Line data Source code
1 : /*
2 : * pg_upgrade.c
3 : *
4 : * main source file
5 : *
6 : * Copyright (c) 2010-2021, 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
19 : * in a cluster, they can diverge due to CLUSTER, REINDEX, or VACUUM
20 : * FULL. In the new cluster, pg_class.oid and pg_class.relfilenode will
21 : * be the same and will match the old pg_class.oid value. Because of
22 : * this, old/new pg_class.relfilenode values will not match if CLUSTER,
23 : * REINDEX, or VACUUM FULL have been performed in the old cluster.
24 : *
25 : * We control all assignments of pg_type.oid because these oids are stored
26 : * in user composite type values.
27 : *
28 : * We control all assignments of pg_enum.oid because these oids are stored
29 : * in user tables as enum values.
30 : *
31 : * We control all assignments of pg_authid.oid for historical reasons (the
32 : * oids used to be stored in pg_largeobject_metadata, which is now copied via
33 : * SQL commands), that might change at some point in the future.
34 : */
35 :
36 :
37 :
38 : #include "postgres_fe.h"
39 :
40 : #ifdef HAVE_LANGINFO_H
41 : #include <langinfo.h>
42 : #endif
43 :
44 : #include "catalog/pg_class_d.h"
45 : #include "common/file_perm.h"
46 : #include "common/logging.h"
47 : #include "common/restricted_token.h"
48 : #include "fe_utils/string_utils.h"
49 : #include "pg_upgrade.h"
50 :
51 : static void prepare_new_cluster(void);
52 : static void prepare_new_globals(void);
53 : static void create_new_objects(void);
54 : static void copy_xact_xlog_xid(void);
55 : static void set_frozenxids(bool minmxid_only);
56 : static void setup(char *argv0, bool *live_check);
57 : static void cleanup(void);
58 :
59 : ClusterInfo old_cluster,
60 : new_cluster;
61 : OSInfo os_info;
62 :
63 : char *output_files[] = {
64 : SERVER_LOG_FILE,
65 : #ifdef WIN32
66 : /* unique file for pg_ctl start */
67 : SERVER_START_LOG_FILE,
68 : #endif
69 : UTILITY_LOG_FILE,
70 : INTERNAL_LOG_FILE,
71 : NULL
72 : };
73 :
74 :
75 : int
76 2 : main(int argc, char **argv)
77 : {
78 2 : char *deletion_script_file_name = NULL;
79 2 : bool live_check = false;
80 :
81 2 : pg_logging_init(argv[0]);
82 2 : set_pglocale_pgservice(argv[0], PG_TEXTDOMAIN("pg_upgrade"));
83 :
84 : /* Set default restrictive mask until new cluster permissions are read */
85 2 : umask(PG_MODE_MASK_OWNER);
86 :
87 2 : parseCommandLine(argc, argv);
88 :
89 2 : get_restricted_token();
90 :
91 2 : adjust_data_dir(&old_cluster);
92 2 : adjust_data_dir(&new_cluster);
93 :
94 2 : setup(argv[0], &live_check);
95 :
96 2 : output_check_banner(live_check);
97 :
98 2 : check_cluster_versions();
99 :
100 2 : get_sock_dir(&old_cluster, live_check);
101 2 : get_sock_dir(&new_cluster, false);
102 :
103 2 : check_cluster_compatibility(live_check);
104 :
105 : /* Set mask based on PGDATA permissions */
106 2 : if (!GetDataDirectoryCreatePerm(new_cluster.pgdata))
107 0 : pg_fatal("could not read permissions of directory \"%s\": %s\n",
108 0 : new_cluster.pgdata, strerror(errno));
109 :
110 2 : umask(pg_mode_mask);
111 :
112 2 : check_and_dump_old_cluster(live_check);
113 :
114 :
115 : /* -- NEW -- */
116 2 : start_postmaster(&new_cluster, true);
117 :
118 2 : check_new_cluster();
119 2 : report_clusters_compatible();
120 :
121 2 : pg_log(PG_REPORT,
122 : "\n"
123 : "Performing Upgrade\n"
124 : "------------------\n");
125 :
126 2 : prepare_new_cluster();
127 :
128 2 : stop_postmaster(false);
129 :
130 : /*
131 : * Destructive Changes to New Cluster
132 : */
133 :
134 2 : copy_xact_xlog_xid();
135 :
136 : /* New now using xids of the old system */
137 :
138 : /* -- NEW -- */
139 2 : start_postmaster(&new_cluster, true);
140 :
141 2 : prepare_new_globals();
142 :
143 2 : create_new_objects();
144 :
145 2 : stop_postmaster(false);
146 :
147 : /*
148 : * Most failures happen in create_new_objects(), which has completed at
149 : * this point. We do this here because it is just before linking, which
150 : * will link the old and new cluster data files, preventing the old
151 : * cluster from being safely started once the new cluster is started.
