Line data Source code
1 : /*
2 : * pg_upgrade.c
3 : *
4 : * main source file
5 : *
6 : * Copyright (c) 2010-2024, PostgreSQL Global Development Group
7 : * src/bin/pg_upgrade/pg_upgrade.c
8 : */
9 :
10 : /*
11 : * To simplify the upgrade process, we force certain system values to be
12 : * identical between old and new clusters:
13 : *
14 : * We control all assignments of pg_class.oid (and relfilenode) so toast
15 : * oids are the same between old and new clusters. This is important
16 : * because toast oids are stored as toast pointers in user tables.
17 : *
18 : * While pg_class.oid and pg_class.relfilenode are initially the same in a
19 : * cluster, they can diverge due to CLUSTER, REINDEX, or VACUUM FULL. We
20 : * control assignments of pg_class.relfilenode because we want the filenames
21 : * to match between the old and new cluster.
22 : *
23 : * We control assignment of pg_tablespace.oid because we want the oid to match
24 : * between the old and new cluster.
25 : *
26 : * We control all assignments of pg_type.oid because these oids are stored
27 : * in user composite type values.
28 : *
29 : * We control all assignments of pg_enum.oid because these oids are stored
30 : * in user tables as enum values.
31 : *
32 : * We control all assignments of pg_authid.oid for historical reasons (the
33 : * oids used to be stored in pg_largeobject_metadata, which is now copied via
34 : * SQL commands), that might change at some point in the future.
35 : */
36 :
37 :
38 :
39 : #include "postgres_fe.h"
40 :
41 : #include <time.h>
42 :
43 : #ifdef HAVE_LANGINFO_H
44 : #include <langinfo.h>
45 : #endif
46 :
47 : #include "catalog/pg_class_d.h"
48 : #include "common/file_perm.h"
49 : #include "common/logging.h"
50 : #include "common/restricted_token.h"
51 : #include "fe_utils/string_utils.h"
52 : #include "pg_upgrade.h"
53 :
54 : /*
55 : * Maximum number of pg_restore actions (TOC entries) to process within one
56 : * transaction. At some point we might want to make this user-controllable,
57 : * but for now a hard-wired setting will suffice.
58 : */
59 : #define RESTORE_TRANSACTION_SIZE 1000
60 :
61 : static void set_locale_and_encoding(void);
62 : static void prepare_new_cluster(void);
63 : static void prepare_new_globals(void);
64 : static void create_new_objects(void);
65 : static void copy_xact_xlog_xid(void);
66 : static void set_frozenxids(bool minmxid_only);
67 : static void make_outputdirs(char *pgdata);
68 : static void setup(char *argv0, bool *live_check);
69 : static void create_logical_replication_slots(void);
70 :
71 : ClusterInfo old_cluster,
72 : new_cluster;
73 : OSInfo os_info;
74 :
75 : char *output_files[] = {
76 : SERVER_LOG_FILE,
77 : #ifdef WIN32
78 : /* unique file for pg_ctl start */
79 : SERVER_START_LOG_FILE,
80 : #endif
81 : UTILITY_LOG_FILE,
82 : INTERNAL_LOG_FILE,
83 : NULL
84 : };
85 :
86 :
87 : int
88 26 : main(int argc, char **argv)
89 : {
90 26 : char *deletion_script_file_name = NULL;
91 26 : bool live_check = false;
92 :
93 : /*
94 : * pg_upgrade doesn't currently use common/logging.c, but initialize it
95 : * anyway because we might call common code that does.
96 : */
97 26 : pg_logging_init(argv[0]);
98 26 : set_pglocale_pgservice(argv[0], PG_TEXTDOMAIN("pg_upgrade"));
99 :
100 : /* Set default restrictive mask until new cluster permissions are read */
101 26 : umask(PG_MODE_MASK_OWNER);
102 :
103 26 : parseCommandLine(argc, argv);
104 :
105 20 : get_restricted_token();
106 :
107 20 : adjust_data_dir(&old_cluster);
108 20 : adjust_data_dir(&new_cluster);
109 :
110 : /*
111 : * Set mask based on PGDATA permissions, needed for the creation of the
112 : * output directories with correct permissions.
113 : */
114 20 : if (!GetDataDirectoryCreatePerm(new_cluster.pgdata))
115 0 : pg_fatal("could not read permissions of directory \"%s\": %m",
116 : new_cluster.pgdata);
117 :
118 20 : umask(pg_mode_mask);
119 :
120 : /*
121 : * This needs to happen after adjusting the data directory of the new
122 : * cluster in adjust_data_dir().
