Re: AW: error: not xen image / you need to load the kernel first

[CamZie <camzie@xxxxxxxxxxxxxx>]

Hello Klaus,

Thanks for the tip.

I had a look at the kernel and it looks like it is using the LZ4 compression and not zstd:

$ cat /usr/src/linux-headers-5.4.0-156-generic/.config | grep CONFIG_KERNEL
# CONFIG_KERNEL_GZIP is not set
# CONFIG_KERNEL_BZIP2 is not set
# CONFIG_KERNEL_LZMA is not set
# CONFIG_KERNEL_XZ is not set
# CONFIG_KERNEL_LZO is not set
CONFIG_KERNEL_LZ4=y

initrd.img-5.4.0-156-generic: LZ4 compressed data (v0.1-v0.9)

We tested installation with Debian 12 and experienced no problems. It is somehow only Ubuntu 20.04 installation that has problems loading the new kernel.

------- Original Message -------
On Thursday, August 17th, 2023 at 10:29 PM, Klaus Darilion klaus.darilion@xxxxxx wrote:

Maybe this 5.4 kernel uses zstd compression, which is not supported by xen 4.14. Xen 4.15 (deb12) supports zstd compressed kernels.

regards
Klaus

-----Ursprüngliche Nachricht-----
Von: Xen-users xen-users-bounces@xxxxxxxxxxxxxxxxxxxx Im Auftrag von
CamZie
Gesendet: Donnerstag, 17. August 2023 10:54
An: xen-users@xxxxxxxxxxxxxxxxxxxx
Betreff: error: not xen image / you need to load the kernel first

Hello,

We are having problems booting Ubuntu 20.04 installation with the newest
kernel "5.4.0-156-generic" on our Ganeti (Xen) server.

We get the following error message everytime we boot the newest kernel:

error: not xen image.
error: you need to load the kernel first.

Using an older kernel "4.15.0-20-generic" works fine.

Ganeti (Xen) server:

* OS: Debian 11.7
* Ganeti version: 3.0.2-1~deb11u1
* Xen Hypervisor: 4.14.5+94-ge49571868d-1

Does anyone experience the same issue?

Thanks in advance.