#635846 virt-manager: cannot create new virtual machine

#635846#5
Date:
2011-07-29 02:46:18 UTC
From:
To:
My local user belongs to the group libvirt and I launch virt-manager. I create
a new virtual machine. When I choose the default "Virtual Network (default):
NAT" and click "Finish" I receive the following stack trace.

Unable to complete install: 'internal error Process exited while reading
console log output: char device redirected to /dev/pts/8
open /dev/kvm: Permission denied
failed to initialize KVM: Operation not permitted
'
Traceback (most recent call last):
  File "/usr/share/virt-manager/virtManager/asyncjob.py", line 45, in
cb_wrapper
    callback(asyncjob, *args, **kwargs)
  File "/usr/share/virt-manager/virtManager/create.py", line 1643, in
do_install
    guest.start_install(False, meter=meter)
  File "/usr/lib/pymodules/python2.6/virtinst/Guest.py", line 1186, in
start_install
    start_xml, final_xml, is_initial)
  File "/usr/lib/pymodules/python2.6/virtinst/Guest.py", line 1245, in
_create_guest
    dom = self.conn.createLinux(start_xml or final_xml, 0)
  File "/usr/lib/python2.6/dist-packages/libvirt.py", line 1686, in createLinux
    if ret is None:raise libvirtError('virDomainCreateLinux() failed',
conn=self)
libvirtError: internal error Process exited while reading console log output:
char device redirected to /dev/pts/8
open /dev/kvm: Permission denied
failed to initialize KVM: Operation not permitted

The permissions of /dev/kvm have group rw for libvirt
crw-rw----+ 1 root libvirt 10, 232 Jul 28 12:47 /dev/kvm

If I change the permissions of /dev/kvm to 777 I can create a virtual machine.
I would prefer not to fall back to world writable permissions to make a new VM.

#635846#10
Date:
2011-07-29 07:22:39 UTC
From:
To:
severity 635846 normal
tags 635846 +unreproducible
thanks

See http://wiki.debian.org/libvirt#Bugreports.2BAC8-Debugging please.
 -- Guido