123 : */
124 20 : make_outputdirs(new_cluster.pgdata);
125 :
126 20 : setup(argv[0], &live_check);
127 :
128 18 : output_check_banner(live_check);
129 :
130 18 : check_cluster_versions();
131 :
132 18 : get_sock_dir(&old_cluster, live_check);
133 18 : get_sock_dir(&new_cluster, false);
134 :
135 18 : check_cluster_compatibility(live_check);
136 :
137 18 : check_and_dump_old_cluster(live_check);
138 :
139 :
140 : /* -- NEW -- */
141 12 : start_postmaster(&new_cluster, true);
142 :
143 12 : check_new_cluster();
144 8 : report_clusters_compatible();
145 :
146 6 : pg_log(PG_REPORT,
147 : "\n"
148 : "Performing Upgrade\n"
149 : "------------------");
150 :
151 6 : set_locale_and_encoding();
152 :
153 6 : prepare_new_cluster();
154 :
155 6 : stop_postmaster(false);
156 :
157 : /*
158 : * Destructive Changes to New Cluster
159 : */
160 :
161 6 : copy_xact_xlog_xid();
162 :
163 : /* New now using xids of the old system */
164 :
165 : /* -- NEW -- */
166 6 : start_postmaster(&new_cluster, true);
167 :
168 6 : prepare_new_globals();
169 :
170 6 : create_new_objects();
171 :
172 6 : stop_postmaster(false);
173 :
174 : /*
175 : * Most failures happen in create_new_objects(), which has completed at
176 : * this point. We do this here because it is just before linking, which
177 : * will link the old and new cluster data files, preventing the old
178 : * cluster from being safely started once the new cluster is started.
179 : */
180 6 : if (user_opts.transfer_mode == TRANSFER_MODE_LINK)
181 0 : disable_old_cluster();
182 :
183 6 : transfer_all_new_tablespaces(&old_cluster.dbarr, &new_cluster.dbarr,
184 : old_cluster.pgdata, new_cluster.pgdata);
185 :
186 : /*
187 : * Assuming OIDs are only used in system tables, there is no need to
188 : * restore the OID counter because we have not transferred any OIDs from
189 : * the old system, but we do it anyway just in case. We do it late here
190 : * because there is no need to have the schema load use new oids.
191 : */
192 6 : prep_status("Setting next OID for new cluster");
193 6 : exec_prog(UTILITY_LOG_FILE, NULL, true, true,
194 : "\"%s/pg_resetwal\" -o %u \"%s\"",
195 : new_cluster.bindir, old_cluster.controldata.chkpnt_nxtoid,
196 : new_cluster.pgdata);
197 6 : check_ok();
198 :
199 : /*
200 : * Migrate the logical slots to the new cluster. Note that we need to do
201 : * this after resetting WAL because otherwise the required WAL would be
202 : * removed and slots would become unusable. There is a possibility that
203 : * background processes might generate some WAL before we could create the
204 : * slots in the new cluster but we can ignore that WAL as that won't be
205 : * required downstream.
206 : */
207 6 : if (count_old_cluster_logical_slots())
208 : {
209 2 : start_postmaster(&new_cluster, true);
210 2 : create_logical_replication_slots();
211 2 : stop_postmaster(false);
212 : }
213 :
214 6 : if (user_opts.do_sync)
215 : {
216 0 : prep_status("Sync data directory to disk");
217 0 : exec_prog(UTILITY_LOG_FILE, NULL, true, true,
218 : "\"%s/initdb\" --sync-only \"%s\" --sync-method %s",
219 : new_cluster.bindir,
220 : new_cluster.pgdata,
221 : user_opts.sync_method);
222 0 : check_ok();
223 : }
224 :
225 6 : create_script_for_old_cluster_deletion(&deletion_script_file_name);
226 :
227 6 : issue_warnings_and_set_wal_level();
228 :
229 6 : pg_log(PG_REPORT,
230 : "\n"
231 : "Upgrade Complete\n"
232 : "----------------");
233 :
234 6 : output_completion_banner(deletion_script_file_name);
235 :
236 6 : pg_free(deletion_script_file_name);
237 :
238 6 : cleanup_output_dirs();
239 :
240 6 : return 0;
241 : }
242 :
243 : /*
244 : * Create and assign proper permissions to the set of output directories
245 : * used to store any data generated internally, filling in log_opts in
246 : * the process.
247 : */
248 : static void
249 20 : make_outputdirs(char *pgdata)
250 : {
251 : FILE *fp;
252 : char **filename;
253 20 : time_t run_time = time(NULL);
254 : char filename_path[MAXPGPATH];
255 : char timebuf[128];
256 : struct timeval time;
257 : time_t tt;
258 : int len;
259 :
260 20 : log_opts.rootdir = (char *) pg_malloc0(MAXPGPATH);
261 20 : len = snprintf(log_opts.rootdir, MAXPGPATH, "%s/%s", pgdata, BASE_OUTPUTDIR);
262 20 : if (len >= MAXPGPATH)
263 0 : pg_fatal("directory path for new cluster is too long");
264 :
265 : /* BASE_OUTPUTDIR/$timestamp/ */
266 20 : gettimeofday(&time, NULL);
267 20 : tt = (time_t) time.tv_sec;
268 20 : strftime(timebuf, sizeof(timebuf), "%Y%m%dT%H%M%S", localtime(&tt));
269 : /* append milliseconds */
270 20 : snprintf(timebuf + strlen(timebuf), sizeof(timebuf) - strlen(timebuf),
271 20 : ".%03d", (int) (time.tv_usec / 1000));
272 20 : log_opts.basedir = (char *) pg_malloc0(MAXPGPATH);
273 20 : len = snprintf(log_opts.basedir, MAXPGPATH, "%s/%s", log_opts.rootdir,
274 : timebuf);
275 20 : if (len >= MAXPGPATH)
276 0 : pg_fatal("directory path for new cluster is too long");
277 :
278 : /* BASE_OUTPUTDIR/$timestamp/dump/ */
279 20 : log_opts.dumpdir = (char *) pg_malloc0(MAXPGPATH);
280 20 : len = snprintf(log_opts.dumpdir, MAXPGPATH, "%s/%s/%s", log_opts.rootdir,
281 : timebuf, DUMP_OUTPUTDIR);
282 20 : if (len >= MAXPGPATH)
283 0 : pg_fatal("directory path for new cluster is too long");
284 :
285 : /* BASE_OUTPUTDIR/$timestamp/log/ */
286 20 : log_opts.logdir = (char *) pg_malloc0(MAXPGPATH);
287 20 : len = snprintf(log_opts.logdir, MAXPGPATH, "%s/%s/%s", log_opts.rootdir,
288 : timebuf, LOG_OUTPUTDIR);
289 20 : if (len >= MAXPGPATH)
290 0 : pg_fatal("directory path for new cluster is too long");
291 :
292 : /*
293 : * Ignore the error case where the root path exists, as it is kept the
294 : * same across runs.