152 : */
153 2 : if (user_opts.transfer_mode == TRANSFER_MODE_LINK)
154 0 : disable_old_cluster();
155 :
156 2 : transfer_all_new_tablespaces(&old_cluster.dbarr, &new_cluster.dbarr,
157 : old_cluster.pgdata, new_cluster.pgdata);
158 :
159 : /*
160 : * Assuming OIDs are only used in system tables, there is no need to
161 : * restore the OID counter because we have not transferred any OIDs from
162 : * the old system, but we do it anyway just in case. We do it late here
163 : * because there is no need to have the schema load use new oids.
164 : */
165 2 : prep_status("Setting next OID for new cluster");
166 2 : exec_prog(UTILITY_LOG_FILE, NULL, true, true,
167 : "\"%s/pg_resetwal\" -o %u \"%s\"",
168 : new_cluster.bindir, old_cluster.controldata.chkpnt_nxtoid,
169 : new_cluster.pgdata);
170 2 : check_ok();
171 :
172 2 : prep_status("Sync data directory to disk");
173 2 : exec_prog(UTILITY_LOG_FILE, NULL, true, true,
174 : "\"%s/initdb\" --sync-only \"%s\"", new_cluster.bindir,
175 : new_cluster.pgdata);
176 2 : check_ok();
177 :
178 2 : create_script_for_old_cluster_deletion(&deletion_script_file_name);
179 :
180 2 : issue_warnings_and_set_wal_level();
181 :
182 2 : pg_log(PG_REPORT,
183 : "\n"
184 : "Upgrade Complete\n"
185 : "----------------\n");
186 :
187 2 : output_completion_banner(deletion_script_file_name);
188 :
189 2 : pg_free(deletion_script_file_name);
190 :
191 2 : cleanup();
192 :
193 2 : return 0;
194 : }
195 :
196 :
197 : static void
198 2 : setup(char *argv0, bool *live_check)
199 : {
200 : /*
201 : * make sure the user has a clean environment, otherwise, we may confuse
202 : * libpq when we connect to one (or both) of the servers.
203 : */
204 2 : check_pghost_envvar();
205 :
206 : /*
207 : * In case the user hasn't specified the directory for the new binaries
208 : * with -B, default to using the path of the currently executed pg_upgrade
209 : * binary.
210 : */
211 2 : if (!new_cluster.bindir)
212 : {
213 : char exec_path[MAXPGPATH];
214 :
215 2 : if (find_my_exec(argv0, exec_path) < 0)
216 0 : pg_fatal("%s: could not find own program executable\n", argv0);
217 : /* Trim off program name and keep just path */
218 2 : *last_dir_separator(exec_path) = '\0';
219 2 : canonicalize_path(exec_path);
220 2 : new_cluster.bindir = pg_strdup(exec_path);
221 : }
222 :
223 2 : verify_directories();
224 :
225 : /* no postmasters should be running, except for a live check */
226 2 : if (pid_lock_file_exists(old_cluster.pgdata))
227 : {
228 : /*
229 : * If we have a postmaster.pid file, try to start the server. If it
230 : * starts, the pid file was stale, so stop the server. If it doesn't
231 : * start, assume the server is running. If the pid file is left over
232 : * from a server crash, this also allows any committed transactions
233 : * stored in the WAL to be replayed so they are not lost, because WAL
234 : * files are not transferred from old to new servers. We later check
235 : * for a clean shutdown.
