Help please, problem with xen domU guest on rockpro64 pine64 v2.1

[mrc1965]

Hi all,

I'm facing two kind of problem trying to create a Xen guest domain on pine64.

I have successfully built uboot, xen (4.14.4) and dom0 linux kernel with xen tool stack, these two last starting from buildroot (with linux kernel version 5.15.33 and xen toolstack version 4.14.4)

These are the process of Xen:
177 root    /usr/sbin/xenwatchdogd 30 15
203 root    /usr/sbin/xenstored --pid-file /var/run/xen/xenstored.pid
208 root    /usr/sbin/xenconsoled --pid-file=/var/run/xen/xenconsoled.pid
214 root    /usr/lib/xen/bin/qemu-system-i386 -xen-domid 0 -xen-attach -name dom0 -nographic -M xenpv -daemonize -monitor /dev/null -serial/dev/nul -parallel/dev/null -pidfile/var/run/xen/qemu-dom0.pid


and the driver loaded as a module:
# lsmod
Module                  Size  Used by    Tainted: G 
xen_netback            65536  0
xen_blkback            49152  0


Xen and dom0 Image boot up successfully, at the end:
================================================
>xl list
Name                                        ID  Mem VCPUs State Time(s)
Domain-0                                    0  1024    2    r-----    4000.3


# uname -a
Linux rockpro64 5.15.33 #3 SMP PREEMPT Fri Apr 15 11:01:37 CEST 2022 aarch64 GNU/Linux
================================================

when I try to create a domU domain I have problem with disk backend, I have made several attempts trying with different domU linux and I always get the following error :

================================================
Parsing config from ./alpine_xen_domu.config
libxl: error: libxl_aoutils.c:539:async_exec_timeout: killing execution of /etc/xen/scripts/block add because of timeout
libxl: error: libxl_create.c:1608:domcreate_launch_dm: Domain 2:unable to add disk devices
libxl: error: libxl_aoutils.c:539:async_exec_timeout: killing execution of /etc/xen/scripts/block remove because of timeout
libxl: error: libxl_domain.c:1182:libxl__destroy_domid: Domain 2:Non-existant domain
libxl: error: libxl_domain.c:1136:domain_destroy_callback: Domain 2:Unable to destroy guest
libxl: error: libxl_domain.c:1063:domain_destroy_cb: Domain 2estruction of domain failed

================================================

The last try was with alpine domU linux with the following config:
================================================
# Alpine Linux PV DomU
# Kernel paths for install
kernel = "/home/xen/vmlinuz-virt"
ramdisk = "/home/xen/initramfs-virt"
extra="modules=loop,squashfs console=hvc0"
# Path to HDD and iso file
disk = [ 'format=raw, vdev=xvda, access=w, target=/data/a1.img',
        'format=raw, vdev=xvdc, access=r, devtype=cdrom, target=/home/xen/alpine-virt-3.15.3-armv7.iso'  ]
# Network configuration                                         
vif = ['bridge=br0'] 
# DomU settings                                                               
memory = 512                                                                   
name = "alpine-a1"                                                             
vcpus = 1                                                                     
maxvcpus = 1


================================================

thanks a lot in advance
Best regards
Marco

[vanessadonald]

Hi,
The error message you provided indicates a problem with the disk backend. I think you should check disk backend configuration. Make sure that the disk backend configuration in your domU configuration file is correct. Verify that the disk paths, formats, and access settings are accurate. Also, ensure that the disk files exist in the specified locations.
only up