Line data Source code
1 : /*
2 : * pg_upgrade.c
3 : *
4 : * main source file
5 : *
6 : * Copyright (c) 2010-2019, 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 *analyze_script_file_name = NULL;
79 2 : char *deletion_script_file_name = NULL;
80 2 : bool live_check = false;
81 :
82 2 : pg_logging_init(argv[0]);
83 2 : set_pglocale_pgservice(argv[0], PG_TEXTDOMAIN("pg_upgrade"));
84 :
85 : /* Set default restrictive mask until new cluster permissions are read */
86 2 : umask(PG_MODE_MASK_OWNER);
87 :
88 2 : parseCommandLine(argc, argv);
89 :
90 2 : get_restricted_token();
91 :
92 2 : adjust_data_dir(&old_cluster);
93 2 : adjust_data_dir(&new_cluster);
94 :
95 2 : setup(argv[0], &live_check);
96 :
97 2 : output_check_banner(live_check);
98 :
99 2 : check_cluster_versions();
100 :
101 2 : get_sock_dir(&old_cluster, live_check);
102 2 : get_sock_dir(&new_cluster, false);
103 :
104 2 : check_cluster_compatibility(live_check);
105 :
106 : /* Set mask based on PGDATA permissions */
107 2 : if (!GetDataDirectoryCreatePerm(new_cluster.pgdata))
108 0 : pg_fatal("could not read permissions of directory \"%s\": %s\n",
109 0 : new_cluster.pgdata, strerror(errno));
110 :
111 2 : umask(pg_mode_mask);
112 :
113 2 : check_and_dump_old_cluster(live_check);
114 :
115 :
116 : /* -- NEW -- */
117 2 : start_postmaster(&new_cluster, true);
118 :
119 2 : check_new_cluster();
120 2 : report_clusters_compatible();
121 :
122 2 : pg_log(PG_REPORT,
123 : "\n"
124 : "Performing Upgrade\n"
125 : "------------------\n");
126 :
127 2 : prepare_new_cluster();
128 :
129 2 : stop_postmaster(false);
130 :
131 : /*
132 : * Destructive Changes to New Cluster
133 : */
134 :
135 2 : copy_xact_xlog_xid();
136 :
137 : /* New now using xids of the old system */
138 :
139 : /* -- NEW -- */
140 2 : start_postmaster(&new_cluster, true);
141 :
142 2 : prepare_new_globals();
143 :
144 2 : create_new_objects();
145 :
146 2 : stop_postmaster(false);
147 :
148 : /*
149 : * Most failures happen in create_new_objects(), which has completed at
150 : * this point. We do this here because it is just before linking, which
151 : * will link the old and new cluster data files, preventing the old
152 : * cluster from being safely started once the new cluster is started.
153 : */
154 2 : if (user_opts.transfer_mode == TRANSFER_MODE_LINK)
155 0 : disable_old_cluster();
156 :
157 2 : transfer_all_new_tablespaces(&old_cluster.dbarr, &new_cluster.dbarr,
158 : old_cluster.pgdata, new_cluster.pgdata);
159 :
160 : /*
161 : * Assuming OIDs are only used in system tables, there is no need to
162 : * restore the OID counter because we have not transferred any OIDs from
163 : * the old system, but we do it anyway just in case. We do it late here
164 : * because there is no need to have the schema load use new oids.
