#include "postgres_fe.h"
#include <time.h>
#include "catalog/pg_class_d.h"
#include "common/file_perm.h"
#include "common/logging.h"
#include "common/restricted_token.h"
#include "fe_utils/string_utils.h"
#include "pg_upgrade.h"

Include dependency graph for pg_upgrade.c:

Functions
static void	set_locale_and_encoding (void)

static void	prepare_new_cluster (void)

static void	prepare_new_globals (void)

static void	create_new_objects (void)

static void	copy_xact_xlog_xid (void)

static void	set_frozenxids (bool minmxid_only)

static void	make_outputdirs (char *pgdata)

static void	setup (char argv0, bool live_check)

int	main (int argc, char **argv)

static void	remove_new_subdir (const char *subdir, bool rmtopdir)

static void	copy_subdir_files (const char old_subdir, const char new_subdir)

Variables
ClusterInfo	old_cluster

ClusterInfo	new_cluster

OSInfo	os_info

char *	output_files []

Function Documentation

◆ copy_subdir_files()

static void copy_subdir_files	(	const char *	old_subdir,
		const char *	new_subdir
	)

static

Definition at line 620 of file pg_upgrade.c.

 {
     char        old_path[MAXPGPATH];
     char        new_path[MAXPGPATH];
  
     remove_new_subdir(new_subdir, true);
  
     snprintf(old_path, sizeof(old_path), "%s/%s", old_cluster.pgdata, old_subdir);
     snprintf(new_path, sizeof(new_path), "%s/%s", new_cluster.pgdata, new_subdir);
  
     prep_status("Copying old %s to new server", old_subdir);
  
     exec_prog(UTILITY_LOG_FILE, NULL, true, true,
 #ifndef WIN32
               "cp -Rf \"%s\" \"%s\"",
 #else
     /* flags: everything, no confirm, quiet, overwrite read-only */
               "xcopy /e /y /q /r \"%s\" \"%s\\\"",
 #endif
               old_path, new_path);
  
     check_ok();
 }

References check_ok(), exec_prog(), MAXPGPATH, new_cluster, old_cluster, ClusterInfo::pgdata, prep_status(), remove_new_subdir(), snprintf, and UTILITY_LOG_FILE.

Referenced by copy_xact_xlog_xid().

◆ copy_xact_xlog_xid()

static void copy_xact_xlog_xid ( void )

static

Definition at line 645 of file pg_upgrade.c.

 {
     /*
      * Copy old commit logs to new data dir. pg_clog has been renamed to
      * pg_xact in post-10 clusters.
      */
     copy_subdir_files(GET_MAJOR_VERSION(old_cluster.major_version) <= 906 ?
                       "pg_clog" : "pg_xact",
                       GET_MAJOR_VERSION(new_cluster.major_version) <= 906 ?
                       "pg_clog" : "pg_xact");
  
     prep_status("Setting oldest XID for new cluster");
     exec_prog(UTILITY_LOG_FILE, NULL, true, true,
               "\"%s/pg_resetwal\" -f -u %u \"%s\"",
               new_cluster.bindir, old_cluster.controldata.chkpnt_oldstxid,
               new_cluster.pgdata);
     check_ok();
  
     /* set the next transaction id and epoch of the new cluster */
     prep_status("Setting next transaction ID and epoch for new cluster");
     exec_prog(UTILITY_LOG_FILE, NULL, true, true,
               "\"%s/pg_resetwal\" -f -x %u \"%s\"",
               new_cluster.bindir, old_cluster.controldata.chkpnt_nxtxid,
               new_cluster.pgdata);
     exec_prog(UTILITY_LOG_FILE, NULL, true, true,
               "\"%s/pg_resetwal\" -f -e %u \"%s\"",
               new_cluster.bindir, old_cluster.controldata.chkpnt_nxtepoch,
               new_cluster.pgdata);
     /* must reset commit timestamp limits also */
     exec_prog(UTILITY_LOG_FILE, NULL, true, true,
               "\"%s/pg_resetwal\" -f -c %u,%u \"%s\"",
               new_cluster.bindir,
               old_cluster.controldata.chkpnt_nxtxid,
               old_cluster.controldata.chkpnt_nxtxid,
               new_cluster.pgdata);
     check_ok();
  
     /*
      * If the old server is before the MULTIXACT_FORMATCHANGE_CAT_VER change
      * (see pg_upgrade.h) and the new server is after, then we don't copy
      * pg_multixact files, but we need to reset pg_control so that the new
      * server doesn't attempt to read multis older than the cutoff value.
      */
     if (old_cluster.controldata.cat_ver >= MULTIXACT_FORMATCHANGE_CAT_VER &&
         new_cluster.controldata.cat_ver >= MULTIXACT_FORMATCHANGE_CAT_VER)
     {
         copy_subdir_files("pg_multixact/offsets", "pg_multixact/offsets");
         copy_subdir_files("pg_multixact/members", "pg_multixact/members");
  
         prep_status("Setting next multixact ID and offset for new cluster");
  
