[SOLVED] Xen and paravirtualized domU: none works, how to debug?

camerabambai · 12-24-2021, 04:25 PM

I want to install a paravirt domU on a dom0 Debian host.
Debian is 11 bullseye
guest domU is Opensuse 15.3 paravirt.
I try the virt-manager way wizard(create vm, etc..) and this cli

Code:

virt-install --connect xen:// --paravirt --name samba2 --ram 2048 --vcpus 1 --disk /var/lib/libvirt/images/samba2.qcow2,size=60,format=qcow2  --network bridge=br1 --location https://fedora.mirror.garr.it/fedora/linux/releases/35/Everything/x86_64/os/ --extra-args="text console=com1 utf8 console=hvc0"

The virt-manager way seem's to works but at the bootloader installer fails with error libxenlight failed to create new domain or something similar.

The virt-install way give me this error

Code:

ERROR    internal error: libxenlight failed to create new domain 'samba2'

on logfiles I see

Code:

Traceback (most recent call last):
  File "/usr/lib/xen-4.14/bin/pygrub", line 884, in <module>
    raise RuntimeError("Unable to find partition containing kernel")
RuntimeError: Unable to find partition containing kernel

I heard somewhere that pygrub give problems with brtfs, is a problem of dom0 or domU? I install dom0 in a classical way(mdadm+lvm+ext4), opensuse use btrfs as default, I have to change it?

camerabambai · 12-24-2021, 05:26 PM

Some progress, using a vmlinuz kernel and initrd image works(the vm finally start), but on console I see only this

Code:

[  OK  ] Finished Apply Kernel Variables.
[    3.300602] systemd[1]: Finished dracut ask for additional cmdline parameters.
[  OK  ] Finished dracut ask for additional cmdline parameters.
[    3.303150] systemd[1]: Starting dracut cmdline hook...
         Starting dracut cmdline hook...
[    3.320347] systemd[1]: Started Journal Service.
[  OK  ] Started Journal Service.
         Starting Create Volatile Files and Directories...
[  OK  ] Finished Create Volatile Files and Directories.
[    3.551749] clocksource: tsc: mask: 0xffffffffffffffff max_cycles: 0x211400f960c, max_idle_ns: 440795231420 ns
[  OK  ] Finished dracut cmdline hook.
         Starting dracut pre-udev hook...
[  OK  ] Finished dracut pre-udev hook.
         Starting Rule-based Manage…for Device Events and Files...
[  OK  ] Started Rule-based Manager for Device Events and Files.
         Starting dracut pre-trigger hook...
[  OK  ] Finished dracut pre-trigger hook.
         Starting Coldplug All udev Devices...
[  OK  ] Finished Coldplug All udev Devices.
[  OK  ] Reached target System Initialization.
         Starting dracut initqueue hook...
         Starting Show Plymouth Boot Screen...
[  OK  ] Started Show Plymouth Boot Screen.
[  OK  ] Started Forward Password R…s to Plymouth Directory Watch.
[  OK  ] Reached target Paths.
[  OK  ] Reached target Basic System.
[    6.378917] random: crng init done
[    6.378939] random: 7 urandom warning(s) missed due to ratelimiting

and no login

EDIT: SOLVED, I have copied a wrong kernel image and wrong initrd, with the correct files the vm finally start.