Re: booting from HVM (?pv?)

[AL13N <alien@rmail.be>]

Op dinsdag 25 juni 2013 18:39:06 schreef Pasi Kärkkäinen:
> On Mon, Jun 24, 2013 at 10:21:48PM +0200, AL13N wrote:
> > Hi,
> > 
> > I'm the Mageia XEN packager and during QA, we stumbled into a problem.
> > 
> > in fact, we wanted to test Mageia 3 installation on a HVM.
> > 
> > so, we had a sparse image and a iso file:
> > 
> > [ 'file:/opt/testhvm.img,sda,w', 'file:/opt/mageialive.iso,hdb:cdrom,r' ]
> > 
> > the live booted, and was able to install to disk, but it never seemed to
> > boot after the install... (for some reason)
> > 
> > in the end, this "worked" when we changed to:
> > 
> > [ 'file:/opt/testhvm.img,xvda,w', 'file:/opt/testhvm.img,sda,w' ]
> > 
> > apparently 'xvda' to get grub to boot the kernel; and 'sda' so that it
> > could start...
> > 
> > 
> > any idea as to why it can't be booted with sda? is there a specific driver
> > missing?
> 
> See here for more info:
> http://wiki.xen.org/wiki/Xen_Linux_PV_on_HVM_drivers
> 
> This config works for both HVM and PVHVM:
> disk = [ 'phy:/dev/vg01/f16pvhvm-disk0,hda,w',
> 'file:/root/iso/Fedora-16-x86_64-DVD.iso,hdc:cdrom,r' ]
> 
> You can enable or disable PV drivers with:
> xen_platform_pci=0|1

i'm assuming that hda (ide_generic) would be using regular emulation? and the 
pv driver (xenblk_front) could be hda, sda, or xvda and it will choose the one 
you've chosen in the config? (via xen_platform_pci)?