165 : */
166 2 : prep_status("Setting next OID for new cluster");
167 2 : exec_prog(UTILITY_LOG_FILE, NULL, true, true,
168 : "\"%s/pg_resetwal\" -o %u \"%s\"",
169 : new_cluster.bindir, old_cluster.controldata.chkpnt_nxtoid,
170 : new_cluster.pgdata);
171 2 : check_ok();
172 :
173 2 : prep_status("Sync data directory to disk");
174 2 : exec_prog(UTILITY_LOG_FILE, NULL, true, true,
175 : "\"%s/initdb\" --sync-only \"%s\"", new_cluster.bindir,
176 : new_cluster.pgdata);
177 2 : check_ok();
178 :
179 2 : create_script_for_cluster_analyze(&analyze_script_file_name);
180 2 : create_script_for_old_cluster_deletion(&deletion_script_file_name);
181 :
182 2 : issue_warnings_and_set_wal_level();
183 :
184 2 : pg_log(PG_REPORT,
185 : "\n"
186 : "Upgrade Complete\n"
187 : "----------------\n");
188 :
189 2 : output_completion_banner(analyze_script_file_name,
190 : deletion_script_file_name);
191 :
192 2 : pg_free(analyze_script_file_name);
193 2 : pg_free(deletion_script_file_name);
194 :
195 2 : cleanup();
196 :
197 2 : return 0;
198 : }
199 :
200 :
201 : static void
202 2 : setup(char *argv0, bool *live_check)
203 : {
204 : /*
205 : * make sure the user has a clean environment, otherwise, we may confuse
206 : * libpq when we connect to one (or both) of the servers.
207 : */
208 2 : check_pghost_envvar();
209 :
210 : /*
211 : * In case the user hasn't specified the directory for the new binaries
212 : * with -B, default to using the path of the currently executed pg_upgrade
213 : * binary.
214 : */
215 2 : if (!new_cluster.bindir)
216 : {
217 : char exec_path[MAXPGPATH];
218 :
219 2 : if (find_my_exec(argv0, exec_path) < 0)
220 0 : pg_fatal("%s: could not find own program executable\n", argv0);
221 : /* Trim off program name and keep just path */
222 2 : *last_dir_separator(exec_path) = '\0';
223 2 : canonicalize_path(exec_path);
224 2 : new_cluster.bindir = pg_strdup(exec_path);
225 : }
226 :
227 2 : verify_directories();
228 :
229 : /* no postmasters should be running, except for a live check */
230 2 : if (pid_lock_file_exists(old_cluster.pgdata))
231 : {
232 : /*
233 : * If we have a postmaster.pid file, try to start the server. If it
234 : * starts, the pid file was stale, so stop the server. If it doesn't
235 : * start, assume the server is running. If the pid file is left over
236 : * from a server crash, this also allows any committed transactions
237 : * stored in the WAL to be replayed so they are not lost, because WAL
238 : * files are not transferred from old to new servers. We later check
239 : * for a clean shutdown.
240 : */
241 0 : if (start_postmaster(&old_cluster, false))
242 0 : stop_postmaster(false);
243 : else
244 : {
245 0 : if (!user_opts.check)
246 0 : pg_fatal("There seems to be a postmaster servicing the old cluster.\n"
247 : "Please shutdown that postmaster and try again.\n");
248 : else
249 0 : *live_check = true;
250 : }
251 : }
252 :
253 : /* same goes for the new postmaster */
254 2 : if (pid_lock_file_exists(new_cluster.pgdata))
255 : {
256 0 : if (start_postmaster(&new_cluster, false))
257 0 : stop_postmaster(false);
258 : else
259 0 : pg_fatal("There seems to be a postmaster servicing the new cluster.\n"
260 : "Please shutdown that postmaster and try again.\n");
261 : }
262 2 : }
263 :
264 :
265 : static void
266 2 : prepare_new_cluster(void)
267 : {
268 : /*
269 : * It would make more sense to freeze after loading the schema, but that
270 : * would cause us to lose the frozenxids restored by the load. We use
271 : * --analyze so autovacuum doesn't update statistics later
272 : */
273 2 : prep_status("Analyzing all rows in the new cluster");
274 2 : exec_prog(UTILITY_LOG_FILE, NULL, true, true,
275 : "\"%s/vacuumdb\" %s --all --analyze %s",
276 : new_cluster.bindir, cluster_conn_opts(&new_cluster),
277 2 : log_opts.verbose ? "--verbose" : "");
278 2 : check_ok();
279 :
280 : /*
281 : * We do freeze after analyze so pg_statistic is also frozen. template0 is
282 : * not frozen here, but data rows were frozen by initdb, and we set its
283 : * datfrozenxid, relfrozenxids, and relminmxid later to match the new xid
284 : * counter later.
