[libvirt-users] Fedora 19/20 new install :Unable to create vcpu cgroup

[Patrick Chemla]

Hi

I have reinstall Fedora 20 from distrib. I have run yum update and yum 
upgrade.

Running kernel is : 3.14.7-200.fc20.x86_64

Installed Libvirt packages are:
libvirt-client-1.1.3.5-2.fc20.x86_64
libvirt-daemon-1.1.3.5-2.fc20.x86_64
libvirt-daemon-config-network-1.1.3.5-2.fc20.x86_64
libvirt-daemon-driver-interface-1.1.3.5-2.fc20.x86_64
libvirt-daemon-driver-network-1.1.3.5-2.fc20.x86_64
libvirt-daemon-driver-nodedev-1.1.3.5-2.fc20.x86_64
libvirt-daemon-driver-nwfilter-1.1.3.5-2.fc20.x86_64
libvirt-daemon-driver-qemu-1.1.3.5-2.fc20.x86_64
libvirt-daemon-driver-secret-1.1.3.5-2.fc20.x86_64
libvirt-daemon-driver-storage-1.1.3.5-2.fc20.x86_64
libvirt-daemon-kvm-1.1.3.5-2.fc20.x86_64
libvirt-glib-0.1.7-2.fc20.x86_64
libvirt-python-1.1.3.5-2.fc20.x86_64

When trying to create a new VM using virt-manager I am getting :

Impossible de terminer l'installation : « internal error: process exited 
while connecting to monitor: Failed to create chardev
  »

Traceback (most recent call last):
   File "/usr/share/virt-manager/virtManager/asyncjob.py", line 91, in 
cb_wrapper
     callback(asyncjob, *args, **kwargs)
   File "/usr/share/virt-manager/virtManager/create.py", line 1787, in 
do_install
     guest.start_install(meter=meter)
   File "/usr/share/virt-manager/virtinst/guest.py", line 403, in 
start_install
     noboot)
   File "/usr/share/virt-manager/virtinst/guest.py", line 467, in 
_create_guest
     dom = self.conn.createLinux(start_xml or final_xml, 0)
   File "/usr/lib64/python2.7/site-packages/libvirt.py", line 2897, in 
createLinux
     if ret is None:raise libvirtError('virDomainCreateLinux() failed', 
conn=self)
libvirtError: internal error: process exited while connecting to 
monitor: Failed to create chardev


When tyring to create new VM with virt-install, I am getting:

virt-install --name eff1 --disk /home/kvmimages/eff1.img  --cdrom 
/home/kvmimages/Fedora-20-x86_64-DVD.iso --memory 4096B
ERROR    Error: --memory 4096B: invalid literal for int() with base 10: 
'4096B'
[root at eff1 kvmimages]# virt-install --name eff1 --disk 
/home/kvmimages/eff1.img  --cdrom 
/home/kvmimages/Fedora-20-x86_64-DVD.iso --memory 4096
WARNING  CDROM media does not print to the text console by default, so 
you likely will not see text install output. You might want to use 
--location.

Début d'installation...
ERROR    internal error: process exited while connecting to monitor: 
Failed to create chardev


When trying to run with virt-manager a VM created on another F20 server:

Erreur lors du démarrage du domaine: internal error: process exited 
while connecting to monitor: Failed to create chardev


Traceback (most recent call last):
   File "/usr/share/virt-manager/virtManager/asyncjob.py", line 91, in 
cb_wrapper
     callback(asyncjob, *args, **kwargs)
   File "/usr/share/virt-manager/virtManager/asyncjob.py", line 127, in 
tmpcb
     callback(*args, **kwargs)
   File "/usr/share/virt-manager/virtManager/domain.py", line 1355, in 
startup
     self._backend.create()
   File "/usr/lib64/python2.7/site-packages/libvirt.py", line 708, in create
     if ret == -1: raise libvirtError ('virDomainCreate() failed', dom=self)
libvirtError: internal error: process exited while connecting to 
monitor: Failed to create chardev


What is this chardev error?

May someone help.

Thanks
Patrick


Le 12/06/2014 19:06, Kashyap Chamarthy a écrit :
> On Thu, Jun 12, 2014 at 01:01:18PM +0300, Patrick Chemla wrote:
>> Hi,
>>
>> After full new install of Fedora 19 or 20, I am getting this when I want to
>> create a new VMs.
> FWIW, I'm able to create new unattended Fedora 20 VMs just fine with a
> script like that[1] which uses virt-install. To invoke the script:
>
>      $ ./create-guest-qcow2.bash f20vm1 f20 x86_64
>
>
> Or you can try trivially install guests with a tool like virt-builder.
> To install a Fedora 20 guest and update to latest available packages:
>
>      $ virt-builder fedora-20 -o f20vm1.qcow2 --update --selinux-relabel \
>        --format qcow2 --size 30G
>
> Import the guest into libvirt:
>
>     $ virt-install --name f20vm1 --ram 2048 --disk \
>        path=/home/kashyap/f20vm1.qcow2,format=qcow2 --import
>
>
>    [1] https://github.com/kashyapc/virt-scripts/blob/master/create-guest-qcow2.bash
>>
>>
>> Impossible de terminer l'installation : « Unable to create vcpu cgroup for
>> fedora20(vcpu: 0): Aucun fichier ou dossier de ce type »
>>
>> Traceback (most recent call last):
>> File "/usr/share/virt-manager/virtManager/asyncjob.py", line 91, in
>> cb_wrapper
>> callback(asyncjob, *args, **kwargs)
>> File "/usr/share/virt-manager/virtManager/create.py", line 1787, in
>> do_install
>> guest.start_install(meter=meter)
>> File "/usr/share/virt-manager/virtinst/guest.py", line 403, in start_install
>> noboot)
>> File "/usr/share/virt-manager/virtinst/guest.py", line 467, in _create_guest
>> dom = self.conn.createLinux(start_xml or final_xml, 0)
>> File "/usr/lib64/python2.7/site-packages/libvirt.py", line 2897, in
>> createLinux
>> if ret is None:raise libvirtError('virDomainCreateLinux() failed',
>> conn=self)
>> libvirtError: Unable to create vcpu cgroup for fedora20(vcpu: 0): Aucun
>> fichier ou dossier de ce type
>>
>>
>> I saw that there is no cpu mounted, only cpuacct.
>>
>> I saw on other server that cpu is a link to cpu,cpuacct
>>
>> But I can't find how to add this in a config file
>>
>> Thanks for help
>> Patrick
>>
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