LCOV - code coverage report
Current view: top level - src/bin/pg_upgrade - pg_upgrade.c (source / functions) Hit Total Coverage
Test: PostgreSQL 19devel Lines: 274 321 85.4 %
Date: 2025-07-29 04:18:44 Functions: 14 14 100.0 %
Legend: Lines: hit not hit

          Line data    Source code
       1             : /*
       2             :  *  pg_upgrade.c
       3             :  *
       4             :  *  main source file
       5             :  *
       6             :  *  Copyright (c) 2010-2025, 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             :  *  We control all assignments of pg_database.oid because we want the directory
      37             :  *  names to match between the old and new cluster.
      38             :  */
      39             : 
      40             : 
      41             : 
      42             : #include "postgres_fe.h"
      43             : 
      44             : #include <time.h>
      45             : 
      46             : #include "catalog/pg_class_d.h"
      47             : #include "common/file_perm.h"
      48             : #include "common/logging.h"
      49             : #include "common/restricted_token.h"
      50             : #include "fe_utils/string_utils.h"
      51             : #include "pg_upgrade.h"
      52             : 
      53             : /*
      54             :  * Maximum number of pg_restore actions (TOC entries) to process within one
      55             :  * transaction.  At some point we might want to make this user-controllable,
      56             :  * but for now a hard-wired setting will suffice.
      57             :  */
      58             : #define RESTORE_TRANSACTION_SIZE 1000
      59             : 
      60             : static void set_new_cluster_char_signedness(void);
      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);
      69             : static void create_logical_replication_slots(void);
      70             : static void create_conflict_detection_slot(void);
      71             : 
      72             : ClusterInfo old_cluster,
      73             :             new_cluster;
      74             : OSInfo      os_info;
      75             : 
      76             : char       *output_files[] = {
      77             :     SERVER_LOG_FILE,
      78             : #ifdef WIN32
      79             :     /* unique file for pg_ctl start */
      80             :     SERVER_START_LOG_FILE,
      81             : #endif
      82             :     UTILITY_LOG_FILE,
      83             :     INTERNAL_LOG_FILE,
      84             :     NULL
      85             : };
      86             : 
      87             : 
      88             : int
      89          42 : main(int argc, char **argv)
      90             : {
      91          42 :     char       *deletion_script_file_name = NULL;
      92             :     bool        migrate_logical_slots;
      93             : 
      94             :     /*
      95             :      * pg_upgrade doesn't currently use common/logging.c, but initialize it
      96             :      * anyway because we might call common code that does.
      97             :      */
      98          42 :     pg_logging_init(argv[0]);
      99          42 :     set_pglocale_pgservice(argv[0], PG_TEXTDOMAIN("pg_upgrade"));
     100             : 
     101             :     /* Set default restrictive mask until new cluster permissions are read */
     102          42 :     umask(PG_MODE_MASK_OWNER);
     103             : 
     104          42 :     parseCommandLine(argc, argv);
     105             : 
     106          36 :     get_restricted_token();
     107             : 
     108          36 :     adjust_data_dir(&old_cluster);
     109          36 :     adjust_data_dir(&new_cluster);
     110             : 
     111             :     /*
     112             :      * Set mask based on PGDATA permissions, needed for the creation of the
     113             :      * output directories with correct permissions.
     114             :      */
     115          36 :     if (!GetDataDirectoryCreatePerm(new_cluster.pgdata))
     116           0 :         pg_fatal("could not read permissions of directory \"%s\": %m",
     117             :                  new_cluster.pgdata);
     118             : 
     119          36 :     umask(pg_mode_mask);
     120             : 
     121             :     /*
     122             :      * This needs to happen after adjusting the data directory of the new
     123             :      * cluster in adjust_data_dir().
     124             :      */
     125          36 :     make_outputdirs(new_cluster.pgdata);
     126             : 
     127          36 :     setup(argv[0]);
     128             : 
     129          34 :     output_check_banner();
     130             : 
     131          34 :     check_cluster_versions();
     132             : 
     133          32 :     get_sock_dir(&old_cluster);
     134          32 :     get_sock_dir(&new_cluster);
     135             : 
     136          32 :     check_cluster_compatibility();
     137             : 
     138          32 :     check_and_dump_old_cluster();
     139             : 
     140             : 
     141             :     /* -- NEW -- */
     142          26 :     start_postmaster(&new_cluster, true);
     143             : 
     144          26 :     check_new_cluster();
     145          18 :     report_clusters_compatible();
     146             : 
     147          16 :     pg_log(PG_REPORT,
     148             :            "\n"
     149             :            "Performing Upgrade\n"
     150             :            "------------------");
     151             : 
     152          16 :     set_locale_and_encoding();
     153             : 
     154          16 :     prepare_new_cluster();
     155             : 
     156          16 :     stop_postmaster(false);
     157             : 
     158             :     /*
     159             :      * Destructive Changes to New Cluster
     160             :      */
     161             : 
     162          16 :     copy_xact_xlog_xid();
     163          16 :     set_new_cluster_char_signedness();
     164             : 
     165             :     /* New now using xids of the old system */
     166             : 
     167             :     /* -- NEW -- */
     168          16 :     start_postmaster(&new_cluster, true);
     169             : 
     170          16 :     prepare_new_globals();
     171             : 
     172          16 :     create_new_objects();
     173             : 
     174          16 :     stop_postmaster(false);
     175             : 
     176             :     /*
     177             :      * Most failures happen in create_new_objects(), which has completed at
     178             :      * this point.  We do this here because it is just before file transfer,
     179             :      * which for --link will make it unsafe to start the old cluster once the
     180             :      * new cluster is started, and for --swap will make it unsafe to start the
     181             :      * old cluster at all.
     182             :      */
     183          16 :     if (user_opts.transfer_mode == TRANSFER_MODE_LINK ||
     184          14 :         user_opts.transfer_mode == TRANSFER_MODE_SWAP)
     185           4 :         disable_old_cluster(user_opts.transfer_mode);
     186             : 
     187          16 :     transfer_all_new_tablespaces(&old_cluster.dbarr, &new_cluster.dbarr,
     188             :                                  old_cluster.pgdata, new_cluster.pgdata);
     189             : 
     190             :     /*
     191             :      * Assuming OIDs are only used in system tables, there is no need to
     192             :      * restore the OID counter because we have not transferred any OIDs from
     193             :      * the old system, but we do it anyway just in case.  We do it late here
     194             :      * because there is no need to have the schema load use new oids.
