mirror of
https://git.postgresql.org/git/postgresql.git
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642 lines
17 KiB
C
642 lines
17 KiB
C
/*
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* check.c
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*
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* server checks and output routines
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*
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* Copyright (c) 2010-2011, PostgreSQL Global Development Group
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* contrib/pg_upgrade/check.c
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*/
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#include "pg_upgrade.h"
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static void set_locale_and_encoding(ClusterInfo *cluster);
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static void check_new_db_is_empty(void);
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static void check_locale_and_encoding(ControlData *oldctrl,
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ControlData *newctrl);
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static void check_for_isn_and_int8_passing_mismatch(ClusterInfo *cluster);
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static void check_for_reg_data_type_usage(ClusterInfo *cluster);
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void
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output_check_banner(bool *live_check)
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{
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if (user_opts.check && is_server_running(old_cluster.pgdata))
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{
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*live_check = true;
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if (old_cluster.port == new_cluster.port)
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pg_log(PG_FATAL, "When checking a live server, "
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"the old and new port numbers must be different.\n");
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pg_log(PG_REPORT, "PerForming Consistency Checks on Old Live Server\n");
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pg_log(PG_REPORT, "------------------------------------------------\n");
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}
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else
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{
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pg_log(PG_REPORT, "Performing Consistency Checks\n");
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pg_log(PG_REPORT, "-----------------------------\n");
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}
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}
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void
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check_old_cluster(bool live_check,
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char **sequence_script_file_name)
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{
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/* -- OLD -- */
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if (!live_check)
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start_postmaster(&old_cluster, false);
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set_locale_and_encoding(&old_cluster);
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get_pg_database_relfilenode(&old_cluster);
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/* Extract a list of databases and tables from the old cluster */
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get_db_and_rel_infos(&old_cluster);
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init_tablespaces();
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get_loadable_libraries();
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/*
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* Check for various failure cases
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*/
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check_for_reg_data_type_usage(&old_cluster);
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check_for_isn_and_int8_passing_mismatch(&old_cluster);
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/* old = PG 8.3 checks? */
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if (GET_MAJOR_VERSION(old_cluster.major_version) <= 803)
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{
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old_8_3_check_for_name_data_type_usage(&old_cluster);
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old_8_3_check_for_tsquery_usage(&old_cluster);
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if (user_opts.check)
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{
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old_8_3_rebuild_tsvector_tables(&old_cluster, true);
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old_8_3_invalidate_hash_gin_indexes(&old_cluster, true);
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old_8_3_invalidate_bpchar_pattern_ops_indexes(&old_cluster, true);
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}
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else
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/*
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* While we have the old server running, create the script to
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* properly restore its sequence values but we report this at the
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* end.
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*/
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*sequence_script_file_name =
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old_8_3_create_sequence_script(&old_cluster);
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}
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/* Pre-PG 9.0 had no large object permissions */
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if (GET_MAJOR_VERSION(old_cluster.major_version) <= 804)
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new_9_0_populate_pg_largeobject_metadata(&old_cluster, true);
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/*
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* While not a check option, we do this now because this is the only time
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* the old server is running.
