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