mirror of
https://github.com/postgres/postgres.git
synced 2025-07-27 12:41:57 +03:00
Restructure the pg_upgrade code to use several global structures rather
than packing everything into 'ctx' and passing that to every function.
This commit is contained in:
Bruce Momjian
@ -13,66 +13,65 @@
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#include <langinfo.h>
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#endif
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static void disable_old_cluster(migratorContext *ctx);
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static void prepare_new_cluster(migratorContext *ctx);
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static void prepare_new_databases(migratorContext *ctx);
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static void create_new_objects(migratorContext *ctx);
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static void copy_clog_xlog_xid(migratorContext *ctx);
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static void set_frozenxids(migratorContext *ctx);
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static void setup(migratorContext *ctx, char *argv0, bool live_check);
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static void cleanup(migratorContext *ctx);
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static void disable_old_cluster(void);
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static void prepare_new_cluster(void);
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static void prepare_new_databases(void);
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static void create_new_objects(void);
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static void copy_clog_xlog_xid(void);
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static void set_frozenxids(void);
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static void setup(char *argv0, bool live_check);
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static void cleanup(void);
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ClusterInfo old_cluster, new_cluster;
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OSInfo os_info;
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int
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main(int argc, char **argv)
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{
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migratorContext ctx;
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char *sequence_script_file_name = NULL;
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char *deletion_script_file_name = NULL;
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bool live_check = false;
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memset(&ctx, 0, sizeof(ctx));
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parseCommandLine(argc, argv);
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parseCommandLine(&ctx, argc, argv);
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output_check_banner(&live_check);
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output_check_banner(&ctx, &live_check);
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setup(argv[0], live_check);
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setup(&ctx, argv[0], live_check);
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check_cluster_versions();
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check_cluster_compatibility(live_check);
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check_cluster_versions(&ctx);
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check_cluster_compatibility(&ctx, live_check);
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check_old_cluster(&ctx, live_check, &sequence_script_file_name);
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check_old_cluster(live_check, &sequence_script_file_name);
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/* -- NEW -- */
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start_postmaster(&ctx, CLUSTER_NEW, false);
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start_postmaster(CLUSTER_NEW, false);
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check_new_cluster(&ctx);
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report_clusters_compatible(&ctx);
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check_new_cluster();
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report_clusters_compatible();
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pg_log(&ctx, PG_REPORT, "\nPerforming Migration\n");
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pg_log(&ctx, PG_REPORT, "--------------------\n");
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pg_log(PG_REPORT, "\nPerforming Migration\n");
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pg_log(PG_REPORT, "--------------------\n");
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disable_old_cluster(&ctx);
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prepare_new_cluster(&ctx);
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disable_old_cluster();
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prepare_new_cluster();
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stop_postmaster(&ctx, false, false);
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stop_postmaster(false, false);
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/*
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* Destructive Changes to New Cluster
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*/
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copy_clog_xlog_xid(&ctx);
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copy_clog_xlog_xid();
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/* New now using xids of the old system */
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prepare_new_databases(&ctx);
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prepare_new_databases();
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create_new_objects(&ctx);
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create_new_objects();
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transfer_all_new_dbs(&ctx, &ctx.old.dbarr, &ctx.new.dbarr,
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ctx.old.pgdata, ctx.new.pgdata);
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transfer_all_new_dbs(&old_cluster.dbarr, &new_cluster.dbarr,
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old_cluster.pgdata, new_cluster.pgdata);
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/*
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* Assuming OIDs are only used in system tables, there is no need to
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@ -80,32 +79,32 @@ main(int argc, char **argv)
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* the old system, but we do it anyway just in case. We do it late here
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* because there is no need to have the schema load use new oids.
