mirror of
https://git.postgresql.org/git/postgresql.git
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2427 lines
60 KiB
C
2427 lines
60 KiB
C
/*-------------------------------------------------------------------------
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*
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* pg_basebackup.c - receive a base backup using streaming replication protocol
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*
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* Author: Magnus Hagander <magnus@hagander.net>
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*
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* Portions Copyright (c) 1996-2017, PostgreSQL Global Development Group
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*
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* IDENTIFICATION
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* src/bin/pg_basebackup/pg_basebackup.c
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*-------------------------------------------------------------------------
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*/
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#include "postgres_fe.h"
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#include <unistd.h>
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#include <dirent.h>
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#include <sys/stat.h>
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#include <sys/wait.h>
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#include <signal.h>
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#include <time.h>
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#ifdef HAVE_SYS_SELECT_H
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#include <sys/select.h>
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#endif
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#ifdef HAVE_LIBZ
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#include <zlib.h>
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#endif
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#include "common/file_utils.h"
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#include "common/string.h"
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#include "fe_utils/string_utils.h"
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#include "getopt_long.h"
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#include "libpq-fe.h"
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#include "pqexpbuffer.h"
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#include "pgtar.h"
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#include "pgtime.h"
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#include "receivelog.h"
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#include "replication/basebackup.h"
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#include "streamutil.h"
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#define atooid(x) ((Oid) strtoul((x), NULL, 10))
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typedef struct TablespaceListCell
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{
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struct TablespaceListCell *next;
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char old_dir[MAXPGPATH];
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char new_dir[MAXPGPATH];
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} TablespaceListCell;
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typedef struct TablespaceList
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{
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TablespaceListCell *head;
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TablespaceListCell *tail;
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} TablespaceList;
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/*
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* pg_xlog has been renamed to pg_wal in version 10. This version number
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* should be compared with PQserverVersion().
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*/
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#define MINIMUM_VERSION_FOR_PG_WAL 100000
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/*
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* Temporary replication slots are supported from version 10.
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*/
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#define MINIMUM_VERSION_FOR_TEMP_SLOTS 100000
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/*
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* Different ways to include WAL
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*/
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typedef enum
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{
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NO_WAL,
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FETCH_WAL,
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STREAM_WAL
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} IncludeWal;
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/* Global options */
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static char *basedir = NULL;
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static TablespaceList tablespace_dirs = {NULL, NULL};
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static char *xlog_dir = "";
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static char format = 'p'; /* p(lain)/t(ar) */
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static char *label = "pg_basebackup base backup";
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static bool noclean = false;
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static bool showprogress = false;
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static int verbose = 0;
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static int compresslevel = 0;
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static IncludeWal includewal = STREAM_WAL;
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static bool fastcheckpoint = false;
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static bool writerecoveryconf = false;
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static bool do_sync = true;
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static int standby_message_timeout = 10 * 1000; /* 10 sec = default */
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static pg_time_t last_progress_report = 0;
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static int32 maxrate = 0; /* no limit by default */
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static char *replication_slot = NULL;
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static bool temp_replication_slot = true;
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static bool success = false;
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static bool made_new_pgdata = false;
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static bool found_existing_pgdata = false;
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static bool made_new_xlogdir = false;
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static bool found_existing_xlogdir = false;
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static bool made_tablespace_dirs = false;
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static bool found_tablespace_dirs = false;
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/* Progress counters */
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static uint64 totalsize;
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static uint64 totaldone;
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static int tablespacecount;
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/* Pipe to communicate with background wal receiver process */
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#ifndef WIN32
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static int bgpipe[2] = {-1, -1};
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#endif
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/* Handle to child process */
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static pid_t bgchild = -1;
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static bool in_log_streamer = false;
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/* End position for xlog streaming, empty string if unknown yet */
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static XLogRecPtr xlogendptr;
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#ifndef WIN32
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static int has_xlogendptr = 0;
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#else
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static volatile LONG has_xlogendptr = 0;
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#endif
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/* Contents of recovery.conf to be generated */
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static PQExpBuffer recoveryconfcontents = NULL;
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/* Function headers */
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static void usage(void);
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static void disconnect_and_exit(int code);
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static void verify_dir_is_empty_or_create(char *dirname, bool *created, bool *found);
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static void progress_report(int tablespacenum, const char *filename, bool force);
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static void ReceiveTarFile(PGconn *conn, PGresult *res, int rownum);
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static void ReceiveAndUnpackTarFile(PGconn *conn, PGresult *res, int rownum);
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static void GenerateRecoveryConf(PGconn *conn);
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static void WriteRecoveryConf(void);
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static void BaseBackup(void);
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static bool reached_end_position(XLogRecPtr segendpos, uint32 timeline,
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bool segment_finished);
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static const char *get_tablespace_mapping(const char *dir);
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static void tablespace_list_append(const char *arg);
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static void
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cleanup_directories_atexit(void)
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{
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if (success || in_log_streamer)
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return;
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if (!noclean)
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{
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if (made_new_pgdata)
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{
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fprintf(stderr, _("%s: removing data directory \"%s\"\n"),
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progname, basedir);
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if (!rmtree(basedir, true))
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fprintf(stderr, _("%s: failed to remove data directory\n"),
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progname);
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}
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else if (found_existing_pgdata)
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{
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fprintf(stderr,
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_("%s: removing contents of data directory \"%s\"\n"),
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progname, basedir);
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if (!rmtree(basedir, false))
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fprintf(stderr, _("%s: failed to remove contents of data directory\n"),
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progname);
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}
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if (made_new_xlogdir)
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{
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fprintf(stderr, _("%s: removing transaction log directory \"%s\"\n"),
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progname, xlog_dir);
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if (!rmtree(xlog_dir, true))
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fprintf(stderr, _("%s: failed to remove transaction log directory\n"),
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progname);
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}
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else if (found_existing_xlogdir)
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{
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fprintf(stderr,
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_("%s: removing contents of transaction log directory \"%s\"\n"),
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progname, xlog_dir);
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if (!rmtree(xlog_dir, false))
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fprintf(stderr, _("%s: failed to remove contents of transaction log directory\n"),
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progname);
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}
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}
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else
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{
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if (made_new_pgdata || found_existing_pgdata)
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fprintf(stderr,
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_("%s: data directory \"%s\" not removed at user's request\n"),
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progname, basedir);
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if (made_new_xlogdir || found_existing_xlogdir)
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fprintf(stderr,
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_("%s: transaction log directory \"%s\" not removed at user's request\n"),
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progname, xlog_dir);
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}
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if (made_tablespace_dirs || found_tablespace_dirs)
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fprintf(stderr,
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_("%s: changes to tablespace directories will not be undone\n"),
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progname);
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}
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static void
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disconnect_and_exit(int code)
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{
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if (conn != NULL)
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PQfinish(conn);
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#ifndef WIN32
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/*
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* On windows, our background thread dies along with the process. But on
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* Unix, if we have started a subprocess, we want to kill it off so it
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* doesn't remain running trying to stream data.
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*/
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if (bgchild > 0)
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kill(bgchild, SIGTERM);
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#endif
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exit(code);
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}
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/*
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* Split argument into old_dir and new_dir and append to tablespace mapping
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* list.
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*/
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static void
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tablespace_list_append(const char *arg)
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{
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TablespaceListCell *cell = (TablespaceListCell *) pg_malloc0(sizeof(TablespaceListCell));
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char *dst;
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char *dst_ptr;
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const char *arg_ptr;
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dst_ptr = dst = cell->old_dir;
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for (arg_ptr = arg; *arg_ptr; arg_ptr++)
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{
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if (dst_ptr - dst >= MAXPGPATH)
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{
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fprintf(stderr, _("%s: directory name too long\n"), progname);
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exit(1);
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}
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if (*arg_ptr == '\\' && *(arg_ptr + 1) == '=')
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; /* skip backslash escaping = */
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else if (*arg_ptr == '=' && (arg_ptr == arg || *(arg_ptr - 1) != '\\'))
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{
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if (*cell->new_dir)
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{
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fprintf(stderr, _("%s: multiple \"=\" signs in tablespace mapping\n"), progname);
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exit(1);
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}
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else
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dst = dst_ptr = cell->new_dir;
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}
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else
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*dst_ptr++ = *arg_ptr;
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}
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if (!*cell->old_dir || !*cell->new_dir)
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{
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fprintf(stderr,
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_("%s: invalid tablespace mapping format \"%s\", must be \"OLDDIR=NEWDIR\"\n"),
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progname, arg);
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exit(1);
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}
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/*
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* This check isn't absolutely necessary. But all tablespaces are created
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* with absolute directories, so specifying a non-absolute path here would
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* just never match, possibly confusing users. It's also good to be
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* consistent with the new_dir check.
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*/
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if (!is_absolute_path(cell->old_dir))
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{
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fprintf(stderr, _("%s: old directory is not an absolute path in tablespace mapping: %s\n"),
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progname, cell->old_dir);
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exit(1);
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}
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if (!is_absolute_path(cell->new_dir))
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{
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fprintf(stderr, _("%s: new directory is not an absolute path in tablespace mapping: %s\n"),
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progname, cell->new_dir);
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exit(1);
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}
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canonicalize_path(cell->old_dir);
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canonicalize_path(cell->new_dir);
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if (tablespace_dirs.tail)
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tablespace_dirs.tail->next = cell;
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else
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tablespace_dirs.head = cell;
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tablespace_dirs.tail = cell;
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}
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#ifdef HAVE_LIBZ
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static const char *
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get_gz_error(gzFile gzf)
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{
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int errnum;
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const char *errmsg;
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errmsg = gzerror(gzf, &errnum);
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if (errnum == Z_ERRNO)
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return strerror(errno);
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else
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return errmsg;
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}
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#endif
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static void
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usage(void)
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{
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printf(_("%s takes a base backup of a running PostgreSQL server.\n\n"),
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progname);
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printf(_("Usage:\n"));
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printf(_(" %s [OPTION]...\n"), progname);
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printf(_("\nOptions controlling the output:\n"));
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printf(_(" -D, --pgdata=DIRECTORY receive base backup into directory\n"));
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printf(_(" -F, --format=p|t output format (plain (default), tar)\n"));
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printf(_(" -r, --max-rate=RATE maximum transfer rate to transfer data directory\n"
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" (in kB/s, or use suffix \"k\" or \"M\")\n"));
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printf(_(" -R, --write-recovery-conf\n"
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" write recovery.conf for replication\n"));
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printf(_(" -S, --slot=SLOTNAME replication slot to use\n"));
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printf(_(" --no-slot prevent creation of temporary replication slot\n"));
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printf(_(" -T, --tablespace-mapping=OLDDIR=NEWDIR\n"
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" relocate tablespace in OLDDIR to NEWDIR\n"));
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printf(_(" -X, --wal-method=none|fetch|stream\n"
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" include required WAL files with specified method\n"));
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printf(_(" --waldir=WALDIR location for the transaction log directory\n"));
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printf(_(" -z, --gzip compress tar output\n"));
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printf(_(" -Z, --compress=0-9 compress tar output with given compression level\n"));
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printf(_("\nGeneral options:\n"));
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printf(_(" -c, --checkpoint=fast|spread\n"
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" set fast or spread checkpointing\n"));
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printf(_(" -l, --label=LABEL set backup label\n"));
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printf(_(" -n, --no-clean do not clean up after errors\n"));
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printf(_(" -N, --no-sync do not wait for changes to be written safely to disk\n"));
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printf(_(" -P, --progress show progress information\n"));
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printf(_(" -v, --verbose output verbose messages\n"));
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printf(_(" -V, --version output version information, then exit\n"));
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printf(_(" -?, --help show this help, then exit\n"));
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printf(_("\nConnection options:\n"));
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printf(_(" -d, --dbname=CONNSTR connection string\n"));
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printf(_(" -h, --host=HOSTNAME database server host or socket directory\n"));
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printf(_(" -p, --port=PORT database server port number\n"));
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printf(_(" -s, --status-interval=INTERVAL\n"
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" time between status packets sent to server (in seconds)\n"));
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printf(_(" -U, --username=NAME connect as specified database user\n"));
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printf(_(" -w, --no-password never prompt for password\n"));
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printf(_(" -W, --password force password prompt (should happen automatically)\n"));
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printf(_("\nReport bugs to <pgsql-bugs@postgresql.org>.\n"));
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}
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/*
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* Called in the background process every time data is received.