         /*
          * we preserve all files and contents, so we must preserve both "next"
          * counters here and the oldest multi present on system.
          */
         exec_prog(UTILITY_LOG_FILE, NULL, true, true,
                   "\"%s/pg_resetwal\" -O %u -m %u,%u \"%s\"",
                   new_cluster.bindir,
                   old_cluster.controldata.chkpnt_nxtmxoff,
                   old_cluster.controldata.chkpnt_nxtmulti,
                   old_cluster.controldata.chkpnt_oldstMulti,
                   new_cluster.pgdata);
         check_ok();
     }
     else if (new_cluster.controldata.cat_ver >= MULTIXACT_FORMATCHANGE_CAT_VER)
     {
         /*
          * Remove offsets/0000 file created by initdb that no longer matches
          * the new multi-xid value.  "members" starts at zero so no need to
          * remove it.
          */
         remove_new_subdir("pg_multixact/offsets", false);
  
         prep_status("Setting oldest multixact ID in new cluster");
  
         /*
          * We don't preserve files in this case, but it's important that the
          * oldest multi is set to the latest value used by the old system, so
          * that multixact.c returns the empty set for multis that might be
          * present on disk.  We set next multi to the value following that; it
          * might end up wrapped around (i.e. 0) if the old cluster had
          * next=MaxMultiXactId, but multixact.c can cope with that just fine.
          */
         exec_prog(UTILITY_LOG_FILE, NULL, true, true,
                   "\"%s/pg_resetwal\" -m %u,%u \"%s\"",
                   new_cluster.bindir,
                   old_cluster.controldata.chkpnt_nxtmulti + 1,
                   old_cluster.controldata.chkpnt_nxtmulti,
                   new_cluster.pgdata);
         check_ok();
     }
  
     /* now reset the wal archives in the new cluster */
     prep_status("Resetting WAL archives");
     exec_prog(UTILITY_LOG_FILE, NULL, true, true,
     /* use timeline 1 to match controldata and no WAL history file */
               "\"%s/pg_resetwal\" -l 00000001%s \"%s\"", new_cluster.bindir,
               old_cluster.controldata.nextxlogfile + 8,
               new_cluster.pgdata);
     check_ok();
 }

References ClusterInfo::bindir, ControlData::cat_ver, check_ok(), ControlData::chkpnt_nxtepoch, ControlData::chkpnt_nxtmulti, ControlData::chkpnt_nxtmxoff, ControlData::chkpnt_nxtxid, ControlData::chkpnt_oldstMulti, ControlData::chkpnt_oldstxid, ClusterInfo::controldata, copy_subdir_files(), exec_prog(), GET_MAJOR_VERSION, ClusterInfo::major_version, MULTIXACT_FORMATCHANGE_CAT_VER, new_cluster, ControlData::nextxlogfile, old_cluster, ClusterInfo::pgdata, prep_status(), remove_new_subdir(), and UTILITY_LOG_FILE.

Referenced by main().

◆ create_new_objects()

static void create_new_objects ( void )

static

Definition at line 497 of file pg_upgrade.c.

 {
     int         dbnum;
  
     prep_status_progress("Restoring database schemas in the new cluster");
  
     /*
      * We cannot process the template1 database concurrently with others,
      * because when it's transiently dropped, connection attempts would fail.
      * So handle it in a separate non-parallelized pass.
      */
     for (dbnum = 0; dbnum < old_cluster.dbarr.ndbs; dbnum++)
     {
         char        sql_file_name[MAXPGPATH],
                     log_file_name[MAXPGPATH];
         DbInfo     *old_db = &old_cluster.dbarr.dbs[dbnum];
         const char *create_opts;
  
         /* Process only template1 in this pass */
         if (strcmp(old_db->db_name, "template1") != 0)
             continue;
  
         pg_log(PG_STATUS, "%s", old_db->db_name);
         snprintf(sql_file_name, sizeof(sql_file_name), DB_DUMP_FILE_MASK, old_db->db_oid);
         snprintf(log_file_name, sizeof(log_file_name), DB_DUMP_LOG_FILE_MASK, old_db->db_oid);
  