236 : */
237 0 : if (start_postmaster(&old_cluster, false))
238 0 : stop_postmaster(false);
239 : else
240 : {
241 0 : if (!user_opts.check)
242 0 : pg_fatal("There seems to be a postmaster servicing the old cluster.\n"
243 : "Please shutdown that postmaster and try again.\n");
244 : else
245 0 : *live_check = true;
246 : }
247 : }
248 :
249 : /* same goes for the new postmaster */
250 2 : if (pid_lock_file_exists(new_cluster.pgdata))
251 : {
252 0 : if (start_postmaster(&new_cluster, false))
253 0 : stop_postmaster(false);
254 : else
255 0 : pg_fatal("There seems to be a postmaster servicing the new cluster.\n"
256 : "Please shutdown that postmaster and try again.\n");
257 : }
258 2 : }
259 :
260 :
261 : static void
262 2 : prepare_new_cluster(void)
263 : {
264 : /*
265 : * It would make more sense to freeze after loading the schema, but that
266 : * would cause us to lose the frozenxids restored by the load. We use
267 : * --analyze so autovacuum doesn't update statistics later
268 : */
269 2 : prep_status("Analyzing all rows in the new cluster");
270 2 : exec_prog(UTILITY_LOG_FILE, NULL, true, true,
271 : "\"%s/vacuumdb\" %s --all --analyze %s",
272 : new_cluster.bindir, cluster_conn_opts(&new_cluster),
273 2 : log_opts.verbose ? "--verbose" : "");
274 2 : check_ok();
275 :
276 : /*
277 : * We do freeze after analyze so pg_statistic is also frozen. template0 is
278 : * not frozen here, but data rows were frozen by initdb, and we set its
279 : * datfrozenxid, relfrozenxids, and relminmxid later to match the new xid
280 : * counter later.
281 : */
282 2 : prep_status("Freezing all rows in the new cluster");
283 2 : exec_prog(UTILITY_LOG_FILE, NULL, true, true,
284 : "\"%s/vacuumdb\" %s --all --freeze %s",
285 : new_cluster.bindir, cluster_conn_opts(&new_cluster),
286 2 : log_opts.verbose ? "--verbose" : "");
287 2 : check_ok();
288 2 : }
289 :
290 :
291 : static void
292 2 : prepare_new_globals(void)
293 : {
294 : /*
295 : * Before we restore anything, set frozenxids of initdb-created tables.
296 : */
297 2 : set_frozenxids(false);
298 :
299 : /*
300 : * Now restore global objects (roles and tablespaces).
301 : */
302 2 : prep_status("Restoring global objects in the new cluster");
303 :
304 2 : exec_prog(UTILITY_LOG_FILE, NULL, true, true,
305 : "\"%s/psql\" " EXEC_PSQL_ARGS " %s -f \"%s\"",
306 : new_cluster.bindir, cluster_conn_opts(&new_cluster),
307 : GLOBALS_DUMP_FILE);
308 2 : check_ok();
309 2 : }
310 :
311 :
312 : static void
313 2 : create_new_objects(void)
314 : {
315 : int dbnum;
316 :
317 2 : prep_status("Restoring database schemas in the new cluster\n");
318 :
319 : /*
320 : * We cannot process the template1 database concurrently with others,
321 : * because when it's transiently dropped, connection attempts would fail.
322 : * So handle it in a separate non-parallelized pass.
323 : */
324 12 : for (dbnum = 0; dbnum < old_cluster.dbarr.ndbs; dbnum++)
325 : {
326 : char sql_file_name[MAXPGPATH],
327 : log_file_name[MAXPGPATH];
328 12 : DbInfo *old_db = &old_cluster.dbarr.dbs[dbnum];
329 : const char *create_opts;
330 :
331 : /* Process only template1 in this pass */
332 12 : if (strcmp(old_db->db_name, "template1") != 0)
333 10 : continue;
334 :
335 2 : pg_log(PG_STATUS, "%s", old_db->db_name);
336 2 : snprintf(sql_file_name, sizeof(sql_file_name), DB_DUMP_FILE_MASK, old_db->db_oid);
337 2 : snprintf(log_file_name, sizeof(log_file_name), DB_DUMP_LOG_FILE_MASK, old_db->db_oid);
338 :
339 : /*
340 : * template1 database will already exist in the target installation,
341 : * so tell pg_restore to drop and recreate it; otherwise we would fail
342 : * to propagate its database-level properties.