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* On Unix, we check to see if there is any data on our pipe
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* (which would mean we have a stop position), and if it is, check if
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* it is time to stop.
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* On Windows, we are in a single process, so we can just check if it's
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* time to stop.
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*/
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static bool
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reached_end_position(XLogRecPtr segendpos, uint32 timeline,
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bool segment_finished)
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{
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if (!has_xlogendptr)
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{
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#ifndef WIN32
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fd_set fds;
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struct timeval tv;
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int r;
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/*
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* Don't have the end pointer yet - check our pipe to see if it has
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* been sent yet.
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*/
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FD_ZERO(&fds);
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FD_SET(bgpipe[0], &fds);
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MemSet(&tv, 0, sizeof(tv));
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r = select(bgpipe[0] + 1, &fds, NULL, NULL, &tv);
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if (r == 1)
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{
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char xlogend[64];
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uint32 hi,
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lo;
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MemSet(xlogend, 0, sizeof(xlogend));
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r = read(bgpipe[0], xlogend, sizeof(xlogend) - 1);
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if (r < 0)
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{
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fprintf(stderr, _("%s: could not read from ready pipe: %s\n"),
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progname, strerror(errno));
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exit(1);
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}
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if (sscanf(xlogend, "%X/%X", &hi, &lo) != 2)
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{
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fprintf(stderr,
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_("%s: could not parse transaction log location \"%s\"\n"),
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progname, xlogend);
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exit(1);
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}
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xlogendptr = ((uint64) hi) << 32 | lo;
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has_xlogendptr = 1;
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/*
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* Fall through to check if we've reached the point further
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* already.
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*/
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}
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else
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{
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/*
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* No data received on the pipe means we don't know the end
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* position yet - so just say it's not time to stop yet.
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*/
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return false;
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}
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#else
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/*
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* On win32, has_xlogendptr is set by the main thread, so if it's not
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* set here, we just go back and wait until it shows up.
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*/
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return false;
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#endif
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}
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/*
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* At this point we have an end pointer, so compare it to the current
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* position to figure out if it's time to stop.
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*/
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if (segendpos >= xlogendptr)
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return true;
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|
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/*
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* Have end pointer, but haven't reached it yet - so tell the caller to
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* keep streaming.
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*/
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return false;
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}
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|
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typedef struct
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{
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PGconn *bgconn;
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XLogRecPtr startptr;
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char xlog[MAXPGPATH]; /* directory or tarfile depending on mode */
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char *sysidentifier;
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int timeline;
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bool temp_slot;
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} logstreamer_param;
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|
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static int
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LogStreamerMain(logstreamer_param *param)
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{
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StreamCtl stream;
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in_log_streamer = true;
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MemSet(&stream, 0, sizeof(stream));
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stream.startpos = param->startptr;
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stream.timeline = param->timeline;
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stream.sysidentifier = param->sysidentifier;
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stream.stream_stop = reached_end_position;
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stream.standby_message_timeout = standby_message_timeout;
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stream.synchronous = false;
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stream.do_sync = do_sync;
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stream.mark_done = true;
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stream.partial_suffix = NULL;
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stream.replication_slot = replication_slot;
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stream.temp_slot = param->temp_slot;
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if (stream.temp_slot && !stream.replication_slot)
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stream.replication_slot = psprintf("pg_basebackup_%d", (int) getpid());
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|
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if (format == 'p')
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stream.walmethod = CreateWalDirectoryMethod(param->xlog, 0, do_sync);
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else
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stream.walmethod = CreateWalTarMethod(param->xlog, compresslevel, do_sync);
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|
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if (!ReceiveXlogStream(param->bgconn, &stream))
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|
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/*
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* Any errors will already have been reported in the function process,
|
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* but we need to tell the parent that we didn't shutdown in a nice
|
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* way.
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*/
|
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return 1;
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|
|
if (!stream.walmethod->finish())
|
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{
|
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fprintf(stderr,
|
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_("%s: could not finish writing WAL files: %s\n"),
|
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progname, strerror(errno));
|
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return 1;
|
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}
|
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|
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PQfinish(param->bgconn);
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|
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if (format == 'p')
|
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FreeWalDirectoryMethod();
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else
|
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FreeWalTarMethod();
|
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pg_free(stream.walmethod);
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|
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return 0;
|
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}
|
|
|
|
/*
|
|
* Initiate background process for receiving xlog during the backup.
|
|
* The background stream will use its own database connection so we can
|
|
* stream the logfile in parallel with the backups.
|
|
*/
|
|
static void
|
|
StartLogStreamer(char *startpos, uint32 timeline, char *sysidentifier)
|
|
{
|
|
logstreamer_param *param;
|
|
uint32 hi,
|
|
lo;
|
|
char statusdir[MAXPGPATH];
|
|
|
|
param = pg_malloc0(sizeof(logstreamer_param));
|
|
param->timeline = timeline;
|
|
param->sysidentifier = sysidentifier;
|
|
|
|
/* Convert the starting position */
|
|
if (sscanf(startpos, "%X/%X", &hi, &lo) != 2)
|
|
{
|
|
fprintf(stderr,
|
|
_("%s: could not parse transaction log location \"%s\"\n"),
|
|
progname, startpos);
|
|
disconnect_and_exit(1);
|
|
}
|
|
param->startptr = ((uint64) hi) << 32 | lo;
|
|
/* Round off to even segment position */
|
|
param->startptr -= param->startptr % XLOG_SEG_SIZE;
|
|
|
|
#ifndef WIN32
|
|
/* Create our background pipe */
|
|
if (pipe(bgpipe) < 0)
|
|
{
|
|
fprintf(stderr,
|
|
_("%s: could not create pipe for background process: %s\n"),
|
|
progname, strerror(errno));
|
|
disconnect_and_exit(1);
|
|
}
|
|
#endif
|
|
|
|
/* Get a second connection */
|
|
param->bgconn = GetConnection();
|
|
if (!param->bgconn)
|
|
/* Error message already written in GetConnection() */
|
|
exit(1);
|
|
|
|
/* In post-10 cluster, pg_xlog has been renamed to pg_wal */
|
|
snprintf(param->xlog, sizeof(param->xlog), "%s/%s",
|
|
basedir,
|
|
PQserverVersion(conn) < MINIMUM_VERSION_FOR_PG_WAL ?
|
|
"pg_xlog" : "pg_wal");
|
|
|
|
/* Temporary replication slots are only supported in 10 and newer */
|
|
if (PQserverVersion(conn) < MINIMUM_VERSION_FOR_TEMP_SLOTS)
|
|
param->temp_slot = false;
|
|
else
|
|
param->temp_slot = temp_replication_slot;
|
|
|
|
if (format == 'p')
|
|
{
|
|
/*
|
|
* Create pg_wal/archive_status or pg_xlog/archive_status (and thus
|
|
* pg_wal or pg_xlog) depending on the target server so we can write to
|
|
* basedir/pg_wal or basedir/pg_xlog as the directory entry in the tar
|
|
* file may arrive later.
|
|
*/
|
|
snprintf(statusdir, sizeof(statusdir), "%s/%s/archive_status",
|
|
basedir,
|
|
PQserverVersion(conn) < MINIMUM_VERSION_FOR_PG_WAL ?
|
|
"pg_xlog" : "pg_wal");
|
|
|
|
if (pg_mkdir_p(statusdir, S_IRWXU) != 0 && errno != EEXIST)
|
|
{
|
|
fprintf(stderr,
|
|
_("%s: could not create directory \"%s\": %s\n"),
|
|
progname, statusdir, strerror(errno));
|
|
disconnect_and_exit(1);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Start a child process and tell it to start streaming. On Unix, this is
|
|
* a fork(). On Windows, we create a thread.
|
|
*/
|
|
#ifndef WIN32
|
|
bgchild = fork();
|
|
if (bgchild == 0)
|
|
{
|
|
/* in child process */
|
|
exit(LogStreamerMain(param));
|
|
}
|
|
else if (bgchild < 0)
|
|
{
|
|
fprintf(stderr, _("%s: could not create background process: %s\n"),
|
|
progname, strerror(errno));
|
|
disconnect_and_exit(1);
|
|
}
|
|
|
|
/*
|
|
* Else we are in the parent process and all is well.
|
|
*/
|
|
#else /* WIN32 */
|
|
bgchild = _beginthreadex(NULL, 0, (void *) LogStreamerMain, param, 0, NULL);
|
|
if (bgchild == 0)
|
|
{
|
|
fprintf(stderr, _("%s: could not create background thread: %s\n"),
|
|
progname, strerror(errno));
|
|
disconnect_and_exit(1);
|
|
}
|
|
#endif
|
|
}
|
|
|
|
/*
|
|
* Verify that the given directory exists and is empty. If it does not
|
|
* exist, it is created. If it exists but is not empty, an error will
|
|
* be give and the process ended.