285 : */
286 2 : prep_status("Freezing all rows in the new cluster");
287 2 : exec_prog(UTILITY_LOG_FILE, NULL, true, true,
288 : "\"%s/vacuumdb\" %s --all --freeze %s",
289 : new_cluster.bindir, cluster_conn_opts(&new_cluster),
290 2 : log_opts.verbose ? "--verbose" : "");
291 2 : check_ok();
292 2 : }
293 :
294 :
295 : static void
296 2 : prepare_new_globals(void)
297 : {
298 : /*
299 : * Before we restore anything, set frozenxids of initdb-created tables.
300 : */
301 2 : set_frozenxids(false);
302 :
303 : /*
304 : * Now restore global objects (roles and tablespaces).
305 : */
306 2 : prep_status("Restoring global objects in the new cluster");
307 :
308 2 : exec_prog(UTILITY_LOG_FILE, NULL, true, true,
309 : "\"%s/psql\" " EXEC_PSQL_ARGS " %s -f \"%s\"",
310 : new_cluster.bindir, cluster_conn_opts(&new_cluster),
311 : GLOBALS_DUMP_FILE);
312 2 : check_ok();
313 2 : }
314 :
315 :
316 : static void
317 2 : create_new_objects(void)
318 : {
319 : int dbnum;
320 :
321 2 : prep_status("Restoring database schemas in the new cluster\n");
322 :
323 : /*
324 : * We cannot process the template1 database concurrently with others,
325 : * because when it's transiently dropped, connection attempts would fail.
326 : * So handle it in a separate non-parallelized pass.
327 : */
328 24 : for (dbnum = 0; dbnum < old_cluster.dbarr.ndbs; dbnum++)
329 : {
330 : char sql_file_name[MAXPGPATH],
331 : log_file_name[MAXPGPATH];
332 12 : DbInfo *old_db = &old_cluster.dbarr.dbs[dbnum];
333 : const char *create_opts;
334 :
335 : /* Process only template1 in this pass */
336 12 : if (strcmp(old_db->db_name, "template1") != 0)
337 10 : continue;
338 :
339 2 : pg_log(PG_STATUS, "%s", old_db->db_name);
340 2 : snprintf(sql_file_name, sizeof(sql_file_name), DB_DUMP_FILE_MASK, old_db->db_oid);
341 2 : snprintf(log_file_name, sizeof(log_file_name), DB_DUMP_LOG_FILE_MASK, old_db->db_oid);
342 :
343 : /*
344 : * template1 and postgres databases will already exist in the target
345 : * installation, so tell pg_restore to drop and recreate them;
346 : * otherwise we would fail to propagate their database-level
347 : * properties.
348 : */
349 2 : create_opts = "--clean --create";
350 :
351 2 : exec_prog(log_file_name,
352 : NULL,
353 : true,
354 : true,
355 : "\"%s/pg_restore\" %s %s --exit-on-error --verbose "
356 : "--dbname postgres \"%s\"",
357 : new_cluster.bindir,
358 : cluster_conn_opts(&new_cluster),
359 : create_opts,
360 : sql_file_name);
361 :
362 2 : break; /* done once we've processed template1 */
363 : }
364 :
365 14 : for (dbnum = 0; dbnum < old_cluster.dbarr.ndbs; dbnum++)
366 : {
367 : char sql_file_name[MAXPGPATH],
368 : log_file_name[MAXPGPATH];
369 12 : DbInfo *old_db = &old_cluster.dbarr.dbs[dbnum];
370 : const char *create_opts;
371 :
372 : /* Skip template1 in this pass */
373 12 : if (strcmp(old_db->db_name, "template1") == 0)
374 2 : continue;
375 :
376 10 : pg_log(PG_STATUS, "%s", old_db->db_name);
377 10 : snprintf(sql_file_name, sizeof(sql_file_name), DB_DUMP_FILE_MASK, old_db->db_oid);
378 10 : snprintf(log_file_name, sizeof(log_file_name), DB_DUMP_LOG_FILE_MASK, old_db->db_oid);
379 :
380 : /*
381 : * template1 and postgres databases will already exist in the target
382 : * installation, so tell pg_restore to drop and recreate them;
383 : * otherwise we would fail to propagate their database-level
384 : * properties.
