Re: 9.0 standby - could not open file global/XXXXX - Mailing list pgsql-general

From Filip Rembiałkowski
Subject Re: 9.0 standby - could not open file global/XXXXX
Date
Msg-id CAP_rwwnZ6LxjEHsq-3v_50_K_NYzYpaM0SLhfjkNA9ZYuZp3xQ@mail.gmail.com
Whole thread Raw
In response to 9.0 standby - could not open file global/XXXXX  (Filip Rembiałkowski <filip.rembialkowski@gmail.com>)
List pgsql-general

OK I have it fixed;; just for anyone who's interested - the error was in the base backup procedure.
When switched to plain "rsync -az" - it  works like a charm.

Most probably, the fault was I assumed that you can use the rsync --update option when doing base backup.
You cannot, especially when time sync on both servers is not accurate. In my case, destination server clock was few minutes in future.
So the pg_clog was broken due to this. Which means a completely corrupted database.

thanks Stephen & Andres for your responses.



On Mon, Feb 25, 2019 at 8:06 PM Filip Rembiałkowski <filip.rembialkowski@gmail.com> wrote:
Hi.

There is a large (>5T) database on PostgreSQL 9.0.23.

I would like to setup new WAL-shipping standby.
https://www.postgresql.org/docs/9.0/warm-standby.html

On my way I find unexpected issues. Here's the story, in short:

1. WAL archiving to remote archive is setup & verified

2. base backup is transferred directly to new server using
pg_start_backup + rsync + pg_stop_backup.

3. recovery.conf is created

4. Server is started and consumes all the remaining WAL segments
accumulated in the archive - finishing with optimistic message LOG:
consistent recovery state reached at 9FC1/112BEE10.

5. When I go to postgres on the standby and try to connect system
"postgres" database psql: FATAL:  could not open file "global/11819":
No such file or directory

I guessed the OID refereds to the pg_authid, but other system tables
might be affected too.

What could be wrong here?

Thanks!

pgsql-general by date:

Previous
From: Tom Lane
Date:
Subject: Re: Why can I not get lexemes for Hebrew but can get them for Armenian?
Next
From: Michael Lewis
Date:
Subject: Re: idle_in_transaction_session_timeout for a set of SQL statements