|
|
*/
|
|
static void
|
|
verify_dir_is_empty_or_create(char *dirname, bool *created, bool *found)
|
|
{
|
|
switch (pg_check_dir(dirname))
|
|
{
|
|
case 0:
|
|
|
|
/*
|
|
* Does not exist, so create
|
|
*/
|
|
if (pg_mkdir_p(dirname, S_IRWXU) == -1)
|
|
{
|
|
fprintf(stderr,
|
|
_("%s: could not create directory \"%s\": %s\n"),
|
|
progname, dirname, strerror(errno));
|
|
disconnect_and_exit(1);
|
|
}
|
|
if (created)
|
|
*created = true;
|
|
return;
|
|
case 1:
|
|
|
|
/*
|
|
* Exists, empty
|
|
*/
|
|
if (found)
|
|
*found = true;
|
|
return;
|
|
case 2:
|
|
case 3:
|
|
case 4:
|
|
|
|
/*
|
|
* Exists, not empty
|
|
*/
|
|
fprintf(stderr,
|
|
_("%s: directory \"%s\" exists but is not empty\n"),
|
|
progname, dirname);
|
|
disconnect_and_exit(1);
|
|
case -1:
|
|
|
|
/*
|
|
* Access problem
|
|
*/
|
|
fprintf(stderr, _("%s: could not access directory \"%s\": %s\n"),
|
|
progname, dirname, strerror(errno));
|
|
disconnect_and_exit(1);
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
* Print a progress report based on the global variables. If verbose output
|
|
* is enabled, also print the current file name.
|
|
*
|
|
* Progress report is written at maximum once per second, unless the
|
|
* force parameter is set to true.
|
|
*/
|
|
static void
|
|
progress_report(int tablespacenum, const char *filename, bool force)
|
|
{
|
|
int percent;
|
|
char totaldone_str[32];
|
|
char totalsize_str[32];
|
|
pg_time_t now;
|
|
|
|
if (!showprogress)
|
|
return;
|
|
|
|
now = time(NULL);
|
|
if (now == last_progress_report && !force)
|
|
return; /* Max once per second */
|
|
|
|
last_progress_report = now;
|
|
percent = totalsize ? (int) ((totaldone / 1024) * 100 / totalsize) : 0;
|
|
|
|
/*
|
|
* Avoid overflowing past 100% or the full size. This may make the total
|
|
* size number change as we approach the end of the backup (the estimate
|
|
* will always be wrong if WAL is included), but that's better than having
|
|
* the done column be bigger than the total.
|
|
*/
|
|
if (percent > 100)
|
|
percent = 100;
|
|
if (totaldone / 1024 > totalsize)
|
|
totalsize = totaldone / 1024;
|
|
|
|
/*
|
|
* Separate step to keep platform-dependent format code out of
|
|
* translatable strings. And we only test for INT64_FORMAT availability
|
|
* in snprintf, not fprintf.
|
|
*/
|
|
snprintf(totaldone_str, sizeof(totaldone_str), INT64_FORMAT,
|
|
totaldone / 1024);
|
|
snprintf(totalsize_str, sizeof(totalsize_str), INT64_FORMAT, totalsize);
|
|
|
|
#define VERBOSE_FILENAME_LENGTH 35
|
|
if (verbose)
|
|
{
|
|
if (!filename)
|
|
|
|
/*
|
|
* No filename given, so clear the status line (used for last
|
|
* call)
|
|
*/
|
|
fprintf(stderr,
|
|
ngettext("%*s/%s kB (100%%), %d/%d tablespace %*s",
|
|
"%*s/%s kB (100%%), %d/%d tablespaces %*s",
|
|
tablespacecount),
|
|
(int) strlen(totalsize_str),
|
|
totaldone_str, totalsize_str,
|
|
tablespacenum, tablespacecount,
|
|
VERBOSE_FILENAME_LENGTH + 5, "");
|
|
else
|
|
{
|
|
bool truncate = (strlen(filename) > VERBOSE_FILENAME_LENGTH);
|
|
|
|
fprintf(stderr,
|
|
ngettext("%*s/%s kB (%d%%), %d/%d tablespace (%s%-*.*s)",
|
|
"%*s/%s kB (%d%%), %d/%d tablespaces (%s%-*.*s)",
|
|
tablespacecount),
|
|
(int) strlen(totalsize_str),
|
|
totaldone_str, totalsize_str, percent,
|
|
tablespacenum, tablespacecount,
|
|
/* Prefix with "..." if we do leading truncation */
|
|
truncate ? "..." : "",
|
|
truncate ? VERBOSE_FILENAME_LENGTH - 3 : VERBOSE_FILENAME_LENGTH,
|
|
truncate ? VERBOSE_FILENAME_LENGTH - 3 : VERBOSE_FILENAME_LENGTH,
|
|
/* Truncate filename at beginning if it's too long */
|
|
truncate ? filename + strlen(filename) - VERBOSE_FILENAME_LENGTH + 3 : filename);
|
|
}
|
|
}
|
|
else
|
|
fprintf(stderr,
|
|
ngettext("%*s/%s kB (%d%%), %d/%d tablespace",
|
|
"%*s/%s kB (%d%%), %d/%d tablespaces",
|
|
tablespacecount),
|
|
(int) strlen(totalsize_str),
|
|
totaldone_str, totalsize_str, percent,
|
|
tablespacenum, tablespacecount);
|
|
|
|
fprintf(stderr, "\r");
|
|
}
|
|
|
|
static int32
|
|
parse_max_rate(char *src)
|
|
{
|
|
double result;
|
|
char *after_num;
|
|
char *suffix = NULL;
|
|
|
|
errno = 0;
|
|
result = strtod(src, &after_num);
|
|
if (src == after_num)
|
|
{
|
|
fprintf(stderr,
|
|
_("%s: transfer rate \"%s\" is not a valid value\n"),
|
|
progname, src);
|
|
exit(1);
|
|
}
|
|
if (errno != 0)
|
|
{
|
|
fprintf(stderr,
|
|
_("%s: invalid transfer rate \"%s\": %s\n"),
|
|
progname, src, strerror(errno));
|
|
exit(1);
|
|
}
|
|
|
|
if (result <= 0)
|
|
{
|
|
/*
|
|
* Reject obviously wrong values here.
|
|
*/
|
|
fprintf(stderr, _("%s: transfer rate must be greater than zero\n"),
|
|
progname);
|
|
exit(1);
|
|
}
|
|
|
|
/*
|
|
* Evaluate suffix, after skipping over possible whitespace. Lack of
|
|
* suffix means kilobytes.
|
|
*/
|
|
while (*after_num != '\0' && isspace((unsigned char) *after_num))
|
|
after_num++;
|
|
|
|
if (*after_num != '\0')
|
|
{
|
|
suffix = after_num;
|
|
if (*after_num == 'k')
|
|
{
|
|
/* kilobyte is the expected unit. */
|
|
after_num++;
|
|
}
|
|
else if (*after_num == 'M')
|
|
{
|
|
after_num++;
|
|
result *= 1024.0;
|
|
}
|
|
}
|
|
|
|
/* The rest can only consist of white space. */
|
|
while (*after_num != '\0' && isspace((unsigned char) *after_num))
|
|
after_num++;
|
|
|
|
if (*after_num != '\0')
|
|
{
|
|
fprintf(stderr,
|
|
_("%s: invalid --max-rate unit: \"%s\"\n"),
|
|
progname, suffix);
|
|
exit(1);
|
|
}
|
|
|
|
/* Valid integer? */
|
|
if ((uint64) result != (uint64) ((uint32) result))
|
|
{
|
|
fprintf(stderr,
|
|
_("%s: transfer rate \"%s\" exceeds integer range\n"),
|
|
progname, src);
|
|
exit(1);
|
|
}
|
|
|
|
/*
|
|
* The range is checked on the server side too, but avoid the server
|
|
* connection if a nonsensical value was passed.
|
|
*/
|
|
if (result < MAX_RATE_LOWER || result > MAX_RATE_UPPER)
|
|
{
|
|
fprintf(stderr,
|
|
_("%s: transfer rate \"%s\" is out of range\n"),
|
|
progname, src);
|
|
exit(1);
|
|
}
|
|
|
|
return (int32) result;
|
|
}
|
|
|
|
/*
|
|
* Write a piece of tar data
|
|
*/
|
|
static void
|
|
writeTarData(
|
|
#ifdef HAVE_LIBZ
|
|
gzFile ztarfile,
|
|
#endif
|
|
FILE *tarfile, char *buf, int r, char *current_file)
|
|
{
|
|
#ifdef HAVE_LIBZ
|
|
if (ztarfile != NULL)
|
|
{
|
|
if (gzwrite(ztarfile, buf, r) != r)
|
|
{
|
|
fprintf(stderr,
|
|
_("%s: could not write to compressed file \"%s\": %s\n"),
|
|
progname, current_file, get_gz_error(ztarfile));
|
|
disconnect_and_exit(1);
|
|
}
|
|
}
|
|
else
|
|
#endif
|
|
{
|
|
if (fwrite(buf, r, 1, tarfile) != 1)
|
|
{
|
|
fprintf(stderr, _("%s: could not write to file \"%s\": %s\n"),
|
|
progname, current_file, strerror(errno));
|
|
disconnect_and_exit(1);
|
|
}
|
|
}
|
|
}
|
|
|
|
#ifdef HAVE_LIBZ
|
|
#define WRITE_TAR_DATA(buf, sz) writeTarData(ztarfile, tarfile, buf, sz, filename)
|
|
#else
|
|
#define WRITE_TAR_DATA(buf, sz) writeTarData(tarfile, buf, sz, filename)
|
|
#endif
|
|
|
|
/*
|
|
* Receive a tar format file from the connection to the server, and write
|
|
* the data from this file directly into a tar file. If compression is
|
|
* enabled, the data will be compressed while written to the file.
|
|
*
|
|
* The file will be named base.tar[.gz] if it's for the main data directory
|
|
* or <tablespaceoid>.tar[.gz] if it's for another tablespace.
|
|
*
|
|
* No attempt to inspect or validate the contents of the file is done.
