On Tue, Aug 24, 2004 at 12:05:33AM +0200, Gaetano Mendola wrote: > Simon Riggs wrote: > > >As a result, I have thought that there may be a way to remove those pages > >from the xlog files immediately before being copied away to archive, > >without effecting crash recovery logic AT ALL. > > So this means that the way to have an "hot spare" postgres that play > the logs while are arriving is not applicable anymore ?
No, it doesn't. Your scheme can still work; it will just have less work to do. Basically the point here is skipping the restoration of whole pages. In a non-crashed scenario there's no need to restore them, because it is only used if the system happenned to crash while there was a write in progress. Supposedly this cannot happen on your hot-spare system. -- Alvaro Herrera (<alvherre[a]dcc.uchile.cl>) "La persona que no quería pecar / estaba obligada a sentarse en duras y empinadas sillas / desprovistas, por cierto de blandos atenuantes" (Patricio Vogel) ---------------------------(end of broadcast)--------------------------- TIP 8: explain analyze is your friend