343 : */
344 2 : create_opts = "--clean --create";
345 :
346 2 : exec_prog(log_file_name,
347 : NULL,
348 : true,
349 : true,
350 : "\"%s/pg_restore\" %s %s --exit-on-error --verbose "
351 : "--dbname postgres \"%s\"",
352 : new_cluster.bindir,
353 : cluster_conn_opts(&new_cluster),
354 : create_opts,
355 : sql_file_name);
356 :
357 2 : break; /* done once we've processed template1 */
358 : }
359 :
360 14 : for (dbnum = 0; dbnum < old_cluster.dbarr.ndbs; dbnum++)
361 : {
362 : char sql_file_name[MAXPGPATH],
363 : log_file_name[MAXPGPATH];
364 12 : DbInfo *old_db = &old_cluster.dbarr.dbs[dbnum];
365 : const char *create_opts;
366 :
367 : /* Skip template1 in this pass */
368 12 : if (strcmp(old_db->db_name, "template1") == 0)
369 2 : continue;
370 :
371 10 : pg_log(PG_STATUS, "%s", old_db->db_name);
372 10 : snprintf(sql_file_name, sizeof(sql_file_name), DB_DUMP_FILE_MASK, old_db->db_oid);
373 10 : snprintf(log_file_name, sizeof(log_file_name), DB_DUMP_LOG_FILE_MASK, old_db->db_oid);
374 :
375 : /*
376 : * postgres database will already exist in the target installation, so
377 : * tell pg_restore to drop and recreate it; otherwise we would fail to
378 : * propagate its database-level properties.
379 : */
380 10 : if (strcmp(old_db->db_name, "postgres") == 0)
381 2 : create_opts = "--clean --create";
382 : else
383 8 : create_opts = "--create";
384 :
385 10 : parallel_exec_prog(log_file_name,
386 : NULL,
387 : "\"%s/pg_restore\" %s %s --exit-on-error --verbose "
388 : "--dbname template1 \"%s\"",
389 : new_cluster.bindir,
390 : cluster_conn_opts(&new_cluster),
391 : create_opts,
392 : sql_file_name);
393 : }
394 :
395 : /* reap all children */
396 2 : while (reap_child(true) == true)
397 : ;
398 :
399 2 : end_progress_output();
400 2 : check_ok();
401 :
402 : /*
403 : * We don't have minmxids for databases or relations in pre-9.3 clusters,
404 : * so set those after we have restored the schema.
405 : */
406 2 : if (GET_MAJOR_VERSION(old_cluster.major_version) <= 902)
407 0 : set_frozenxids(true);
408 :
409 : /* update new_cluster info now that we have objects in the databases */
410 2 : get_db_and_rel_infos(&new_cluster);
411 2 : }
412 :
413 : /*
414 : * Delete the given subdirectory contents from the new cluster
415 : */
416 : static void
417 6 : remove_new_subdir(const char *subdir, bool rmtopdir)
418 : {
419 : char new_path[MAXPGPATH];
420 :
421 6 : prep_status("Deleting files from new %s", subdir);
422 :
423 6 : snprintf(new_path, sizeof(new_path), "%s/%s", new_cluster.pgdata, subdir);
424 6 : if (!rmtree(new_path, rmtopdir))
425 0 : pg_fatal("could not delete directory \"%s\"\n", new_path);
426 :
427 6 : check_ok();
428 6 : }
429 :
430 : /*
431 : * Copy the files from the old cluster into it
432 : */
433 : static void
434 6 : copy_subdir_files(const char *old_subdir, const char *new_subdir)
435 : {
436 : char old_path[MAXPGPATH];
437 : char new_path[MAXPGPATH];
438 :
439 6 : remove_new_subdir(new_subdir, true);
440 :
441 6 : snprintf(old_path, sizeof(old_path), "%s/%s", old_cluster.pgdata, old_subdir);
442 6 : snprintf(new_path, sizeof(new_path), "%s/%s", new_cluster.pgdata, new_subdir);
443 :
444 6 : prep_status("Copying old %s to new server", old_subdir);
445 :
446 6 : exec_prog(UTILITY_LOG_FILE, NULL, true, true,
447 : #ifndef WIN32
448 : "cp -Rf \"%s\" \"%s\"",
449 : #else
450 : /* flags: everything, no confirm, quiet, overwrite read-only */
451 : "xcopy /e /y /q /r \"%s\" \"%s\\\"",
452 : #endif
453 : old_path, new_path);
454 :
455 6 : check_ok();
456 6 : }
457 :
458 : static void
459 2 : copy_xact_xlog_xid(void)
460 : {
461 : /*
462 : * Copy old commit logs to new data dir. pg_clog has been renamed to
463 : * pg_xact in post-10 clusters.
