On 07/23/2017 04:25 PM, G Crowe wrote:
Hi, I am trying to upgrade my Xen host (Dom0) and are having troubles getting it to work.
I think that it has booted into a kernel that supports Xen (running 'xl info' does list some Xen capabilities), but I have three problems (that I have found so far).
Firstly, the "libvirtd" daemon doesn't start on bootup (and as a result all 'virsh' commands fail). It is set to auto-start (systemctl enable libvirtd), and can be manually started (systemctl start libvirtd), but it will not auto-start on reboot.
Secondly, Once I have manually started libvirtd, when I try to define a domain it gives me an error "could not find capabilities for arch=x86_64 domaintype=xen" and I haven't yet been able to define any domains. This domain type works fine on Fedora 21.
Thirdly, I am unable to convert to/from xml config format, it gives me the error "error: invalid argument: unsupported config type xen-xl" however the format "xen-xl" works fine on the Fedora 21 machine.
It sounds like the libvirt libxl driver is not loaded. Is the libvirt-daemon-driver-libxl package installed? If it's installed, enabling debug logging in libvirtd can provide hints why it is not loading http://libvirt.org/logging.html Regards, Jim
I had these same issues when I tried to upgrade to Fedora 25 and assumed that something had been broken and so abandoned further attempts to upgrade, however since Fedora 26 is the same I am now assuming that I have stuffed something up myself (or missed something).
Fedora 21 uses kernel 3.19.3 and xen 4.4.1 Fedora 26 uses kernel 4.11.8 and xen 4.8.1
I have tried following the info on https://wiki.xen.org/wiki/Fedora_Host_Installation but it appears to be out of date now (I used this site when I started using Xen under Fedora 19, and when I upgraded to Fedora 21)
Does anyone have any suggestions? outputs from "xl info" and the domain config are below. I have also tried disabling SELinux, but it made no difference.
Thanks
GC
----------------------------------------------- On the fedora 26 box..... # xl info host : family.mydomain.mytld release : 4.11.8-300.fc26.x86_64 version : #1 SMP Thu Jun 29 20:09:48 UTC 2017 machine : x86_64 nr_cpus : 4 max_cpu_id : 3 nr_nodes : 1 cores_per_socket : 4 threads_per_core : 1 cpu_mhz : 2712 hw_caps : b7ebfbff:77faf3bf:2c100800:00000121:0000000f:009c67af:00000000:00000100 virt_caps : hvm hvm_directio total_memory : 8072 free_memory : 128 sharing_freed_memory : 0 sharing_used_memory : 0 outstanding_claims : 0 free_cpus : 0 xen_major : 4 xen_minor : 8 xen_extra : .1 xen_version : 4.8.1 xen_caps : xen-3.0-x86_64 xen-3.0-x86_32p hvm-3.0-x86_32 hvm-3.0-x86_32p hvm-3.0-x86_64 xen_scheduler : credit xen_pagesize : 4096 platform_params : virt_start=0xffff800000000000 xen_changeset : xen_commandline : placeholder cc_compiler : gcc (GCC) 7.0.1 20170421 (Red Hat 7.0.1-0.15) cc_compile_by : mockbuild cc_compile_domain : [unknown] cc_compile_date : Wed May 3 21:23:49 UTC 2017 build_id : 1c6e5a40165e05837303942b54757ae1f2d5033d xend_config_format : 4
--------------------------------------------------- # cat vmtest.xml <domain type='xen' id='21'> <name>testVM</name> <memory unit='KiB'>2097152</memory> <currentMemory unit='KiB'>2097152</currentMemory> <vcpu placement='static'>1</vcpu> <os> <type arch='x86_64' machine='xenfv'>hvm</type> <loader type='rom'>/usr/lib/xen/boot/hvmloader</loader> <boot dev='network'/> </os> <features> <acpi/> <apic/> <pae/> </features> <clock offset='variable' adjustment='0' basis='utc'/> <on_poweroff>destroy</on_poweroff> <on_reboot>restart</on_reboot> <on_crash>restart</on_crash> <devices> <interface type='bridge'> <mac address='02:02:00:03:00:00'/> <source bridge='enp1s0'/> <script path='vif-bridge'/> </interface> <serial type='pty'> <target port='0'/> </serial> <console type='pty'> <target type='serial' port='0'/> </console> <input type='mouse' bus='ps2'/> <input type='keyboard' bus='ps2'/> <graphics type='vnc' port='5901' autoport='no' listen='192.168.131.54'> <listen type='address' address='192.168.131.54'/> </graphics> </devices> </domain>
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