I was running postgres 8.4 on arch but now have 9 installed I want to use
pg_upgrade to upgrade but I don't know what all the options I have to use are, and all the directories that I have to point it to. I think it asks for a previous pg binary directory... but that's gone. Will it still work?
I've no important data, just play db's I just want to know how to do it. I also realize this is borderline serverfault, but I feel it has as much to do with arch's install process and paths, so I thought I'd ask here.