         /*
          * template1 database will already exist in the target installation,
          * so tell pg_restore to drop and recreate it; otherwise we would fail
          * to propagate its database-level properties.
          */
         create_opts = "--clean --create";
  
         exec_prog(log_file_name,
                   NULL,
                   true,
                   true,
                   "\"%s/pg_restore\" %s %s --exit-on-error --verbose "
                   "--dbname postgres \"%s/%s\"",
                   new_cluster.bindir,
                   cluster_conn_opts(&new_cluster),
                   create_opts,
                   log_opts.dumpdir,
                   sql_file_name);
  
         break;                  /* done once we've processed template1 */
     }
  
     for (dbnum = 0; dbnum < old_cluster.dbarr.ndbs; dbnum++)
     {
         char        sql_file_name[MAXPGPATH],
                     log_file_name[MAXPGPATH];
         DbInfo     *old_db = &old_cluster.dbarr.dbs[dbnum];
         const char *create_opts;
  
         /* Skip template1 in this pass */
         if (strcmp(old_db->db_name, "template1") == 0)
             continue;
  
         pg_log(PG_STATUS, "%s", old_db->db_name);
         snprintf(sql_file_name, sizeof(sql_file_name), DB_DUMP_FILE_MASK, old_db->db_oid);
         snprintf(log_file_name, sizeof(log_file_name), DB_DUMP_LOG_FILE_MASK, old_db->db_oid);
  
         /*
          * postgres database will already exist in the target installation, so
          * tell pg_restore to drop and recreate it; otherwise we would fail to
          * propagate its database-level properties.
          */
         if (strcmp(old_db->db_name, "postgres") == 0)
             create_opts = "--clean --create";
         else
             create_opts = "--create";
  
         parallel_exec_prog(log_file_name,
                            NULL,
                            "\"%s/pg_restore\" %s %s --exit-on-error --verbose "
                            "--dbname template1 \"%s/%s\"",
                            new_cluster.bindir,
                            cluster_conn_opts(&new_cluster),
                            create_opts,
                            log_opts.dumpdir,
                            sql_file_name);
     }
  
     /* reap all children */
     while (reap_child(true) == true)
         ;
  
     end_progress_output();
     check_ok();
  
     /*
      * We don't have minmxids for databases or relations in pre-9.3 clusters,
      * so set those after we have restored the schema.
      */
     if (GET_MAJOR_VERSION(old_cluster.major_version) <= 902)
         set_frozenxids(true);
  
     /* update new_cluster info now that we have objects in the databases */
     get_db_and_rel_infos(&new_cluster);
 }

References ClusterInfo::bindir, check_ok(), cluster_conn_opts(), DB_DUMP_FILE_MASK, DB_DUMP_LOG_FILE_MASK, DbInfo::db_name, DbInfo::db_oid, ClusterInfo::dbarr, DbInfoArr::dbs, LogOpts::dumpdir, end_progress_output(), exec_prog(), get_db_and_rel_infos(), GET_MAJOR_VERSION, log_opts, ClusterInfo::major_version, MAXPGPATH, DbInfoArr::ndbs, new_cluster, old_cluster, parallel_exec_prog(), pg_log(), PG_STATUS, prep_status_progress(), reap_child(), set_frozenxids(), and snprintf.

Referenced by main().

◆ main()

int main	(	int	argc,
		char **	argv
	)

Definition at line 80 of file pg_upgrade.c.

 {
     char       *deletion_script_file_name = NULL;
     bool        live_check = false;
  
     /*
      * pg_upgrade doesn't currently use common/logging.c, but initialize it
      * anyway because we might call common code that does.
      */
     pg_logging_init(argv[0]);
     set_pglocale_pgservice(argv[0], PG_TEXTDOMAIN("pg_upgrade"));
  
     /* Set default restrictive mask until new cluster permissions are read */
     umask(PG_MODE_MASK_OWNER);
  
     parseCommandLine(argc, argv);
  
     get_restricted_token();
  
     adjust_data_dir(&old_cluster);
     adjust_data_dir(&new_cluster);
  
     /*
      * Set mask based on PGDATA permissions, needed for the creation of the
      * output directories with correct permissions.
      */
     if (!GetDataDirectoryCreatePerm(new_cluster.pgdata))
         pg_fatal("could not read permissions of directory \"%s\": %s",
                  new_cluster.pgdata, strerror(errno));
  
     umask(pg_mode_mask);
  
     /*
      * This needs to happen after adjusting the data directory of the new
      * cluster in adjust_data_dir().
      */
     make_outputdirs(new_cluster.pgdata);
  
     setup(argv[0], &live_check);
  
     output_check_banner(live_check);
  
     check_cluster_versions();
  
     get_sock_dir(&old_cluster, live_check);
     get_sock_dir(&new_cluster, false);
  
     check_cluster_compatibility(live_check);
  
     check_and_dump_old_cluster(live_check);
  
  
     /* -- NEW -- */
     start_postmaster(&new_cluster, true);
  
     check_new_cluster();
     report_clusters_compatible();
  
     pg_log(PG_REPORT,
            "\n"
            "Performing Upgrade\n"
            "------------------");
  
     set_locale_and_encoding();
  
     prepare_new_cluster();
  
     stop_postmaster(false);
  