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*/
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if (!user_opts.check)
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{
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generate_old_dump();
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split_old_dump();
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}
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if (!live_check)
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stop_postmaster(false, false);
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}
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void
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check_new_cluster(void)
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{
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set_locale_and_encoding(&new_cluster);
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check_new_db_is_empty();
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check_loadable_libraries();
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check_locale_and_encoding(&old_cluster.controldata, &new_cluster.controldata);
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if (user_opts.transfer_mode == TRANSFER_MODE_LINK)
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check_hard_link();
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}
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void
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report_clusters_compatible(void)
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{
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if (user_opts.check)
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{
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pg_log(PG_REPORT, "\n*Clusters are compatible*\n");
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/* stops new cluster */
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stop_postmaster(false, false);
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exit(0);
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}
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pg_log(PG_REPORT, "\n"
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"| If pg_upgrade fails after this point, you must\n"
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"| re-initdb the new cluster before continuing.\n"
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"| You will also need to remove the \".old\" suffix\n"
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"| from %s/global/pg_control.old.\n", old_cluster.pgdata);
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}
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void
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issue_warnings(char *sequence_script_file_name)
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{
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/* old = PG 8.3 warnings? */
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if (GET_MAJOR_VERSION(old_cluster.major_version) <= 803)
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{
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start_postmaster(&new_cluster, true);
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/* restore proper sequence values using file created from old server */
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if (sequence_script_file_name)
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{
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prep_status("Adjusting sequences");
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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\" --dbname template1 >> \"%s\"" SYSTEMQUOTE,
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new_cluster.bindir, new_cluster.port, os_info.user,
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sequence_script_file_name, log_opts.filename);
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unlink(sequence_script_file_name);
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check_ok();
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}
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old_8_3_rebuild_tsvector_tables(&new_cluster, false);
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old_8_3_invalidate_hash_gin_indexes(&new_cluster, false);
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old_8_3_invalidate_bpchar_pattern_ops_indexes(&new_cluster, false);
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stop_postmaster(false, true);
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}
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/* Create dummy large object permissions for old < PG 9.0? */
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if (GET_MAJOR_VERSION(old_cluster.major_version) <= 804)
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{
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start_postmaster(&new_cluster, true);
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new_9_0_populate_pg_largeobject_metadata(&new_cluster, false);
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stop_postmaster(false, true);
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}
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}
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void
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output_completion_banner(char *deletion_script_file_name)
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{
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/* Did we copy the free space files? */
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if (GET_MAJOR_VERSION(old_cluster.major_version) >= 804)
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pg_log(PG_REPORT,
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"| Optimizer statistics are not transferred by pg_upgrade\n"
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"| so consider running:\n"
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"| \tvacuumdb --all --analyze-only\n"
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"| on the newly-upgraded cluster.\n\n");
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else
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pg_log(PG_REPORT,
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"| Optimizer statistics and free space information\n"
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"| are not transferred by pg_upgrade so consider\n"
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"| running:\n"
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"| \tvacuumdb --all --analyze\n"
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"| on the newly-upgraded cluster.\n\n");
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pg_log(PG_REPORT,
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"| Running this script will delete the old cluster's data files:\n"
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"| \t%s\n",
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deletion_script_file_name);
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}
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void
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check_cluster_versions(void)
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{
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/* get old and new cluster versions */
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old_cluster.major_version = get_major_server_version(&old_cluster);
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new_cluster.major_version = get_major_server_version(&new_cluster);
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/*
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* We allow upgrades from/to the same major version for alpha/beta
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* upgrades
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*/
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if (GET_MAJOR_VERSION(old_cluster.major_version) < 803)
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pg_log(PG_FATAL, "This utility can only upgrade from PostgreSQL version 8.3 and later.\n");
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/* Only current PG version is supported as a target */
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if (GET_MAJOR_VERSION(new_cluster.major_version) != GET_MAJOR_VERSION(PG_VERSION_NUM))
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pg_log(PG_FATAL, "This utility can only upgrade to PostgreSQL version %s.\n",
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PG_MAJORVERSION);
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/*
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* We can't allow downgrading because we use the target pg_dumpall, and
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* pg_dumpall cannot operate on new datbase versions, only older versions.
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*/
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if (old_cluster.major_version > new_cluster.major_version)
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pg_log(PG_FATAL, "This utility cannot be used to downgrade to older major PostgreSQL versions.\n");
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}
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void
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check_cluster_compatibility(bool live_check)
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{
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char libfile[MAXPGPATH];
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FILE *lib_test;
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/*
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* Test pg_upgrade_support.so is in the proper place. We cannot copy it
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* ourselves because install directories are typically root-owned.
