Zeugswetter Andreas SB SD wrote:
>
> > > I was wondering about this point - might it not be just as reasonable
> > > for the copied file to *be* an exact image of pg_control? Then a very
> > > simple variant of pg_controldata (or maybe even just adding switches to
> > > pg_controldata itself) would enable the relevant info to be extracted
> >
> > We didn't do that so admins could easily read the file contents.
>
> If you use a readable file you will also need a feature for restore (or a tool)
> to create an appropriate pg_control file, or are you intending to still require
> that pg_control be the first file backed up.
> Another possibility would be that the start function writes the readable file and
> also copies pg_control.
We will back up pg_control in the tar file but it doesn't have to have
all correct information. The WAL replay will set it properly I think.
In fact it has to start recovery checkpoint settings, not the backup
setting at all.
-- Bruce Momjian | http://candle.pha.pa.us pgman@candle.pha.pa.us | (610)
359-1001+ If your life is a hard drive, | 13 Roberts Road + Christ can be your backup. | Newtown Square,
Pennsylvania19073