464 : */
465 2 : copy_subdir_files(GET_MAJOR_VERSION(old_cluster.major_version) <= 906 ?
466 : "pg_clog" : "pg_xact",
467 2 : GET_MAJOR_VERSION(new_cluster.major_version) <= 906 ?
468 : "pg_clog" : "pg_xact");
469 :
470 2 : prep_status("Setting oldest XID for new cluster");
471 2 : exec_prog(UTILITY_LOG_FILE, NULL, true, true,
472 : "\"%s/pg_resetwal\" -f -u %u \"%s\"",
473 : new_cluster.bindir, old_cluster.controldata.chkpnt_oldstxid,
474 : new_cluster.pgdata);
475 2 : check_ok();
476 :
477 : /* set the next transaction id and epoch of the new cluster */
478 2 : prep_status("Setting next transaction ID and epoch for new cluster");
479 2 : exec_prog(UTILITY_LOG_FILE, NULL, true, true,
480 : "\"%s/pg_resetwal\" -f -x %u \"%s\"",
481 : new_cluster.bindir, old_cluster.controldata.chkpnt_nxtxid,
482 : new_cluster.pgdata);
483 2 : exec_prog(UTILITY_LOG_FILE, NULL, true, true,
484 : "\"%s/pg_resetwal\" -f -e %u \"%s\"",
485 : new_cluster.bindir, old_cluster.controldata.chkpnt_nxtepoch,
486 : new_cluster.pgdata);
487 : /* must reset commit timestamp limits also */
488 2 : exec_prog(UTILITY_LOG_FILE, NULL, true, true,
489 : "\"%s/pg_resetwal\" -f -c %u,%u \"%s\"",
490 : new_cluster.bindir,
491 : old_cluster.controldata.chkpnt_nxtxid,
492 : old_cluster.controldata.chkpnt_nxtxid,
493 : new_cluster.pgdata);
494 2 : check_ok();
495 :
496 : /*
497 : * If the old server is before the MULTIXACT_FORMATCHANGE_CAT_VER change
498 : * (see pg_upgrade.h) and the new server is after, then we don't copy
499 : * pg_multixact files, but we need to reset pg_control so that the new
500 : * server doesn't attempt to read multis older than the cutoff value.
501 : */
502 2 : if (old_cluster.controldata.cat_ver >= MULTIXACT_FORMATCHANGE_CAT_VER &&
503 2 : new_cluster.controldata.cat_ver >= MULTIXACT_FORMATCHANGE_CAT_VER)
504 : {
505 2 : copy_subdir_files("pg_multixact/offsets", "pg_multixact/offsets");
506 2 : copy_subdir_files("pg_multixact/members", "pg_multixact/members");
507 :
508 2 : prep_status("Setting next multixact ID and offset for new cluster");
509 :
510 : /*
511 : * we preserve all files and contents, so we must preserve both "next"
512 : * counters here and the oldest multi present on system.
513 : */
514 2 : exec_prog(UTILITY_LOG_FILE, NULL, true, true,
515 : "\"%s/pg_resetwal\" -O %u -m %u,%u \"%s\"",
516 : new_cluster.bindir,
517 : old_cluster.controldata.chkpnt_nxtmxoff,
518 : old_cluster.controldata.chkpnt_nxtmulti,
519 : old_cluster.controldata.chkpnt_oldstMulti,
520 : new_cluster.pgdata);
521 2 : check_ok();
522 : }
523 0 : else if (new_cluster.controldata.cat_ver >= MULTIXACT_FORMATCHANGE_CAT_VER)
524 : {
525 : /*
526 : * Remove offsets/0000 file created by initdb that no longer matches
527 : * the new multi-xid value. "members" starts at zero so no need to
528 : * remove it.