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*/
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snprintf(libfile, sizeof(libfile), "%s/pg_upgrade_support%s", new_cluster.libpath,
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DLSUFFIX);
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if ((lib_test = fopen(libfile, "r")) == NULL)
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pg_log(PG_FATAL,
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"\npg_upgrade_support%s must be created and installed in %s\n", DLSUFFIX, libfile);
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else
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fclose(lib_test);
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/* get/check pg_control data of servers */
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get_control_data(&old_cluster, live_check);
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get_control_data(&new_cluster, false);
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check_control_data(&old_cluster.controldata, &new_cluster.controldata);
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/* Is it 9.0 but without tablespace directories? */
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if (GET_MAJOR_VERSION(new_cluster.major_version) == 900 &&
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new_cluster.controldata.cat_ver < TABLE_SPACE_SUBDIRS)
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pg_log(PG_FATAL, "This utility can only upgrade to PostgreSQL version 9.0 after 2010-01-11\n"
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"because of backend API changes made during development.\n");
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}
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/*
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* set_locale_and_encoding()
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*
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* query the database to get the template0 locale
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*/
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static void
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set_locale_and_encoding(ClusterInfo *cluster)
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{
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ControlData *ctrl = &cluster->controldata;
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PGconn *conn;
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PGresult *res;
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int i_encoding;
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int cluster_version = cluster->major_version;
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conn = connectToServer(cluster, "template1");
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/* for pg < 80400, we got the values from pg_controldata */
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if (cluster_version >= 80400)
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{
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int i_datcollate;
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int i_datctype;
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res = executeQueryOrDie(conn,
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"SELECT datcollate, datctype "
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"FROM pg_catalog.pg_database "
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"WHERE datname = 'template0' ");
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assert(PQntuples(res) == 1);
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i_datcollate = PQfnumber(res, "datcollate");
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i_datctype = PQfnumber(res, "datctype");
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ctrl->lc_collate = pg_strdup(PQgetvalue(res, 0, i_datcollate));
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ctrl->lc_ctype = pg_strdup(PQgetvalue(res, 0, i_datctype));
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PQclear(res);
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}
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res = executeQueryOrDie(conn,
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"SELECT pg_catalog.pg_encoding_to_char(encoding) "
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"FROM pg_catalog.pg_database "
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"WHERE datname = 'template0' ");
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assert(PQntuples(res) == 1);
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i_encoding = PQfnumber(res, "pg_encoding_to_char");
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ctrl->encoding = pg_strdup(PQgetvalue(res, 0, i_encoding));
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PQclear(res);
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PQfinish(conn);
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}
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/*
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* check_locale_and_encoding()
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*
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* locale is not in pg_controldata in 8.4 and later so
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* we probably had to get via a database query.
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*/
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static void
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check_locale_and_encoding(ControlData *oldctrl,
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ControlData *newctrl)
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{
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if (strcmp(oldctrl->lc_collate, newctrl->lc_collate) != 0)
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pg_log(PG_FATAL,
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"old and new cluster lc_collate values do not match\n");
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if (strcmp(oldctrl->lc_ctype, newctrl->lc_ctype) != 0)
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pg_log(PG_FATAL,
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"old and new cluster lc_ctype values do not match\n");
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if (strcmp(oldctrl->encoding, newctrl->encoding) != 0)
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pg_log(PG_FATAL,
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"old and new cluster encoding values do not match\n");
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}
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static void
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check_new_db_is_empty(void)
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{
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int dbnum;
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bool found = false;
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get_db_and_rel_infos(&new_cluster);
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for (dbnum = 0; dbnum < new_cluster.dbarr.ndbs; dbnum++)
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{
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int relnum;
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RelInfoArr *rel_arr = &new_cluster.dbarr.dbs[dbnum].rel_arr;
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for (relnum = 0; relnum < rel_arr->nrels;
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relnum++)
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{
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/* pg_largeobject and its index should be skipped */
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if (strcmp(rel_arr->rels[relnum].nspname, "pg_catalog") != 0)
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{
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found = true;
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break;
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}
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}
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}
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if (found)
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pg_log(PG_FATAL, "New cluster is not empty; exiting\n");
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}
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/*
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* create_script_for_old_cluster_deletion()
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*
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* This is particularly useful for tablespace deletion.
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*/
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void
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create_script_for_old_cluster_deletion(
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char **deletion_script_file_name)
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{
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FILE *script = NULL;
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int tblnum;
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*deletion_script_file_name = pg_malloc(MAXPGPATH);
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prep_status("Creating script to delete old cluster");
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snprintf(*deletion_script_file_name, MAXPGPATH, "%s/delete_old_cluster.%s",
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os_info.cwd, SCRIPT_EXT);
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if ((script = fopen(*deletion_script_file_name, "w")) == NULL)
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pg_log(PG_FATAL, "Could not create necessary file: %s\n",
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*deletion_script_file_name);
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#ifndef WIN32
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/* add shebang header */
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fprintf(script, "#!/bin/sh\n\n");
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#endif
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/* delete old cluster's default tablespace */
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fprintf(script, RMDIR_CMD " %s\n", old_cluster.pgdata);
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/* delete old cluster's alternate tablespaces */
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for (tblnum = 0; tblnum < os_info.num_tablespaces; tblnum++)
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{
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/*
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* Do the old cluster's per-database directories share a directory
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* with a new version-specific tablespace?
