ohh I forgot to mention that I haven't installed the plain ubuntu 20.04,but
the ubuntu 20.04 cinnamon remix version.

Il giorno mer 28 ott 2020 alle ore 12:47 Mario Marietto <
<email address hidden>> ha scritto:

> I've installed a fresh copy of ubuntu 20.04 ; I have upgraded it to 20.10
> ; I have installed all the relevant packages for xen,libvirt and kvm and
> boom : it worked.
>
> Il giorno mer 28 ott 2020 alle ore 10:50 Stefan Bader <
> <email address hidden>> ha scritto:
>
>> On 27.10.20 15:36, Christian Ehrhardt wrote:
>> > @smb do you see anything like this in 20.10?
>> >
>> I can not remember for sure. I believe I had some guest up via libvirt.
>> But
>> probably not with the final kernel.
>>
>> --
>> You received this bug notification because you are subscribed to the bug
>> report.
>> https://bugs.launchpad.net/bugs/1901398
>>
>> Title:
>>   Unable to configure libxl's memory management parameters
>>
>> Status in libvirt package in Ubuntu:
>>   New
>>
>> Bug description:
>>   Hello.
>>
>>   Yesterday I've upgraded ubuntu 20.04 to 20.10 and I have soon realized
>>   that libvirt stopped working with xen. Xen itself works ok for me,as u
>>   can see :
>>
>>   root@ziomario-z390aoruspro:/etc/xen# xl list
>>   Name                                        ID   Mem VCPUs State Time(s)
>>   Domain-0                                     0 32065    16     r-----
>>    435.8
>>
>>   but it does not with libvirt :
>>
>>   root@ziomario-z390aoruspro:/etc/xen# virsh pool-list --all
>>   error: failed to connect to the hypervisor
>>   error: Failed to connect socket to '/var/run/libvirt/libvirt-sock':
>> Connection denied
>>
>>   this is what happens when I query for the status :
>>
>>   root@ziomario-z390aoruspro:/etc/xen# sudo systemctl status
>> libvirtd.service
>>   ● libvirtd.service - Virtualization daemon
>>        Loaded: loaded (/lib/systemd/system/libvirtd.service; enabled;
>> vendor preset: enabled)
>>        Active: inactive (dead) since Sun 2020-10-25 12:11:43 CET; 41s ago
>>   TriggeredBy: ● libvirtd.socket
>>                ● libvirtd-ro.socket
>>                ● libvirtd-admin.socket
>>          Docs: man:libvirtd(8)
>>                https://libvirt.org
>>       Process: 4283 ExecStart=/usr/sbin/libvirtd $libvirtd_opts
>> (code=exited, status=0/SUCCESS)
>>      Main PID: 4283 (code=exited, status=0/SUCCESS)
>>         Tasks: 2 (limit: 32768)
>>        Memory: 28.2M
>>        CGroup: /system.slice/libvirtd.service
>>                ├─1577 /usr/sbin/dnsmasq
>> --conf-file=/var/lib/libvirt/dnsmasq/default.conf --leasefile-ro
>> --dhcp-script=/usr/lib/libvirt/libvirt_leaseshelper
>>                └─1578 /usr/sbin/dnsmasq
>> --conf-file=/var/lib/libvirt/dnsmasq/default.conf --leasefile-ro
>> --dhcp-script=/usr/lib/libvirt/libvirt_leaseshelper
>>
>>   ott 25 12:11:43 ziomario-z390aoruspro dnsmasq[1577]: read
>> /var/lib/libvirt/dnsmasq/default.addnhosts - 0 addresses
>>   ott 25 12:11:43 ziomario-z390aoruspro dnsmasq-dhcp[1577]: read
>> /var/lib/libvirt/dnsmasq/default.hostsfile
>>   ott 25 12:11:43 ziomario-z390aoruspro libvirtd[4283]: libvirt version:
>> 6.6.0, package: 1ubuntu3 (Christian Ehrhardt <
>> <email address hidden>> Thu, 08 Oct 2020 07:3>
>>   ott 25 12:11:43 ziomario-z390aoruspro libvirtd[4283]: hostname:
>> ziomario-z390aoruspro
>>   ott 25 12:11:43 ziomario-z390aoruspro libvirtd[4283]: Unable to
>> configure libxl's memory management parameters
>>   ott 25 12:11:43 ziomario-z390aoruspro libvirtd[4283]: Initialization of
>> Xen state driver failed: no error
>>   ott 25 12:11:43 ziomario-z390aoruspro libvirtd[4283]: Driver state
>> initialization failed
>>   ott 25 12:11:43 ziomario-z390aoruspro systemd[1]: libvirtd.service:
>> Succeeded.
>>   ott 25 12:11:43 ziomario-z390aoruspro systemd[1]: libvirtd.service:
>> Unit process 1577 (dnsmasq) remains running after unit stopped.
>>   ott 25 12:11:43 ziomario-z390aoruspro systemd[1]: libvirtd.service:
>> Unit process 1578 (dnsmasq) remains running after unit stopped.
>>
>>
>>   if xen works without libvirt AND it does not work with Libvirt,it is a
>> bug of libvirt. I dind't see this behavior with ubuntu 20.04 ; so it is a
>> bug of ubuntu 20.10. do u want to give a look ?
>>
>> To manage notifications about this bug go to:
>>
>> https://bugs.launchpad.net/ubuntu/+source/libvirt/+bug/1901398/+subscriptions
>>
>
>
> --
> Mario.
>


-- 
Mario.