|
|
*/
|
|
static void
|
|
ReceiveTarFile(PGconn *conn, PGresult *res, int rownum)
|
|
{
|
|
char filename[MAXPGPATH];
|
|
char *copybuf = NULL;
|
|
FILE *tarfile = NULL;
|
|
char tarhdr[512];
|
|
bool basetablespace = PQgetisnull(res, rownum, 0);
|
|
bool in_tarhdr = true;
|
|
bool skip_file = false;
|
|
size_t tarhdrsz = 0;
|
|
pgoff_t filesz = 0;
|
|
|
|
#ifdef HAVE_LIBZ
|
|
gzFile ztarfile = NULL;
|
|
#endif
|
|
|
|
if (basetablespace)
|
|
{
|
|
/*
|
|
* Base tablespaces
|
|
*/
|
|
if (strcmp(basedir, "-") == 0)
|
|
{
|
|
#ifdef HAVE_LIBZ
|
|
if (compresslevel != 0)
|
|
{
|
|
ztarfile = gzdopen(dup(fileno(stdout)), "wb");
|
|
if (gzsetparams(ztarfile, compresslevel,
|
|
Z_DEFAULT_STRATEGY) != Z_OK)
|
|
{
|
|
fprintf(stderr,
|
|
_("%s: could not set compression level %d: %s\n"),
|
|
progname, compresslevel, get_gz_error(ztarfile));
|
|
disconnect_and_exit(1);
|
|
}
|
|
}
|
|
else
|
|
#endif
|
|
tarfile = stdout;
|
|
strcpy(filename, "-");
|
|
}
|
|
else
|
|
{
|
|
#ifdef HAVE_LIBZ
|
|
if (compresslevel != 0)
|
|
{
|
|
snprintf(filename, sizeof(filename), "%s/base.tar.gz", basedir);
|
|
ztarfile = gzopen(filename, "wb");
|
|
if (gzsetparams(ztarfile, compresslevel,
|
|
Z_DEFAULT_STRATEGY) != Z_OK)
|
|
{
|
|
fprintf(stderr,
|
|
_("%s: could not set compression level %d: %s\n"),
|
|
progname, compresslevel, get_gz_error(ztarfile));
|
|
disconnect_and_exit(1);
|
|
}
|
|
}
|
|
else
|
|
#endif
|
|
{
|
|
snprintf(filename, sizeof(filename), "%s/base.tar", basedir);
|
|
tarfile = fopen(filename, "wb");
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/*
|
|
* Specific tablespace
|
|
*/
|
|
#ifdef HAVE_LIBZ
|
|
if (compresslevel != 0)
|
|
{
|
|
snprintf(filename, sizeof(filename), "%s/%s.tar.gz", basedir,
|
|
PQgetvalue(res, rownum, 0));
|
|
ztarfile = gzopen(filename, "wb");
|
|
if (gzsetparams(ztarfile, compresslevel,
|
|
Z_DEFAULT_STRATEGY) != Z_OK)
|
|
{
|
|
fprintf(stderr,
|
|
_("%s: could not set compression level %d: %s\n"),
|
|
progname, compresslevel, get_gz_error(ztarfile));
|
|
disconnect_and_exit(1);
|
|
}
|
|
}
|
|
else
|
|
#endif
|
|
{
|
|
snprintf(filename, sizeof(filename), "%s/%s.tar", basedir,
|
|
PQgetvalue(res, rownum, 0));
|
|
tarfile = fopen(filename, "wb");
|
|
}
|
|
}
|
|
|
|
#ifdef HAVE_LIBZ
|
|
if (compresslevel != 0)
|
|
{
|
|
if (!ztarfile)
|
|
{
|
|
/* Compression is in use */
|
|
fprintf(stderr,
|
|
_("%s: could not create compressed file \"%s\": %s\n"),
|
|
progname, filename, get_gz_error(ztarfile));
|
|
disconnect_and_exit(1);
|
|
}
|
|
}
|
|
else
|
|
#endif
|
|
{
|
|
/* Either no zlib support, or zlib support but compresslevel = 0 */
|
|
if (!tarfile)
|
|
{
|
|
fprintf(stderr, _("%s: could not create file \"%s\": %s\n"),
|
|
progname, filename, strerror(errno));
|
|
disconnect_and_exit(1);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Get the COPY data stream
|
|
*/
|
|
res = PQgetResult(conn);
|
|
if (PQresultStatus(res) != PGRES_COPY_OUT)
|
|
{
|
|
fprintf(stderr, _("%s: could not get COPY data stream: %s"),
|
|
progname, PQerrorMessage(conn));
|
|
disconnect_and_exit(1);
|
|
}
|
|
|
|
while (1)
|
|
{
|
|
int r;
|
|
|
|
if (copybuf != NULL)
|
|
{
|
|
PQfreemem(copybuf);
|
|
copybuf = NULL;
|
|
}
|
|
|
|
r = PQgetCopyData(conn, ©buf, 0);
|
|
if (r == -1)
|
|
{
|
|
/*
|
|
* End of chunk. If requested, and this is the base tablespace,
|
|
* write recovery.conf into the tarfile. When done, close the file
|
|
* (but not stdout).
|
|
*
|
|
* Also, write two completely empty blocks at the end of the tar
|
|
* file, as required by some tar programs.
|
|
*/
|
|
char zerobuf[1024];
|
|
|
|
MemSet(zerobuf, 0, sizeof(zerobuf));
|
|
|
|
if (basetablespace && writerecoveryconf)
|
|
{
|
|
char header[512];
|
|
int padding;
|
|
|
|
tarCreateHeader(header, "recovery.conf", NULL,
|
|
recoveryconfcontents->len,
|
|
0600, 04000, 02000,
|
|
time(NULL));
|
|
|
|
padding = ((recoveryconfcontents->len + 511) & ~511) - recoveryconfcontents->len;
|
|
|
|
WRITE_TAR_DATA(header, sizeof(header));
|
|
WRITE_TAR_DATA(recoveryconfcontents->data, recoveryconfcontents->len);
|
|
if (padding)
|
|
WRITE_TAR_DATA(zerobuf, padding);
|
|
}
|
|
|
|
/* 2 * 512 bytes empty data at end of file */
|
|
WRITE_TAR_DATA(zerobuf, sizeof(zerobuf));
|
|
|
|
#ifdef HAVE_LIBZ
|
|
if (ztarfile != NULL)
|
|
{
|
|
if (gzclose(ztarfile) != 0)
|
|
{
|
|
fprintf(stderr,
|
|
_("%s: could not close compressed file \"%s\": %s\n"),
|
|
progname, filename, get_gz_error(ztarfile));
|
|
disconnect_and_exit(1);
|
|
}
|
|
}
|
|
else
|
|
#endif
|
|
{
|
|
if (strcmp(basedir, "-") != 0)
|
|
{
|
|
if (fclose(tarfile) != 0)
|
|
{
|
|
fprintf(stderr,
|
|
_("%s: could not close file \"%s\": %s\n"),
|
|
progname, filename, strerror(errno));
|
|
disconnect_and_exit(1);
|
|
}
|
|
}
|
|
}
|
|
|
|
break;
|
|
}
|
|
else if (r == -2)
|
|
{
|
|
fprintf(stderr, _("%s: could not read COPY data: %s"),
|
|
progname, PQerrorMessage(conn));
|
|
disconnect_and_exit(1);
|
|
}
|
|
|
|
if (!writerecoveryconf || !basetablespace)
|
|
{
|
|
/*
|
|
* When not writing recovery.conf, or when not working on the base
|
|
* tablespace, we never have to look for an existing recovery.conf
|
|
* file in the stream.
|
|
*/
|
|
WRITE_TAR_DATA(copybuf, r);
|
|
}
|
|
else
|
|
{
|
|
/*
|
|
* Look for a recovery.conf in the existing tar stream. If it's
|
|
* there, we must skip it so we can later overwrite it with our
|
|
* own version of the file.
|
|
*
|
|
* To do this, we have to process the individual files inside the
|
|
* TAR stream. The stream consists of a header and zero or more
|
|
* chunks, all 512 bytes long. The stream from the server is
|
|
* broken up into smaller pieces, so we have to track the size of
|
|
* the files to find the next header structure.
|
|
*/
|
|
int rr = r;
|
|
int pos = 0;
|
|
|
|
while (rr > 0)
|
|
{
|
|
if (in_tarhdr)
|
|
{
|
|
/*
|
|
* We're currently reading a header structure inside the
|
|
* TAR stream, i.e. the file metadata.
|
|
*/
|
|
if (tarhdrsz < 512)
|
|
{
|
|
/*
|
|
* Copy the header structure into tarhdr in case the
|
|
* header is not aligned to 512 bytes or it's not
|
|
* returned in whole by the last PQgetCopyData call.
|
|
*/
|
|
int hdrleft;
|
|
int bytes2copy;
|
|
|
|
hdrleft = 512 - tarhdrsz;
|
|
bytes2copy = (rr > hdrleft ? hdrleft : rr);
|
|
|
|
memcpy(&tarhdr[tarhdrsz], copybuf + pos, bytes2copy);
|
|
|
|
rr -= bytes2copy;
|
|
pos += bytes2copy;
|
|
tarhdrsz += bytes2copy;
|
|
}
|
|
else
|
|
{
|
|
/*
|
|
* We have the complete header structure in tarhdr,
|
|
* look at the file metadata: - the subsequent file
|
|
* contents have to be skipped if the filename is
|
|
* recovery.conf - find out the size of the file
|
|
* padded to the next multiple of 512
|
|
*/
|
|
int padding;
|
|
|
|
skip_file = (strcmp(&tarhdr[0], "recovery.conf") == 0);
|
|
|
|
filesz = read_tar_number(&tarhdr[124], 12);
|
|
|
|
padding = ((filesz + 511) & ~511) - filesz;
|
|
filesz += padding;
|
|
|
|
/* Next part is the file, not the header */
|
|
in_tarhdr = false;
|
|
|
|
/*
|
|
* If we're not skipping the file, write the tar
|
|
* header unmodified.
|
|
*/
|
|
if (!skip_file)
|
|
WRITE_TAR_DATA(tarhdr, 512);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/*
|
|
* We're processing a file's contents.
|
|
*/
|
|
if (filesz > 0)
|
|
{
|
|
/*
|
|
* We still have data to read (and possibly write).
|
|
*/
|
|
int bytes2write;
|
|
|
|
bytes2write = (filesz > rr ? rr : filesz);
|
|
|
|
if (!skip_file)
|
|
WRITE_TAR_DATA(copybuf + pos, bytes2write);
|
|
|
|
rr -= bytes2write;
|
|
pos += bytes2write;
|
|
filesz -= bytes2write;
|
|
}
|
|
else
|
|
{
|
|
/*
|
|
* No more data in the current file, the next piece of
|
|
* data (if any) will be a new file header structure.
