"Andrew L. Gould" <[EMAIL PROTECTED]> writes:
> I've been backing up my databases by piping pg_dump into gzip and 
> burning the resulting files to a DVD-R.  Unfortunately, FreeBSD has 
> problems dealing with very large files (>1GB?) on DVD media.  One of my 
> compressed database backups is greater than 1GB; and the results of a 
> gzipped pg_dumpall is approximately 3.5GB.  The processes for creating 
> the iso image and burning the image to DVD-R finish without any 
> problems; but the resulting file is unreadable/unusable.

Yech.  However, I think you are reinventing the wheel in your proposed
solution.  Why not just use split(1) to divide the output of pg_dump or
pg_dumpall into slices that the DVD software won't choke on?  See
notes at
http://developer.postgresql.org/docs/postgres/backup.html#BACKUP-DUMP-LARGE

                        regards, tom lane

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