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Thread: : Checksum ERROR when restoring Online Backup

: Checksum ERROR when restoring Online Backup

From
Venkat Balaji
Date:
Hello Everyone,

I am testing the Online Backups of our production databases ( this is part of our disaster recovery plan ).

After restoring the Online Backup, we tried to bring up the cluster and ended up with the following error -

2011-09-23 07:29:04 CDT [24092]: [1-1] FATAL:  incorrect checksum in control file.

Does this message mean, the Online Backup is corrupted or invalid ?

Normally, we get recovery related error messages. This is the first time we are facing a problem like this.

Please help as this is critical for us.

Thanks
Venkat

Re: : Checksum ERROR when restoring Online Backup

From
Venkat Balaji
Date:
Apologies -

I did not mention complete details of PG and OS -

Postgres 9.0.1
Production Operating System version where Postgres is running is as follows -
Linux *prod-server* 2.6.18-194.17.1.el5 #1 SMP Mon Sep 20 07:12:06 EDT 2010 x86_64 x86_64 x86_64 GNU/Linux

The server version where I restored the production backup is as follows -
Linux *backup-server* 2.6.18-194.3.1.el5PAE #1 SMP Sun May 2 04:42:25 EDT 2010 i686 i686 i386 GNU/Linux

I read some where that, Postgres datafiles are not architecture independent. 

Please help !

Thanks
Venkat


On Fri, Sep 23, 2011 at 6:11 PM, Venkat Balaji <venkat.balaji@verse.in> wrote:
Hello Everyone,

I am testing the Online Backups of our production databases ( this is part of our disaster recovery plan ).

After restoring the Online Backup, we tried to bring up the cluster and ended up with the following error -

2011-09-23 07:29:04 CDT [24092]: [1-1] FATAL:  incorrect checksum in control file.

Does this message mean, the Online Backup is corrupted or invalid ?

Normally, we get recovery related error messages. This is the first time we are facing a problem like this.

Please help as this is critical for us.

Thanks
Venkat

Re: : Checksum ERROR when restoring Online Backup

From
Richard Huxton
Date:
On 23/09/11 13:53, Venkat Balaji wrote:
> Linux *prod-server* 2.6.18-194.17.1.el5 #1 SMP Mon Sep 20 07:12:06 EDT
> 2010 x86_64 x86_64 x86_64 GNU/Linux
>
> The server version where I restored the production backup is as follows -
> Linux *backup-server* 2.6.18-194.3.1.el5PAE #1 SMP Sun May 2 04:42:25
> EDT 2010 i686 i686 i386 GNU/Linux
>
> I read some where that, Postgres datafiles are not architecture
> independent.

They (the WAL files) are not, and it looks like you're trying to restore
a 64-bit version onto a 32-bit server. That's not going to work. A
pg_dump/restore works of course, and if you need replication then Slony
can handle this.

--
   Richard Huxton
   Archonet Ltd

Re: : Checksum ERROR when restoring Online Backup

From
Venkat Balaji
Date:
Thanks Richard !

I realized that, I was restoring on an 32 bit server. 

Regards,
Venkat

On Fri, Sep 23, 2011 at 6:59 PM, Richard Huxton <dev@archonet.com> wrote:
On 23/09/11 13:53, Venkat Balaji wrote:
Linux *prod-server* 2.6.18-194.17.1.el5 #1 SMP Mon Sep 20 07:12:06 EDT
2010 x86_64 x86_64 x86_64 GNU/Linux

The server version where I restored the production backup is as follows -
Linux *backup-server* 2.6.18-194.3.1.el5PAE #1 SMP Sun May 2 04:42:25
EDT 2010 i686 i686 i386 GNU/Linux

I read some where that, Postgres datafiles are not architecture
independent.

They (the WAL files) are not, and it looks like you're trying to restore a 64-bit version onto a 32-bit server. That's not going to work. A pg_dump/restore works of course, and if you need replication then Slony can handle this.

--
 Richard Huxton
 Archonet Ltd