     195             :      */
     196          16 :     prep_status("Setting next OID for new cluster");
     197          16 :     exec_prog(UTILITY_LOG_FILE, NULL, true, true,
     198             :               "\"%s/pg_resetwal\" -o %u \"%s\"",
     199             :               new_cluster.bindir, old_cluster.controldata.chkpnt_nxtoid,
     200             :               new_cluster.pgdata);
     201          16 :     check_ok();
     202             : 
     203          16 :     migrate_logical_slots = count_old_cluster_logical_slots();
     204             : 
     205             :     /*
     206             :      * Migrate replication slots to the new cluster.
     207             :      *
     208             :      * Note that we must migrate logical slots after resetting WAL because
     209             :      * otherwise the required WAL would be removed and slots would become
     210             :      * unusable.  There is a possibility that background processes might
     211             :      * generate some WAL before we could create the slots in the new cluster
     212             :      * but we can ignore that WAL as that won't be required downstream.
     213             :      *
     214             :      * The conflict detection slot is not affected by concerns related to WALs
     215             :      * as it only retains the dead tuples. It is created here for consistency.
     216             :      * Note that the new conflict detection slot uses the latest transaction
     217             :      * ID as xmin, so it cannot protect dead tuples that existed before the
     218             :      * upgrade. Additionally, commit timestamps and origin data are not
     219             :      * preserved during the upgrade. So, even after creating the slot, the
     220             :      * upgraded subscriber may be unable to detect conflicts or log relevant
     221             :      * commit timestamps and origins when applying changes from the publisher
     222             :      * occurred before the upgrade especially if those changes were not
     223             :      * replicated. It can only protect tuples that might be deleted after the
     224             :      * new cluster starts.
     225             :      */
     226          16 :     if (migrate_logical_slots || old_cluster.sub_retain_dead_tuples)
     227             :     {
     228           4 :         start_postmaster(&new_cluster, true);
     229             : 
     230           4 :         if (migrate_logical_slots)
     231           2 :             create_logical_replication_slots();
     232             : 
     233           4 :         if (old_cluster.sub_retain_dead_tuples)
     234           2 :             create_conflict_detection_slot();
     235             : 
     236           4 :         stop_postmaster(false);
     237             :     }
     238             : 
     239          16 :     if (user_opts.do_sync)
     240             :     {
     241           0 :         prep_status("Sync data directory to disk");
     242           0 :         exec_prog(UTILITY_LOG_FILE, NULL, true, true,
     243             :                   "\"%s/initdb\" --sync-only %s \"%s\" --sync-method %s",
     244             :                   new_cluster.bindir,
     245           0 :                   (user_opts.transfer_mode == TRANSFER_MODE_SWAP) ?
     246             :                   "--no-sync-data-files" : "",
     247             :                   new_cluster.pgdata,
     248             :                   user_opts.sync_method);
     249           0 :         check_ok();
     250             :     }
     251             : 
     252          16 :     create_script_for_old_cluster_deletion(&deletion_script_file_name);
     253             : 
     254          16 :     issue_warnings_and_set_wal_level();
     255             : 
     256          16 :     pg_log(PG_REPORT,
     257             :            "\n"
     258             :            "Upgrade Complete\n"
     259             :            "----------------");
     260             : 
     261          16 :     output_completion_banner(deletion_script_file_name);
     262             : 
     263          16 :     pg_free(deletion_script_file_name);
     264             : 
     265          16 :     cleanup_output_dirs();
     266             : 
     267          16 :     return 0;
     268             : }
     269             : 
     270             : /*
     271             :  * Create and assign proper permissions to the set of output directories
     272             :  * used to store any data generated internally, filling in log_opts in
     273             :  * the process.
     274             :  */
     275             : static void
     276          36 : make_outputdirs(char *pgdata)
     277             : {
     278             :     FILE       *fp;
     279             :     char      **filename;
     280          36 :     time_t      run_time = time(NULL);
     281             :     char        filename_path[MAXPGPATH];
     282             :     char        timebuf[128];
     283             :     struct timeval time;
     284             :     time_t      tt;
     285             :     int         len;
     286             : 
     287          36 :     log_opts.rootdir = (char *) pg_malloc0(MAXPGPATH);
     288          36 :     len = snprintf(log_opts.rootdir, MAXPGPATH, "%s/%s", pgdata, BASE_OUTPUTDIR);
     289          36 :     if (len >= MAXPGPATH)
     290           0 :         pg_fatal("directory path for new cluster is too long");
     291             : 
     292             :     /* BASE_OUTPUTDIR/$timestamp/ */
     293          36 :     gettimeofday(&time, NULL);
     294          36 :     tt = (time_t) time.tv_sec;
     295          36 :     strftime(timebuf, sizeof(timebuf), "%Y%m%dT%H%M%S", localtime(&tt));
     296             :     /* append milliseconds */
     297          36 :     snprintf(timebuf + strlen(timebuf), sizeof(timebuf) - strlen(timebuf),
     298          36 :              ".%03d", (int) (time.tv_usec / 1000));
     299          36 :     log_opts.basedir = (char *) pg_malloc0(MAXPGPATH);
     300          36 :     len = snprintf(log_opts.basedir, MAXPGPATH, "%s/%s", log_opts.rootdir,
     301             :                    timebuf);
     302          36 :     if (len >= MAXPGPATH)
     303           0 :         pg_fatal("directory path for new cluster is too long");
     304             : 
     305             :     /* BASE_OUTPUTDIR/$timestamp/dump/ */
     306          36 :     log_opts.dumpdir = (char *) pg_malloc0(MAXPGPATH);
     307          36 :     len = snprintf(log_opts.dumpdir, MAXPGPATH, "%s/%s/%s", log_opts.rootdir,
     308             :                    timebuf, DUMP_OUTPUTDIR);
     309          36 :     if (len >= MAXPGPATH)
     310           0 :         pg_fatal("directory path for new cluster is too long");
     311             : 
     312             :     /* BASE_OUTPUTDIR/$timestamp/log/ */
     313          36 :     log_opts.logdir = (char *) pg_malloc0(MAXPGPATH);
     314          36 :     len = snprintf(log_opts.logdir, MAXPGPATH, "%s/%s/%s", log_opts.rootdir,
     315             :                    timebuf, LOG_OUTPUTDIR);
     316          36 :     if (len >= MAXPGPATH)
     317           0 :         pg_fatal("directory path for new cluster is too long");
     318             : 
     319             :     /*
     320             :      * Ignore the error case where the root path exists, as it is kept the
     321             :      * same across runs.