529 : */
530 0 : remove_new_subdir("pg_multixact/offsets", false);
531 :
532 0 : prep_status("Setting oldest multixact ID in new cluster");
533 :
534 : /*
535 : * We don't preserve files in this case, but it's important that the
536 : * oldest multi is set to the latest value used by the old system, so
537 : * that multixact.c returns the empty set for multis that might be
538 : * present on disk. We set next multi to the value following that; it
539 : * might end up wrapped around (i.e. 0) if the old cluster had
540 : * next=MaxMultiXactId, but multixact.c can cope with that just fine.
541 : */
542 0 : exec_prog(UTILITY_LOG_FILE, NULL, true, true,
543 : "\"%s/pg_resetwal\" -m %u,%u \"%s\"",
544 : new_cluster.bindir,
545 0 : old_cluster.controldata.chkpnt_nxtmulti + 1,
546 : old_cluster.controldata.chkpnt_nxtmulti,
547 : new_cluster.pgdata);
548 0 : check_ok();
549 : }
550 :
551 : /* now reset the wal archives in the new cluster */
552 2 : prep_status("Resetting WAL archives");
553 2 : exec_prog(UTILITY_LOG_FILE, NULL, true, true,
554 : /* use timeline 1 to match controldata and no WAL history file */
555 : "\"%s/pg_resetwal\" -l 00000001%s \"%s\"", new_cluster.bindir,
556 : old_cluster.controldata.nextxlogfile + 8,
557 : new_cluster.pgdata);
558 2 : check_ok();
559 2 : }
560 :
561 :
562 : /*
563 : * set_frozenxids()
564 : *
565 : * This is called on the new cluster before we restore anything, with
566 : * minmxid_only = false. Its purpose is to ensure that all initdb-created
567 : * vacuumable tables have relfrozenxid/relminmxid matching the old cluster's
568 : * xid/mxid counters. We also initialize the datfrozenxid/datminmxid of the
569 : * built-in databases to match.
570 : *
571 : * As we create user tables later, their relfrozenxid/relminmxid fields will
572 : * be restored properly by the binary-upgrade restore script. Likewise for
573 : * user-database datfrozenxid/datminmxid. However, if we're upgrading from a
574 : * pre-9.3 database, which does not store per-table or per-DB minmxid, then
575 : * the relminmxid/datminmxid values filled in by the restore script will just
576 : * be zeroes.
577 : *
578 : * Hence, with a pre-9.3 source database, a second call occurs after
579 : * everything is restored, with minmxid_only = true. This pass will
580 : * initialize all tables and databases, both those made by initdb and user
581 : * objects, with the desired minmxid value. frozenxid values are left alone.
582 : */
583 : static void
584 2 : set_frozenxids(bool minmxid_only)
585 : {
586 : int dbnum;
587 : PGconn *conn,
588 : *conn_template1;
589 : PGresult *dbres;
590 : int ntups;
591 : int i_datname;
592 : int i_datallowconn;
593 :
594 2 : if (!minmxid_only)
595 2 : prep_status("Setting frozenxid and minmxid counters in new cluster");
596 : else
597 0 : prep_status("Setting minmxid counter in new cluster");
598 :
599 2 : conn_template1 = connectToServer(&new_cluster, "template1");
600 :
601 2 : if (!minmxid_only)
602 : /* set pg_database.datfrozenxid */
603 2 : PQclear(executeQueryOrDie(conn_template1,
604 : "UPDATE pg_catalog.pg_database "
605 : "SET datfrozenxid = '%u'",
606 : old_cluster.controldata.chkpnt_nxtxid));
607 :
608 : /* set pg_database.datminmxid */
609 2 : PQclear(executeQueryOrDie(conn_template1,
610 : "UPDATE pg_catalog.pg_database "
611 : "SET datminmxid = '%u'",
612 : old_cluster.controldata.chkpnt_nxtmulti));
613 :
614 : /* get database names */
615 2 : dbres = executeQueryOrDie(conn_template1,
616 : "SELECT datname, datallowconn "
617 : "FROM pg_catalog.pg_database");
618 :
619 2 : i_datname = PQfnumber(dbres, "datname");
620 2 : i_datallowconn = PQfnumber(dbres, "datallowconn");
621 :
622 2 : ntups = PQntuples(dbres);
623 8 : for (dbnum = 0; dbnum < ntups; dbnum++)
624 : {
625 6 : char *datname = PQgetvalue(dbres, dbnum, i_datname);
626 6 : char *datallowconn = PQgetvalue(dbres, dbnum, i_datallowconn);
627 :
628 : /*
629 : * We must update databases where datallowconn = false, e.g.