|
|
*/
|
|
in_tarhdr = true;
|
|
skip_file = false;
|
|
tarhdrsz = 0;
|
|
filesz = 0;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
totaldone += r;
|
|
progress_report(rownum, filename, false);
|
|
} /* while (1) */
|
|
progress_report(rownum, filename, true);
|
|
|
|
if (copybuf != NULL)
|
|
PQfreemem(copybuf);
|
|
|
|
/* sync the resulting tar file, errors are not considered fatal */
|
|
if (do_sync && strcmp(basedir, "-") != 0)
|
|
(void) fsync_fname(filename, false, progname);
|
|
}
|
|
|
|
|
|
/*
|
|
* Retrieve tablespace path, either relocated or original depending on whether
|
|
* -T was passed or not.
|
|
*/
|
|
static const char *
|
|
get_tablespace_mapping(const char *dir)
|
|
{
|
|
TablespaceListCell *cell;
|
|
|
|
for (cell = tablespace_dirs.head; cell; cell = cell->next)
|
|
if (strcmp(dir, cell->old_dir) == 0)
|
|
return cell->new_dir;
|
|
|
|
return dir;
|
|
}
|
|
|
|
|
|
/*
|
|
* Receive a tar format stream from the connection to the server, and unpack
|
|
* the contents of it into a directory. Only files, directories and
|
|
* symlinks are supported, no other kinds of special files.
|
|
*
|
|
* If the data is for the main data directory, it will be restored in the
|
|
* specified directory. If it's for another tablespace, it will be restored
|
|
* in the original or mapped directory.
|
|
*/
|
|
static void
|
|
ReceiveAndUnpackTarFile(PGconn *conn, PGresult *res, int rownum)
|
|
{
|
|
char current_path[MAXPGPATH];
|
|
char filename[MAXPGPATH];
|
|
const char *mapped_tblspc_path;
|
|
pgoff_t current_len_left = 0;
|
|
int current_padding = 0;
|
|
bool basetablespace;
|
|
char *copybuf = NULL;
|
|
FILE *file = NULL;
|
|
|
|
basetablespace = PQgetisnull(res, rownum, 0);
|
|
if (basetablespace)
|
|
strlcpy(current_path, basedir, sizeof(current_path));
|
|
else
|
|
strlcpy(current_path,
|
|
get_tablespace_mapping(PQgetvalue(res, rownum, 1)),
|
|
sizeof(current_path));
|
|
|
|
/*
|
|
* Get the COPY data
|
|
*/
|
|
res = PQgetResult(conn);
|
|
if (PQresultStatus(res) != PGRES_COPY_OUT)
|
|
{
|
|
fprintf(stderr, _("%s: could not get COPY data stream: %s"),
|
|
progname, PQerrorMessage(conn));
|
|
disconnect_and_exit(1);
|
|
}
|
|
|
|
while (1)
|
|
{
|
|
int r;
|
|
|
|
if (copybuf != NULL)
|
|
{
|
|
PQfreemem(copybuf);
|
|
copybuf = NULL;
|
|
}
|
|
|
|
r = PQgetCopyData(conn, ©buf, 0);
|
|
|
|
if (r == -1)
|
|
{
|
|
/*
|
|
* End of chunk
|
|
*/
|
|
if (file)
|
|
fclose(file);
|
|
|
|
break;
|
|
}
|
|
else if (r == -2)
|
|
{
|
|
fprintf(stderr, _("%s: could not read COPY data: %s"),
|
|
progname, PQerrorMessage(conn));
|
|
disconnect_and_exit(1);
|
|
}
|
|
|
|
if (file == NULL)
|
|
{
|
|
int filemode;
|
|
|
|
/*
|
|
* No current file, so this must be the header for a new file
|
|
*/
|
|
if (r != 512)
|
|
{
|
|
fprintf(stderr, _("%s: invalid tar block header size: %d\n"),
|
|
progname, r);
|
|
disconnect_and_exit(1);
|
|
}
|
|
totaldone += 512;
|
|
|
|
current_len_left = read_tar_number(©buf[124], 12);
|
|
|
|
/* Set permissions on the file */
|
|
filemode = read_tar_number(©buf[100], 8);
|
|
|
|
/*
|
|
* All files are padded up to 512 bytes
|
|
*/
|
|
current_padding =
|
|
((current_len_left + 511) & ~511) - current_len_left;
|
|
|
|
/*
|
|
* First part of header is zero terminated filename
|
|
*/
|
|
snprintf(filename, sizeof(filename), "%s/%s", current_path,
|
|
copybuf);
|
|
if (filename[strlen(filename) - 1] == '/')
|
|
{
|
|
/*
|
|
* Ends in a slash means directory or symlink to directory
|
|
*/
|
|
if (copybuf[156] == '5')
|
|
{
|
|
/*
|
|
* Directory
|
|
*/
|
|
filename[strlen(filename) - 1] = '\0'; /* Remove trailing slash */
|
|
if (mkdir(filename, S_IRWXU) != 0)
|
|
{
|
|
/*
|
|
* When streaming WAL, pg_wal (or pg_xlog for pre-9.6
|
|
* clusters) will have been created by the wal receiver
|
|
* process. Also, when transaction log directory location
|
|
* was specified, pg_wal (or pg_xlog) has already been
|
|
* created as a symbolic link before starting the actual
|
|
* backup. So just ignore creation failures on related
|
|
* directories.
|
|
*/
|
|
if (!((pg_str_endswith(filename, "/pg_wal") ||
|
|
pg_str_endswith(filename, "/pg_xlog")||
|
|
pg_str_endswith(filename, "/archive_status")) &&
|
|
errno == EEXIST))
|
|
{
|
|
fprintf(stderr,
|
|
_("%s: could not create directory \"%s\": %s\n"),
|
|
progname, filename, strerror(errno));
|
|
disconnect_and_exit(1);
|
|
}
|
|
}
|
|
#ifndef WIN32
|
|
if (chmod(filename, (mode_t) filemode))
|
|
fprintf(stderr,
|
|
_("%s: could not set permissions on directory \"%s\": %s\n"),
|
|
progname, filename, strerror(errno));
|
|
#endif
|
|
}
|
|
else if (copybuf[156] == '2')
|
|
{
|
|
/*
|
|
* Symbolic link
|
|
*
|
|
* It's most likely a link in pg_tblspc directory, to the
|
|
* location of a tablespace. Apply any tablespace mapping
|
|
* given on the command line (--tablespace-mapping). (We
|
|
* blindly apply the mapping without checking that the
|
|
* link really is inside pg_tblspc. We don't expect there
|
|
* to be other symlinks in a data directory, but if there
|
|
* are, you can call it an undocumented feature that you
|
|
* can map them too.)
|
|
*/
|
|
filename[strlen(filename) - 1] = '\0'; /* Remove trailing slash */
|
|
|
|
mapped_tblspc_path = get_tablespace_mapping(©buf[157]);
|
|
if (symlink(mapped_tblspc_path, filename) != 0)
|
|
{
|
|
fprintf(stderr,
|
|
_("%s: could not create symbolic link from \"%s\" to \"%s\": %s\n"),
|
|
progname, filename, mapped_tblspc_path,
|
|
strerror(errno));
|
|
disconnect_and_exit(1);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
fprintf(stderr,
|
|
_("%s: unrecognized link indicator \"%c\"\n"),
|
|
progname, copybuf[156]);
|
|
disconnect_and_exit(1);
|
|
}
|
|
continue; /* directory or link handled */
|
|
}
|
|
|
|
/*
|
|
* regular file
|
|
*/
|
|
file = fopen(filename, "wb");
|
|
if (!file)
|
|
{
|
|
fprintf(stderr, _("%s: could not create file \"%s\": %s\n"),
|
|
progname, filename, strerror(errno));
|
|
disconnect_and_exit(1);
|
|
}
|
|
|
|
#ifndef WIN32
|
|
if (chmod(filename, (mode_t) filemode))
|
|
fprintf(stderr, _("%s: could not set permissions on file \"%s\": %s\n"),
|
|
progname, filename, strerror(errno));
|
|
#endif
|
|
|
|
if (current_len_left == 0)
|
|
{
|
|
/*
|
|
* Done with this file, next one will be a new tar header
|
|
*/
|
|
fclose(file);
|
|
file = NULL;
|
|
continue;
|
|
}
|
|
} /* new file */
|
|
else
|
|
{
|
|
/*
|
|
* Continuing blocks in existing file
|
|
*/
|
|
if (current_len_left == 0 && r == current_padding)
|
|
{
|
|
/*
|
|
* Received the padding block for this file, ignore it and
|
|
* close the file, then move on to the next tar header.
|
|
*/
|
|
fclose(file);
|
|
file = NULL;
|
|
totaldone += r;
|
|
continue;
|
|
}
|
|
|
|
if (fwrite(copybuf, r, 1, file) != 1)
|
|
{
|
|
fprintf(stderr, _("%s: could not write to file \"%s\": %s\n"),
|
|
progname, filename, strerror(errno));
|
|
disconnect_and_exit(1);
|
|
}
|
|
totaldone += r;
|
|
progress_report(rownum, filename, false);
|
|
|
|
current_len_left -= r;
|
|
if (current_len_left == 0 && current_padding == 0)
|
|
{
|
|
/*
|
|
* Received the last block, and there is no padding to be
|
|
* expected. Close the file and move on to the next tar
|
|
* header.
|
|
*/
|
|
fclose(file);
|
|
file = NULL;
|
|
continue;
|
|
}
|
|
} /* continuing data in existing file */
|
|
} /* loop over all data blocks */
|
|
progress_report(rownum, filename, true);
|
|
|
|
if (file != NULL)
|
|
{
|
|
fprintf(stderr,
|
|
_("%s: COPY stream ended before last file was finished\n"),
|
|
progname);
|
|
disconnect_and_exit(1);
|
|
}
|
|
|
|
if (copybuf != NULL)
|
|
PQfreemem(copybuf);
|
|
|
|
if (basetablespace && writerecoveryconf)
|
|
WriteRecoveryConf();
|
|
|
|
/*
|
|
* No data is synced here, everything is done for all tablespaces at the
|
|
* end.
|
|
*/
|
|
}
|
|
|
|
/*
|
|
* Escape a string so that it can be used as a value in a key-value pair
|
|
* a configuration file.
