Libvirt troubles

Software & Operating Systems Linux
1

Hey. I’m trying to start a VM on Arch with libvirt. When I start up the VM, I get the following error.

Unable to complete install: ‘internal error: process exited while connecting to monitor: 2017-12-15T19:18:27.468787Z qemu-system-x86_64: -chardev pty,id=charserial0: char device redirected to /dev/pts/0 (label charserial0)
Could not access KVM kernel module: Permission denied
2017-12-15T19:18:27.468880Z qemu-system-x86_64: failed to initialize KVM: Permission denied’

Traceback (most recent call last):
File “/usr/share/virt-manager/virtManager/asyncjob.py”, line 89, in cb_wrapper
callback(asyncjob, *args, **kwargs)
File “/usr/share/virt-manager/virtManager/create.py”, line 2545, in _do_async_install
guest.start_install(meter=meter)
File “/usr/share/virt-manager/virtinst/guest.py”, line 498, in start_install
doboot, transient)
File “/usr/share/virt-manager/virtinst/guest.py”, line 434, in _create_guest
domain = self.conn.createXML(install_xml or final_xml, 0)
File “/usr/lib/python2.7/site-packages/libvirt.py”, line 3658, in createXML
if ret is None:raise libvirtError(‘virDomainCreateXML() failed’, conn=self)
libvirtError: internal error: process exited while connecting to monitor: 2017-12-15T19:18:27.468787Z qemu-system-x86_64: -chardev pty,id=charserial0: char device redirected to /dev/pts/0 (label charserial0)
Could not access KVM kernel module: Permission denied
2017-12-15T19:18:27.468880Z qemu-system-x86_64: failed to initialize KVM: Permission denied

I’m a noob and the above text means nothing to me, so can someone tell me what’s going on? Thanks!

2

Has your user been added to the appropriate libvirt group(s)? You’ll also need to log off and back on.

3

Uh, lol how do I add my user to the appropriate libvirt groups? I’ll need a p indepth explanation

4

Well, in Ubuntu you have to add yourself to the group libvirt. So you can, as root, edit your /etc/group file, find the line that looks something like,

libvirt:x:130:

and make it,

libvirt:x:130:yourusername

Then log off and back on.

Or do something like this as root,

usermod -G libvirt yourusername

There might be a specific section in the Arch wiki for this. So if you don’t seem to have a libvirt group, check it out and see if they’re doing something else with groups.

5

Okay you’re a genius. I did what you said and it’s working great now. Thanks so much dude

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