On 06/26/2016 01:58 PM, Daniel Llewellyn wrote:
By putting it inside an LV you hid it from the UEFI and
thus could not boot from it.
The LV is a Dom0/Host entity. The Xen Guest's BIOS/OS does not see an
LV; it only sees an attached drive partitions,
blkid -s TYPE
/dev/xvda1: TYPE="vfat"
/dev/xvde1: TYPE="ext4"
/dev/xvdf1: TYPE="swap"
/dev/xvdg1: TYPE="ext4"
The startup.nsh file mentioned in the UEFI command-line mode is unrelated.
On an Opensuse EFI Xen Guest, the NvVars file is correctly written to
load the opensuse secure shim
efibootmgr
BootCurrent: 0009
Timeout: 0 seconds
BootOrder: 0009,0000,0001,0002,0003,0004,0005,0006,0007,0008
Boot0000* UiApp
Boot0001* UEFI Floppy
Boot0002* UEFI Floppy 2
Boot0003* UEFI QEMU HARDDISK QM00001
Boot0004* UEFI Misc Device
Boot0005* UEFI Misc Device 2
Boot0006* UEFI Misc Device 3
Boot0007* UEFI Misc Device 4
Boot0008* EFI Internal Shell
Boot0009* opensuse-secureboot
On the Ubuntu EFI Xen Guest, the post-install NvVars points to the EFI
Internal Shell as the boot item
efibootmgr
BootCurrent: 000A
Timeout: 0 seconds
BootOrder: 0000,0002,0003,0004,0005,0006,0007,0008,000A
Boot0000* UiApp
Boot0002* UEFI Floppy
Boot0003* UEFI Floppy 2
Boot0004* UEFI QEMU HARDDISK QM00001
Boot0005* UEFI Misc Device
Boot0006* UEFI Misc Device 2
Boot0007* UEFI Misc Device 3
Boot0008* UEFI Misc Device 4
Boot000A* EFI Internal Shell
With that default, adding/populating the 'startup.nsh' ensures it's
executed, and it's spec'd .efi is loaded, rather than simply dropping to
the shell itself.
The proper fix in your case is to ensure
that the EFI partition is an actual partition and not an LV, and then to
perform the install. When this is done the installer will add an entry
into the UEFI variables table which indicates which file to use for the
boot loader (i.e. grubx64.efi or shimx64.efi depending on whether the
UEFI implementation is requiring secure-boot signed files).
Again, the guest has no knowledge of the LV.
It's of note that this scenario fails uniquely on Ubuntu's install, but
works without fail on other OS, e.g. Opensuse, above.
On 06/26/2016 03:58 PM, Tom H wrote:> On Sun, Jun 26, 2016 at 11:23 AM,
PGNet Dev <[email protected]> wrote:
An EFI xen guest?! Is this even possible?
Certainly.
With qemu, you need an ovmf binary.
Xen's built with either bundled, or system, ovmf. And in the Xen guest
cfg, bios='ovmf' is specified.
Works just fine. Once properly booted, that is.
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