From mboxrd@z Thu Jan  1 00:00:00 1970
From: AL13N <alien@rmail.be>
Subject: Re: booting from HVM (?pv?)
Date: Tue, 25 Jun 2013 19:21:48 +0200
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References: <2868131.7MlTNbVQX4@localhost> <20130625153905.GE2924@reaktio.net>
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To: Pasi =?ISO-8859-1?Q?K=E4rkk=E4inen?= <pasik@iki.fi>
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Op dinsdag 25 juni 2013 18:39:06 schreef Pasi K=E4rkk=E4inen:
> 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 dri=
ver
> > 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 =3D [ '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=3D0|1

i'm assuming that hda (ide_generic) would be using regular emulation? and t=
he =

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)?