|
|
*/
|
|
static char *
|
|
escape_quotes(const char *src)
|
|
{
|
|
char *result = escape_single_quotes_ascii(src);
|
|
|
|
if (!result)
|
|
{
|
|
fprintf(stderr, _("%s: out of memory\n"), progname);
|
|
exit(1);
|
|
}
|
|
return result;
|
|
}
|
|
|
|
/*
|
|
* Create a recovery.conf file in memory using a PQExpBuffer
|
|
*/
|
|
static void
|
|
GenerateRecoveryConf(PGconn *conn)
|
|
{
|
|
PQconninfoOption *connOptions;
|
|
PQconninfoOption *option;
|
|
PQExpBufferData conninfo_buf;
|
|
char *escaped;
|
|
|
|
recoveryconfcontents = createPQExpBuffer();
|
|
if (!recoveryconfcontents)
|
|
{
|
|
fprintf(stderr, _("%s: out of memory\n"), progname);
|
|
disconnect_and_exit(1);
|
|
}
|
|
|
|
connOptions = PQconninfo(conn);
|
|
if (connOptions == NULL)
|
|
{
|
|
fprintf(stderr, _("%s: out of memory\n"), progname);
|
|
disconnect_and_exit(1);
|
|
}
|
|
|
|
appendPQExpBufferStr(recoveryconfcontents, "standby_mode = 'on'\n");
|
|
|
|
initPQExpBuffer(&conninfo_buf);
|
|
for (option = connOptions; option && option->keyword; option++)
|
|
{
|
|
/*
|
|
* Do not emit this setting if: - the setting is "replication",
|
|
* "dbname" or "fallback_application_name", since these would be
|
|
* overridden by the libpqwalreceiver module anyway. - not set or
|
|
* empty.
|
|
*/
|
|
if (strcmp(option->keyword, "replication") == 0 ||
|
|
strcmp(option->keyword, "dbname") == 0 ||
|
|
strcmp(option->keyword, "fallback_application_name") == 0 ||
|
|
(option->val == NULL) ||
|
|
(option->val != NULL && option->val[0] == '\0'))
|
|
continue;
|
|
|
|
/* Separate key-value pairs with spaces */
|
|
if (conninfo_buf.len != 0)
|
|
appendPQExpBufferChar(&conninfo_buf, ' ');
|
|
|
|
/*
|
|
* Write "keyword=value" pieces, the value string is escaped and/or
|
|
* quoted if necessary.
|
|
*/
|
|
appendPQExpBuffer(&conninfo_buf, "%s=", option->keyword);
|
|
appendConnStrVal(&conninfo_buf, option->val);
|
|
}
|
|
|
|
/*
|
|
* Escape the connection string, so that it can be put in the config file.
|
|
* Note that this is different from the escaping of individual connection
|
|
* options above!
|
|
*/
|
|
escaped = escape_quotes(conninfo_buf.data);
|
|
appendPQExpBuffer(recoveryconfcontents, "primary_conninfo = '%s'\n", escaped);
|
|
free(escaped);
|
|
|
|
if (replication_slot)
|
|
{
|
|
escaped = escape_quotes(replication_slot);
|
|
appendPQExpBuffer(recoveryconfcontents, "primary_slot_name = '%s'\n", replication_slot);
|
|
free(escaped);
|
|
}
|
|
|
|
if (PQExpBufferBroken(recoveryconfcontents) ||
|
|
PQExpBufferDataBroken(conninfo_buf))
|
|
{
|
|
fprintf(stderr, _("%s: out of memory\n"), progname);
|
|
disconnect_and_exit(1);
|
|
}
|
|
|
|
termPQExpBuffer(&conninfo_buf);
|
|
|
|
PQconninfoFree(connOptions);
|
|
}
|
|
|
|
|
|
/*
|
|
* Write a recovery.conf file into the directory specified in basedir,
|
|
* with the contents already collected in memory.
|
|
*/
|
|
static void
|
|
WriteRecoveryConf(void)
|
|
{
|
|
char filename[MAXPGPATH];
|
|
FILE *cf;
|
|
|
|
sprintf(filename, "%s/recovery.conf", basedir);
|
|
|
|
cf = fopen(filename, "w");
|
|
if (cf == NULL)
|
|
{
|
|
fprintf(stderr, _("%s: could not create file \"%s\": %s\n"), progname, filename, strerror(errno));
|
|
disconnect_and_exit(1);
|
|
}
|
|
|
|
if (fwrite(recoveryconfcontents->data, recoveryconfcontents->len, 1, cf) != 1)
|
|
{
|
|
fprintf(stderr,
|
|
_("%s: could not write to file \"%s\": %s\n"),
|
|
progname, filename, strerror(errno));
|
|
disconnect_and_exit(1);
|
|
}
|
|
|
|
fclose(cf);
|
|
}
|
|
|
|
|
|
static void
|
|
BaseBackup(void)
|
|
{
|
|
PGresult *res;
|
|
char *sysidentifier;
|
|
TimeLineID latesttli;
|
|
TimeLineID starttli;
|
|
char *basebkp;
|
|
char escaped_label[MAXPGPATH];
|
|
char *maxrate_clause = NULL;
|
|
int i;
|
|
char xlogstart[64];
|
|
char xlogend[64];
|
|
int minServerMajor,
|
|
maxServerMajor;
|
|
int serverVersion,
|
|
serverMajor;
|
|
|
|
Assert(conn != NULL);
|
|
|
|
/*
|
|
* Check server version. BASE_BACKUP command was introduced in 9.1, so we
|
|
* can't work with servers older than 9.1.
|
|
*/
|
|
minServerMajor = 901;
|
|
maxServerMajor = PG_VERSION_NUM / 100;
|
|
serverVersion = PQserverVersion(conn);
|
|
serverMajor = serverVersion / 100;
|
|
if (serverMajor < minServerMajor || serverMajor > maxServerMajor)
|
|
{
|
|
const char *serverver = PQparameterStatus(conn, "server_version");
|
|
|
|
fprintf(stderr, _("%s: incompatible server version %s\n"),
|
|
progname, serverver ? serverver : "'unknown'");
|
|
disconnect_and_exit(1);
|
|
}
|
|
|
|
/*
|
|
* If WAL streaming was requested, also check that the server is new
|
|
* enough for that.
|
|
*/
|
|
if (includewal == STREAM_WAL && !CheckServerVersionForStreaming(conn))
|
|
{
|
|
/*
|
|
* Error message already written in CheckServerVersionForStreaming(),
|
|
* but add a hint about using -X none.
|
|
*/
|
|
fprintf(stderr, _("HINT: use -X none or -X fetch to disable log streaming\n"));
|
|
disconnect_and_exit(1);
|
|
}
|
|
|
|
/*
|
|
* Build contents of recovery.conf if requested
|
|
*/
|
|
if (writerecoveryconf)
|
|
GenerateRecoveryConf(conn);
|
|
|
|
/*
|
|
* Run IDENTIFY_SYSTEM so we can get the timeline
|
|
*/
|
|
if (!RunIdentifySystem(conn, &sysidentifier, &latesttli, NULL, NULL))
|
|
disconnect_and_exit(1);
|
|
|
|
/*
|
|
* Start the actual backup
|
|
*/
|
|
PQescapeStringConn(conn, escaped_label, label, sizeof(escaped_label), &i);
|
|
|
|
if (maxrate > 0)
|
|
maxrate_clause = psprintf("MAX_RATE %u", maxrate);
|
|
|
|
if (verbose)
|
|
fprintf(stderr,
|
|
_("%s: initiating base backup, waiting for checkpoint to complete\n"),
|
|
progname);
|
|
|
|
if (showprogress && !verbose)
|
|
fprintf(stderr, "waiting for checkpoint\n");
|
|
|
|
basebkp =
|
|
psprintf("BASE_BACKUP LABEL '%s' %s %s %s %s %s %s",
|
|
escaped_label,
|
|
showprogress ? "PROGRESS" : "",
|
|
includewal == FETCH_WAL ? "WAL" : "",
|
|
fastcheckpoint ? "FAST" : "",
|
|
includewal == NO_WAL ? "" : "NOWAIT",
|
|
maxrate_clause ? maxrate_clause : "",
|
|
format == 't' ? "TABLESPACE_MAP" : "");
|
|
|
|
if (PQsendQuery(conn, basebkp) == 0)
|
|
{
|
|
fprintf(stderr, _("%s: could not send replication command \"%s\": %s"),
|
|
progname, "BASE_BACKUP", PQerrorMessage(conn));
|
|
disconnect_and_exit(1);
|
|
}
|
|
|
|
/*
|
|
* Get the starting xlog position
|
|
*/
|
|
res = PQgetResult(conn);
|
|
if (PQresultStatus(res) != PGRES_TUPLES_OK)
|
|
{
|
|
fprintf(stderr, _("%s: could not initiate base backup: %s"),
|
|
progname, PQerrorMessage(conn));
|
|
disconnect_and_exit(1);
|
|
}
|
|
if (PQntuples(res) != 1)
|
|
{
|
|
fprintf(stderr,
|
|
_("%s: server returned unexpected response to BASE_BACKUP command; got %d rows and %d fields, expected %d rows and %d fields\n"),
|
|
progname, PQntuples(res), PQnfields(res), 1, 2);
|
|
disconnect_and_exit(1);
|
|
}
|
|
|
|
strlcpy(xlogstart, PQgetvalue(res, 0, 0), sizeof(xlogstart));
|
|
|
|
if (verbose)
|
|
fprintf(stderr, _("%s: checkpoint completed\n"), progname);
|
|
|
|
/*
|
|
* 9.3 and later sends the TLI of the starting point. With older servers,
|
|
* assume it's the same as the latest timeline reported by
|
|
* IDENTIFY_SYSTEM.
|
|
*/
|
|
if (PQnfields(res) >= 2)
|
|
starttli = atoi(PQgetvalue(res, 0, 1));
|
|
else
|
|
starttli = latesttli;
|
|
PQclear(res);
|
|
MemSet(xlogend, 0, sizeof(xlogend));
|
|
|
|
if (verbose && includewal != NO_WAL)
|
|
fprintf(stderr, _("%s: transaction log start point: %s on timeline %u\n"),
|
|
progname, xlogstart, starttli);
|
|
|
|
/*
|
|
* Get the header
|
|
*/
|
|
res = PQgetResult(conn);
|
|
if (PQresultStatus(res) != PGRES_TUPLES_OK)
|
|
{
|
|
fprintf(stderr, _("%s: could not get backup header: %s"),
|
|
progname, PQerrorMessage(conn));
|
|
disconnect_and_exit(1);
|
|
}
|
|
if (PQntuples(res) < 1)
|
|
{
|
|
fprintf(stderr, _("%s: no data returned from server\n"), progname);
|
|
disconnect_and_exit(1);
|
|
}
|
|
|
|
/*
|
|
* Sum up the total size, for progress reporting
|
|
*/
|
|
totalsize = totaldone = 0;
|
|
tablespacecount = PQntuples(res);
|
|
for (i = 0; i < PQntuples(res); i++)
|
|
{
|
|
totalsize += atol(PQgetvalue(res, i, 2));
|
|
|
|
/*
|
|
* Verify tablespace directories are empty. Don't bother with the
|
|
* first once since it can be relocated, and it will be checked before
|
|
* we do anything anyway.