     322             :      */
     323          36 :     if (mkdir(log_opts.rootdir, pg_dir_create_mode) < 0 && errno != EEXIST)
     324           0 :         pg_fatal("could not create directory \"%s\": %m", log_opts.rootdir);
     325          36 :     if (mkdir(log_opts.basedir, pg_dir_create_mode) < 0)
     326           0 :         pg_fatal("could not create directory \"%s\": %m", log_opts.basedir);
     327          36 :     if (mkdir(log_opts.dumpdir, pg_dir_create_mode) < 0)
     328           0 :         pg_fatal("could not create directory \"%s\": %m", log_opts.dumpdir);
     329          36 :     if (mkdir(log_opts.logdir, pg_dir_create_mode) < 0)
     330           0 :         pg_fatal("could not create directory \"%s\": %m", log_opts.logdir);
     331             : 
     332          36 :     len = snprintf(filename_path, sizeof(filename_path), "%s/%s",
     333             :                    log_opts.logdir, INTERNAL_LOG_FILE);
     334          36 :     if (len >= sizeof(filename_path))
     335           0 :         pg_fatal("directory path for new cluster is too long");
     336             : 
     337          36 :     if ((log_opts.internal = fopen_priv(filename_path, "a")) == NULL)
     338           0 :         pg_fatal("could not open log file \"%s\": %m", filename_path);
     339             : 
     340             :     /* label start of upgrade in logfiles */
     341         144 :     for (filename = output_files; *filename != NULL; filename++)
     342             :     {
     343         108 :         len = snprintf(filename_path, sizeof(filename_path), "%s/%s",
     344             :                        log_opts.logdir, *filename);
     345         108 :         if (len >= sizeof(filename_path))
     346           0 :             pg_fatal("directory path for new cluster is too long");
     347         108 :         if ((fp = fopen_priv(filename_path, "a")) == NULL)
     348           0 :             pg_fatal("could not write to log file \"%s\": %m", filename_path);
     349             : 
     350         108 :         fprintf(fp,
     351             :                 "-----------------------------------------------------------------\n"
     352             :                 "  pg_upgrade run on %s"
     353             :                 "-----------------------------------------------------------------\n\n",
     354             :                 ctime(&run_time));
     355         108 :         fclose(fp);
     356             :     }
     357          36 : }
     358             : 
     359             : 
     360             : static void
     361          36 : setup(char *argv0)
     362             : {
     363             :     /*
     364             :      * make sure the user has a clean environment, otherwise, we may confuse
     365             :      * libpq when we connect to one (or both) of the servers.
     366             :      */
     367          36 :     check_pghost_envvar();
     368             : 
     369             :     /*
     370             :      * In case the user hasn't specified the directory for the new binaries
     371             :      * with -B, default to using the path of the currently executed pg_upgrade
     372             :      * binary.
     373             :      */
     374          36 :     if (!new_cluster.bindir)
     375             :     {
     376             :         char        exec_path[MAXPGPATH];
     377             : 
     378           0 :         if (find_my_exec(argv0, exec_path) < 0)
     379           0 :             pg_fatal("%s: could not find own program executable", argv0);
     380             :         /* Trim off program name and keep just path */
     381           0 :         *last_dir_separator(exec_path) = '\0';
     382           0 :         canonicalize_path(exec_path);
     383           0 :         new_cluster.bindir = pg_strdup(exec_path);
     384             :     }
     385             : 
     386          36 :     verify_directories();
     387             : 
     388             :     /* no postmasters should be running, except for a live check */
     389          34 :     if (pid_lock_file_exists(old_cluster.pgdata))
     390             :     {
     391             :         /*
     392             :          * If we have a postmaster.pid file, try to start the server.  If it
     393             :          * starts, the pid file was stale, so stop the server.  If it doesn't
     394             :          * start, assume the server is running.  If the pid file is left over
     395             :          * from a server crash, this also allows any committed transactions
     396             :          * stored in the WAL to be replayed so they are not lost, because WAL
     397             :          * files are not transferred from old to new servers.  We later check
     398             :          * for a clean shutdown.
     399             :          */
     400           0 :         if (start_postmaster(&old_cluster, false))
     401           0 :             stop_postmaster(false);
     402             :         else
     403             :         {
     404           0 :             if (!user_opts.check)
     405           0 :                 pg_fatal("There seems to be a postmaster servicing the old cluster.\n"
     406             :                          "Please shutdown that postmaster and try again.");
     407             :             else
     408           0 :                 user_opts.live_check = true;
     409             :         }
     410             :     }
     411             : 
     412             :     /* same goes for the new postmaster */
     413          34 :     if (pid_lock_file_exists(new_cluster.pgdata))
     414             :     {
     415           0 :         if (start_postmaster(&new_cluster, false))
     416           0 :             stop_postmaster(false);
     417             :         else
     418           0 :             pg_fatal("There seems to be a postmaster servicing the new cluster.\n"
     419             :                      "Please shutdown that postmaster and try again.");
     420             :     }
     421          34 : }
     422             : 
     423             : /*
     424             :  * Set the new cluster's default char signedness using the old cluster's
     425             :  * value.
     426             :  */
     427             : static void
     428          16 : set_new_cluster_char_signedness(void)
     429             : {
     430             :     bool        new_char_signedness;
     431             : 
     432             :     /*
     433             :      * Use the specified char signedness if specified. Otherwise we inherit
     434             :      * the source database's signedness.