     /*
      * Destructive Changes to New Cluster
      */
  
     copy_xact_xlog_xid();
  
     /* New now using xids of the old system */
  
     /* -- NEW -- */
     start_postmaster(&new_cluster, true);
  
     prepare_new_globals();
  
     create_new_objects();
  
     stop_postmaster(false);
  
     /*
      * Most failures happen in create_new_objects(), which has completed at
      * this point.  We do this here because it is just before linking, which
      * will link the old and new cluster data files, preventing the old
      * cluster from being safely started once the new cluster is started.
      */
     if (user_opts.transfer_mode == TRANSFER_MODE_LINK)
         disable_old_cluster();
  
     transfer_all_new_tablespaces(&old_cluster.dbarr, &new_cluster.dbarr,
                                  old_cluster.pgdata, new_cluster.pgdata);
  
     /*
      * Assuming OIDs are only used in system tables, there is no need to
      * restore the OID counter because we have not transferred any OIDs from
      * the old system, but we do it anyway just in case.  We do it late here
      * because there is no need to have the schema load use new oids.
      */
     prep_status("Setting next OID for new cluster");
     exec_prog(UTILITY_LOG_FILE, NULL, true, true,
               "\"%s/pg_resetwal\" -o %u \"%s\"",
               new_cluster.bindir, old_cluster.controldata.chkpnt_nxtoid,
               new_cluster.pgdata);
     check_ok();
  
     if (user_opts.do_sync)
     {
         prep_status("Sync data directory to disk");
         exec_prog(UTILITY_LOG_FILE, NULL, true, true,
                   "\"%s/initdb\" --sync-only \"%s\" --sync-method %s",
                   new_cluster.bindir,
                   new_cluster.pgdata,
                   user_opts.sync_method);
         check_ok();
     }
  
     create_script_for_old_cluster_deletion(&deletion_script_file_name);
  
     issue_warnings_and_set_wal_level();
  
     pg_log(PG_REPORT,
            "\n"
            "Upgrade Complete\n"
            "----------------");
  
     output_completion_banner(deletion_script_file_name);
  
     pg_free(deletion_script_file_name);
  
     cleanup_output_dirs();
  
     return 0;
 }

References adjust_data_dir(), ClusterInfo::bindir, check_and_dump_old_cluster(), check_cluster_compatibility(), check_cluster_versions(), check_new_cluster(), check_ok(), ControlData::chkpnt_nxtoid, cleanup_output_dirs(), ClusterInfo::controldata, copy_xact_xlog_xid(), create_new_objects(), create_script_for_old_cluster_deletion(), ClusterInfo::dbarr, disable_old_cluster(), UserOpts::do_sync, exec_prog(), get_restricted_token(), get_sock_dir(), GetDataDirectoryCreatePerm(), issue_warnings_and_set_wal_level(), make_outputdirs(), new_cluster, old_cluster, output_check_banner(), output_completion_banner(), parseCommandLine(), pg_fatal, pg_free(), pg_log(), pg_logging_init(), pg_mode_mask, PG_MODE_MASK_OWNER, PG_REPORT, PG_TEXTDOMAIN, ClusterInfo::pgdata, prep_status(), prepare_new_cluster(), prepare_new_globals(), report_clusters_compatible(), set_locale_and_encoding(), set_pglocale_pgservice(), setup(), start_postmaster(), stop_postmaster(), strerror, UserOpts::sync_method, transfer_all_new_tablespaces(), UserOpts::transfer_mode, TRANSFER_MODE_LINK, user_opts, and UTILITY_LOG_FILE.

◆ make_outputdirs()

static void make_outputdirs ( char * pgdata )

static

Definition at line 226 of file pg_upgrade.c.

 {
     FILE       *fp;
     char      **filename;
     time_t      run_time = time(NULL);
     char        filename_path[MAXPGPATH];
     char        timebuf[128];
     struct timeval time;
     time_t      tt;
     int         len;
  
     log_opts.rootdir = (char *) pg_malloc0(MAXPGPATH);
     len = snprintf(log_opts.rootdir, MAXPGPATH, "%s/%s", pgdata, BASE_OUTPUTDIR);
     if (len >= MAXPGPATH)
         pg_fatal("directory path for new cluster is too long");
  