|
|
*/
|
|
if (format == 'p' && !PQgetisnull(res, i, 1))
|
|
{
|
|
char *path = (char *) get_tablespace_mapping(PQgetvalue(res, i, 1));
|
|
|
|
verify_dir_is_empty_or_create(path, &made_tablespace_dirs, &found_tablespace_dirs);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* When writing to stdout, require a single tablespace
|
|
*/
|
|
if (format == 't' && strcmp(basedir, "-") == 0 && PQntuples(res) > 1)
|
|
{
|
|
fprintf(stderr,
|
|
_("%s: can only write single tablespace to stdout, database has %d\n"),
|
|
progname, PQntuples(res));
|
|
disconnect_and_exit(1);
|
|
}
|
|
|
|
/*
|
|
* If we're streaming WAL, start the streaming session before we start
|
|
* receiving the actual data chunks.
|
|
*/
|
|
if (includewal == STREAM_WAL)
|
|
{
|
|
if (verbose)
|
|
fprintf(stderr, _("%s: starting background WAL receiver\n"),
|
|
progname);
|
|
StartLogStreamer(xlogstart, starttli, sysidentifier);
|
|
}
|
|
|
|
/*
|
|
* Start receiving chunks
|
|
*/
|
|
for (i = 0; i < PQntuples(res); i++)
|
|
{
|
|
if (format == 't')
|
|
ReceiveTarFile(conn, res, i);
|
|
else
|
|
ReceiveAndUnpackTarFile(conn, res, i);
|
|
} /* Loop over all tablespaces */
|
|
|
|
if (showprogress)
|
|
{
|
|
progress_report(PQntuples(res), NULL, true);
|
|
fprintf(stderr, "\n"); /* Need to move to next line */
|
|
}
|
|
|
|
PQclear(res);
|
|
|
|
/*
|
|
* Get the stop position
|
|
*/
|
|
res = PQgetResult(conn);
|
|
if (PQresultStatus(res) != PGRES_TUPLES_OK)
|
|
{
|
|
fprintf(stderr,
|
|
_("%s: could not get transaction log end position from server: %s"),
|
|
progname, PQerrorMessage(conn));
|
|
disconnect_and_exit(1);
|
|
}
|
|
if (PQntuples(res) != 1)
|
|
{
|
|
fprintf(stderr,
|
|
_("%s: no transaction log end position returned from server\n"),
|
|
progname);
|
|
disconnect_and_exit(1);
|
|
}
|
|
strlcpy(xlogend, PQgetvalue(res, 0, 0), sizeof(xlogend));
|
|
if (verbose && includewal != NO_WAL)
|
|
fprintf(stderr, _("%s: transaction log end point: %s\n"), progname, xlogend);
|
|
PQclear(res);
|
|
|
|
res = PQgetResult(conn);
|
|
if (PQresultStatus(res) != PGRES_COMMAND_OK)
|
|
{
|
|
fprintf(stderr, _("%s: final receive failed: %s"),
|
|
progname, PQerrorMessage(conn));
|
|
disconnect_and_exit(1);
|
|
}
|
|
|
|
if (bgchild > 0)
|
|
{
|
|
#ifndef WIN32
|
|
int status;
|
|
int r;
|
|
#else
|
|
DWORD status;
|
|
|
|
/*
|
|
* get a pointer sized version of bgchild to avoid warnings about
|
|
* casting to a different size on WIN64.
|
|
*/
|
|
intptr_t bgchild_handle = bgchild;
|
|
uint32 hi,
|
|
lo;
|
|
#endif
|
|
|
|
if (verbose)
|
|
fprintf(stderr,
|
|
_("%s: waiting for background process to finish streaming ...\n"), progname);
|
|
|
|
#ifndef WIN32
|
|
if (write(bgpipe[1], xlogend, strlen(xlogend)) != strlen(xlogend))
|
|
{
|
|
fprintf(stderr,
|
|
_("%s: could not send command to background pipe: %s\n"),
|
|
progname, strerror(errno));
|
|
disconnect_and_exit(1);
|
|
}
|
|
|
|
/* Just wait for the background process to exit */
|
|
r = waitpid(bgchild, &status, 0);
|
|
if (r == -1)
|
|
{
|
|
fprintf(stderr, _("%s: could not wait for child process: %s\n"),
|
|
progname, strerror(errno));
|
|
disconnect_and_exit(1);
|
|
}
|
|
if (r != bgchild)
|
|
{
|
|
fprintf(stderr, _("%s: child %d died, expected %d\n"),
|
|
progname, r, (int) bgchild);
|
|
disconnect_and_exit(1);
|
|
}
|
|
if (!WIFEXITED(status))
|
|
{
|
|
fprintf(stderr, _("%s: child process did not exit normally\n"),
|
|
progname);
|
|
disconnect_and_exit(1);
|
|
}
|
|
if (WEXITSTATUS(status) != 0)
|
|
{
|
|
fprintf(stderr, _("%s: child process exited with error %d\n"),
|
|
progname, WEXITSTATUS(status));
|
|
disconnect_and_exit(1);
|
|
}
|
|
/* Exited normally, we're happy! */
|
|
#else /* WIN32 */
|
|
|
|
/*
|
|
* On Windows, since we are in the same process, we can just store the
|
|
* value directly in the variable, and then set the flag that says
|
|
* it's there.
|
|
*/
|
|
if (sscanf(xlogend, "%X/%X", &hi, &lo) != 2)
|
|
{
|
|
fprintf(stderr,
|
|
_("%s: could not parse transaction log location \"%s\"\n"),
|
|
progname, xlogend);
|
|
disconnect_and_exit(1);
|
|
}
|
|
xlogendptr = ((uint64) hi) << 32 | lo;
|
|
InterlockedIncrement(&has_xlogendptr);
|
|
|
|
/* First wait for the thread to exit */
|
|
if (WaitForSingleObjectEx((HANDLE) bgchild_handle, INFINITE, FALSE) !=
|
|
WAIT_OBJECT_0)
|
|
{
|
|
_dosmaperr(GetLastError());
|
|
fprintf(stderr, _("%s: could not wait for child thread: %s\n"),
|
|
progname, strerror(errno));
|
|
disconnect_and_exit(1);
|
|
}
|
|
if (GetExitCodeThread((HANDLE) bgchild_handle, &status) == 0)
|
|
{
|
|
_dosmaperr(GetLastError());
|
|
fprintf(stderr, _("%s: could not get child thread exit status: %s\n"),
|
|
progname, strerror(errno));
|
|
disconnect_and_exit(1);
|
|
}
|
|
if (status != 0)
|
|
{
|
|
fprintf(stderr, _("%s: child thread exited with error %u\n"),
|
|
progname, (unsigned int) status);
|
|
disconnect_and_exit(1);
|
|
}
|
|
/* Exited normally, we're happy */
|
|
#endif
|
|
}
|
|
|
|
/* Free the recovery.conf contents */
|
|
destroyPQExpBuffer(recoveryconfcontents);
|
|
|
|
/*
|
|
* End of copy data. Final result is already checked inside the loop.
|
|
*/
|
|
PQclear(res);
|
|
PQfinish(conn);
|
|
|
|
/*
|
|
* Make data persistent on disk once backup is completed. For tar
|
|
* format once syncing the parent directory is fine, each tar file
|
|
* created per tablespace has been already synced. In plain format,
|
|
* all the data of the base directory is synced, taking into account
|
|
* all the tablespaces. Errors are not considered fatal.
|
|
*/
|
|
if (do_sync)
|
|
{
|
|
if (format == 't')
|
|
{
|
|
if (strcmp(basedir, "-") != 0)
|
|
(void) fsync_fname(basedir, true, progname);
|
|
}
|
|
else
|
|
{
|
|
(void) fsync_pgdata(basedir, progname, serverVersion);
|
|
}
|
|
}
|
|
|
|
if (verbose)
|
|
fprintf(stderr, _("%s: base backup completed\n"), progname);
|
|
}
|
|
|
|
|
|
int
|
|
main(int argc, char **argv)
|
|
{
|
|
static struct option long_options[] = {
|
|
{"help", no_argument, NULL, '?'},
|
|
{"version", no_argument, NULL, 'V'},
|
|
{"pgdata", required_argument, NULL, 'D'},
|
|
{"format", required_argument, NULL, 'F'},
|
|
{"checkpoint", required_argument, NULL, 'c'},
|
|
{"max-rate", required_argument, NULL, 'r'},
|
|
{"write-recovery-conf", no_argument, NULL, 'R'},
|
|
{"slot", required_argument, NULL, 'S'},
|
|
{"tablespace-mapping", required_argument, NULL, 'T'},
|
|
{"wal-method", required_argument, NULL, 'X'},
|
|
{"gzip", no_argument, NULL, 'z'},
|
|
{"compress", required_argument, NULL, 'Z'},
|
|
{"label", required_argument, NULL, 'l'},
|
|
{"no-clean", no_argument, NULL, 'n'},
|
|
{"no-sync", no_argument, NULL, 'N'},
|
|
{"dbname", required_argument, NULL, 'd'},
|
|
{"host", required_argument, NULL, 'h'},
|
|
{"port", required_argument, NULL, 'p'},
|
|
{"username", required_argument, NULL, 'U'},
|
|
{"no-password", no_argument, NULL, 'w'},
|
|
{"password", no_argument, NULL, 'W'},
|
|
{"status-interval", required_argument, NULL, 's'},
|
|
{"verbose", no_argument, NULL, 'v'},
|
|
{"progress", no_argument, NULL, 'P'},
|
|
{"waldir", required_argument, NULL, 1},
|
|
{"no-slot", no_argument, NULL, 2},
|
|
{NULL, 0, NULL, 0}
|
|
};
|
|
int c;
|
|
|
|
int option_index;
|
|
bool no_slot = false;
|
|
|
|
progname = get_progname(argv[0]);
|
|
set_pglocale_pgservice(argv[0], PG_TEXTDOMAIN("pg_basebackup"));
|
|
|
|
if (argc > 1)
|
|
{
|
|
if (strcmp(argv[1], "--help") == 0 || strcmp(argv[1], "-?") == 0)
|
|
{
|
|
usage();
|
|
exit(0);
|
|
}
|
|
else if (strcmp(argv[1], "-V") == 0
|
|
|| strcmp(argv[1], "--version") == 0)
|
|
{
|
|
puts("pg_basebackup (PostgreSQL) " PG_VERSION);
|
|
exit(0);
|
|
}
|
|
}
|
|
|
|
atexit(cleanup_directories_atexit);
|
|
|
|
while ((c = getopt_long(argc, argv, "D:F:r:RT:X:l:nNzZ:d:c:h:p:U:s:S:wWvP",
|
|
long_options, &option_index)) != -1)
|
|
{
|
|
switch (c)
|
|
{
|
|
case 'D':
|
|
basedir = pg_strdup(optarg);
|
|
break;
|
|
case 'F':
|
|
if (strcmp(optarg, "p") == 0 || strcmp(optarg, "plain") == 0)
|
|
format = 'p';
|
|
else if (strcmp(optarg, "t") == 0 || strcmp(optarg, "tar") == 0)
|
|
format = 't';
|
|
else
|
|
{
|
|
fprintf(stderr,
|
|
_("%s: invalid output format \"%s\", must be \"plain\" or \"tar\"\n"),
|
|
progname, optarg);
|
|
exit(1);
|
|
}
|
|
break;
|
|
case 'r':
|
|
maxrate = parse_max_rate(optarg);
|
|
break;
|
|
case 'R':
|
|
writerecoveryconf = true;
|
|
break;
|
|
case 'S':
|
|
|
|
/*
|
|
* When specifying replication slot name, use a permanent
|
|
* slot.
