Most urgent

My server just had a bad crash...
At reboot time, the pg_xlog filesystem didn't mount...
The I have those errors at startup...

is there anything can do to recover?

Jan 27 13:24:11 server postgres[3469]: [3-1] LOG: checkpoint record is at 7/B7668
Jan 27 13:24:11 server postgres[3469]: [4-1] LOG: redo record is at 7/A08; undo record is at 0/0; shutdown FALSE
Jan 27 13:24:11 server postgres[3469]: [5-1] LOG: next transaction ID: 21363395; next OID: 85839615
Jan 27 13:24:11 server postgres[3469]: [6-1] LOG: database system was not properly shut down; automatic recovery in progress
Jan 27 13:24:11 server postgres[3469]: [7-1] LOG: redo starts at 7/A08
Jan 27 13:24:11 server postgres[3469]: [8-1] PANIC: could not read block 222 of relation "79389213": Périphérique ou adresse inexistants
Jan 27 13:24:11 server postgres[3467]: [2-1] LOG: startup process (PID 3469) was terminated by signal 6
Jan 27 13:24:11 server postgres[3467]: [3-1] LOG: aborting startup due to startup process failure
Jan 27 13:27:04 server postgres[3569]: [1-1] LOG: could not bind IPv6 socket: Réseau inaccessible
Jan 27 13:27:04 server postgres[3569]: [1-2] HINT: Is another postmaster already running on port 5432? If not, wait a few seconds and retry.
Jan 27 13:27:04 server postgres[3571]: [2-1] LOG: database system was interrupted while in recovery at 2004-01-27 13:24:11 MET
Jan 27 13:27:04 server postgres[3571]: [2-2] HINT: This probably means that some data is corrupted and you will have to use the last backup for recovery.
Jan 27 13:27:04 server postgres[3571]: [3-1] LOG: checkpoint record is at 7/B7668
Jan 27 13:27:04 server postgres[3571]: [4-1] LOG: redo record is at 7/A08; undo record is at 0/0; shutdown FALSE
Jan 27 13:27:04 server postgres[3571]: [5-1] LOG: next transaction ID: 21363395; next OID: 85839615
Jan 27 13:27:04 server postgres[3571]: [6-1] LOG: database system was not properly shut down; automatic recovery in progress
Jan 27 13:27:04 server postgres[3571]: [7-1] LOG: redo starts at 7/A08
Jan 27 13:27:04 server postgres[3571]: [8-1] PANIC: could not read block 222 of relation "79389213": Périphérique ou adresse inexistants
Jan 27 13:27:04 server postgres[3569]: [2-1] LOG: startup process (PID 3571) was terminated by signal 6
Jan 27 13:27:04 server postgres[3569]: [3-1] LOG: aborting startup due to startup process failure

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Olivier PRENANT Tel: +33-5-61-50-97-00 (Work)
6, Chemin d'Harraud Turrou +33-5-61-50-97-01 (Fax)
31190 AUTERIVE +33-6-07-63-80-64 (GSM)
FRANCE Email: ohp(at)pyrenet(dot)fr
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