295 : */
296 20 : if (mkdir(log_opts.rootdir, pg_dir_create_mode) < 0 && errno != EEXIST)
297 0 : pg_fatal("could not create directory \"%s\": %m", log_opts.rootdir);
298 20 : if (mkdir(log_opts.basedir, pg_dir_create_mode) < 0)
299 0 : pg_fatal("could not create directory \"%s\": %m", log_opts.basedir);
300 20 : if (mkdir(log_opts.dumpdir, pg_dir_create_mode) < 0)
301 0 : pg_fatal("could not create directory \"%s\": %m", log_opts.dumpdir);
302 20 : if (mkdir(log_opts.logdir, pg_dir_create_mode) < 0)
303 0 : pg_fatal("could not create directory \"%s\": %m", log_opts.logdir);
304 :
305 20 : len = snprintf(filename_path, sizeof(filename_path), "%s/%s",
306 : log_opts.logdir, INTERNAL_LOG_FILE);
307 20 : if (len >= sizeof(filename_path))
308 0 : pg_fatal("directory path for new cluster is too long");
309 :
310 20 : if ((log_opts.internal = fopen_priv(filename_path, "a")) == NULL)
311 0 : pg_fatal("could not open log file \"%s\": %m", filename_path);
312 :
313 : /* label start of upgrade in logfiles */
314 80 : for (filename = output_files; *filename != NULL; filename++)
315 : {
316 60 : len = snprintf(filename_path, sizeof(filename_path), "%s/%s",
317 : log_opts.logdir, *filename);
318 60 : if (len >= sizeof(filename_path))
319 0 : pg_fatal("directory path for new cluster is too long");
320 60 : if ((fp = fopen_priv(filename_path, "a")) == NULL)
321 0 : pg_fatal("could not write to log file \"%s\": %m", filename_path);
322 :
323 60 : fprintf(fp,
324 : "-----------------------------------------------------------------\n"
325 : " pg_upgrade run on %s"
326 : "-----------------------------------------------------------------\n\n",
327 : ctime(&run_time));
328 60 : fclose(fp);
329 : }
330 20 : }
331 :
332 :
333 : static void
334 20 : setup(char *argv0, bool *live_check)
335 : {
336 : /*
337 : * make sure the user has a clean environment, otherwise, we may confuse
338 : * libpq when we connect to one (or both) of the servers.
339 : */
340 20 : check_pghost_envvar();
341 :
342 : /*
343 : * In case the user hasn't specified the directory for the new binaries
344 : * with -B, default to using the path of the currently executed pg_upgrade
345 : * binary.
346 : */
347 20 : if (!new_cluster.bindir)
348 : {
349 : char exec_path[MAXPGPATH];
350 :
351 0 : if (find_my_exec(argv0, exec_path) < 0)
352 0 : pg_fatal("%s: could not find own program executable", argv0);
353 : /* Trim off program name and keep just path */
354 0 : *last_dir_separator(exec_path) = '\0';
355 0 : canonicalize_path(exec_path);
356 0 : new_cluster.bindir = pg_strdup(exec_path);
357 : }
358 :
359 20 : verify_directories();
360 :
361 : /* no postmasters should be running, except for a live check */
362 18 : if (pid_lock_file_exists(old_cluster.pgdata))
363 : {
364 : /*
365 : * If we have a postmaster.pid file, try to start the server. If it
366 : * starts, the pid file was stale, so stop the server. If it doesn't
367 : * start, assume the server is running. If the pid file is left over
368 : * from a server crash, this also allows any committed transactions
369 : * stored in the WAL to be replayed so they are not lost, because WAL
370 : * files are not transferred from old to new servers. We later check
371 : * for a clean shutdown.