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*/
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prep_status(&ctx, "Setting next oid for new cluster");
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exec_prog(&ctx, true, SYSTEMQUOTE "\"%s/pg_resetxlog\" -o %u \"%s\" > "
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prep_status("Setting next oid for new cluster");
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exec_prog(true, SYSTEMQUOTE "\"%s/pg_resetxlog\" -o %u \"%s\" > "
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DEVNULL SYSTEMQUOTE,
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ctx.new.bindir, ctx.old.controldata.chkpnt_nxtoid, ctx.new.pgdata);
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check_ok(&ctx);
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new_cluster.bindir, old_cluster.controldata.chkpnt_nxtoid, new_cluster.pgdata);
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check_ok();
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create_script_for_old_cluster_deletion(&ctx, &deletion_script_file_name);
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create_script_for_old_cluster_deletion(&deletion_script_file_name);
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issue_warnings(&ctx, sequence_script_file_name);
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issue_warnings(sequence_script_file_name);
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pg_log(&ctx, PG_REPORT, "\nUpgrade complete\n");
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pg_log(&ctx, PG_REPORT, "----------------\n");
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pg_log(PG_REPORT, "\nUpgrade complete\n");
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pg_log(PG_REPORT, "----------------\n");
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output_completion_banner(&ctx, deletion_script_file_name);
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output_completion_banner(deletion_script_file_name);
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pg_free(deletion_script_file_name);
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pg_free(sequence_script_file_name);
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cleanup(&ctx);
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cleanup();
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return 0;
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}
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static void
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setup(migratorContext *ctx, char *argv0, bool live_check)
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setup(char *argv0, bool live_check)
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{
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char exec_path[MAXPGPATH]; /* full path to my executable */
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@ -113,57 +112,57 @@ setup(migratorContext *ctx, char *argv0, bool live_check)
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* make sure the user has a clean environment, otherwise, we may confuse
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* libpq when we connect to one (or both) of the servers.
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*/
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check_for_libpq_envvars(ctx);
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check_for_libpq_envvars();
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verify_directories(ctx);
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verify_directories();
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/* no postmasters should be running */
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if (!live_check && is_server_running(ctx, ctx->old.pgdata))
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if (!live_check && is_server_running(old_cluster.pgdata))
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{
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pg_log(ctx, PG_FATAL, "There seems to be a postmaster servicing the old cluster.\n"
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pg_log(PG_FATAL, "There seems to be a postmaster servicing the old cluster.\n"
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"Please shutdown that postmaster and try again.\n");
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}
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/* same goes for the new postmaster */
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if (is_server_running(ctx, ctx->new.pgdata))
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if (is_server_running(new_cluster.pgdata))
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{
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pg_log(ctx, PG_FATAL, "There seems to be a postmaster servicing the new cluster.\n"
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pg_log(PG_FATAL, "There seems to be a postmaster servicing the new cluster.\n"
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"Please shutdown that postmaster and try again.\n");
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}
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/* get path to pg_upgrade executable */
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if (find_my_exec(argv0, exec_path) < 0)
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pg_log(ctx, PG_FATAL, "Could not get pathname to pg_upgrade: %s\n", getErrorText(errno));
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pg_log(PG_FATAL, "Could not get pathname to pg_upgrade: %s\n", getErrorText(errno));
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/* Trim off program name and keep just path */
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*last_dir_separator(exec_path) = '\0';
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canonicalize_path(exec_path);
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ctx->exec_path = pg_strdup(ctx, exec_path);
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os_info.exec_path = pg_strdup(exec_path);
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}
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static void
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disable_old_cluster(migratorContext *ctx)
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disable_old_cluster(void)
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{
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/* rename pg_control so old server cannot be accidentally started */
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rename_old_pg_control(ctx);
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rename_old_pg_control();
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}
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static void
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prepare_new_cluster(migratorContext *ctx)
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prepare_new_cluster(void)
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{
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/*
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* It would make more sense to freeze after loading the schema, but that
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* would cause us to lose the frozenids restored by the load. We use
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* --analyze so autovacuum doesn't update statistics later
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*/
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prep_status(ctx, "Analyzing all rows in the new cluster");
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exec_prog(ctx, true,
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prep_status("Analyzing all rows in the new cluster");
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exec_prog(true,
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SYSTEMQUOTE "\"%s/vacuumdb\" --port %d --username \"%s\" "
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"--all --analyze >> %s 2>&1" SYSTEMQUOTE,
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ctx->new.bindir, ctx->new.port, ctx->user, ctx->logfile);
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check_ok(ctx);
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new_cluster.bindir, new_cluster.port, os_info.user, log.filename);
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check_ok();
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/*
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* We do freeze after analyze so pg_statistic is also frozen. template0 is
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@ -171,22 +170,22 @@ prepare_new_cluster(migratorContext *ctx)
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* datfrozenxid and relfrozenxids later to match the new xid counter
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* later.