630 : * template0, because autovacuum increments their datfrozenxids,
631 : * relfrozenxids, and relminmxid even if autovacuum is turned off, and
632 : * even though all the data rows are already frozen. To enable this,
633 : * we temporarily change datallowconn.
634 : */
635 6 : if (strcmp(datallowconn, "f") == 0)
636 2 : PQclear(executeQueryOrDie(conn_template1,
637 : "ALTER DATABASE %s ALLOW_CONNECTIONS = true",
638 : quote_identifier(datname)));
639 :
640 6 : conn = connectToServer(&new_cluster, datname);
641 :
642 6 : if (!minmxid_only)
643 : /* set pg_class.relfrozenxid */
644 6 : PQclear(executeQueryOrDie(conn,
645 : "UPDATE pg_catalog.pg_class "
646 : "SET relfrozenxid = '%u' "
647 : /* only heap, materialized view, and TOAST are vacuumed */
648 : "WHERE relkind IN ("
649 : CppAsString2(RELKIND_RELATION) ", "
650 : CppAsString2(RELKIND_MATVIEW) ", "
651 : CppAsString2(RELKIND_TOASTVALUE) ")",
652 : old_cluster.controldata.chkpnt_nxtxid));
653 :
654 : /* set pg_class.relminmxid */
655 6 : PQclear(executeQueryOrDie(conn,
656 : "UPDATE pg_catalog.pg_class "
657 : "SET relminmxid = '%u' "
658 : /* only heap, materialized view, and TOAST are vacuumed */
659 : "WHERE relkind IN ("
660 : CppAsString2(RELKIND_RELATION) ", "
661 : CppAsString2(RELKIND_MATVIEW) ", "
662 : CppAsString2(RELKIND_TOASTVALUE) ")",
663 : old_cluster.controldata.chkpnt_nxtmulti));
664 6 : PQfinish(conn);
665 :
666 : /* Reset datallowconn flag */
667 6 : if (strcmp(datallowconn, "f") == 0)
668 2 : PQclear(executeQueryOrDie(conn_template1,
669 : "ALTER DATABASE %s ALLOW_CONNECTIONS = false",
670 : quote_identifier(datname)));
671 : }
672 :
673 2 : PQclear(dbres);
674 :
675 2 : PQfinish(conn_template1);
676 :
677 2 : check_ok();
678 2 : }
679 :
680 :
681 : static void
682 2 : cleanup(void)
683 : {
684 2 : fclose(log_opts.internal);
685 :
686 : /* Remove dump and log files? */
687 2 : if (!log_opts.retain)
688 : {
689 : int dbnum;
690 : char **filename;
691 :
692 8 : for (filename = output_files; *filename != NULL; filename++)
693 6 : unlink(*filename);
694 :
695 : /* remove dump files */
696 2 : unlink(GLOBALS_DUMP_FILE);
697 :
698 2 : if (old_cluster.dbarr.dbs)
699 14 : for (dbnum = 0; dbnum < old_cluster.dbarr.ndbs; dbnum++)
700 : {
701 : char sql_file_name[MAXPGPATH],
702 : log_file_name[MAXPGPATH];
703 12 : DbInfo *old_db = &old_cluster.dbarr.dbs[dbnum];
704 :
705 12 : snprintf(sql_file_name, sizeof(sql_file_name), DB_DUMP_FILE_MASK, old_db->db_oid);
706 12 : unlink(sql_file_name);
707 :
708 12 : snprintf(log_file_name, sizeof(log_file_name), DB_DUMP_LOG_FILE_MASK, old_db->db_oid);
709 12 : unlink(log_file_name);
710 : }
711 : }
712 2 : }
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