PostgreSQL 9.2存档上次在恢复后重播

根据PostgreSQL 9.2官方文档，我在postgres.conf文件上设置了连续存档：

wal_level = archive
archive_mode = on
archive_command = 'test ! -f /.../archive/%f && cp %p /.../archive/%f'

成功备份和恢复后，启动数据库时，archive命令会失败，因为PostgreSQL正在尝试归档最后一个重播的WAL文件，显然，它已经归档了。我的recovery.conf文件如下所示：

restore_command = 'cp /.../archive/%f "%p"'
recovery_target_time = '2013-07-02 15:20:12'

这是我尝试启动数据库时遇到的错误：

LOG:  database system was interrupted; last known up at 2013-07-02 14:53:37 CEST
LOG:  creating missing WAL directory "pg_xlog/archive_status"
LOG:  starting point-in-time recovery to 2013-07-02 15:20:12+02
LOG:  restored log file "000000010000000000000002" from archive
LOG:  redo starts at 0/2000020
LOG:  consistent recovery state reached at 0/20023D0
LOG:  restored log file "000000010000000000000003" from archive
LOG:  recovery stopping before commit of transaction 4063, time 2013-07-02 15:20:12.211559+02
LOG:  redo done at 0/306D8B8
LOG:  last completed transaction was at log time 2013-07-02 15:20:11.189978+02
cp: cannot stat `/.../archive/00000002.history': No such file or directory
LOG:  selected new timeline ID: 2
cp: cannot stat `/.../archive/00000001.history': No such file or directory
LOG:  archive recovery complete
LOG:  autovacuum launcher started
LOG:  database system is ready to accept connections
LOG:  archive command failed with exit code 1
DETAIL:  The failed archive command was: test ! -f /.../archive/000000010000000000000003 && cp pg_xlog/000000010000000000000003 /.../archive/000000010000000000000003
LOG:  archive command failed with exit code 1
DETAIL:  The failed archive command was: test ! -f /.../archive/000000010000000000000003 && cp pg_xlog/000000010000000000000003 /.../archive/000000010000000000000003
LOG:  archive command failed with exit code 1
DETAIL:  The failed archive command was: test ! -f /.../archive/000000010000000000000003 && cp pg_xlog/000000010000000000000003 /.../archive/000000010000000000000003
WARNING:  transaction log file "000000010000000000000003" could not be archived: too many failures

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这是预期的行为吗？恢复后是否应存档上次重播的WAL文件？如果是这样，如果文件已按文档中所述进行存档，则存档命令不应失败。

显然，您应该只存档一次并恢复存档的副本

我会在恢复期间关闭归档，然后在恢复后打开归档