mirror of
https://github.com/postgrespro/pg_probackup.git
synced 2024-11-24 08:52:38 +02:00
262 lines
8.2 KiB
C
262 lines
8.2 KiB
C
/*-------------------------------------------------------------------------
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*
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* pg_probackup.c: Backup/Recovery manager for PostgreSQL.
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*
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* Copyright (c) 2009-2013, NIPPON TELEGRAPH AND TELEPHONE CORPORATION
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*
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*-------------------------------------------------------------------------
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*/
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#include "pg_probackup.h"
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#include "streamutil.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <time.h>
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#include <sys/stat.h>
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const char *PROGRAM_VERSION = "1.0";
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const char *PROGRAM_URL = "https://github.com/postgrespro/pg_probackup";
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const char *PROGRAM_EMAIL = "https://github.com/postgrespro/pg_probackup/issues";
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/* path configuration */
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char *backup_path;
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char *pgdata;
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char arclog_path[MAXPGPATH];
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/* common configuration */
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bool check = false;
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/* directory configuration */
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pgBackup current;
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/* backup configuration */
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static bool smooth_checkpoint;
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static int keep_data_generations = KEEP_INFINITE;
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static int keep_data_days = KEEP_INFINITE;
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int num_threads = 1;
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bool stream_wal = false;
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bool from_replica = false;
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static bool backup_logs = false;
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bool progress = false;
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bool delete_wal = false;
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/* restore configuration */
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static char *target_time;
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static char *target_xid;
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static char *target_inclusive;
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static TimeLineID target_tli;
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static void opt_backup_mode(pgut_option *opt, const char *arg);
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static pgut_option options[] =
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{
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/* directory options */
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{ 's', 'D', "pgdata", &pgdata, SOURCE_ENV },
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{ 's', 'B', "backup-path", &backup_path, SOURCE_ENV },
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/* common options */
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/* { 'b', 'c', "check", &check },*/
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{ 'i', 'j', "threads", &num_threads },
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{ 'b', 8, "stream", &stream_wal },
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{ 'b', 11, "progress", &progress },
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/* backup options */
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{ 'b', 10, "backup-pg-log", &backup_logs },
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{ 'f', 'b', "backup-mode", opt_backup_mode, SOURCE_ENV },
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{ 'b', 'C', "smooth-checkpoint", &smooth_checkpoint, SOURCE_ENV },
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{ 's', 'S', "slot", &replication_slot, SOURCE_CMDLINE },
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/* options with only long name (keep-xxx) */
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/* { 'i', 1, "keep-data-generations", &keep_data_generations, SOURCE_ENV },
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{ 'i', 2, "keep-data-days", &keep_data_days, SOURCE_ENV },*/
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/* restore options */
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{ 's', 3, "time", &target_time, SOURCE_CMDLINE },
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{ 's', 4, "xid", &target_xid, SOURCE_CMDLINE },
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{ 's', 5, "inclusive", &target_inclusive, SOURCE_CMDLINE },
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{ 'u', 6, "timeline", &target_tli, SOURCE_CMDLINE },
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/* delete options */
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{ 'b', 12, "wal", &delete_wal },
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{ 0 }
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};
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/*
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* Entry point of pg_probackup command.
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*/
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int
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main(int argc, char *argv[])
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{
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const char *cmd = NULL;
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const char *backup_id_string = NULL;
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time_t backup_id = 0;
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int i;
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/* do not buffer progress messages */
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setvbuf(stdout, 0, _IONBF, 0); /* TODO: remove this */
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/* initialize configuration */
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catalog_init_config(¤t);
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/* overwrite configuration with command line arguments */
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i = pgut_getopt(argc, argv, options);
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for (; i < argc; i++)
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{
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if (cmd == NULL)
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{
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cmd = argv[i];
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if(strcmp(cmd, "show") != 0 &&
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strcmp(cmd, "validate") != 0 &&
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strcmp(cmd, "delete") != 0 &&
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strcmp(cmd, "restore") != 0 &&
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strcmp(cmd, "delwal") != 0)
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break;
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} else if (backup_id_string == NULL)
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backup_id_string = argv[i];
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else
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elog(ERROR, "too many arguments");
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}
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/* command argument (backup/restore/show/...) is required. */
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if (cmd == NULL)
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{
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help(false);
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return 1;
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}
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if (backup_id_string != NULL)
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{
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backup_id = base36dec(backup_id_string);
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if (backup_id == 0) {
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elog(ERROR, "wrong ID");
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}
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}
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/* Read default configuration from file. */
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if (backup_path)
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{
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char path[MAXPGPATH];
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/* Check if backup_path is directory. */
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struct stat stat_buf;
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int rc = stat(backup_path, &stat_buf);