     435             :      */
     436          16 :     if (user_opts.char_signedness != -1)
     437           0 :         new_char_signedness = (user_opts.char_signedness == 1);
     438             :     else
     439          16 :         new_char_signedness = old_cluster.controldata.default_char_signedness;
     440             : 
     441             :     /* Change the char signedness of the new cluster, if necessary */
     442          16 :     if (new_cluster.controldata.default_char_signedness != new_char_signedness)
     443             :     {
     444           2 :         prep_status("Setting the default char signedness for new cluster");
     445             : 
     446           2 :         exec_prog(UTILITY_LOG_FILE, NULL, true, true,
     447             :                   "\"%s/pg_resetwal\" --char-signedness %s \"%s\"",
     448             :                   new_cluster.bindir,
     449             :                   new_char_signedness ? "signed" : "unsigned",
     450             :                   new_cluster.pgdata);
     451             : 
     452           2 :         check_ok();
     453             :     }
     454          16 : }
     455             : 
     456             : /*
     457             :  * Copy locale and encoding information into the new cluster's template0.
     458             :  *
     459             :  * We need to copy the encoding, datlocprovider, datcollate, datctype, and
     460             :  * datlocale. We don't need datcollversion because that's never set for
     461             :  * template0.
     462             :  */
     463             : static void
     464          16 : set_locale_and_encoding(void)
     465             : {
     466             :     PGconn     *conn_new_template1;
     467             :     char       *datcollate_literal;
     468             :     char       *datctype_literal;
     469          16 :     char       *datlocale_literal = NULL;
     470          16 :     DbLocaleInfo *locale = old_cluster.template0;
     471             : 
     472          16 :     prep_status("Setting locale and encoding for new cluster");
     473             : 
     474             :     /* escape literals with respect to new cluster */
     475          16 :     conn_new_template1 = connectToServer(&new_cluster, "template1");
     476             : 
     477          16 :     datcollate_literal = PQescapeLiteral(conn_new_template1,
     478          16 :                                          locale->db_collate,
     479          16 :                                          strlen(locale->db_collate));
     480          16 :     datctype_literal = PQescapeLiteral(conn_new_template1,
     481          16 :                                        locale->db_ctype,
     482          16 :                                        strlen(locale->db_ctype));
     483             : 
     484          16 :     if (locale->db_locale)
     485           2 :         datlocale_literal = PQescapeLiteral(conn_new_template1,
     486           2 :                                             locale->db_locale,
     487           2 :                                             strlen(locale->db_locale));
     488             :     else
     489          14 :         datlocale_literal = "NULL";
     490             : 
     491             :     /* update template0 in new cluster */
     492          16 :     if (GET_MAJOR_VERSION(new_cluster.major_version) >= 1700)
     493          16 :         PQclear(executeQueryOrDie(conn_new_template1,
     494             :                                   "UPDATE pg_catalog.pg_database "
     495             :                                   "  SET encoding = %d, "
     496             :                                   "      datlocprovider = '%c', "
     497             :                                   "      datcollate = %s, "
     498             :                                   "      datctype = %s, "
     499             :                                   "      datlocale = %s "
     500             :                                   "  WHERE datname = 'template0' ",
     501             :                                   locale->db_encoding,
     502          16 :                                   locale->db_collprovider,
     503             :                                   datcollate_literal,
     504             :                                   datctype_literal,
     505             :                                   datlocale_literal));
     506           0 :     else if (GET_MAJOR_VERSION(new_cluster.major_version) >= 1500)
     507           0 :         PQclear(executeQueryOrDie(conn_new_template1,
     508             :                                   "UPDATE pg_catalog.pg_database "
     509             :                                   "  SET encoding = %d, "
     510             :                                   "      datlocprovider = '%c', "
     511             :                                   "      datcollate = %s, "
     512             :                                   "      datctype = %s, "
     513             :                                   "      daticulocale = %s "
     514             :                                   "  WHERE datname = 'template0' ",
     515             :                                   locale->db_encoding,
     516           0 :                                   locale->db_collprovider,
     517             :                                   datcollate_literal,
     518             :                                   datctype_literal,
     519             :                                   datlocale_literal));
     520             :     else
     521           0 :         PQclear(executeQueryOrDie(conn_new_template1,
     522             :                                   "UPDATE pg_catalog.pg_database "
     523             :                                   "  SET encoding = %d, "
     524             :                                   "      datcollate = %s, "
     525             :                                   "      datctype = %s "
     526             :                                   "  WHERE datname = 'template0' ",
     527             :                                   locale->db_encoding,
     528             :                                   datcollate_literal,
     529             :                                   datctype_literal));
     530             : 
     531          16 :     PQfreemem(datcollate_literal);
     532          16 :     PQfreemem(datctype_literal);
     533          16 :     if (locale->db_locale)
     534           2 :         PQfreemem(datlocale_literal);
     535             : 
     536          16 :     PQfinish(conn_new_template1);
     537             : 
     538          16 :     check_ok();
     539          16 : }
     540             : 
     541             : 
     542             : static void
     543          16 : prepare_new_cluster(void)
     544             : {
     545             :     /*
     546             :      * It would make more sense to freeze after loading the schema, but that
     547             :      * would cause us to lose the frozenxids restored by the load. We use
     548             :      * --analyze so autovacuum doesn't update statistics later
     549             :      */
     550          16 :     prep_status("Analyzing all rows in the new cluster");
     551          16 :     exec_prog(UTILITY_LOG_FILE, NULL, true, true,
     552             :               "\"%s/vacuumdb\" %s --all --analyze %s",
     553             :               new_cluster.bindir, cluster_conn_opts(&new_cluster),
     554          16 :               log_opts.verbose ? "--verbose" : "");
     555          16 :     check_ok();
     556             : 
     557             :     /*
     558             :      * We do freeze after analyze so pg_statistic is also frozen. template0 is
     559             :      * not frozen here, but data rows were frozen by initdb, and we set its
     560             :      * datfrozenxid, relfrozenxids, and relminmxid later to match the new xid
     561             :      * counter later.
     562             :      */
     563          16 :     prep_status("Freezing all rows in the new cluster");
     564          16 :     exec_prog(UTILITY_LOG_FILE, NULL, true, true,
     565             :               "\"%s/vacuumdb\" %s --all --freeze %s",
     566             :               new_cluster.bindir, cluster_conn_opts(&new_cluster),
     567          16 :               log_opts.verbose ? "--verbose" : "");
     568          16 :     check_ok();
     569          16 : }
     570             : 
     571             : 
     572             : static void
     573          16 : prepare_new_globals(void)
     574             : {
     575             :     /*
     576             :      * Before we restore anything, set frozenxids of initdb-created tables.
