Public bug reported:
The Xen server I am working on has Debian 12 as dom0. As mentioned in
the summary I am trying to install Ubuntu 22.04 server as a domU in PVH
mode.
I tested using ubuntu-22.04.4-live-server-amd64.iso.
This is the domU configuration I used. It attempts to use PVHGRUB:
name = "ubuntu-2204"
memory = 1024
maxmem = 1024
vcpus = 1
vif = [ 'bridge=xenbr0' ]
disk = [ '/root/ubuntu-22.04.4-live-server-amd64.iso,raw,xvdg,r,cdrom',
'/dev/myvg/ubuntu-2204-root,raw,xvda,rw',
'/dev/myvg/ubuntu-2204-swap,raw,xvdb,rw' ]
type = "pvh"
kernel = "/usr/lib/grub-xen/grub-i386-xen_pvh.bin"
I can see the grub menu, and I edit the first entry (Try or install
Ubuntu) by appending "console=hvc0 nosplash" to the end of the kernel
commandline.
I can then see console output scrolling past, until this point:
Begin: Running /scripts/init-premount ... done.
Begin: Mounting root file system ... Begin: Running /scripts/nfs-top ... done.
Begin: Running /scripts/nfs-premount ... done.
Begin: Running /scripts/casper-premount ... done.
done.
Unable to find a medium containing a live file system
Attempt interactive netboot from a URL?
yes no (default yes): no
BusyBox v1.30.1 (Ubuntu 1:1.30.1-7ubuntu3) built-in shell (ash)
Enter 'help' for a list of built-in commands.
(initramfs) Unable to find a medium containing a live file system
I then destroyed the domU and tried the following domU config in PV mode
instead. The kernel and ramdisk were extracted from the ISO:
name = "ubuntu-2204"
memory = 1024
maxmem = 1024
vcpus = 1
vif = [ 'bridge=xenbr0' ]
disk = [ '/root/ubuntu-22.04.4-live-server-amd64.iso,raw,xvdg,r,cdrom',
'/dev/myvg/ubuntu-2204-root,raw,xvda,rw',
'/dev/myvg/ubuntu-2204-swap,raw,xvdb,rw' ]
type = "pv"
kernel = "/root/ubuntu-2204-vmlinuz"
ramdisk = "/root/ubuntu-2204-initrd"
extra = "console=hvc0 nosplash"
The above config allows me to install the OS successfully over the
serial console using the standard server installer. After installation
is complete, I can boot the newly installed VM with PVHGRUB in PVH mode
using this config:
name = "ubuntu-2204"
memory = 1024
maxmem = 1024
vcpus = 1
vif = [ 'bridge=xenbr0' ]
disk = [ '/dev/myvg/ubuntu-2204-root,raw,xvda,rw',
'/dev/myvg/ubuntu-2204-swap,raw,xvdb,rw' ]
type = "pvh"
kernel = "/usr/lib/grub-xen/grub-i386-xen_pvh.bin"
I expected to be able to install the Ubuntu 22.04 domU in PVH mode with
PVHGRUB.
Instead I had to install the Ubuntu 22.04 domU in PV mode as described
above. It was only after successful installation in PV mode, that I
could boot the installed domU in PVH mode.
** Affects: xen (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/2063821
Title:
Ubuntu 22.04 server installer doesn't boot on Xen server as domU in
PVH mode
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