Postgresql + corrupted disk = data loss. (Need help for database recover)

Hello, i have a problem.

I've got a production server, working fine. Then i've got strange error:
> ERROR: right sibling's left-link doesn't match: block 147 links to 407
instead of expected 146 in index "order_status_key"'
And decidet to backup all server. So i shut-down VPS with server and backup
all data.
Then, after i booted it - and then - i've got Data loss.

I've lost data, that have been written to DB around 10-100 hours (different
tables, have different last updated value).

Then i've analyzed log, and found this:
7 days ago appears this errors:
db= LOG: could not rename temporary statistics file
"pg_stat_tmp/pgstat.tmp" to "pg_stat_tmp/pgstat.stat":
db= WARNING: pgstat wait timeout
ERROR: missing chunk number 0 for toast value 2550017 in pg_toast_17076

5 days ago:
a lot of: ERROR: xlog flush request F/DC1A22D8 is not satisfied ---
flushed only to F/526512E0
83238 db= WARNING: could not write block 54 of base/16384/2619
83239 db= CONTEXT: writing block 54 of relation base/16384/2619

And today:
18 db= LOG: could not open file "pg_xlog/000000010000000F00000052"
(log file 15, segment 82):
19 db= ERROR: xlog flush request F/DC1A22D8 is not satisfied ---
flushed only to F/52FDF0E0

There is any ability to recover fresh data from database?

Thanks!