     /* BASE_OUTPUTDIR/$timestamp/ */
     gettimeofday(&time, NULL);
     tt = (time_t) time.tv_sec;
     strftime(timebuf, sizeof(timebuf), "%Y%m%dT%H%M%S", localtime(&tt));
     /* append milliseconds */
     snprintf(timebuf + strlen(timebuf), sizeof(timebuf) - strlen(timebuf),
              ".%03d", (int) (time.tv_usec / 1000));
     log_opts.basedir = (char *) pg_malloc0(MAXPGPATH);
     len = snprintf(log_opts.basedir, MAXPGPATH, "%s/%s", log_opts.rootdir,
                    timebuf);
     if (len >= MAXPGPATH)
         pg_fatal("directory path for new cluster is too long");
  
     /* BASE_OUTPUTDIR/$timestamp/dump/ */
     log_opts.dumpdir = (char *) pg_malloc0(MAXPGPATH);
     len = snprintf(log_opts.dumpdir, MAXPGPATH, "%s/%s/%s", log_opts.rootdir,
                    timebuf, DUMP_OUTPUTDIR);
     if (len >= MAXPGPATH)
         pg_fatal("directory path for new cluster is too long");
  
     /* BASE_OUTPUTDIR/$timestamp/log/ */
     log_opts.logdir = (char *) pg_malloc0(MAXPGPATH);
     len = snprintf(log_opts.logdir, MAXPGPATH, "%s/%s/%s", log_opts.rootdir,
                    timebuf, LOG_OUTPUTDIR);
     if (len >= MAXPGPATH)
         pg_fatal("directory path for new cluster is too long");
  
     /*
      * Ignore the error case where the root path exists, as it is kept the
      * same across runs.
      */
     if (mkdir(log_opts.rootdir, pg_dir_create_mode) < 0 && errno != EEXIST)
         pg_fatal("could not create directory \"%s\": %m", log_opts.rootdir);
     if (mkdir(log_opts.basedir, pg_dir_create_mode) < 0)
         pg_fatal("could not create directory \"%s\": %m", log_opts.basedir);
     if (mkdir(log_opts.dumpdir, pg_dir_create_mode) < 0)
         pg_fatal("could not create directory \"%s\": %m", log_opts.dumpdir);
     if (mkdir(log_opts.logdir, pg_dir_create_mode) < 0)
         pg_fatal("could not create directory \"%s\": %m", log_opts.logdir);
  
     len = snprintf(filename_path, sizeof(filename_path), "%s/%s",
                    log_opts.logdir, INTERNAL_LOG_FILE);
     if (len >= sizeof(filename_path))
         pg_fatal("directory path for new cluster is too long");
  
     if ((log_opts.internal = fopen_priv(filename_path, "a")) == NULL)
         pg_fatal("could not open log file \"%s\": %m", filename_path);
  
     /* label start of upgrade in logfiles */
     for (filename = output_files; *filename != NULL; filename++)
     {
         len = snprintf(filename_path, sizeof(filename_path), "%s/%s",
                        log_opts.logdir, *filename);
         if (len >= sizeof(filename_path))
             pg_fatal("directory path for new cluster is too long");
         if ((fp = fopen_priv(filename_path, "a")) == NULL)
             pg_fatal("could not write to log file \"%s\": %m", filename_path);
  
         fprintf(fp,
                 "-----------------------------------------------------------------\n"
                 "  pg_upgrade run on %s"
                 "-----------------------------------------------------------------\n\n",
                 ctime(&run_time));
         fclose(fp);
     }
 }

References BASE_OUTPUTDIR, LogOpts::basedir, DUMP_OUTPUTDIR, LogOpts::dumpdir, filename, fopen_priv, fprintf, gettimeofday(), LogOpts::internal, INTERNAL_LOG_FILE, len, log_opts, LOG_OUTPUTDIR, LogOpts::logdir, MAXPGPATH, mkdir, output_files, pg_dir_create_mode, pg_fatal, pg_malloc0(), LogOpts::rootdir, and snprintf.

Referenced by main().

◆ prepare_new_cluster()

static void prepare_new_cluster ( void )

static

Definition at line 445 of file pg_upgrade.c.

 {
     /*
      * It would make more sense to freeze after loading the schema, but that
      * would cause us to lose the frozenxids restored by the load. We use
      * --analyze so autovacuum doesn't update statistics later
      */
     prep_status("Analyzing all rows in the new cluster");
     exec_prog(UTILITY_LOG_FILE, NULL, true, true,
               "\"%s/vacuumdb\" %s --all --analyze %s",
               new_cluster.bindir, cluster_conn_opts(&new_cluster),
               log_opts.verbose ? "--verbose" : "");
     check_ok();
  
     /*
      * We do freeze after analyze so pg_statistic is also frozen. template0 is
      * not frozen here, but data rows were frozen by initdb, and we set its
      * datfrozenxid, relfrozenxids, and relminmxid later to match the new xid
      * counter later.
      */
     prep_status("Freezing all rows in the new cluster");
     exec_prog(UTILITY_LOG_FILE, NULL, true, true,
               "\"%s/vacuumdb\" %s --all --freeze %s",
               new_cluster.bindir, cluster_conn_opts(&new_cluster),
               log_opts.verbose ? "--verbose" : "");
     check_ok();
 }

References ClusterInfo::bindir, check_ok(), cluster_conn_opts(), exec_prog(), log_opts, new_cluster, prep_status(), UTILITY_LOG_FILE, and LogOpts::verbose.

