[Pkg-xen-devel] Bug#784810: Bug#784810: Bug#784810: Xen domU try ton access to dom0 LVM Volume group

[Ian Campbell]

On Sat, 2015-05-09 at 14:07 +0200, Romain Mourier wrote:
> On 09/05/2015 13:25, Ian Campbell wrote:
> > On Sat, 2015-05-09 at 03:41 +0200, Romain Mourier wrote:
> > [...]
> >>     xen-create-image --hostname=test0 --lvm=raid10 --fs=ext4
> >> --bridge=br-lan --dhcp --dist=jessie
> > [...]
> >> root at hv0:~# xl create /etc/xen/test0.cfg && xl console test0
> > What does /etc/xen/test0.cfg contain? I suspect it is reusing the dom0
> > initramfs and hence has inherited some sort of hook script which insists
> > on the RAID stuff being present.
> That what I suspect too.
> 
> It contains :
> 
> ~# grep -v ^\# /etc/xen/test0.cfg | sed '/^$/d'
> kernel      = '/boot/vmlinuz-3.16.0-4-amd64'
> extra       = 'elevator=noop'
> ramdisk     = '/boot/initrd.img-3.16.0-4-amd64'

This is using the host initrd, hence the issue you are seeing.

> vcpus       = '1'
> memory      = '128'
> root        = '/dev/xvda2 ro'
> disk        = [
>                   'phy:/dev/raid10/test0-disk,xvda2,w',
>                   'phy:/dev/raid10/test0-swap,xvda1,w',
>               ]
> name        = 'test0'
> dhcp        = 'dhcp'
> vif         = [ 'mac=00:16:3E:8C:49:68,bridge=br-lan' ]
> on_poweroff = 'destroy'
> on_reboot   = 'restart'
> on_crash    = 'restart'
> > That would be a bug in either xen-create-image or something relating to
> > initramfs generation (initramfs-tools or some raid related hook file
> > provided by whatever package provides such things).
> Do I need to open and other bug report with different package ?

No, I'll reassign this one for you. Lets start with xen-create-image and
they can pass it on to the initramfs folks if they believe it belongs
there.

What version of xen-tools do you have installed? I'll include that in
the reassignment.

> > Note that xen-create-image is a separate project/package from xen
> > itself. (As are initramfs-tools etc obviously).
> >
> > [...]
> >> [    0.000000] Command line: root=/dev/xvda2 ro elevator=noop
> > [...]
> >>   Volume group "SSD-RAID1" not found
> >>   Skipping volume group SSD-RAID1
> >> Unable to find LVM volume SSD-RAID1/swap
> > Ian.
> Thank you for your reply,
> 
> Romain.
> 
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