372 : */
373 0 : if (start_postmaster(&old_cluster, false))
374 0 : stop_postmaster(false);
375 : else
376 : {
377 0 : if (!user_opts.check)
378 0 : pg_fatal("There seems to be a postmaster servicing the old cluster.\n"
379 : "Please shutdown that postmaster and try again.");
380 : else
381 0 : *live_check = true;
382 : }
383 : }
384 :
385 : /* same goes for the new postmaster */
386 18 : if (pid_lock_file_exists(new_cluster.pgdata))
387 : {
388 0 : if (start_postmaster(&new_cluster, false))
389 0 : stop_postmaster(false);
390 : else
391 0 : pg_fatal("There seems to be a postmaster servicing the new cluster.\n"
392 : "Please shutdown that postmaster and try again.");
393 : }
394 18 : }
395 :
396 :
397 : /*
398 : * Copy locale and encoding information into the new cluster's template0.
399 : *
400 : * We need to copy the encoding, datlocprovider, datcollate, datctype, and
401 : * datlocale. We don't need datcollversion because that's never set for
402 : * template0.
403 : */
404 : static void
405 6 : set_locale_and_encoding(void)
406 : {
407 : PGconn *conn_new_template1;
408 : char *datcollate_literal;
409 : char *datctype_literal;
410 6 : char *datlocale_literal = NULL;
411 6 : DbLocaleInfo *locale = old_cluster.template0;
412 :
413 6 : prep_status("Setting locale and encoding for new cluster");
414 :
415 : /* escape literals with respect to new cluster */
416 6 : conn_new_template1 = connectToServer(&new_cluster, "template1");
417 :
418 6 : datcollate_literal = PQescapeLiteral(conn_new_template1,
419 6 : locale->db_collate,
420 6 : strlen(locale->db_collate));
421 6 : datctype_literal = PQescapeLiteral(conn_new_template1,
422 6 : locale->db_ctype,
423 6 : strlen(locale->db_ctype));
424 6 : if (locale->db_locale)
425 2 : datlocale_literal = PQescapeLiteral(conn_new_template1,
426 2 : locale->db_locale,
427 2 : strlen(locale->db_locale));
428 : else
429 4 : datlocale_literal = pg_strdup("NULL");
430 :
431 : /* update template0 in new cluster */
432 6 : if (GET_MAJOR_VERSION(new_cluster.major_version) >= 1700)
433 6 : PQclear(executeQueryOrDie(conn_new_template1,
434 : "UPDATE pg_catalog.pg_database "
435 : " SET encoding = %d, "
436 : " datlocprovider = '%c', "
437 : " datcollate = %s, "
438 : " datctype = %s, "
439 : " datlocale = %s "
440 : " WHERE datname = 'template0' ",
441 : locale->db_encoding,
442 6 : locale->db_collprovider,
443 : datcollate_literal,
444 : datctype_literal,
445 : datlocale_literal));
446 0 : else if (GET_MAJOR_VERSION(new_cluster.major_version) >= 1500)
447 0 : PQclear(executeQueryOrDie(conn_new_template1,
448 : "UPDATE pg_catalog.pg_database "
449 : " SET encoding = %d, "
450 : " datlocprovider = '%c', "
451 : " datcollate = %s, "
452 : " datctype = %s, "
453 : " daticulocale = %s "
454 : " WHERE datname = 'template0' ",
455 : locale->db_encoding,
456 0 : locale->db_collprovider,
457 : datcollate_literal,
458 : datctype_literal,
459 : datlocale_literal));
460 : else
461 0 : PQclear(executeQueryOrDie(conn_new_template1,
462 : "UPDATE pg_catalog.pg_database "
463 : " SET encoding = %d, "
464 : " datcollate = %s, "
465 : " datctype = %s "
466 : " WHERE datname = 'template0' ",
467 : locale->db_encoding,
468 : datcollate_literal,
469 : datctype_literal));
470 :
471 6 : PQfreemem(datcollate_literal);
472 6 : PQfreemem(datctype_literal);
473 6 : PQfreemem(datlocale_literal);
474 :
475 6 : PQfinish(conn_new_template1);
476 :
477 6 : check_ok();
478 6 : }
479 :
480 :
481 : static void
482 6 : prepare_new_cluster(void)
483 : {
484 : /*
485 : * It would make more sense to freeze after loading the schema, but that
486 : * would cause us to lose the frozenxids restored by the load. We use
487 : * --analyze so autovacuum doesn't update statistics later
488 : */
489 6 : prep_status("Analyzing all rows in the new cluster");
490 6 : exec_prog(UTILITY_LOG_FILE, NULL, true, true,
491 : "\"%s/vacuumdb\" %s --all --analyze %s",
492 : new_cluster.bindir, cluster_conn_opts(&new_cluster),
493 6 : log_opts.verbose ? "--verbose" : "");
494 6 : check_ok();
495 :
496 : /*
497 : * We do freeze after analyze so pg_statistic is also frozen. template0 is
498 : * not frozen here, but data rows were frozen by initdb, and we set its
499 : * datfrozenxid, relfrozenxids, and relminmxid later to match the new xid
500 : * counter later.
501 : */
502 6 : prep_status("Freezing all rows in the new cluster");
503 6 : exec_prog(UTILITY_LOG_FILE, NULL, true, true,
504 : "\"%s/vacuumdb\" %s --all --freeze %s",
505 : new_cluster.bindir, cluster_conn_opts(&new_cluster),
506 6 : log_opts.verbose ? "--verbose" : "");
507 6 : check_ok();
508 6 : }
509 :
510 :
511 : static void
512 6 : prepare_new_globals(void)
513 : {
514 : /*
515 : * Before we restore anything, set frozenxids of initdb-created tables.
