Re: production server down

Joe Conway <mail@joeconway.com> writes:
> I've got a down production server (will not restart) with the following 
> tail to its log file:

Please show the output of pg_controldata, or a hex dump of pg_control
if pg_controldata fails.

> The server experienced a hang (as yet unexplained) yesterday and was 
> restarted at 2004-12-13 16:38:49 according to syslog. I'm told by the 
> network admin that there was a problem with the network card on restart, 
> so the nfs mount most probably disappeared and then reappeared 
> underneath a quiescent postgresql at some point between 2004-12-13 
> 16:39:55 and 2004-12-14 15:36:20 (but much closer to the former than the 
> latter).

I've always felt that running a database across NFS was a Bad Idea ;-)

> Any help would be much appreciated. Is our only option pg_resetxlog?

Possibly, but let's try to dig first.  I suppose the DB is too large
to save an image aside for forensics later?
        regards, tom lane