|
|
*/
|
|
replication_slot = pg_strdup(optarg);
|
|
temp_replication_slot = false;
|
|
break;
|
|
case 2:
|
|
no_slot = true;
|
|
break;
|
|
case 'T':
|
|
tablespace_list_append(optarg);
|
|
break;
|
|
case 'X':
|
|
if (strcmp(optarg, "n") == 0 ||
|
|
strcmp(optarg, "none") == 0)
|
|
{
|
|
includewal = NO_WAL;
|
|
}
|
|
else if (strcmp(optarg, "f") == 0 ||
|
|
strcmp(optarg, "fetch") == 0)
|
|
{
|
|
includewal = FETCH_WAL;
|
|
}
|
|
else if (strcmp(optarg, "s") == 0 ||
|
|
strcmp(optarg, "stream") == 0)
|
|
{
|
|
includewal = STREAM_WAL;
|
|
}
|
|
else
|
|
{
|
|
fprintf(stderr,
|
|
_("%s: invalid wal-method option \"%s\", must be \"fetch\", \"stream\" or \"none\"\n"),
|
|
progname, optarg);
|
|
exit(1);
|
|
}
|
|
break;
|
|
case 1:
|
|
xlog_dir = pg_strdup(optarg);
|
|
break;
|
|
case 'l':
|
|
label = pg_strdup(optarg);
|
|
break;
|
|
case 'n':
|
|
noclean = true;
|
|
break;
|
|
case 'N':
|
|
do_sync = false;
|
|
break;
|
|
case 'z':
|
|
#ifdef HAVE_LIBZ
|
|
compresslevel = Z_DEFAULT_COMPRESSION;
|
|
#else
|
|
compresslevel = 1; /* will be rejected below */
|
|
#endif
|
|
break;
|
|
case 'Z':
|
|
compresslevel = atoi(optarg);
|
|
if (compresslevel < 0 || compresslevel > 9)
|
|
{
|
|
fprintf(stderr, _("%s: invalid compression level \"%s\"\n"),
|
|
progname, optarg);
|
|
exit(1);
|
|
}
|
|
break;
|
|
case 'c':
|
|
if (pg_strcasecmp(optarg, "fast") == 0)
|
|
fastcheckpoint = true;
|
|
else if (pg_strcasecmp(optarg, "spread") == 0)
|
|
fastcheckpoint = false;
|
|
else
|
|
{
|
|
fprintf(stderr, _("%s: invalid checkpoint argument \"%s\", must be \"fast\" or \"spread\"\n"),
|
|
progname, optarg);
|
|
exit(1);
|
|
}
|
|
break;
|
|
case 'd':
|
|
connection_string = pg_strdup(optarg);
|
|
break;
|
|
case 'h':
|
|
dbhost = pg_strdup(optarg);
|
|
break;
|
|
case 'p':
|
|
dbport = pg_strdup(optarg);
|
|
break;
|
|
case 'U':
|
|
dbuser = pg_strdup(optarg);
|
|
break;
|
|
case 'w':
|
|
dbgetpassword = -1;
|
|
break;
|
|
case 'W':
|
|
dbgetpassword = 1;
|
|
break;
|
|
case 's':
|
|
standby_message_timeout = atoi(optarg) * 1000;
|
|
if (standby_message_timeout < 0)
|
|
{
|
|
fprintf(stderr, _("%s: invalid status interval \"%s\"\n"),
|
|
progname, optarg);
|
|
exit(1);
|
|
}
|
|
break;
|
|
case 'v':
|
|
verbose++;
|
|
break;
|
|
case 'P':
|
|
showprogress = true;
|
|
break;
|
|
default:
|
|
|
|
/*
|
|
* getopt_long already emitted a complaint
|
|
*/
|
|
fprintf(stderr, _("Try \"%s --help\" for more information.\n"),
|
|
progname);
|
|
exit(1);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Any non-option arguments?
|
|
*/
|
|
if (optind < argc)
|
|
{
|
|
fprintf(stderr,
|
|
_("%s: too many command-line arguments (first is \"%s\")\n"),
|
|
progname, argv[optind]);
|
|
fprintf(stderr, _("Try \"%s --help\" for more information.\n"),
|
|
progname);
|
|
exit(1);
|
|
}
|
|
|
|
/*
|
|
* Required arguments
|
|
*/
|
|
if (basedir == NULL)
|
|
{
|
|
fprintf(stderr, _("%s: no target directory specified\n"), progname);
|
|
fprintf(stderr, _("Try \"%s --help\" for more information.\n"),
|
|
progname);
|
|
exit(1);
|
|
}
|
|
|
|
/*
|
|
* Mutually exclusive arguments
|
|
*/
|
|
if (format == 'p' && compresslevel != 0)
|
|
{
|
|
fprintf(stderr,
|
|
_("%s: only tar mode backups can be compressed\n"),
|
|
progname);
|
|
fprintf(stderr, _("Try \"%s --help\" for more information.\n"),
|
|
progname);
|
|
exit(1);
|
|
}
|
|
|
|
if (format == 't' && includewal == STREAM_WAL && strcmp(basedir, "-") == 0)
|
|
{
|
|
fprintf(stderr,
|
|
_("%s: cannot stream transaction logs in tar mode to stdout\n"),
|
|
progname);
|
|
fprintf(stderr, _("Try \"%s --help\" for more information.\n"),
|
|
progname);
|
|
exit(1);
|
|
}
|
|
|
|
if (replication_slot && includewal != STREAM_WAL)
|
|
{
|
|
fprintf(stderr,
|
|
_("%s: replication slots can only be used with WAL streaming\n"),
|
|
progname);
|
|
fprintf(stderr, _("Try \"%s --help\" for more information.\n"),
|
|
progname);
|
|
exit(1);
|
|
}
|
|
|
|
if (no_slot)
|
|
{
|
|
if (replication_slot)
|
|
{
|
|
fprintf(stderr,
|
|
_("%s: --no-slot cannot be used with slot name\n"),
|
|
progname);
|
|
fprintf(stderr, _("Try \"%s --help\" for more information.\n"),
|
|
progname);
|
|
exit(1);
|
|
}
|
|
temp_replication_slot = false;
|
|
}
|
|
|
|
if (strcmp(xlog_dir, "") != 0)
|
|
{
|
|
if (format != 'p')
|
|
{
|
|
fprintf(stderr,
|
|
_("%s: transaction log directory location can only be specified in plain mode\n"),
|
|
progname);
|
|
fprintf(stderr, _("Try \"%s --help\" for more information.\n"),
|
|
progname);
|
|
exit(1);
|
|
}
|
|
|
|
/* clean up xlog directory name, check it's absolute */
|
|
canonicalize_path(xlog_dir);
|
|
if (!is_absolute_path(xlog_dir))
|
|
{
|
|
fprintf(stderr, _("%s: transaction log directory location must be "
|
|
"an absolute path\n"), progname);
|
|
fprintf(stderr, _("Try \"%s --help\" for more information.\n"),
|
|
progname);
|
|
exit(1);
|
|
}
|
|
}
|
|
|
|
#ifndef HAVE_LIBZ
|
|
if (compresslevel != 0)
|
|
{
|
|
fprintf(stderr,
|
|
_("%s: this build does not support compression\n"),
|
|
progname);
|
|
exit(1);
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* Verify that the target directory exists, or create it. For plaintext
|
|
* backups, always require the directory. For tar backups, require it
|
|
* unless we are writing to stdout.
|
|
*/
|
|
if (format == 'p' || strcmp(basedir, "-") != 0)
|
|
verify_dir_is_empty_or_create(basedir, &made_new_pgdata, &found_existing_pgdata);
|
|
|
|
/* connection in replication mode to server */
|
|
conn = GetConnection();
|
|
if (!conn)
|
|
{
|
|
/* Error message already written in GetConnection() */
|
|
exit(1);
|
|
}
|
|
|
|
/* Create transaction log symlink, if required */
|
|
if (strcmp(xlog_dir, "") != 0)
|
|
{
|
|
char *linkloc;
|
|
|
|
verify_dir_is_empty_or_create(xlog_dir, &made_new_xlogdir, &found_existing_xlogdir);
|
|
|
|
/*
|
|
* Form name of the place where the symlink must go. pg_xlog has
|
|
* been renamed to pg_wal in post-10 clusters.
|
|
*/
|
|
linkloc = psprintf("%s/%s", basedir,
|
|
PQserverVersion(conn) < MINIMUM_VERSION_FOR_PG_WAL ?
|
|
"pg_xlog" : "pg_wal");
|
|
|
|
#ifdef HAVE_SYMLINK
|
|
if (symlink(xlog_dir, linkloc) != 0)
|
|
{
|
|
fprintf(stderr, _("%s: could not create symbolic link \"%s\": %s\n"),
|
|
progname, linkloc, strerror(errno));
|
|
disconnect_and_exit(1);
|
|
}
|
|
#else
|
|
fprintf(stderr, _("%s: symlinks are not supported on this platform\n"));
|
|
disconnect_and_exit(1);
|
|
#endif
|
|
free(linkloc);
|
|
}
|
|
|
|
BaseBackup();
|
|
|
|
success = true;
|
|
return 0;
|
|
}
|