385 : */
386 10 : if (strcmp(old_db->db_name, "postgres") == 0)
387 2 : create_opts = "--clean --create";
388 : else
389 8 : create_opts = "--create";
390 :
391 10 : parallel_exec_prog(log_file_name,
392 : NULL,
393 : "\"%s/pg_restore\" %s %s --exit-on-error --verbose "
394 : "--dbname template1 \"%s\"",
395 : new_cluster.bindir,
396 : cluster_conn_opts(&new_cluster),
397 : create_opts,
398 : sql_file_name);
399 : }
400 :
401 : /* reap all children */
402 2 : while (reap_child(true) == true)
403 : ;
404 :
405 2 : end_progress_output();
406 2 : check_ok();
407 :
408 : /*
409 : * We don't have minmxids for databases or relations in pre-9.3 clusters,
410 : * so set those after we have restored the schema.
411 : */
412 2 : if (GET_MAJOR_VERSION(old_cluster.major_version) < 903)
413 0 : set_frozenxids(true);
414 :
415 : /* update new_cluster info now that we have objects in the databases */
416 2 : get_db_and_rel_infos(&new_cluster);
417 2 : }
418 :
419 : /*
420 : * Delete the given subdirectory contents from the new cluster
421 : */
422 : static void
423 6 : remove_new_subdir(const char *subdir, bool rmtopdir)
424 : {
425 : char new_path[MAXPGPATH];
426 :
427 6 : prep_status("Deleting files from new %s", subdir);
428 :
429 6 : snprintf(new_path, sizeof(new_path), "%s/%s", new_cluster.pgdata, subdir);
430 6 : if (!rmtree(new_path, rmtopdir))
431 0 : pg_fatal("could not delete directory \"%s\"\n", new_path);
432 :
433 6 : check_ok();
434 6 : }
435 :
436 : /*
437 : * Copy the files from the old cluster into it
438 : */
439 : static void
440 6 : copy_subdir_files(const char *old_subdir, const char *new_subdir)
441 : {
442 : char old_path[MAXPGPATH];
443 : char new_path[MAXPGPATH];
444 :
445 6 : remove_new_subdir(new_subdir, true);
446 :
447 6 : snprintf(old_path, sizeof(old_path), "%s/%s", old_cluster.pgdata, old_subdir);
448 6 : snprintf(new_path, sizeof(new_path), "%s/%s", new_cluster.pgdata, new_subdir);
449 :
450 6 : prep_status("Copying old %s to new server", old_subdir);
451 :
452 6 : exec_prog(UTILITY_LOG_FILE, NULL, true, true,
453 : #ifndef WIN32
454 : "cp -Rf \"%s\" \"%s\"",
455 : #else
456 : /* flags: everything, no confirm, quiet, overwrite read-only */
457 : "xcopy /e /y /q /r \"%s\" \"%s\\\"",
458 : #endif
459 : old_path, new_path);
460 :
461 6 : check_ok();
462 6 : }
463 :
464 : static void
465 2 : copy_xact_xlog_xid(void)
466 : {
467 : /*
468 : * Copy old commit logs to new data dir. pg_clog has been renamed to
469 : * pg_xact in post-10 clusters.
