Re: Postgres Backup Questions

John,

We accomplished this using an inline filter to capture the
checksum and size for the entire dump to tape. Then we re-read
the tape to see if the tape generated the same checksum and size.
That is probably about a good as you are going to get.

Ken

On Thu, Jun 01, 2006 at 01:57:07PM -0400, John R. Allgood wrote:
> Hey Again
>
> Thanks for the input. but what I am wanting to check for is CRC
> errors and block errors. The backups are written to tape and I would
> like a way to verify the data on the tape as compared to the data on the
> server. I may be way off here but I just want to be sure I am getting
> reliable backups.
>
> Thanks
>
> Scott Marlowe wrote:
> >On Thu, 2006-06-01 at 10:15, John R. Allgood wrote:
> >
> >>Hello
> >>
> >> I have a question regarding backups on Postgresql 7.4.7-2. We are
> >>currently using a Progress database and will be moving over to Postgres
> >>this month. In Progress there is a way to verify your backups does
> >>Postgres have anything similiar or is there other ways to accompplish
> >>this. I am currently writing backup and other utility scripts and would
> >>like to incorporate this into my program.
> >>
> >
> >I wrapped my backup in a bash script, and that seems to catch errors.
> >something like:
> >
> >if !(
> > /data01/pg/bin/pg_dump dbname > dbname.sql
> > );
> >then
> > cat "backup failed"|mail -s "backup failed" yourname(at)yourdomain(dot)com;
> >fi
> >
> >To test this, I corrupted a table in a test database to force a hard
> >failure, and it sent an email. Don't know if it's a comprehensive test,
> >but it seems to work for us.
> >
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