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*/
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prep_status(ctx, "Freezing all rows on the new cluster");
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exec_prog(ctx, true,
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prep_status("Freezing all rows on the new cluster");
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exec_prog(true,
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SYSTEMQUOTE "\"%s/vacuumdb\" --port %d --username \"%s\" "
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"--all --freeze >> %s 2>&1" SYSTEMQUOTE,
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ctx->new.bindir, ctx->new.port, ctx->user, ctx->logfile);
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check_ok(ctx);
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new_cluster.bindir, new_cluster.port, os_info.user, log.filename);
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check_ok();
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get_pg_database_relfilenode(ctx, CLUSTER_NEW);
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get_pg_database_relfilenode(CLUSTER_NEW);
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}
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static void
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prepare_new_databases(migratorContext *ctx)
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prepare_new_databases(void)
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{
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/* -- NEW -- */
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start_postmaster(ctx, CLUSTER_NEW, false);
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start_postmaster(CLUSTER_NEW, false);
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/*
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* We set autovacuum_freeze_max_age to its maximum value so autovacuum
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@ -194,96 +193,96 @@ prepare_new_databases(migratorContext *ctx)
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* set.
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*/
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set_frozenxids(ctx);
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set_frozenxids();
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/*
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* We have to create the databases first so we can create the toast table
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* placeholder relfiles.
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*/
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prep_status(ctx, "Creating databases in the new cluster");
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exec_prog(ctx, true,
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prep_status("Creating databases in the new cluster");
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exec_prog(true,
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SYSTEMQUOTE "\"%s/psql\" --set ON_ERROR_STOP=on "
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/* --no-psqlrc prevents AUTOCOMMIT=off */
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"--no-psqlrc --port %d --username \"%s\" "
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"-f \"%s/%s\" --dbname template1 >> \"%s\"" SYSTEMQUOTE,
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ctx->new.bindir, ctx->new.port, ctx->user, ctx->cwd,
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GLOBALS_DUMP_FILE, ctx->logfile);
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check_ok(ctx);
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new_cluster.bindir, new_cluster.port, os_info.user, os_info.cwd,
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GLOBALS_DUMP_FILE, log.filename);
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check_ok();
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get_db_and_rel_infos(ctx, &ctx->new.dbarr, CLUSTER_NEW);
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get_db_and_rel_infos(&new_cluster.dbarr, CLUSTER_NEW);
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stop_postmaster(ctx, false, false);
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stop_postmaster(false, false);
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}
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static void
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create_new_objects(migratorContext *ctx)
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create_new_objects(void)
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{
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/* -- NEW -- */
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start_postmaster(ctx, CLUSTER_NEW, false);