Referenced by main().

◆ prepare_new_globals()

static void prepare_new_globals ( void )

static

Definition at line 475 of file pg_upgrade.c.

 {
     /*
      * Before we restore anything, set frozenxids of initdb-created tables.
      */
     set_frozenxids(false);
  
     /*
      * Now restore global objects (roles and tablespaces).
      */
     prep_status("Restoring global objects in the new cluster");
  
     exec_prog(UTILITY_LOG_FILE, NULL, true, true,
               "\"%s/psql\" " EXEC_PSQL_ARGS " %s -f \"%s/%s\"",
               new_cluster.bindir, cluster_conn_opts(&new_cluster),
               log_opts.dumpdir,
               GLOBALS_DUMP_FILE);
     check_ok();
 }

References ClusterInfo::bindir, check_ok(), cluster_conn_opts(), LogOpts::dumpdir, exec_prog(), EXEC_PSQL_ARGS, GLOBALS_DUMP_FILE, log_opts, new_cluster, prep_status(), set_frozenxids(), and UTILITY_LOG_FILE.

Referenced by main().

◆ remove_new_subdir()

static void remove_new_subdir	(	const char *	subdir,
		bool	rmtopdir
	)

static

Definition at line 603 of file pg_upgrade.c.

 {
     char        new_path[MAXPGPATH];
  
     prep_status("Deleting files from new %s", subdir);
  
     snprintf(new_path, sizeof(new_path), "%s/%s", new_cluster.pgdata, subdir);
     if (!rmtree(new_path, rmtopdir))
         pg_fatal("could not delete directory \"%s\"", new_path);
  
     check_ok();
 }

References check_ok(), MAXPGPATH, new_cluster, pg_fatal, ClusterInfo::pgdata, prep_status(), rmtree(), and snprintf.

Referenced by copy_subdir_files(), and copy_xact_xlog_xid().

◆ set_frozenxids()

static void set_frozenxids ( bool minmxid_only )

static

Definition at line 770 of file pg_upgrade.c.

 {
     int         dbnum;
     PGconn     *conn,
                *conn_template1;
     PGresult   *dbres;
     int         ntups;
     int         i_datname;
     int         i_datallowconn;
  
     if (!minmxid_only)
         prep_status("Setting frozenxid and minmxid counters in new cluster");
     else
         prep_status("Setting minmxid counter in new cluster");
  
     conn_template1 = connectToServer(&new_cluster, "template1");
  
     if (!minmxid_only)
         /* set pg_database.datfrozenxid */
         PQclear(executeQueryOrDie(conn_template1,
                                   "UPDATE pg_catalog.pg_database "
                                   "SET  datfrozenxid = '%u'",
                                   old_cluster.controldata.chkpnt_nxtxid));
  
     /* set pg_database.datminmxid */
     PQclear(executeQueryOrDie(conn_template1,
                               "UPDATE pg_catalog.pg_database "
                               "SET  datminmxid = '%u'",
                               old_cluster.controldata.chkpnt_nxtmulti));
  
     /* get database names */
     dbres = executeQueryOrDie(conn_template1,
                               "SELECT   datname, datallowconn "
                               "FROM pg_catalog.pg_database");
  
     i_datname = PQfnumber(dbres, "datname");
     i_datallowconn = PQfnumber(dbres, "datallowconn");
  
     ntups = PQntuples(dbres);
     for (dbnum = 0; dbnum < ntups; dbnum++)
     {
         char       *datname = PQgetvalue(dbres, dbnum, i_datname);
         char       *datallowconn = PQgetvalue(dbres, dbnum, i_datallowconn);
  
         /*
          * We must update databases where datallowconn = false, e.g.
          * template0, because autovacuum increments their datfrozenxids,
          * relfrozenxids, and relminmxid even if autovacuum is turned off, and
          * even though all the data rows are already frozen.  To enable this,
          * we temporarily change datallowconn.
          */
         if (strcmp(datallowconn, "f") == 0)
             PQclear(executeQueryOrDie(conn_template1,
                                       "ALTER DATABASE %s ALLOW_CONNECTIONS = true",
                                       quote_identifier(datname)));
  
         conn = connectToServer(&new_cluster, datname);
  
         if (!minmxid_only)
             /* set pg_class.relfrozenxid */
             PQclear(executeQueryOrDie(conn,
                                       "UPDATE   pg_catalog.pg_class "
                                       "SET  relfrozenxid = '%u' "
             /* only heap, materialized view, and TOAST are vacuumed */
                                       "WHERE    relkind IN ("
                                       CppAsString2(RELKIND_RELATION) ", "
                                       CppAsString2(RELKIND_MATVIEW) ", "
                                       CppAsString2(RELKIND_TOASTVALUE) ")",
                                       old_cluster.controldata.chkpnt_nxtxid));
  