516 : */
517 6 : set_frozenxids(false);
518 :
519 : /*
520 : * Now restore global objects (roles and tablespaces).
521 : */
522 6 : prep_status("Restoring global objects in the new cluster");
523 :
524 6 : exec_prog(UTILITY_LOG_FILE, NULL, true, true,
525 : "\"%s/psql\" " EXEC_PSQL_ARGS " %s -f \"%s/%s\"",
526 : new_cluster.bindir, cluster_conn_opts(&new_cluster),
527 : log_opts.dumpdir,
528 : GLOBALS_DUMP_FILE);
529 6 : check_ok();
530 6 : }
531 :
532 :
533 : static void
534 6 : create_new_objects(void)
535 : {
536 : int dbnum;
537 :
538 6 : prep_status_progress("Restoring database schemas in the new cluster");
539 :
540 : /*
541 : * We cannot process the template1 database concurrently with others,
542 : * because when it's transiently dropped, connection attempts would fail.
543 : * So handle it in a separate non-parallelized pass.
544 : */
545 6 : for (dbnum = 0; dbnum < old_cluster.dbarr.ndbs; dbnum++)
546 : {
547 : char sql_file_name[MAXPGPATH],
548 : log_file_name[MAXPGPATH];
549 6 : DbInfo *old_db = &old_cluster.dbarr.dbs[dbnum];
550 : const char *create_opts;
551 :
552 : /* Process only template1 in this pass */
553 6 : if (strcmp(old_db->db_name, "template1") != 0)
554 0 : continue;
555 :
556 6 : pg_log(PG_STATUS, "%s", old_db->db_name);
557 6 : snprintf(sql_file_name, sizeof(sql_file_name), DB_DUMP_FILE_MASK, old_db->db_oid);
558 6 : snprintf(log_file_name, sizeof(log_file_name), DB_DUMP_LOG_FILE_MASK, old_db->db_oid);
559 :
560 : /*
561 : * template1 database will already exist in the target installation,
562 : * so tell pg_restore to drop and recreate it; otherwise we would fail
563 : * to propagate its database-level properties.
564 : */
565 6 : create_opts = "--clean --create";
566 :
567 6 : exec_prog(log_file_name,
568 : NULL,
569 : true,
570 : true,
571 : "\"%s/pg_restore\" %s %s --exit-on-error --verbose "
572 : "--transaction-size=%d "
573 : "--dbname postgres \"%s/%s\"",
574 : new_cluster.bindir,
575 : cluster_conn_opts(&new_cluster),
576 : create_opts,
577 : RESTORE_TRANSACTION_SIZE,
578 : log_opts.dumpdir,
579 : sql_file_name);
580 :
581 6 : break; /* done once we've processed template1 */
582 : }
583 :
584 26 : for (dbnum = 0; dbnum < old_cluster.dbarr.ndbs; dbnum++)
585 : {
586 : char sql_file_name[MAXPGPATH],
587 : log_file_name[MAXPGPATH];
588 20 : DbInfo *old_db = &old_cluster.dbarr.dbs[dbnum];
589 : const char *create_opts;
590 : int txn_size;
591 :
592 : /* Skip template1 in this pass */
593 20 : if (strcmp(old_db->db_name, "template1") == 0)
594 6 : continue;
595 :
596 14 : pg_log(PG_STATUS, "%s", old_db->db_name);
597 14 : snprintf(sql_file_name, sizeof(sql_file_name), DB_DUMP_FILE_MASK, old_db->db_oid);
598 14 : snprintf(log_file_name, sizeof(log_file_name), DB_DUMP_LOG_FILE_MASK, old_db->db_oid);
599 :
600 : /*
601 : * postgres database will already exist in the target installation, so
602 : * tell pg_restore to drop and recreate it; otherwise we would fail to
603 : * propagate its database-level properties.
604 : */
605 14 : if (strcmp(old_db->db_name, "postgres") == 0)
606 6 : create_opts = "--clean --create";
607 : else
608 8 : create_opts = "--create";
609 :
610 : /*
611 : * In parallel mode, reduce the --transaction-size of each restore job
612 : * so that the total number of locks that could be held across all the
613 : * jobs stays in bounds.
614 : */
615 14 : txn_size = RESTORE_TRANSACTION_SIZE;
616 14 : if (user_opts.jobs > 1)
617 : {
618 0 : txn_size /= user_opts.jobs;
619 : /* Keep some sanity if -j is huge */
620 0 : txn_size = Max(txn_size, 10);
621 : }
622 :
623 14 : parallel_exec_prog(log_file_name,
624 : NULL,
625 : "\"%s/pg_restore\" %s %s --exit-on-error --verbose "
626 : "--transaction-size=%d "
627 : "--dbname template1 \"%s/%s\"",
628 : new_cluster.bindir,
629 : cluster_conn_opts(&new_cluster),
630 : create_opts,
631 : txn_size,
632 : log_opts.dumpdir,
633 : sql_file_name);
634 : }
635 :
636 : /* reap all children */
637 6 : while (reap_child(true) == true)
638 : ;
639 :
640 6 : end_progress_output();
641 6 : check_ok();
642 :
643 : /*
644 : * We don't have minmxids for databases or relations in pre-9.3 clusters,
645 : * so set those after we have restored the schema.
