Re: Can not restart postgres: Panic could not locate a valid checkpoint record

I ran the pg_resetxlog -n to test and it found the correct values.  Ran
it for real and it worked.
Thank you for the info/help
Mary Ellen

BRUSSER Michael wrote:
> Some time ago I had a similar problem with Postgresql 7.3.
> If I remember correctly running pg_resetxlog helped; check out
> http://www.postgresql.org/docs/8.3/static/app-pgresetxlog.html
>
> Michael.
>
>
> -----Original Message-----
> From: pgsql-general-owner@postgresql.org
> [mailto:pgsql-general-owner@postgresql.org] On Behalf Of Mary Ellen
> Fitzpatrick
> Sent: Tuesday, April 22, 2008 1:14 PM
> To: PGSQL General
> Subject: [GENERAL] Can not restart postgres: Panic could not locate a
> valid checkpoint record
>
> Hi,
> I am running postgres-8.1 on a Centos5 system.
> this morning when I came in there was no more disk space on the
> partition that holds pgsql: /var/lib/pgsql.
> I believe postgres had crashed at this point.  I stupidly removed all of
>
> the files under pg_xlog to create disk space.  Not knowing that those
> are the files I need to start the database.  I  quickly realized the
> error I had made and restored the  pg_xlog data/files from our system
> backup that ran at 1am last night (4/22/08).
>
> Now when I try to restart the database, I get the following error.   It
> is looking for file 000000010000001300000064, which I do not have.
>
> LOG:  database system was shut down at 2008-04-22 10:38:59 EDT
> LOG:  could not open file "pg_xlog/" (log file 19, segment 100): No such
>
> file or directory
> LOG:  invalid primary checkpoint record
> LOG:  could not open file "pg_xlog/000000010000001300000064" (log file
> 19, segment 100): No such file or directory
> LOG:  invalid secondary checkpoint record
> PANIC:  could not locate a valid checkpoint record
> LOG:  startup process (PID 6800) was terminated by signal 6
> LOG:  aborting startup due to startup process failure
> LOG:  logger shutting down
>
>
> I am in the process of having the WAL dir restored as well.  Again, in
> my haste, I deleted that dir as well.  This data will be from 4/22/08 at
>
> 1pm as well, time of the system backup.
>
>
> If I do not have the files that startup script is asking for, what is
> the best way to restart the database.
> Any advise (other than not deleting important dirs) would be greatly
> appreciated.
>
>
>

--
Thanks
Mary Ellen