         /* set pg_class.relminmxid */
         PQclear(executeQueryOrDie(conn,
                                   "UPDATE   pg_catalog.pg_class "
                                   "SET  relminmxid = '%u' "
         /* only heap, materialized view, and TOAST are vacuumed */
                                   "WHERE    relkind IN ("
                                   CppAsString2(RELKIND_RELATION) ", "
                                   CppAsString2(RELKIND_MATVIEW) ", "
                                   CppAsString2(RELKIND_TOASTVALUE) ")",
                                   old_cluster.controldata.chkpnt_nxtmulti));
         PQfinish(conn);
  
         /* Reset datallowconn flag */
         if (strcmp(datallowconn, "f") == 0)
             PQclear(executeQueryOrDie(conn_template1,
                                       "ALTER DATABASE %s ALLOW_CONNECTIONS = false",
                                       quote_identifier(datname)));
     }
  
     PQclear(dbres);
  
     PQfinish(conn_template1);
  
     check_ok();
 }

References check_ok(), ControlData::chkpnt_nxtmulti, ControlData::chkpnt_nxtxid, conn, connectToServer(), ClusterInfo::controldata, CppAsString2, datallowconn, datname, executeQueryOrDie(), new_cluster, old_cluster, PQclear(), PQfinish(), PQfnumber(), PQgetvalue(), PQntuples(), prep_status(), and quote_identifier().

Referenced by create_new_objects(), and prepare_new_globals().

◆ set_locale_and_encoding()

static void set_locale_and_encoding ( void )

static

Definition at line 382 of file pg_upgrade.c.

 {
     PGconn     *conn_new_template1;
     char       *datcollate_literal;
     char       *datctype_literal;
     char       *daticulocale_literal = NULL;
     DbLocaleInfo *locale = old_cluster.template0;
  
     prep_status("Setting locale and encoding for new cluster");
  
     /* escape literals with respect to new cluster */
     conn_new_template1 = connectToServer(&new_cluster, "template1");
  
     datcollate_literal = PQescapeLiteral(conn_new_template1,
                                          locale->db_collate,
                                          strlen(locale->db_collate));
     datctype_literal = PQescapeLiteral(conn_new_template1,
                                        locale->db_ctype,
                                        strlen(locale->db_ctype));
     if (locale->db_iculocale)
         daticulocale_literal = PQescapeLiteral(conn_new_template1,
                                                locale->db_iculocale,
                                                strlen(locale->db_iculocale));
     else
         daticulocale_literal = pg_strdup("NULL");
  
     /* update template0 in new cluster */
     if (GET_MAJOR_VERSION(new_cluster.major_version) >= 1500)
         PQclear(executeQueryOrDie(conn_new_template1,
                                   "UPDATE pg_catalog.pg_database "
                                   "  SET encoding = %d, "
                                   "      datlocprovider = '%c', "
                                   "      datcollate = %s, "
                                   "      datctype = %s, "
                                   "      daticulocale = %s "
                                   "  WHERE datname = 'template0' ",
                                   locale->db_encoding,
                                   locale->db_collprovider,
                                   datcollate_literal,
                                   datctype_literal,
                                   daticulocale_literal));
     else
         PQclear(executeQueryOrDie(conn_new_template1,
                                   "UPDATE pg_catalog.pg_database "
                                   "  SET encoding = %d, "
                                   "      datcollate = %s, "
                                   "      datctype = %s "
                                   "  WHERE datname = 'template0' ",
                                   locale->db_encoding,
                                   datcollate_literal,
                                   datctype_literal));
  
     PQfreemem(datcollate_literal);
     PQfreemem(datctype_literal);
     PQfreemem(daticulocale_literal);
  
     PQfinish(conn_new_template1);
  
     check_ok();
 }

References check_ok(), connectToServer(), executeQueryOrDie(), GET_MAJOR_VERSION, locale, ClusterInfo::major_version, new_cluster, old_cluster, pg_strdup(), PQclear(), PQescapeLiteral(), PQfinish(), PQfreemem(), prep_status(), and ClusterInfo::template0.

Referenced by main().

◆ setup()

static void setup	(	char *	argv0,
		bool *	live_check
	)

static

Definition at line 311 of file pg_upgrade.c.