646 : */
647 6 : if (GET_MAJOR_VERSION(old_cluster.major_version) <= 902)
648 0 : set_frozenxids(true);
649 :
650 : /* update new_cluster info now that we have objects in the databases */
651 6 : get_db_rel_and_slot_infos(&new_cluster, false);
652 6 : }
653 :
654 : /*
655 : * Delete the given subdirectory contents from the new cluster
656 : */
657 : static void
658 18 : remove_new_subdir(const char *subdir, bool rmtopdir)
659 : {
660 : char new_path[MAXPGPATH];
661 :
662 18 : prep_status("Deleting files from new %s", subdir);
663 :
664 18 : snprintf(new_path, sizeof(new_path), "%s/%s", new_cluster.pgdata, subdir);
665 18 : if (!rmtree(new_path, rmtopdir))
666 0 : pg_fatal("could not delete directory \"%s\"", new_path);
667 :
668 18 : check_ok();
669 18 : }
670 :
671 : /*
672 : * Copy the files from the old cluster into it
673 : */
674 : static void
675 18 : copy_subdir_files(const char *old_subdir, const char *new_subdir)
676 : {
677 : char old_path[MAXPGPATH];
678 : char new_path[MAXPGPATH];
679 :
680 18 : remove_new_subdir(new_subdir, true);
681 :
682 18 : snprintf(old_path, sizeof(old_path), "%s/%s", old_cluster.pgdata, old_subdir);
683 18 : snprintf(new_path, sizeof(new_path), "%s/%s", new_cluster.pgdata, new_subdir);
684 :
685 18 : prep_status("Copying old %s to new server", old_subdir);
686 :
687 18 : exec_prog(UTILITY_LOG_FILE, NULL, true, true,
688 : #ifndef WIN32
689 : "cp -Rf \"%s\" \"%s\"",
690 : #else
691 : /* flags: everything, no confirm, quiet, overwrite read-only */
692 : "xcopy /e /y /q /r \"%s\" \"%s\\\"",
693 : #endif
694 : old_path, new_path);
695 :
696 18 : check_ok();
697 18 : }
698 :
699 : static void
700 6 : copy_xact_xlog_xid(void)
701 : {
702 : /*
703 : * Copy old commit logs to new data dir. pg_clog has been renamed to
704 : * pg_xact in post-10 clusters.
705 : */
706 6 : copy_subdir_files(GET_MAJOR_VERSION(old_cluster.major_version) <= 906 ?
707 : "pg_clog" : "pg_xact",
708 6 : GET_MAJOR_VERSION(new_cluster.major_version) <= 906 ?
709 : "pg_clog" : "pg_xact");
710 :
711 6 : prep_status("Setting oldest XID for new cluster");
712 6 : exec_prog(UTILITY_LOG_FILE, NULL, true, true,
713 : "\"%s/pg_resetwal\" -f -u %u \"%s\"",
714 : new_cluster.bindir, old_cluster.controldata.chkpnt_oldstxid,
715 : new_cluster.pgdata);
716 6 : check_ok();
717 :
718 : /* set the next transaction id and epoch of the new cluster */
719 6 : prep_status("Setting next transaction ID and epoch for new cluster");
720 6 : exec_prog(UTILITY_LOG_FILE, NULL, true, true,
721 : "\"%s/pg_resetwal\" -f -x %u \"%s\"",
722 : new_cluster.bindir, old_cluster.controldata.chkpnt_nxtxid,
723 : new_cluster.pgdata);
724 6 : exec_prog(UTILITY_LOG_FILE, NULL, true, true,
725 : "\"%s/pg_resetwal\" -f -e %u \"%s\"",
726 : new_cluster.bindir, old_cluster.controldata.chkpnt_nxtepoch,
727 : new_cluster.pgdata);
728 : /* must reset commit timestamp limits also */
729 6 : exec_prog(UTILITY_LOG_FILE, NULL, true, true,
730 : "\"%s/pg_resetwal\" -f -c %u,%u \"%s\"",
731 : new_cluster.bindir,
732 : old_cluster.controldata.chkpnt_nxtxid,
733 : old_cluster.controldata.chkpnt_nxtxid,
734 : new_cluster.pgdata);
735 6 : check_ok();
736 :
737 : /*
738 : * If the old server is before the MULTIXACT_FORMATCHANGE_CAT_VER change
739 : * (see pg_upgrade.h) and the new server is after, then we don't copy
740 : * pg_multixact files, but we need to reset pg_control so that the new
741 : * server doesn't attempt to read multis older than the cutoff value.
742 : */
743 6 : if (old_cluster.controldata.cat_ver >= MULTIXACT_FORMATCHANGE_CAT_VER &&
744 6 : new_cluster.controldata.cat_ver >= MULTIXACT_FORMATCHANGE_CAT_VER)
745 : {
746 6 : copy_subdir_files("pg_multixact/offsets", "pg_multixact/offsets");
747 6 : copy_subdir_files("pg_multixact/members", "pg_multixact/members");
748 :
749 6 : prep_status("Setting next multixact ID and offset for new cluster");
750 :
751 : /*
752 : * we preserve all files and contents, so we must preserve both "next"
753 : * counters here and the oldest multi present on system.
