Hello,
I used WAL continuous Archiving to a remote backup server using the following command:
archive_command ='scp %p pgu@backup_server:/bkp/wal/%f && ssh pgu@backup_server "gzip /bkp/wal/%f"'
restore_command ='ssh pgu@backup_server "gunzip /bkp/wal%f" && scp pgu@backup_server:/bkp/wal/%f %p'
< 2014-01-02 10:36:07.375 EST >LOG: database system was interrupted; last known up at 2013-12-31 13:09:55 EST
< 2014-01-02 10:36:07.377 EST >LOG: creating missing WAL directory "pg_xlog/archive_status"
< 2014-01-02 10:36:07.379 EST >LOG: starting point-in-time recovery to 2013-12-31 13:15:00-05
scp: /bkp/wal/f%: No such file or directory
gzip: /bkp/wal/0000000200000000000000F7: unknown suffix -- ignored
gzip: /bkp/wal/00000002.history: unknown suffix -- ignored
< 2014-01-02 10:36:18.924 EST >LOG: invalid checkpoint record
< 2014-01-02 10:36:18.924 EST >FATAL: could not locate required checkpoint record
< 2014-01-02 10:36:18.924 EST >HINT: If you are not restoring from a backup, try removing the file "/var/lib/pgsql/9.3/data/backup_label".
< 2014-01-02 10:36:18.930 EST >LOG: startup process (PID 30246) exited with exit code 1
< 2014-01-02 10:36:18.930 EST >LOG: aborting startup due to startup process failure
[pgu@backup_server ~]$ ls -l /bkp/wal/
total 18456
-rw-------. 1 pgu pgu 229 Dec 31 11:59 00000001000000000000000B.00000028.backup.gz
-rw-------. 1 pgu pgu 230 Dec 31 11:59 0000000200000000000000D4.00000028.backup.gz
-rw-------. 1 pgu pgu 16777216 Dec 31 13:10 0000000200000000000000F7
-rw-------. 1 pgu pgu 231 Dec 31 13:10 0000000200000000000000F7.00000028.backup.gz
-rw-------. 1 pgu pgu 37896 Dec 31 13:12 0000000200000000000000F8.gz
-rw-------. 1 pgu pgu 16468 Dec 31 13:16 0000000200000000000000F9.gz
-rw-------. 1 pgu pgu 2000673 Dec 31 13:20 0000000200000000000000FA.gz
-rw-------. 1 pgu pgu 37598 Dec 31 13:26 0000000200000000000000FB.gz
-rw-------. 1 pgu pgu 50 Dec 31 16:43 00000002.history
restoring from the local server works consistently using:
restore_command ='gunzip /bkp/wal/%f && cp /bkp/wal/%f %p'