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*/
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if (strlen(old_cluster.tablespace_suffix) == 0)
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{
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/* delete per-database directories */
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int dbnum;
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fprintf(script, "\n");
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/* remove PG_VERSION? */
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if (GET_MAJOR_VERSION(old_cluster.major_version) <= 804)
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fprintf(script, RM_CMD " %s%s/PG_VERSION\n",
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os_info.tablespaces[tblnum], old_cluster.tablespace_suffix);
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for (dbnum = 0; dbnum < new_cluster.dbarr.ndbs; dbnum++)
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{
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fprintf(script, RMDIR_CMD " %s%s/%d\n",
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os_info.tablespaces[tblnum], old_cluster.tablespace_suffix,
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old_cluster.dbarr.dbs[dbnum].db_oid);
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}
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}
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else
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/*
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* Simply delete the tablespace directory, which might be ".old"
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* or a version-specific subdirectory.
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*/
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fprintf(script, RMDIR_CMD " %s%s\n",
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os_info.tablespaces[tblnum], old_cluster.tablespace_suffix);
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}
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fclose(script);
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#ifndef WIN32
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if (chmod(*deletion_script_file_name, S_IRWXU) != 0)
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pg_log(PG_FATAL, "Could not add execute permission to file: %s\n",
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*deletion_script_file_name);
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#endif
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check_ok();
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}
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/*
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* check_for_isn_and_int8_passing_mismatch()
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*
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* /contrib/isn relies on data type int8, and in 8.4 int8 can now be passed
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* by value. The schema dumps the CREATE TYPE PASSEDBYVALUE setting so
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* it must match for the old and new servers.
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*/
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static void
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check_for_isn_and_int8_passing_mismatch(ClusterInfo *cluster)
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{
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int dbnum;
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FILE *script = NULL;
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bool found = false;
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char output_path[MAXPGPATH];
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prep_status("Checking for /contrib/isn with bigint-passing mismatch");
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if (old_cluster.controldata.float8_pass_by_value ==
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new_cluster.controldata.float8_pass_by_value)
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{
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/* no mismatch */
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check_ok();
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return;
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}
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snprintf(output_path, sizeof(output_path), "%s/contrib_isn_and_int8_pass_by_value.txt",
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os_info.cwd);
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for (dbnum = 0; dbnum < cluster->dbarr.ndbs; dbnum++)
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{
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PGresult *res;
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bool db_used = false;
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int ntups;
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int rowno;
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int i_nspname,
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i_proname;
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DbInfo *active_db = &cluster->dbarr.dbs[dbnum];
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PGconn *conn = connectToServer(cluster, active_db->db_name);
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/* Find any functions coming from contrib/isn */
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res = executeQueryOrDie(conn,
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"SELECT n.nspname, p.proname "
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"FROM pg_catalog.pg_proc p, "
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" pg_catalog.pg_namespace n "
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"WHERE p.pronamespace = n.oid AND "
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" p.probin = '$libdir/isn'");
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ntups = PQntuples(res);
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i_nspname = PQfnumber(res, "nspname");
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i_proname = PQfnumber(res, "proname");
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for (rowno = 0; rowno < ntups; rowno++)
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{
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found = true;
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if (script == NULL && (script = fopen(output_path, "w")) == NULL)
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pg_log(PG_FATAL, "Could not create necessary file: %s\n", output_path);
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if (!db_used)
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{
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fprintf(script, "Database: %s\n", active_db->db_name);
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db_used = true;
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}
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fprintf(script, " %s.%s\n",
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PQgetvalue(res, rowno, i_nspname),
|
|
PQgetvalue(res, rowno, i_proname));
|
|
}
|
|
|
|
PQclear(res);
|
|
|
|
PQfinish(conn);
|
|
}
|
|
|
|
if (script)
|
|
fclose(script);
|
|
|
|
if (found)
|
|
{
|
|
pg_log(PG_REPORT, "fatal\n");
|
|
pg_log(PG_FATAL,
|
|
"| Your installation contains \"/contrib/isn\" functions\n"
|
|
"| which rely on the bigint data type. Your old and\n"
|
|
"| new clusters pass bigint values differently so this\n"
|
|
"| cluster cannot currently be upgraded. You can\n"
|
|
"| manually upgrade data that use \"/contrib/isn\"\n"
|
|
"| facilities and remove \"/contrib/isn\" from the\n"
|
|
"| old cluster and restart the upgrade. A list\n"
|
|
"| of the problem functions is in the file:\n"
|
|
"| \t%s\n\n", output_path);
|
|
}
|
|
else
|
|
check_ok();
|
|
}
|
|
|
|
|
|
/*
|
|
* check_for_reg_data_type_usage()
|
|
* pg_upgrade only preserves these system values:
|
|
* pg_class.relfilenode
|
|
* pg_type.oid
|
|
* pg_enum.oid
|
|
*
|
|
* Most of the reg* data types reference system catalog info that is
|
|
* not preserved, and hence these data types cannot be used in user
|
|
* tables upgraded by pg_upgrade.