754 : */
755 6 : exec_prog(UTILITY_LOG_FILE, NULL, true, true,
756 : "\"%s/pg_resetwal\" -O %u -m %u,%u \"%s\"",
757 : new_cluster.bindir,
758 : old_cluster.controldata.chkpnt_nxtmxoff,
759 : old_cluster.controldata.chkpnt_nxtmulti,
760 : old_cluster.controldata.chkpnt_oldstMulti,
761 : new_cluster.pgdata);
762 6 : check_ok();
763 : }
764 0 : else if (new_cluster.controldata.cat_ver >= MULTIXACT_FORMATCHANGE_CAT_VER)
765 : {
766 : /*
767 : * Remove offsets/0000 file created by initdb that no longer matches
768 : * the new multi-xid value. "members" starts at zero so no need to
769 : * remove it.
770 : */
771 0 : remove_new_subdir("pg_multixact/offsets", false);
772 :
773 0 : prep_status("Setting oldest multixact ID in new cluster");
774 :
775 : /*
776 : * We don't preserve files in this case, but it's important that the
777 : * oldest multi is set to the latest value used by the old system, so
778 : * that multixact.c returns the empty set for multis that might be
779 : * present on disk. We set next multi to the value following that; it
780 : * might end up wrapped around (i.e. 0) if the old cluster had
781 : * next=MaxMultiXactId, but multixact.c can cope with that just fine.
782 : */
783 0 : exec_prog(UTILITY_LOG_FILE, NULL, true, true,
784 : "\"%s/pg_resetwal\" -m %u,%u \"%s\"",
785 : new_cluster.bindir,
786 0 : old_cluster.controldata.chkpnt_nxtmulti + 1,
787 : old_cluster.controldata.chkpnt_nxtmulti,
788 : new_cluster.pgdata);
789 0 : check_ok();
790 : }
791 :
792 : /* now reset the wal archives in the new cluster */
793 6 : prep_status("Resetting WAL archives");
794 6 : exec_prog(UTILITY_LOG_FILE, NULL, true, true,
795 : /* use timeline 1 to match controldata and no WAL history file */
796 : "\"%s/pg_resetwal\" -l 00000001%s \"%s\"", new_cluster.bindir,
797 : old_cluster.controldata.nextxlogfile + 8,
798 : new_cluster.pgdata);
799 6 : check_ok();
800 6 : }
801 :
802 :
803 : /*
804 : * set_frozenxids()
805 : *
806 : * This is called on the new cluster before we restore anything, with
807 : * minmxid_only = false. Its purpose is to ensure that all initdb-created
808 : * vacuumable tables have relfrozenxid/relminmxid matching the old cluster's
809 : * xid/mxid counters. We also initialize the datfrozenxid/datminmxid of the
810 : * built-in databases to match.
811 : *
812 : * As we create user tables later, their relfrozenxid/relminmxid fields will
813 : * be restored properly by the binary-upgrade restore script. Likewise for
814 : * user-database datfrozenxid/datminmxid. However, if we're upgrading from a
815 : * pre-9.3 database, which does not store per-table or per-DB minmxid, then
816 : * the relminmxid/datminmxid values filled in by the restore script will just
817 : * be zeroes.
818 : *
819 : * Hence, with a pre-9.3 source database, a second call occurs after
820 : * everything is restored, with minmxid_only = true. This pass will
821 : * initialize all tables and databases, both those made by initdb and user
822 : * objects, with the desired minmxid value. frozenxid values are left alone.
823 : */
824 : static void
825 6 : set_frozenxids(bool minmxid_only)
826 : {
827 : int dbnum;
828 : PGconn *conn,
829 : *conn_template1;
830 : PGresult *dbres;
831 : int ntups;
832 : int i_datname;
833 : int i_datallowconn;
834 :
835 6 : if (!minmxid_only)
836 6 : prep_status("Setting frozenxid and minmxid counters in new cluster");
837 : else
838 0 : prep_status("Setting minmxid counter in new cluster");
839 :
840 6 : conn_template1 = connectToServer(&new_cluster, "template1");
841 :
842 6 : if (!minmxid_only)
843 : /* set pg_database.datfrozenxid */
844 6 : PQclear(executeQueryOrDie(conn_template1,
845 : "UPDATE pg_catalog.pg_database "
846 : "SET datfrozenxid = '%u'",
847 : old_cluster.controldata.chkpnt_nxtxid));
848 :
849 : /* set pg_database.datminmxid */
850 6 : PQclear(executeQueryOrDie(conn_template1,
851 : "UPDATE pg_catalog.pg_database "
852 : "SET datminmxid = '%u'",
853 : old_cluster.controldata.chkpnt_nxtmulti));
854 :
855 : /* get database names */
856 6 : dbres = executeQueryOrDie(conn_template1,
857 : "SELECT datname, datallowconn "
858 : "FROM pg_catalog.pg_database");
859 :
860 6 : i_datname = PQfnumber(dbres, "datname");
861 6 : i_datallowconn = PQfnumber(dbres, "datallowconn");
862 :
863 6 : ntups = PQntuples(dbres);
864 24 : for (dbnum = 0; dbnum < ntups; dbnum++)
865 : {
866 18 : char *datname = PQgetvalue(dbres, dbnum, i_datname);
867 18 : char *datallowconn = PQgetvalue(dbres, dbnum, i_datallowconn);
868 :
869 : /*
870 : * We must update databases where datallowconn = false, e.g.