     577             :      */
     578          16 :     set_frozenxids(false);
     579             : 
     580             :     /*
     581             :      * Now restore global objects (roles and tablespaces).
     582             :      */
     583          16 :     prep_status("Restoring global objects in the new cluster");
     584             : 
     585          16 :     exec_prog(UTILITY_LOG_FILE, NULL, true, true,
     586             :               "\"%s/psql\" " EXEC_PSQL_ARGS " %s -f \"%s/%s\"",
     587             :               new_cluster.bindir, cluster_conn_opts(&new_cluster),
     588             :               log_opts.dumpdir,
     589             :               GLOBALS_DUMP_FILE);
     590          16 :     check_ok();
     591          16 : }
     592             : 
     593             : 
     594             : static void
     595          16 : create_new_objects(void)
     596             : {
     597             :     int         dbnum;
     598             :     PGconn     *conn_new_template1;
     599             : 
     600          16 :     prep_status_progress("Restoring database schemas in the new cluster");
     601             : 
     602             :     /*
     603             :      * Ensure that any changes to template0 are fully written out to disk
     604             :      * prior to restoring the databases.  This is necessary because we use the
     605             :      * FILE_COPY strategy to create the databases (which testing has shown to
     606             :      * be faster), and when the server is in binary upgrade mode, it skips the
     607             :      * checkpoints this strategy ordinarily performs.
     608             :      */
     609          16 :     conn_new_template1 = connectToServer(&new_cluster, "template1");
     610          16 :     PQclear(executeQueryOrDie(conn_new_template1, "CHECKPOINT"));
     611          16 :     PQfinish(conn_new_template1);
     612             : 
     613             :     /*
     614             :      * We cannot process the template1 database concurrently with others,
     615             :      * because when it's transiently dropped, connection attempts would fail.
     616             :      * So handle it in a separate non-parallelized pass.
     617             :      */
     618          16 :     for (dbnum = 0; dbnum < old_cluster.dbarr.ndbs; dbnum++)
     619             :     {
     620             :         char        sql_file_name[MAXPGPATH],
     621             :                     log_file_name[MAXPGPATH];
     622          16 :         DbInfo     *old_db = &old_cluster.dbarr.dbs[dbnum];
     623             :         const char *create_opts;
     624             : 
     625             :         /* Process only template1 in this pass */
     626          16 :         if (strcmp(old_db->db_name, "template1") != 0)
     627           0 :             continue;
     628             : 
     629          16 :         pg_log(PG_STATUS, "%s", old_db->db_name);
     630          16 :         snprintf(sql_file_name, sizeof(sql_file_name), DB_DUMP_FILE_MASK, old_db->db_oid);
     631          16 :         snprintf(log_file_name, sizeof(log_file_name), DB_DUMP_LOG_FILE_MASK, old_db->db_oid);
     632             : 
     633             :         /*
     634             :          * template1 database will already exist in the target installation,
     635             :          * so tell pg_restore to drop and recreate it; otherwise we would fail
     636             :          * to propagate its database-level properties.
     637             :          */
     638          16 :         create_opts = "--clean --create";
     639             : 
     640          16 :         exec_prog(log_file_name,
     641             :                   NULL,
     642             :                   true,
     643             :                   true,
     644             :                   "\"%s/pg_restore\" %s %s --exit-on-error --verbose "
     645             :                   "--transaction-size=%d "
     646             :                   "--dbname postgres \"%s/%s\"",
     647             :                   new_cluster.bindir,
     648             :                   cluster_conn_opts(&new_cluster),
     649             :                   create_opts,
     650             :                   RESTORE_TRANSACTION_SIZE,
     651             :                   log_opts.dumpdir,
     652             :                   sql_file_name);
     653             : 
     654          16 :         break;                  /* done once we've processed template1 */
     655             :     }
     656             : 
     657          64 :     for (dbnum = 0; dbnum < old_cluster.dbarr.ndbs; dbnum++)
     658             :     {
     659             :         char        sql_file_name[MAXPGPATH],
     660             :                     log_file_name[MAXPGPATH];
     661          48 :         DbInfo     *old_db = &old_cluster.dbarr.dbs[dbnum];
     662             :         const char *create_opts;
     663             :         int         txn_size;
     664             : 
     665             :         /* Skip template1 in this pass */
     666          48 :         if (strcmp(old_db->db_name, "template1") == 0)
     667          16 :             continue;
     668             : 
     669          32 :         pg_log(PG_STATUS, "%s", old_db->db_name);
     670          32 :         snprintf(sql_file_name, sizeof(sql_file_name), DB_DUMP_FILE_MASK, old_db->db_oid);
     671          32 :         snprintf(log_file_name, sizeof(log_file_name), DB_DUMP_LOG_FILE_MASK, old_db->db_oid);
     672             : 
     673             :         /*
     674             :          * postgres database will already exist in the target installation, so
     675             :          * tell pg_restore to drop and recreate it; otherwise we would fail to
     676             :          * propagate its database-level properties.
     677             :          */
     678          32 :         if (strcmp(old_db->db_name, "postgres") == 0)
     679          16 :             create_opts = "--clean --create";
     680             :         else
     681          16 :             create_opts = "--create";
     682             : 
     683             :         /*
     684             :          * In parallel mode, reduce the --transaction-size of each restore job
     685             :          * so that the total number of locks that could be held across all the
     686             :          * jobs stays in bounds.
     687             :          */
     688          32 :         txn_size = RESTORE_TRANSACTION_SIZE;
     689          32 :         if (user_opts.jobs > 1)
     690             :         {
     691           0 :             txn_size /= user_opts.jobs;
     692             :             /* Keep some sanity if -j is huge */
     693           0 :             txn_size = Max(txn_size, 10);
     694             :         }
     695             : 
     696          32 :         parallel_exec_prog(log_file_name,
     697             :                            NULL,
     698             :                            "\"%s/pg_restore\" %s %s --exit-on-error --verbose "
     699             :                            "--transaction-size=%d "
     700             :                            "--dbname template1 \"%s/%s\"",
     701             :                            new_cluster.bindir,
     702             :                            cluster_conn_opts(&new_cluster),
     703             :                            create_opts,
     704             :                            txn_size,
     705             :                            log_opts.dumpdir,
     706             :                            sql_file_name);
     707             :     }
     708             : 
     709             :     /* reap all children */
     710          16 :     while (reap_child(true) == true)
     711             :         ;
     712             : 
     713          16 :     end_progress_output();
     714          16 :     check_ok();
     715             : 
     716             :     /*
     717             :      * We don't have minmxids for databases or relations in pre-9.3 clusters,
     718             :      * so set those after we have restored the schema.
