Re: [Xen-devel] PVM guests and p[yv]grub and the extra= parameter

[Samuel Thibault <samuel.thibault@xxxxxxxxxxxxx>]

Dan Magenheimer, le Wed 16 Jul 2008 06:35:47 -0600, a écrit :
> > > Another possibility would be to provide the menu.lst as a 
> > ramdisk.  We
> > > keep the confinment of grub inside the domain, but still 
> > provide full
> > > configurability.
> > 
> > That's a neat solution.  Still not as clean as an extra=
> > vm.cfg parameter though.  (Think about instructing a novice
> > user over the phone how to construct a grub.conf file from
> > scratch!)  But it's much better than the other alternatives.
> 
> Thinking about this a bit more, were you thinking about
> thh vm config file providing a file name on the dom0
> filesystem?  Or providing the entire menu.lst file in
> the vm config file.  Or either?

The latter.

> It would be neat if you could put in the vm config file
> something like (as a contrived example):
> 
> bootconfig="
> default=0
> timeout=10
> title Linux 2.6.25
>       kernel /vmlinuz-2.6.25 ro root=xxx
>       initrd /initrd-2.6.25.img
> title Linux 2.6.25
>       kernel /vmlinuz-2.6.25 ro root=xxx debug
>       initrd /initrd-2.6.25.img
> "
> 
> Then you could just tell a customer to change
> default=0 to default=1, or change debug to,
> for example, clock=pit, or whatever.

You can obtain that by putting that into a dom0 file and referencing it
from the ramdisk option (the name becomes a bit unfortunate...)

Samuel

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