871 : * template0, because autovacuum increments their datfrozenxids,
872 : * relfrozenxids, and relminmxid even if autovacuum is turned off, and
873 : * even though all the data rows are already frozen. To enable this,
874 : * we temporarily change datallowconn.
875 : */
876 18 : if (strcmp(datallowconn, "f") == 0)
877 6 : PQclear(executeQueryOrDie(conn_template1,
878 : "ALTER DATABASE %s ALLOW_CONNECTIONS = true",
879 : quote_identifier(datname)));
880 :
881 18 : conn = connectToServer(&new_cluster, datname);
882 :
883 18 : if (!minmxid_only)
884 : /* set pg_class.relfrozenxid */
885 18 : PQclear(executeQueryOrDie(conn,
886 : "UPDATE pg_catalog.pg_class "
887 : "SET relfrozenxid = '%u' "
888 : /* only heap, materialized view, and TOAST are vacuumed */
889 : "WHERE relkind IN ("
890 : CppAsString2(RELKIND_RELATION) ", "
891 : CppAsString2(RELKIND_MATVIEW) ", "
892 : CppAsString2(RELKIND_TOASTVALUE) ")",
893 : old_cluster.controldata.chkpnt_nxtxid));
894 :
895 : /* set pg_class.relminmxid */
896 18 : PQclear(executeQueryOrDie(conn,
897 : "UPDATE pg_catalog.pg_class "
898 : "SET relminmxid = '%u' "
899 : /* only heap, materialized view, and TOAST are vacuumed */
900 : "WHERE relkind IN ("
901 : CppAsString2(RELKIND_RELATION) ", "
902 : CppAsString2(RELKIND_MATVIEW) ", "
903 : CppAsString2(RELKIND_TOASTVALUE) ")",
904 : old_cluster.controldata.chkpnt_nxtmulti));
905 18 : PQfinish(conn);
906 :
907 : /* Reset datallowconn flag */
908 18 : if (strcmp(datallowconn, "f") == 0)
909 6 : PQclear(executeQueryOrDie(conn_template1,
910 : "ALTER DATABASE %s ALLOW_CONNECTIONS = false",
911 : quote_identifier(datname)));
912 : }
913 :
914 6 : PQclear(dbres);
915 :
916 6 : PQfinish(conn_template1);
917 :
918 6 : check_ok();
919 6 : }
920 :
921 : /*
922 : * create_logical_replication_slots()
923 : *
924 : * Similar to create_new_objects() but only restores logical replication slots.
925 : */
926 : static void
927 2 : create_logical_replication_slots(void)
928 : {
929 2 : prep_status_progress("Restoring logical replication slots in the new cluster");
930 :
931 6 : for (int dbnum = 0; dbnum < old_cluster.dbarr.ndbs; dbnum++)
932 : {
933 4 : DbInfo *old_db = &old_cluster.dbarr.dbs[dbnum];
934 4 : LogicalSlotInfoArr *slot_arr = &old_db->slot_arr;
935 : PGconn *conn;
936 : PQExpBuffer query;
937 :
938 : /* Skip this database if there are no slots */
939 4 : if (slot_arr->nslots == 0)
940 2 : continue;
941 :
942 2 : conn = connectToServer(&new_cluster, old_db->db_name);
943 2 : query = createPQExpBuffer();
944 :
945 2 : pg_log(PG_STATUS, "%s", old_db->db_name);
946 :
947 4 : for (int slotnum = 0; slotnum < slot_arr->nslots; slotnum++)
948 : {
949 2 : LogicalSlotInfo *slot_info = &slot_arr->slots[slotnum];
950 :
951 : /* Constructs a query for creating logical replication slots */
952 2 : appendPQExpBuffer(query,
953 : "SELECT * FROM "
954 : "pg_catalog.pg_create_logical_replication_slot(");
955 2 : appendStringLiteralConn(query, slot_info->slotname, conn);
956 2 : appendPQExpBuffer(query, ", ");
957 2 : appendStringLiteralConn(query, slot_info->plugin, conn);
958 :
959 4 : appendPQExpBuffer(query, ", false, %s, %s);",
960 2 : slot_info->two_phase ? "true" : "false",
961 2 : slot_info->failover ? "true" : "false");
962 :
963 2 : PQclear(executeQueryOrDie(conn, "%s", query->data));
964 :
965 2 : resetPQExpBuffer(query);
966 : }
967 :
968 2 : PQfinish(conn);
969 :
970 2 : destroyPQExpBuffer(query);
971 : }
972 :
973 2 : end_progress_output();
974 2 : check_ok();
975 :
976 2 : return;
977 : }
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