 {
     /*
      * make sure the user has a clean environment, otherwise, we may confuse
      * libpq when we connect to one (or both) of the servers.
      */
     check_pghost_envvar();
  
     /*
      * In case the user hasn't specified the directory for the new binaries
      * with -B, default to using the path of the currently executed pg_upgrade
      * binary.
      */
     if (!new_cluster.bindir)
     {
         char        exec_path[MAXPGPATH];
  
         if (find_my_exec(argv0, exec_path) < 0)
             pg_fatal("%s: could not find own program executable", argv0);
         /* Trim off program name and keep just path */
         *last_dir_separator(exec_path) = '\0';
         canonicalize_path(exec_path);
         new_cluster.bindir = pg_strdup(exec_path);
     }
  
     verify_directories();
  
     /* no postmasters should be running, except for a live check */
     if (pid_lock_file_exists(old_cluster.pgdata))
     {
         /*
          * If we have a postmaster.pid file, try to start the server.  If it
          * starts, the pid file was stale, so stop the server.  If it doesn't
          * start, assume the server is running.  If the pid file is left over
          * from a server crash, this also allows any committed transactions
          * stored in the WAL to be replayed so they are not lost, because WAL
          * files are not transferred from old to new servers.  We later check
          * for a clean shutdown.
          */
         if (start_postmaster(&old_cluster, false))
             stop_postmaster(false);
         else
         {
             if (!user_opts.check)
                 pg_fatal("There seems to be a postmaster servicing the old cluster.\n"
                          "Please shutdown that postmaster and try again.");
             else
                 *live_check = true;
         }
     }
  
     /* same goes for the new postmaster */
     if (pid_lock_file_exists(new_cluster.pgdata))
     {
         if (start_postmaster(&new_cluster, false))
             stop_postmaster(false);
         else
             pg_fatal("There seems to be a postmaster servicing the new cluster.\n"
                      "Please shutdown that postmaster and try again.");
     }
 }

References argv0, ClusterInfo::bindir, canonicalize_path(), UserOpts::check, check_pghost_envvar(), exec_path, find_my_exec(), last_dir_separator(), MAXPGPATH, new_cluster, old_cluster, pg_fatal, pg_strdup(), ClusterInfo::pgdata, pid_lock_file_exists(), start_postmaster(), stop_postmaster(), user_opts, and verify_directories().

Referenced by main().

Variable Documentation

◆ new_cluster

ClusterInfo new_cluster

Definition at line 64 of file pg_upgrade.c.

Referenced by check_bin_dir(), check_cluster_compatibility(), check_cluster_versions(), check_file_clone(), check_for_isn_and_int8_passing_mismatch(), check_for_new_tablespace_dir(), check_hard_link(), check_is_install_user(), check_loadable_libraries(), check_new_cluster(), check_new_cluster_is_empty(), copy_subdir_files(), copy_xact_xlog_xid(), create_new_objects(), create_rel_filename_map(), create_script_for_old_cluster_deletion(), generate_old_dump(), get_control_data(), init_tablespaces(), issue_warnings_and_set_wal_level(), main(), output_completion_banner(), parseCommandLine(), prepare_new_cluster(), prepare_new_globals(), remove_new_subdir(), rewriteVisibilityMap(), set_frozenxids(), set_locale_and_encoding(), setup(), start_postmaster(), stop_postmaster(), transfer_single_new_db(), usage(), and verify_directories().

◆ old_cluster

ClusterInfo old_cluster

◆ os_info

OSInfo os_info

Definition at line 65 of file pg_upgrade.c.

Referenced by check_for_new_tablespace_dir(), check_is_install_user(), check_loadable_libraries(), cluster_conn_opts(), create_script_for_old_cluster_deletion(), get_db_conn(), get_loadable_libraries(), get_tablespace_paths(), init_tablespaces(), output_completion_banner(), parseCommandLine(), start_postmaster(), stop_postmaster(), transfer_all_new_tablespaces(), and usage().

◆ output_files

char* output_files[]

Initial value:

= {
    SERVER_LOG_FILE,
 
 
 
 
    UTILITY_LOG_FILE,
    INTERNAL_LOG_FILE,
    NULL
}

Definition at line 67 of file pg_upgrade.c.

Referenced by make_outputdirs().

Functions

Variables

Function Documentation

◆ copy_subdir_files()

◆ copy_xact_xlog_xid()

◆ create_new_objects()

◆ main()

◆ make_outputdirs()

◆ prepare_new_cluster()

◆ prepare_new_globals()

◆ remove_new_subdir()

◆ set_frozenxids()

◆ set_locale_and_encoding()

◆ setup()

Variable Documentation

◆ new_cluster

◆ old_cluster

◆ os_info

◆ output_files