On 11/10/07 07:46 RW wrote: > On Wed, 10 Oct 2007 22:51:26 +0200, Tilo Stritzky wrote: > > >On 10/10/07 21:37 RW wrote: > >> Then (the devil made me do it!) I thought: Why not four OpenBSDs as in > >> Release, Release minus one, current and some experimental stuff. Just > >> multiboot to whichever and away. > >> > >> Is it at all possible? If so what is the trick? I <did> flag the new > >> MBR entry as active and I can't see anything in the docs that > >> contemplates this kind of set-up. > >> > >It's actually not very difficult but ... > >"If you have to ask, you shouldn't be doing it" > > Pushing boundaries on a machine without internet connection and (unless > it works) not a part of critical infrastructure is just fun for > learning. If it blows up an OpenBSD flush and install another way is > not exactly the punishment that Linux or Windows would inflict. > ;-) I think my dads Windoze takes more time to boot then a full OpenBSD install on my laptop.
The main reason I tried this setup was I wnted to know if its ever possible, just like you. And I was sure I would learn something interesting. Now *that* part really worked out ;) > > > > >Start your first install. Make one fdisk partition (OpenbSD type). > >disklabel as many slices as you want OpenbSD releases (plus swap, plus c). > >Install one on slice a. > > Hmmm. Right there is the showstopper. I <did> say it was so I could > build stable for at least a couple of releases. I have 9 slices on my > present builder and could probably lose a couple. but only one to build > and clean on? Not for me. I have listened to the experienced crew about > having filesystems you can just flush rather than rm -rf * on. > I feel this 'put /usr/obj on a seperate slice, newfs ...' should really go from the FAQ. release(8) shows a really nice way, which with softdep is normally faster then newfs. And even if not - it happens in the background, so what? If you have lots of RAM mem_fs is really nice (I know, I know, you haven't). Regarding the number of slices: this is weird enough as it is, a lot of slices does not make it any easier. When I tried it I had simply one slice per install and it worked. > Looks like a lost cause. I did really want to get out of all the drive > swapping with wear on the connectors (the old IDE trays at least had > rugged sockets like the old centronix ones, the SATA trays have an > edgecon and I don't rate edgecons as suitable for lots of insert/remove > cycles with a heavy mechanical load) but if it don't fly, c'est la vie. > Not to mention that computer cases have lots of really sharp edges and a proper connecter fit in the wrong place can go straight to the bone. > Thanx, > Rod > regards tilo (Who is pestering the people at his favourite bookshop for two weeks now: "Are they there yet?" "Are they there yet?" "Are they there yet?" "No, on wendsday!"