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/* If rc == -1, there is no file or directory. So it's OK. */
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if (rc != -1 && !S_ISDIR(stat_buf.st_mode))
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elog(ERROR, "-B, --backup-path must be a path to directory");
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join_path_components(path, backup_path, PG_RMAN_INI_FILE);
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pgut_readopt(path, options, ERROR);
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/* setup stream options */
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if (pgut_dbname != NULL)
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dbname = pstrdup(pgut_dbname);
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if (host != NULL)
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dbhost = pstrdup(host);
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if (port != NULL)
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dbport = pstrdup(port);
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if (username != NULL)
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dbuser = pstrdup(username);
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}
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/* BACKUP_PATH is always required */
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if (backup_path == NULL)
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elog(ERROR, "required parameter not specified: BACKUP_PATH (-B, --backup-path)");
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/* path must be absolute */
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if (backup_path != NULL && !is_absolute_path(backup_path))
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elog(ERROR, "-B, --backup-path must be an absolute path");
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if (pgdata != NULL && !is_absolute_path(pgdata))
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elog(ERROR, "-D, --pgdata must be an absolute path");
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join_path_components(arclog_path, backup_path, "wal");
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/* setup exclusion list for file search */
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for (i = 0; pgdata_exclude[i]; i++); /* find first empty slot */
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pgdata_exclude[i++] = arclog_path;
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if(!backup_logs)
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pgdata_exclude[i++] = "pg_log";
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if (target_time != NULL && target_xid != NULL)
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elog(ERROR, "You can't specify recovery-target-time and recovery-target-xid at the same time");
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/* do actual operation */
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if (pg_strcasecmp(cmd, "init") == 0)
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return do_init();
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else if (pg_strcasecmp(cmd, "backup") == 0)
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{
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pgBackupOption bkupopt;
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int res;
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bkupopt.smooth_checkpoint = smooth_checkpoint;
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bkupopt.keep_data_generations = keep_data_generations;
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bkupopt.keep_data_days = keep_data_days;
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/* Do the backup */
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res = do_backup(bkupopt);
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if (res != 0)
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return res;
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do_validate(current.start_time);
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}
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else if (pg_strcasecmp(cmd, "restore") == 0)
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return do_restore(backup_id, target_time, target_xid,
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target_inclusive, target_tli);
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else if (pg_strcasecmp(cmd, "show") == 0)
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return do_show(backup_id);
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else if (pg_strcasecmp(cmd, "validate") == 0)
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return do_validate(backup_id);
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else if (pg_strcasecmp(cmd, "delete") == 0)
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return do_delete(backup_id);
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else if (pg_strcasecmp(cmd, "delwal") == 0)
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return do_deletewal(backup_id, true);
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else
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elog(ERROR, "invalid command \"%s\"", cmd);
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return 0;
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}
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void
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pgut_help(bool details)
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{
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printf(_("%s manage backup/recovery of PostgreSQL database.\n\n"), PROGRAM_NAME);
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printf(_("Usage:\n"));
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printf(_(" %s [option...] init\n"), PROGRAM_NAME);
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printf(_(" %s [option...] backup\n"), PROGRAM_NAME);
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printf(_(" %s [option...] restore\n"), PROGRAM_NAME);
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printf(_(" %s [option...] show [backup-ID]\n"), PROGRAM_NAME);
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printf(_(" %s [option...] validate [backup-ID]\n"), PROGRAM_NAME);
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printf(_(" %s [option...] delete backup-ID\n"), PROGRAM_NAME);
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printf(_(" %s [option...] delwal [backup-ID]\n"), PROGRAM_NAME);
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if (!details)
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return;
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printf(_("\nCommon Options:\n"));
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printf(_(" -B, --backup-path=PATH location of the backup storage area\n"));
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printf(_(" -D, --pgdata=PATH location of the database storage area\n"));
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/*printf(_(" -c, --check show what would have been done\n"));*/
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printf(_("\nBackup options:\n"));
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printf(_(" -b, --backup-mode=MODE backup mode (full, page, ptrack)\n"));
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printf(_(" -C, --smooth-checkpoint do smooth checkpoint before backup\n"));
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printf(_(" --stream stream the transaction log and include it in the backup\n"));
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/*printf(_(" --keep-data-generations=N keep GENERATION of full data backup\n"));
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printf(_(" --keep-data-days=DAY keep enough data backup to recover to DAY days age\n"));*/
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printf(_(" -S, --slot=SLOTNAME replication slot to use\n"));
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printf(_(" --backup-pg-log backup of pg_log directory\n"));
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printf(_(" -j, --threads=NUM number of parallel threads\n"));
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printf(_(" --progress show progress\n"));
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printf(_("\nRestore options:\n"));
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printf(_(" --time time stamp up to which recovery will proceed\n"));
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printf(_(" --xid transaction ID up to which recovery will proceed\n"));
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printf(_(" --inclusive whether we stop just after the recovery target\n"));
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printf(_(" --timeline recovering into a particular timeline\n"));
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printf(_(" -j, --threads=NUM number of parallel threads\n"));
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printf(_(" --progress show progress\n"));
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printf(_("\nDelete options:\n"));
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printf(_(" --wal remove unnecessary wal files\n"));
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}
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static void
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opt_backup_mode(pgut_option *opt, const char *arg)
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{
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current.backup_mode = parse_backup_mode(arg);
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}
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