     719             :      */
     720          16 :     if (GET_MAJOR_VERSION(old_cluster.major_version) <= 902)
     721           0 :         set_frozenxids(true);
     722             : 
     723             :     /* update new_cluster info now that we have objects in the databases */
     724          16 :     get_db_rel_and_slot_infos(&new_cluster);
     725          16 : }
     726             : 
     727             : /*
     728             :  * Delete the given subdirectory contents from the new cluster
     729             :  */
     730             : static void
     731          48 : remove_new_subdir(const char *subdir, bool rmtopdir)
     732             : {
     733             :     char        new_path[MAXPGPATH];
     734             : 
     735          48 :     prep_status("Deleting files from new %s", subdir);
     736             : 
     737          48 :     snprintf(new_path, sizeof(new_path), "%s/%s", new_cluster.pgdata, subdir);
     738          48 :     if (!rmtree(new_path, rmtopdir))
     739           0 :         pg_fatal("could not delete directory \"%s\"", new_path);
     740             : 
     741          48 :     check_ok();
     742          48 : }
     743             : 
     744             : /*
     745             :  * Copy the files from the old cluster into it
     746             :  */
     747             : static void
     748          48 : copy_subdir_files(const char *old_subdir, const char *new_subdir)
     749             : {
     750             :     char        old_path[MAXPGPATH];
     751             :     char        new_path[MAXPGPATH];
     752             : 
     753          48 :     remove_new_subdir(new_subdir, true);
     754             : 
     755          48 :     snprintf(old_path, sizeof(old_path), "%s/%s", old_cluster.pgdata, old_subdir);
     756          48 :     snprintf(new_path, sizeof(new_path), "%s/%s", new_cluster.pgdata, new_subdir);
     757             : 
     758          48 :     prep_status("Copying old %s to new server", old_subdir);
     759             : 
     760          48 :     exec_prog(UTILITY_LOG_FILE, NULL, true, true,
     761             : #ifndef WIN32
     762             :               "cp -Rf \"%s\" \"%s\"",
     763             : #else
     764             :     /* flags: everything, no confirm, quiet, overwrite read-only */
     765             :               "xcopy /e /y /q /r \"%s\" \"%s\\\"",
     766             : #endif
     767             :               old_path, new_path);
     768             : 
     769          48 :     check_ok();
     770          48 : }
     771             : 
     772             : static void
     773          16 : copy_xact_xlog_xid(void)
     774             : {
     775             :     /*
     776             :      * Copy old commit logs to new data dir. pg_clog has been renamed to
     777             :      * pg_xact in post-10 clusters.
     778             :      */
     779          16 :     copy_subdir_files(GET_MAJOR_VERSION(old_cluster.major_version) <= 906 ?
     780             :                       "pg_clog" : "pg_xact",
     781          16 :                       GET_MAJOR_VERSION(new_cluster.major_version) <= 906 ?
     782             :                       "pg_clog" : "pg_xact");
     783             : 
     784          16 :     prep_status("Setting oldest XID for new cluster");
     785          16 :     exec_prog(UTILITY_LOG_FILE, NULL, true, true,
     786             :               "\"%s/pg_resetwal\" -f -u %u \"%s\"",
     787             :               new_cluster.bindir, old_cluster.controldata.chkpnt_oldstxid,
     788             :               new_cluster.pgdata);
     789          16 :     check_ok();
     790             : 
     791             :     /* set the next transaction id and epoch of the new cluster */
     792          16 :     prep_status("Setting next transaction ID and epoch for new cluster");
     793          16 :     exec_prog(UTILITY_LOG_FILE, NULL, true, true,
     794             :               "\"%s/pg_resetwal\" -f -x %u \"%s\"",
     795             :               new_cluster.bindir, old_cluster.controldata.chkpnt_nxtxid,
     796             :               new_cluster.pgdata);
     797          16 :     exec_prog(UTILITY_LOG_FILE, NULL, true, true,
     798             :               "\"%s/pg_resetwal\" -f -e %u \"%s\"",
     799             :               new_cluster.bindir, old_cluster.controldata.chkpnt_nxtepoch,
     800             :               new_cluster.pgdata);
     801             :     /* must reset commit timestamp limits also */
     802          16 :     exec_prog(UTILITY_LOG_FILE, NULL, true, true,
     803             :               "\"%s/pg_resetwal\" -f -c %u,%u \"%s\"",
     804             :               new_cluster.bindir,
     805             :               old_cluster.controldata.chkpnt_nxtxid,
     806             :               old_cluster.controldata.chkpnt_nxtxid,
     807             :               new_cluster.pgdata);
     808          16 :     check_ok();
     809             : 
     810             :     /*
     811             :      * If the old server is before the MULTIXACT_FORMATCHANGE_CAT_VER change
     812             :      * (see pg_upgrade.h) and the new server is after, then we don't copy
     813             :      * pg_multixact files, but we need to reset pg_control so that the new
     814             :      * server doesn't attempt to read multis older than the cutoff value.
     815             :      */
     816          16 :     if (old_cluster.controldata.cat_ver >= MULTIXACT_FORMATCHANGE_CAT_VER &&
     817          16 :         new_cluster.controldata.cat_ver >= MULTIXACT_FORMATCHANGE_CAT_VER)
     818             :     {
     819          16 :         copy_subdir_files("pg_multixact/offsets", "pg_multixact/offsets");
     820          16 :         copy_subdir_files("pg_multixact/members", "pg_multixact/members");
     821             : 
     822          16 :         prep_status("Setting next multixact ID and offset for new cluster");
     823             : 
     824             :         /*
     825             :          * we preserve all files and contents, so we must preserve both "next"
     826             :          * counters here and the oldest multi present on system.
