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

[Patrick Chemla]

Thanks for your interest.

Here are the dir/files permissions for the kvmimages dir:

# ls -ld /home /home/kvmimages /home/kvmimages/*
drwxr-xr-x. 4 root root        4096 14 juin  23:05 /home
drwxrwxrwx  2 root root        4096 15 juin  09:19 /home/kvmimages
-rw-rw-rwx  1 root root 12884901888 14 juin  23:07 /home/kvmimages/eff1.img
-rw-rw-rwx  1 root root 12884901888 14 juin  23:11 /home/kvmimages/eff2.img
-rw----r-x  1 root root 12887130112 11 juin  15:51 
/home/kvmimages/effi.qcow2
-rw-r--r--  1 root root  4295884800 15 juin  09:19 /home/kvmimages/f20vm
-rw-r--r-x  1 qemu qemu  4603248640 12 déc.   2013 
/home/kvmimages/Fedora-20-x86_64-DVD.iso

As you can see, all are executabled by others.

Should I chown to qemu? or something else?

Patrick
Le 15/06/2014 11:32, Kashyap Chamarthy a écrit :
> On Sun, Jun 15, 2014 at 10:27:12AM +0300, Patrick Chemla wrote:
>
> [. . .]
>
>> I adapted your commands to my conf:
>>
>> # qemu-img create -f qcow2 -o preallocation=metadata /home/kvmimages/f20vm
>> 4G
>> Formatting '/home/kvmimages/f20vm', fmt=qcow2 size=4294967296 encryption=off
>> cluster_size=65536 preallocation='metadata' lazy_refcounts=off
>> # virt-install --name f20vm --disk /home/kvmimages/f20vm --cdrom
>> /home/kvmimages/Fedora-20-x86_64-DVD.iso --memory 2048
>> 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
>>
>> L'installation du domaine ne semble pas s'être terminée avec succès.
>> Si c'est bon, vous pouvez démarrer le domaine en lançant :
>>   virsh --connect qemu:///system start f20vm
>> sinon, recommencez l'installation.
>>
>> Always the same Failed to create chardev.
>>
>> I do think it's a problem of permission as you said, but on which
>> directory/files?
> Wherever your disk image is located (/home/kvmimages) QEMU should be
> able to access it (executable bit for 'others'). For instance, I have
> these permissions for my home directory where I store VM images:
>
>      $ ls -lash / | grep home
>      4.0K drwxr-xr-x.   7 root    root     4.0K Aug  7  2013 home
>
> Permissions on the specific directory where I store VM images
> (/home/kashyap/vmimages):
>
>      $ ls -lash /home/kashyap/ | grep vmimages
>      4.0K drwxrwxr-x.   2 kashyap kashyap 4.0K Jun 14 21:50 vmimages
>
>   
>> When I create/run a F20 VM on my local computer, it's OK. I have
>> verified rpm versions, seem OK. I have rsynced /etc/libvirt dir from
>> local computer to remote server.
>>
>> It works on my local like on yours,but not on my remote. I need the
>> remote to run VMs.
> If I'm parsing you correctly, you've SSHed into the remote machine and
> running virt-install. Like I said, if QEMU can access your home
> directory (as I noted above), where you're storing disk images, you
> shouldn't have any issues.
>
>