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start_postmaster(CLUSTER_NEW, false);
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install_support_functions(ctx);
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install_support_functions();
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prep_status(ctx, "Restoring database schema to new cluster");
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exec_prog(ctx, true,
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prep_status("Restoring database schema to new cluster");
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exec_prog(true,
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SYSTEMQUOTE "\"%s/psql\" --set ON_ERROR_STOP=on "
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"--no-psqlrc --port %d --username \"%s\" "
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"-f \"%s/%s\" --dbname template1 >> \"%s\"" SYSTEMQUOTE,
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ctx->new.bindir, ctx->new.port, ctx->user, ctx->cwd,
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DB_DUMP_FILE, ctx->logfile);
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check_ok(ctx);
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new_cluster.bindir, new_cluster.port, os_info.user, os_info.cwd,
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DB_DUMP_FILE, log.filename);
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check_ok();
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/* regenerate now that we have db schemas */
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dbarr_free(&ctx->new.dbarr);
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get_db_and_rel_infos(ctx, &ctx->new.dbarr, CLUSTER_NEW);
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dbarr_free(&new_cluster.dbarr);
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get_db_and_rel_infos(&new_cluster.dbarr, CLUSTER_NEW);
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uninstall_support_functions(ctx);
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uninstall_support_functions();
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stop_postmaster(ctx, false, false);
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stop_postmaster(false, false);
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}
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static void
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copy_clog_xlog_xid(migratorContext *ctx)
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copy_clog_xlog_xid(void)
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{
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char old_clog_path[MAXPGPATH];
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char new_clog_path[MAXPGPATH];
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/* copy old commit logs to new data dir */
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prep_status(ctx, "Deleting new commit clogs");
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prep_status("Deleting new commit clogs");
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snprintf(old_clog_path, sizeof(old_clog_path), "%s/pg_clog", ctx->old.pgdata);
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snprintf(new_clog_path, sizeof(new_clog_path), "%s/pg_clog", ctx->new.pgdata);
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snprintf(old_clog_path, sizeof(old_clog_path), "%s/pg_clog", old_cluster.pgdata);
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snprintf(new_clog_path, sizeof(new_clog_path), "%s/pg_clog", new_cluster.pgdata);
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if (rmtree(new_clog_path, true) != true)
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pg_log(ctx, PG_FATAL, "Unable to delete directory %s\n", new_clog_path);
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check_ok(ctx);
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pg_log(PG_FATAL, "Unable to delete directory %s\n", new_clog_path);
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check_ok();
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prep_status(ctx, "Copying old commit clogs to new server");
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prep_status("Copying old commit clogs to new server");
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/* libpgport's copydir() doesn't work in FRONTEND code */
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#ifndef WIN32
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exec_prog(ctx, true, SYSTEMQUOTE "%s \"%s\" \"%s\"" SYSTEMQUOTE,
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exec_prog(true, SYSTEMQUOTE "%s \"%s\" \"%s\"" SYSTEMQUOTE,
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"cp -Rf",
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#else
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/* flags: everything, no confirm, quiet, overwrite read-only */
