[Fedora-xen] [Xen-devel] Xen4.1.0 and Fedora15 Block device bug?

[Travis]

On Sat, Jul 2, 2011 at 12:15 AM, Fajar A. Nugraha <list at fajar.net> wrote:

> On Sat, Jul 2, 2011 at 10:50 AM, Travis <corasian at gmail.com> wrote:
> > I'm using HVM, and I've attached screenshots from the requested output
> > (+lspci). No other OS is giving me this problem, and
> i'm consistently able
> > to reproduce it. What's your take?
>
> So no block device detected, and no xen-related module loaded. That's
> weird.
>
> Two parts of this problem.
>
> The first part is why would the emulated block device be missing. It
> should still be there if PV drivers was not loaded.
> Are you using the same dom0 (xen and dom0 kernel) and domU config file
> for both the working F14 and F15? If yes, try:
> - "xen_emul_unplug=never" on kernel command line. See
> http://www.kernel.org/doc/Documentation/kernel-parameters.txt
> - make sure you use "hda" on domU config file
>
> Awesome, the "xen_emul_unplug=never" arg fixed it. I tossed it in and it
booted up and installed just fine. Thanks!!! And the doc you linked
is definitely going in my sysadmin toolbox. Sweet!



> Second part, F15's boot/config-2.6.38.6-26.rc1.fc15.x86_64 has these
> entries:
> CONFIG_XEN_PLATFORM_PCI=m
> CONFIG_XEN_BLKDEV_FRONTEND=m
>
> So if you could add xen-platform-pci.ko and xen-blkfront.ko to the
> install initrd, you should be able to use PV drivers directly. Not
> sure what's the easiest way to do it though (maybe unpack initrd, add
> some files, and repack it).
>

I had tried the fed15 rawhide version from fedora's virtualization-xendomu
test day (april) last night, and it includes the support (it reads the v
disk as a xen device, even) so hopefully it will be polished up (it was
quite a bit rough looking still) and pushed out in the next release/update.


>
> --
> Fajar
>
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