 0 : prep_status("Adding \".old\" suffix to old global/pg_control");
719 :
720 0 : snprintf(old_path, sizeof(old_path), "%s/global/pg_control", old_cluster.pgdata);
721 0 : snprintf(new_path, sizeof(new_path), "%s/global/pg_control.old", old_cluster.pgdata);
722 0 : if (pg_mv_file(old_path, new_path) != 0)
723 0 : pg_fatal("could not rename file \"%s\" to \"%s\": %m",
724 : old_path, new_path);
725 0 : check_ok();
726 :
727 0 : pg_log(PG_REPORT, "\n"
728 : "If you want to start the old cluster, you will need to remove\n"
729 : "the \".old\" suffix from %s/global/pg_control.old.\n"
730 : "Because \"link\" mode was used, the old cluster cannot be safely\n"
731 : "started once the new cluster has been started.",
732 : old_cluster.pgdata);
733 0 : }
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