|
|
*/
|
|
static void
|
|
check_for_reg_data_type_usage(ClusterInfo *cluster)
|
|
{
|
|
int dbnum;
|
|
FILE *script = NULL;
|
|
bool found = false;
|
|
char output_path[MAXPGPATH];
|
|
|
|
prep_status("Checking for reg* system oid user data types");
|
|
|
|
snprintf(output_path, sizeof(output_path), "%s/tables_using_reg.txt",
|
|
os_info.cwd);
|
|
|
|
for (dbnum = 0; dbnum < cluster->dbarr.ndbs; dbnum++)
|
|
{
|
|
PGresult *res;
|
|
bool db_used = false;
|
|
int ntups;
|
|
int rowno;
|
|
int i_nspname,
|
|
i_relname,
|
|
i_attname;
|
|
DbInfo *active_db = &cluster->dbarr.dbs[dbnum];
|
|
PGconn *conn = connectToServer(cluster, active_db->db_name);
|
|
|
|
res = executeQueryOrDie(conn,
|
|
"SELECT n.nspname, c.relname, a.attname "
|
|
"FROM pg_catalog.pg_class c, "
|
|
" pg_catalog.pg_namespace n, "
|
|
" pg_catalog.pg_attribute a "
|
|
"WHERE c.oid = a.attrelid AND "
|
|
" NOT a.attisdropped AND "
|
|
" a.atttypid IN ( "
|
|
" 'pg_catalog.regproc'::pg_catalog.regtype, "
|
|
" 'pg_catalog.regprocedure'::pg_catalog.regtype, "
|
|
" 'pg_catalog.regoper'::pg_catalog.regtype, "
|
|
" 'pg_catalog.regoperator'::pg_catalog.regtype, "
|
|
" 'pg_catalog.regclass'::pg_catalog.regtype, "
|
|
/* regtype.oid is preserved, so 'regtype' is OK */
|
|
" 'pg_catalog.regconfig'::pg_catalog.regtype, "
|
|
" 'pg_catalog.regdictionary'::pg_catalog.regtype) AND "
|
|
" c.relnamespace = n.oid AND "
|
|
" n.nspname != 'pg_catalog' AND "
|
|
" n.nspname != 'information_schema'");
|
|
|
|
ntups = PQntuples(res);
|
|
i_nspname = PQfnumber(res, "nspname");
|
|
i_relname = PQfnumber(res, "relname");
|
|
i_attname = PQfnumber(res, "attname");
|
|
for (rowno = 0; rowno < ntups; rowno++)
|
|
{
|
|
found = true;
|
|
if (script == NULL && (script = fopen(output_path, "w")) == NULL)
|
|
pg_log(PG_FATAL, "Could not create necessary file: %s\n", output_path);
|
|
if (!db_used)
|
|
{
|
|
fprintf(script, "Database: %s\n", active_db->db_name);
|
|
db_used = true;
|
|
}
|
|
fprintf(script, " %s.%s.%s\n",
|
|
PQgetvalue(res, rowno, i_nspname),
|
|
PQgetvalue(res, rowno, i_relname),
|
|
PQgetvalue(res, rowno, i_attname));
|
|
}
|
|
|
|
PQclear(res);
|
|
|
|
PQfinish(conn);
|
|
}
|
|
|
|
if (script)
|
|
fclose(script);
|
|
|
|
if (found)
|
|
{
|
|
pg_log(PG_REPORT, "fatal\n");
|
|
pg_log(PG_FATAL,
|
|
"| Your installation contains one of the reg* data types in\n"
|
|
"| user tables. These data types reference system oids that\n"
|
|
"| are not preserved by pg_upgrade, so this cluster cannot\n"
|
|
"| currently be upgraded. You can remove the problem tables\n"
|
|
"| and restart the upgrade. A list of the problem columns\n"
|
|
"| is in the file:\n"
|
|
"| \t%s\n\n", output_path);
|
|
}
|
|
else
|
|
check_ok();
|
|
}
|