470 : */
471 2 : copy_subdir_files(GET_MAJOR_VERSION(old_cluster.major_version) < 1000 ?
472 : "pg_clog" : "pg_xact",
473 2 : GET_MAJOR_VERSION(new_cluster.major_version) < 1000 ?
474 : "pg_clog" : "pg_xact");
475 :
476 : /* set the next transaction id and epoch of the new cluster */
477 2 : prep_status("Setting next transaction ID and epoch for new cluster");
478 2 : exec_prog(UTILITY_LOG_FILE, NULL, true, true,
479 : "\"%s/pg_resetwal\" -f -x %u \"%s\"",
480 : new_cluster.bindir, old_cluster.controldata.chkpnt_nxtxid,
481 : new_cluster.pgdata);
482 2 : exec_prog(UTILITY_LOG_FILE, NULL, true, true,
483 : "\"%s/pg_resetwal\" -f -e %u \"%s\"",
484 : new_cluster.bindir, old_cluster.controldata.chkpnt_nxtepoch,
485 : new_cluster.pgdata);
486 : /* must reset commit timestamp limits also */
487 2 : exec_prog(UTILITY_LOG_FILE, NULL, true, true,
488 : "\"%s/pg_resetwal\" -f -c %u,%u \"%s\"",
489 : new_cluster.bindir,
490 : old_cluster.controldata.chkpnt_nxtxid,
491 : old_cluster.controldata.chkpnt_nxtxid,
492 : new_cluster.pgdata);
493 2 : check_ok();
494 :
495 : /*
496 : * If the old server is before the MULTIXACT_FORMATCHANGE_CAT_VER change
497 : * (see pg_upgrade.h) and the new server is after, then we don't copy
498 : * pg_multixact files, but we need to reset pg_control so that the new
499 : * server doesn't attempt to read multis older than the cutoff value.
500 : */
501 4 : if (old_cluster.controldata.cat_ver >= MULTIXACT_FORMATCHANGE_CAT_VER &&
502 2 : new_cluster.controldata.cat_ver >= MULTIXACT_FORMATCHANGE_CAT_VER)
503 : {
504 2 : copy_subdir_files("pg_multixact/offsets", "pg_multixact/offsets");
505 2 : copy_subdir_files("pg_multixact/members", "pg_multixact/members");
506 :
507 2 : prep_status("Setting next multixact ID and offset for new cluster");
508 :
509 : /*
510 : * we preserve all files and contents, so we must preserve both "next"
511 : * counters here and the oldest multi present on system.
512 : */
513 2 : exec_prog(UTILITY_LOG_FILE, NULL, true, true,
514 : "\"%s/pg_resetwal\" -O %u -m %u,%u \"%s\"",
515 : new_cluster.bindir,
516 : old_cluster.controldata.chkpnt_nxtmxoff,
517 : old_cluster.controldata.chkpnt_nxtmulti,
518 : old_cluster.controldata.chkpnt_oldstMulti,
519 : new_cluster.pgdata);
520 2 : check_ok();
521 : }
522 0 : else if (new_cluster.controldata.cat_ver >= MULTIXACT_FORMATCHANGE_CAT_VER)
523 : {
524 : /*
525 : * Remove offsets/0000 file created by initdb that no longer matches
526 : * the new multi-xid value. "members" starts at zero so no need to
527 : * remove it.
528 : */
529 0 : remove_new_subdir("pg_multixact/offsets", false);
530 :
531 0 : prep_status("Setting oldest multixact ID in new cluster");
532 :
533 : /*
534 : * We don't preserve files in this case, but it's important that the
535 : * oldest multi is set to the latest value used by the old system, so
536 : * that multixact.c returns the empty set for multis that might be
537 : * present on disk. We set next multi to the value following that; it
538 : * might end up wrapped around (i.e. 0) if the old cluster had
539 : * next=MaxMultiXactId, but multixact.c can cope with that just fine.