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exec_prog(ctx, true, SYSTEMQUOTE "%s \"%s\" \"%s\\\"" SYSTEMQUOTE,
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exec_prog(true, SYSTEMQUOTE "%s \"%s\" \"%s\\\"" SYSTEMQUOTE,
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"xcopy /e /y /q /r",
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#endif
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old_clog_path, new_clog_path);
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check_ok(ctx);
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check_ok();
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/* set the next transaction id of the new cluster */
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prep_status(ctx, "Setting next transaction id for new cluster");
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exec_prog(ctx, true, SYSTEMQUOTE "\"%s/pg_resetxlog\" -f -x %u \"%s\" > " DEVNULL SYSTEMQUOTE,
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ctx->new.bindir, ctx->old.controldata.chkpnt_nxtxid, ctx->new.pgdata);
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check_ok(ctx);
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prep_status("Setting next transaction id for new cluster");
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exec_prog(true, SYSTEMQUOTE "\"%s/pg_resetxlog\" -f -x %u \"%s\" > " DEVNULL SYSTEMQUOTE,
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new_cluster.bindir, old_cluster.controldata.chkpnt_nxtxid, new_cluster.pgdata);
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check_ok();
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/* now reset the wal archives in the new cluster */
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prep_status(ctx, "Resetting WAL archives");
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exec_prog(ctx, true, SYSTEMQUOTE "\"%s/pg_resetxlog\" -l %u,%u,%u \"%s\" >> \"%s\" 2>&1" SYSTEMQUOTE,
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ctx->new.bindir, ctx->old.controldata.chkpnt_tli,
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ctx->old.controldata.logid, ctx->old.controldata.nxtlogseg,
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ctx->new.pgdata, ctx->logfile);
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check_ok(ctx);
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prep_status("Resetting WAL archives");
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exec_prog(true, SYSTEMQUOTE "\"%s/pg_resetxlog\" -l %u,%u,%u \"%s\" >> \"%s\" 2>&1" SYSTEMQUOTE,
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new_cluster.bindir, old_cluster.controldata.chkpnt_tli,
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old_cluster.controldata.logid, old_cluster.controldata.nxtlogseg,
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new_cluster.pgdata, log.filename);
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check_ok();
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}
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@ -298,7 +297,7 @@ copy_clog_xlog_xid(migratorContext *ctx)
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*/
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static
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void
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set_frozenxids(migratorContext *ctx)
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set_frozenxids(void)
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{
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int dbnum;
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PGconn *conn,
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@ -308,18 +307,18 @@ set_frozenxids(migratorContext *ctx)
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int i_datname;
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int i_datallowconn;
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prep_status(ctx, "Setting frozenxid counters in new cluster");
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prep_status("Setting frozenxid counters in new cluster");
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conn_template1 = connectToServer(ctx, "template1", CLUSTER_NEW);
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conn_template1 = connectToServer("template1", CLUSTER_NEW);
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/* set pg_database.datfrozenxid */
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PQclear(executeQueryOrDie(ctx, conn_template1,
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PQclear(executeQueryOrDie(conn_template1,
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"UPDATE pg_catalog.pg_database "
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"SET datfrozenxid = '%u'",
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ctx->old.controldata.chkpnt_nxtxid));