     827             :          */
     828          16 :         exec_prog(UTILITY_LOG_FILE, NULL, true, true,
     829             :                   "\"%s/pg_resetwal\" -O %u -m %u,%u \"%s\"",
     830             :                   new_cluster.bindir,
     831             :                   old_cluster.controldata.chkpnt_nxtmxoff,
     832             :                   old_cluster.controldata.chkpnt_nxtmulti,
     833             :                   old_cluster.controldata.chkpnt_oldstMulti,
     834             :                   new_cluster.pgdata);
     835          16 :         check_ok();
     836             :     }
     837           0 :     else if (new_cluster.controldata.cat_ver >= MULTIXACT_FORMATCHANGE_CAT_VER)
     838             :     {
     839             :         /*
     840             :          * Remove offsets/0000 file created by initdb that no longer matches
     841             :          * the new multi-xid value.  "members" starts at zero so no need to
     842             :          * remove it.
     843             :          */
     844           0 :         remove_new_subdir("pg_multixact/offsets", false);
     845             : 
     846           0 :         prep_status("Setting oldest multixact ID in new cluster");
     847             : 
     848             :         /*
     849             :          * We don't preserve files in this case, but it's important that the
     850             :          * oldest multi is set to the latest value used by the old system, so
     851             :          * that multixact.c returns the empty set for multis that might be
     852             :          * present on disk.  We set next multi to the value following that; it
     853             :          * might end up wrapped around (i.e. 0) if the old cluster had
     854             :          * next=MaxMultiXactId, but multixact.c can cope with that just fine.
     855             :          */
     856           0 :         exec_prog(UTILITY_LOG_FILE, NULL, true, true,
     857             :                   "\"%s/pg_resetwal\" -m %u,%u \"%s\"",
     858             :                   new_cluster.bindir,
     859           0 :                   old_cluster.controldata.chkpnt_nxtmulti + 1,
     860             :                   old_cluster.controldata.chkpnt_nxtmulti,
     861             :                   new_cluster.pgdata);
     862           0 :         check_ok();
     863             :     }
     864             : 
     865             :     /* now reset the wal archives in the new cluster */
     866          16 :     prep_status("Resetting WAL archives");
     867          16 :     exec_prog(UTILITY_LOG_FILE, NULL, true, true,
     868             :     /* use timeline 1 to match controldata and no WAL history file */
     869             :               "\"%s/pg_resetwal\" -l 00000001%s \"%s\"", new_cluster.bindir,
     870             :               old_cluster.controldata.nextxlogfile + 8,
     871             :               new_cluster.pgdata);
     872          16 :     check_ok();
     873          16 : }
     874             : 
     875             : 
     876             : /*
     877             :  *  set_frozenxids()
     878             :  *
     879             :  * This is called on the new cluster before we restore anything, with
     880             :  * minmxid_only = false.  Its purpose is to ensure that all initdb-created
     881             :  * vacuumable tables have relfrozenxid/relminmxid matching the old cluster's
     882             :  * xid/mxid counters.  We also initialize the datfrozenxid/datminmxid of the
     883             :  * built-in databases to match.
     884             :  *
     885             :  * As we create user tables later, their relfrozenxid/relminmxid fields will
     886             :  * be restored properly by the binary-upgrade restore script.  Likewise for
     887             :  * user-database datfrozenxid/datminmxid.  However, if we're upgrading from a
     888             :  * pre-9.3 database, which does not store per-table or per-DB minmxid, then
     889             :  * the relminmxid/datminmxid values filled in by the restore script will just
     890             :  * be zeroes.
     891             :  *
     892             :  * Hence, with a pre-9.3 source database, a second call occurs after
     893             :  * everything is restored, with minmxid_only = true.  This pass will
     894             :  * initialize all tables and databases, both those made by initdb and user
     895             :  * objects, with the desired minmxid value.  frozenxid values are left alone.
     896             :  */
     897             : static void
     898          16 : set_frozenxids(bool minmxid_only)
     899             : {
     900             :     int         dbnum;
     901             :     PGconn     *conn,
     902             :                *conn_template1;
     903             :     PGresult   *dbres;
     904             :     int         ntups;
     905             :     int         i_datname;
     906             :     int         i_datallowconn;
     907             : 
     908          16 :     if (!minmxid_only)
     909          16 :         prep_status("Setting frozenxid and minmxid counters in new cluster");
     910             :     else
     911           0 :         prep_status("Setting minmxid counter in new cluster");
     912             : 
     913          16 :     conn_template1 = connectToServer(&new_cluster, "template1");
     914             : 
     915          16 :     if (!minmxid_only)
     916             :         /* set pg_database.datfrozenxid */
     917          16 :         PQclear(executeQueryOrDie(conn_template1,
     918             :                                   "UPDATE pg_catalog.pg_database "
     919             :                                   "SET datfrozenxid = '%u'",
     920             :                                   old_cluster.controldata.chkpnt_nxtxid));
     921             : 
     922             :     /* set pg_database.datminmxid */
     923          16 :     PQclear(executeQueryOrDie(conn_template1,
     924             :                               "UPDATE pg_catalog.pg_database "
     925             :                               "SET datminmxid = '%u'",
     926             :                               old_cluster.controldata.chkpnt_nxtmulti));
     927             : 
     928             :     /* get database names */
     929          16 :     dbres = executeQueryOrDie(conn_template1,
     930             :                               "SELECT  datname, datallowconn "
     931             :                               "FROM    pg_catalog.pg_database");
     932             : 
     933          16 :     i_datname = PQfnumber(dbres, "datname");
     934          16 :     i_datallowconn = PQfnumber(dbres, "datallowconn");
     935             : 
     936          16 :     ntups = PQntuples(dbres);
     937          64 :     for (dbnum = 0; dbnum < ntups; dbnum++)
     938             :     {
     939          48 :         char       *datname = PQgetvalue(dbres, dbnum, i_datname);
     940          48 :         char       *datallowconn = PQgetvalue(dbres, dbnum, i_datallowconn);
     941             : 
     942             :         /*
     943             :          * We must update databases where datallowconn = false, e.g.