540 : */
541 0 : exec_prog(UTILITY_LOG_FILE, NULL, true, true,
542 : "\"%s/pg_resetwal\" -m %u,%u \"%s\"",
543 : new_cluster.bindir,
544 0 : old_cluster.controldata.chkpnt_nxtmulti + 1,
545 : old_cluster.controldata.chkpnt_nxtmulti,
546 : new_cluster.pgdata);
547 0 : check_ok();
548 : }
549 :
550 : /* now reset the wal archives in the new cluster */
551 2 : prep_status("Resetting WAL archives");
552 2 : exec_prog(UTILITY_LOG_FILE, NULL, true, true,
553 : /* use timeline 1 to match controldata and no WAL history file */
554 : "\"%s/pg_resetwal\" -l 00000001%s \"%s\"", new_cluster.bindir,
555 : old_cluster.controldata.nextxlogfile + 8,
556 : new_cluster.pgdata);
557 2 : check_ok();
558 2 : }
559 :
560 :
561 : /*
562 : * set_frozenxids()
563 : *
564 : * This is called on the new cluster before we restore anything, with
565 : * minmxid_only = false. Its purpose is to ensure that all initdb-created
566 : * vacuumable tables have relfrozenxid/relminmxid matching the old cluster's
567 : * xid/mxid counters. We also initialize the datfrozenxid/datminmxid of the
568 : * built-in databases to match.
569 : *
570 : * As we create user tables later, their relfrozenxid/relminmxid fields will
571 : * be restored properly by the binary-upgrade restore script. Likewise for
572 : * user-database datfrozenxid/datminmxid. However, if we're upgrading from a
573 : * pre-9.3 database, which does not store per-table or per-DB minmxid, then
574 : * the relminmxid/datminmxid values filled in by the restore script will just
575 : * be zeroes.
576 : *
577 : * Hence, with a pre-9.3 source database, a second call occurs after
578 : * everything is restored, with minmxid_only = true. This pass will
579 : * initialize all tables and databases, both those made by initdb and user
580 : * objects, with the desired minmxid value. frozenxid values are left alone.
581 : */
582 : static void
583 2 : set_frozenxids(bool minmxid_only)
584 : {
585 : int dbnum;
586 : PGconn *conn,
587 : *conn_template1;
588 : PGresult *dbres;
589 : int ntups;
590 : int i_datname;
591 : int i_datallowconn;
592 :
593 2 : if (!minmxid_only)
594 2 : prep_status("Setting frozenxid and minmxid counters in new cluster");
595 : else
596 0 : prep_status("Setting minmxid counter in new cluster");
597 :
598 2 : conn_template1 = connectToServer(&new_cluster, "template1");
599 :
600 2 : if (!minmxid_only)
601 : /* set pg_database.datfrozenxid */
602 2 : PQclear(executeQueryOrDie(conn_template1,
603 : "UPDATE pg_catalog.pg_database "
604 : "SET datfrozenxid = '%u'",
605 : old_cluster.controldata.chkpnt_nxtxid));
606 :
607 : /* set pg_database.datminmxid */
608 2 : PQclear(executeQueryOrDie(conn_template1,
609 : "UPDATE pg_catalog.pg_database "
610 : "SET datminmxid = '%u'",
611 : old_cluster.controldata.chkpnt_nxtmulti));
612 :
613 : /* get database names */
614 2 : dbres = executeQueryOrDie(conn_template1,
615 : "SELECT datname, datallowconn "
616 : "FROM pg_catalog.pg_database");
617 :
618 2 : i_datname = PQfnumber(dbres, "datname");
619 2 : i_datallowconn = PQfnumber(dbres, "datallowconn");
620 :
621 2 : ntups = PQntuples(dbres);
622 8 : for (dbnum = 0; dbnum < ntups; dbnum++)
623 : {
624 6 : char *datname = PQgetvalue(dbres, dbnum, i_datname);
625 6 : char *datallowconn = PQgetvalue(dbres, dbnum, i_datallowconn);
626 :
627 : /*
628 : * We must update databases where datallowconn = false, e.g.
