Re: Can't Restart ver 8.0b3

Bingo!  Thanks Tom.

-----Original Message-----
From: Tom Lane [mailto:tgl@sss.pgh.pa.us]
Sent: Wednesday, December 22, 2004 11:33 AM
To: Dave Hartwig
Cc: pgsql-hackers@postgresql.org
Subject: Re: [HACKERS] Can't Restart ver 8.0b3

"Dave Hartwig" <daveh@Routescape.com> writes:
> LOG:  next transaction ID: 884736; next OID: 306834
> PANIC:  could not access status of transaction 884736
> DETAIL:  could not read from file
> "/usr/local/pgsql8b3/data/pg_clog/0000" at offset 221184: Success
> LOG:  startup process (PID 17774) was terminated by signal 6
> LOG:  aborting startup due to startup process failure

Hmm ... do we have a problem when the next XID is exactly at a page
boundary?  I'll look into that.

> LOG:  next transaction ID: 1048576; next OID: 306834
> PANIC:  could not access status of transaction 1048576
> DETAIL:  could not open file "/usr/local/pgsql8b3/data/pg_clog/0001":
No
> such file or directory

IIRC, pg_resetxlog doesn't have any provision to create new pg_clog
segments.  Which is probably an oversight, but it's easy enough to
do it by hand.  Do something likedd bs=8k count=1 </dev/zero
>/usr/local/pgsql8b3/data/pg_clog/0001
and everything should be fine.
        regards, tom lane