     944             :          * template0, because autovacuum increments their datfrozenxids,
     945             :          * relfrozenxids, and relminmxid even if autovacuum is turned off, and
     946             :          * even though all the data rows are already frozen.  To enable this,
     947             :          * we temporarily change datallowconn.
     948             :          */
     949          48 :         if (strcmp(datallowconn, "f") == 0)
     950          16 :             PQclear(executeQueryOrDie(conn_template1,
     951             :                                       "ALTER DATABASE %s ALLOW_CONNECTIONS = true",
     952             :                                       quote_identifier(datname)));
     953             : 
     954          48 :         conn = connectToServer(&new_cluster, datname);
     955             : 
     956          48 :         if (!minmxid_only)
     957             :             /* set pg_class.relfrozenxid */
     958          48 :             PQclear(executeQueryOrDie(conn,
     959             :                                       "UPDATE  pg_catalog.pg_class "
     960             :                                       "SET relfrozenxid = '%u' "
     961             :             /* only heap, materialized view, and TOAST are vacuumed */
     962             :                                       "WHERE   relkind IN ("
     963             :                                       CppAsString2(RELKIND_RELATION) ", "
     964             :                                       CppAsString2(RELKIND_MATVIEW) ", "
     965             :                                       CppAsString2(RELKIND_TOASTVALUE) ")",
     966             :                                       old_cluster.controldata.chkpnt_nxtxid));
     967             : 
     968             :         /* set pg_class.relminmxid */
     969          48 :         PQclear(executeQueryOrDie(conn,
     970             :                                   "UPDATE  pg_catalog.pg_class "
     971             :                                   "SET relminmxid = '%u' "
     972             :         /* only heap, materialized view, and TOAST are vacuumed */
     973             :                                   "WHERE   relkind IN ("
     974             :                                   CppAsString2(RELKIND_RELATION) ", "
     975             :                                   CppAsString2(RELKIND_MATVIEW) ", "
     976             :                                   CppAsString2(RELKIND_TOASTVALUE) ")",
     977             :                                   old_cluster.controldata.chkpnt_nxtmulti));
     978          48 :         PQfinish(conn);
     979             : 
     980             :         /* Reset datallowconn flag */
     981          48 :         if (strcmp(datallowconn, "f") == 0)
     982          16 :             PQclear(executeQueryOrDie(conn_template1,
     983             :                                       "ALTER DATABASE %s ALLOW_CONNECTIONS = false",
     984             :                                       quote_identifier(datname)));
     985             :     }
     986             : 
     987          16 :     PQclear(dbres);
     988             : 
     989          16 :     PQfinish(conn_template1);
     990             : 
     991          16 :     check_ok();
     992          16 : }
     993             : 
     994             : /*
     995             :  * create_logical_replication_slots()
     996             :  *
     997             :  * Similar to create_new_objects() but only restores logical replication slots.
     998             :  */
     999             : static void
    1000           2 : create_logical_replication_slots(void)
    1001             : {
    1002           2 :     prep_status_progress("Restoring logical replication slots in the new cluster");
    1003             : 
    1004           6 :     for (int dbnum = 0; dbnum < old_cluster.dbarr.ndbs; dbnum++)
    1005             :     {
    1006           4 :         DbInfo     *old_db = &old_cluster.dbarr.dbs[dbnum];
    1007           4 :         LogicalSlotInfoArr *slot_arr = &old_db->slot_arr;
    1008             :         PGconn     *conn;
    1009             :         PQExpBuffer query;
    1010             : 
    1011             :         /* Skip this database if there are no slots */
    1012           4 :         if (slot_arr->nslots == 0)
    1013           2 :             continue;
    1014             : 
    1015           2 :         conn = connectToServer(&new_cluster, old_db->db_name);
    1016           2 :         query = createPQExpBuffer();
    1017             : 
    1018           2 :         pg_log(PG_STATUS, "%s", old_db->db_name);
    1019             : 
    1020           4 :         for (int slotnum = 0; slotnum < slot_arr->nslots; slotnum++)
    1021             :         {
    1022           2 :             LogicalSlotInfo *slot_info = &slot_arr->slots[slotnum];
    1023             : 
    1024             :             /* Constructs a query for creating logical replication slots */
    1025           2 :             appendPQExpBufferStr(query,
    1026             :                                  "SELECT * FROM "
    1027             :                                  "pg_catalog.pg_create_logical_replication_slot(");
    1028           2 :             appendStringLiteralConn(query, slot_info->slotname, conn);
    1029           2 :             appendPQExpBufferStr(query, ", ");
    1030           2 :             appendStringLiteralConn(query, slot_info->plugin, conn);
    1031             : 
    1032           4 :             appendPQExpBuffer(query, ", false, %s, %s);",
    1033           2 :                               slot_info->two_phase ? "true" : "false",
    1034           2 :                               slot_info->failover ? "true" : "false");
    1035             : 
    1036           2 :             PQclear(executeQueryOrDie(conn, "%s", query->data));
    1037             : 
    1038           2 :             resetPQExpBuffer(query);
    1039             :         }
    1040             : 
    1041           2 :         PQfinish(conn);
    1042             : 
    1043           2 :         destroyPQExpBuffer(query);
    1044             :     }
    1045             : 
    1046           2 :     end_progress_output();
    1047           2 :     check_ok();
    1048             : 
    1049           2 :     return;
    1050             : }
    1051             : 
    1052             : /*
    1053             :  * create_conflict_detection_slot()
    1054             :  *
    1055             :  * Create a replication slot to retain information necessary for conflict
    1056             :  * detection such as dead tuples, commit timestamps, and origins, for migrated
    1057             :  * subscriptions with retain_dead_tuples enabled.
    1058             :  */
    1059             : static void
    1060           2 : create_conflict_detection_slot(void)
    1061             : {
    1062             :     PGconn     *conn_new_template1;
    1063             : 
    1064           2 :     prep_status("Creating the replication conflict detection slot");
    1065             : 
    1066           2 :     conn_new_template1 = connectToServer(&new_cluster, "template1");
    1067           2 :     PQclear(executeQueryOrDie(conn_new_template1, "SELECT pg_catalog.binary_upgrade_create_conflict_detection_slot()"));
    1068           2 :     PQfinish(conn_new_template1);
    1069             : 
    1070           2 :     check_ok();
    1071           2 : }

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