629 : * template0, because autovacuum increments their datfrozenxids,
630 : * relfrozenxids, and relminmxid even if autovacuum is turned off, and
631 : * even though all the data rows are already frozen. To enable this,
632 : * we temporarily change datallowconn.
633 : */
634 6 : if (strcmp(datallowconn, "f") == 0)
635 2 : PQclear(executeQueryOrDie(conn_template1,
636 : "ALTER DATABASE %s ALLOW_CONNECTIONS = true",
637 : quote_identifier(datname)));
638 :
639 6 : conn = connectToServer(&new_cluster, datname);
640 :
641 6 : if (!minmxid_only)
642 : /* set pg_class.relfrozenxid */
643 6 : PQclear(executeQueryOrDie(conn,
644 : "UPDATE pg_catalog.pg_class "
645 : "SET relfrozenxid = '%u' "
646 : /* only heap, materialized view, and TOAST are vacuumed */
647 : "WHERE relkind IN ("
648 : CppAsString2(RELKIND_RELATION) ", "
649 : CppAsString2(RELKIND_MATVIEW) ", "
650 : CppAsString2(RELKIND_TOASTVALUE) ")",
651 : old_cluster.controldata.chkpnt_nxtxid));
652 :
653 : /* set pg_class.relminmxid */
654 6 : PQclear(executeQueryOrDie(conn,
655 : "UPDATE pg_catalog.pg_class "
656 : "SET relminmxid = '%u' "
657 : /* only heap, materialized view, and TOAST are vacuumed */
658 : "WHERE relkind IN ("
659 : CppAsString2(RELKIND_RELATION) ", "
660 : CppAsString2(RELKIND_MATVIEW) ", "
661 : CppAsString2(RELKIND_TOASTVALUE) ")",
662 : old_cluster.controldata.chkpnt_nxtmulti));
663 6 : PQfinish(conn);
664 :
665 : /* Reset datallowconn flag */
666 6 : if (strcmp(datallowconn, "f") == 0)
667 2 : PQclear(executeQueryOrDie(conn_template1,
668 : "ALTER DATABASE %s ALLOW_CONNECTIONS = false",
669 : quote_identifier(datname)));
670 : }
671 :
672 2 : PQclear(dbres);
673 :
674 2 : PQfinish(conn_template1);
675 :
676 2 : check_ok();
677 2 : }
678 :
679 :
680 : static void
681 2 : cleanup(void)
682 : {
683 2 : fclose(log_opts.internal);
684 :
685 : /* Remove dump and log files? */
686 2 : if (!log_opts.retain)
687 : {
688 : int dbnum;
689 : char **filename;
690 :
691 8 : for (filename = output_files; *filename != NULL; filename++)
692 6 : unlink(*filename);
693 :
694 : /* remove dump files */
695 2 : unlink(GLOBALS_DUMP_FILE);
696 :
697 2 : if (old_cluster.dbarr.dbs)
698 14 : for (dbnum = 0; dbnum < old_cluster.dbarr.ndbs; dbnum++)
699 : {
700 : char sql_file_name[MAXPGPATH],
701 : log_file_name[MAXPGPATH];
702 12 : DbInfo *old_db = &old_cluster.dbarr.dbs[dbnum];
703 :
704 12 : snprintf(sql_file_name, sizeof(sql_file_name), DB_DUMP_FILE_MASK, old_db->db_oid);
705 12 : unlink(sql_file_name);
706 :
707 12 : snprintf(log_file_name, sizeof(log_file_name), DB_DUMP_LOG_FILE_MASK, old_db->db_oid);
708 12 : unlink(log_file_name);
709 : }
710 : }
711 2 : }
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