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old_cluster.controldata.chkpnt_nxtxid));
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/* get database names */
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dbres = executeQueryOrDie(ctx, conn_template1,
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dbres = executeQueryOrDie(conn_template1,
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"SELECT datname, datallowconn "
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"FROM pg_catalog.pg_database");
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@ -340,25 +339,25 @@ set_frozenxids(migratorContext *ctx)
|
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* change datallowconn.
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*/
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if (strcmp(datallowconn, "f") == 0)
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PQclear(executeQueryOrDie(ctx, conn_template1,
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PQclear(executeQueryOrDie(conn_template1,
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"UPDATE pg_catalog.pg_database "
|
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"SET datallowconn = true "
|
||||
"WHERE datname = '%s'", datname));
|
||||
|
||||
conn = connectToServer(ctx, datname, CLUSTER_NEW);
|
||||
conn = connectToServer(datname, CLUSTER_NEW);
|
||||
|
||||
/* set pg_class.relfrozenxid */
|
||||
PQclear(executeQueryOrDie(ctx, conn,
|
||||
PQclear(executeQueryOrDie(conn,
|
||||
"UPDATE pg_catalog.pg_class "
|
||||
"SET relfrozenxid = '%u' "
|
||||
/* only heap and TOAST are vacuumed */
|
||||
"WHERE relkind IN ('r', 't')",
|
||||
ctx->old.controldata.chkpnt_nxtxid));
|
||||
old_cluster.controldata.chkpnt_nxtxid));
|
||||
PQfinish(conn);
|
||||
|
||||
/* Reset datallowconn flag */
|
||||
if (strcmp(datallowconn, "f") == 0)
|
||||
PQclear(executeQueryOrDie(ctx, conn_template1,
|
||||
PQclear(executeQueryOrDie(conn_template1,
|
||||
"UPDATE pg_catalog.pg_database "
|
||||
"SET datallowconn = false "
|
||||
"WHERE datname = '%s'", datname));
|
||||
@ -368,48 +367,48 @@ set_frozenxids(migratorContext *ctx)
|
||||
|
||||
PQfinish(conn_template1);
|
||||
|
||||
check_ok(ctx);
|
||||
check_ok();
|
||||
}
|
||||
|
||||
|
||||
static void
|
||||
cleanup(migratorContext *ctx)
|
||||
cleanup(void)
|
||||
{
|
||||
int tblnum;
|
||||
char filename[MAXPGPATH];
|
||||
|
||||
for (tblnum = 0; tblnum < ctx->num_tablespaces; tblnum++)
|
||||
pg_free(ctx->tablespaces[tblnum]);
|
||||
pg_free(ctx->tablespaces);
|
||||
for (tblnum = 0; tblnum < os_info.num_tablespaces; tblnum++)
|
||||
pg_free(os_info.tablespaces[tblnum]);
|
||||
pg_free(os_info.tablespaces);
|
||||
|
||||
dbarr_free(&ctx->old.dbarr);
|
||||
dbarr_free(&ctx->new.dbarr);
|
||||
pg_free(ctx->logfile);
|
||||
pg_free(ctx->user);
|
||||
pg_free(ctx->old.major_version_str);
|
||||
pg_free(ctx->new.major_version_str);
|
||||
pg_free(ctx->old.controldata.lc_collate);
|
||||
pg_free(ctx->new.controldata.lc_collate);
|
||||
pg_free(ctx->old.controldata.lc_ctype);
|
||||
pg_free(ctx->new.controldata.lc_ctype);
|
||||
pg_free(ctx->old.controldata.encoding);
|
||||
pg_free(ctx->new.controldata.encoding);
|
||||
pg_free(ctx->old.tablespace_suffix);
|
||||
pg_free(ctx->new.tablespace_suffix);
|
||||
dbarr_free(&old_cluster.dbarr);
|
||||
dbarr_free(&new_cluster.dbarr);
|
||||
pg_free(log.filename);
|
||||
pg_free(os_info.user);
|
||||
pg_free(old_cluster.major_version_str);
|
||||
pg_free(new_cluster.major_version_str);
|
||||
pg_free(old_cluster.controldata.lc_collate);
|
||||
pg_free(new_cluster.controldata.lc_collate);
|
||||
pg_free(old_cluster.controldata.lc_ctype);
|
||||
pg_free(new_cluster.controldata.lc_ctype);
|
||||
pg_free(old_cluster.controldata.encoding);
|
||||
pg_free(new_cluster.controldata.encoding);
|
||||
pg_free(old_cluster.tablespace_suffix);
|
||||
pg_free(new_cluster.tablespace_suffix);
|
||||
|
||||
if (ctx->log_fd != NULL)
|
||||
if (log.fd != NULL)
|
||||
{
|
||||
fclose(ctx->log_fd);
|
||||
ctx->log_fd = NULL;
|
||||
fclose(log.fd);
|
||||
log.fd = NULL;
|
||||
}
|
||||
|
||||
if (ctx->debug_fd)
|
||||
fclose(ctx->debug_fd);
|
||||
if (log.debug_fd)
|
||||
fclose(log.debug_fd);
|
||||
|
||||
snprintf(filename, sizeof(filename), "%s/%s", ctx->cwd, ALL_DUMP_FILE);
|
||||
snprintf(filename, sizeof(filename), "%s/%s", os_info.cwd, ALL_DUMP_FILE);
|
||||
unlink(filename);
|
||||
snprintf(filename, sizeof(filename), "%s/%s", ctx->cwd, GLOBALS_DUMP_FILE);
|
||||
snprintf(filename, sizeof(filename), "%s/%s", os_info.cwd, GLOBALS_DUMP_FILE);
|
||||
unlink(filename);
|
||||
snprintf(filename, sizeof(filename), "%s/%s", ctx->cwd, DB_DUMP_FILE);
|
||||
snprintf(filename, sizeof(filename), "%s/%s", os_info.cwd, DB_DUMP_FILE);
|
||||
unlink(filename);
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user