KVM-Qemu could not open disk image - [SOLVED]

[Aaron Siegel]

Hello

The problem is related to the permission on my zfs partitions. I was
able to create a working virtual machine on the /tmp file system witch
was a LVM partition.  All attempts to create a virtual machine on a zfs
filesystem produced the following error. 
   
   "could not open diskimage /var/lib/libvirt/images/test.img:     
    Could not open file: Invalid argument

The problem has not been solved but the discussion will be moved to a
different mailing list. The resolution for now will be to move all
virtual machines from a zfs filesystem. It makes sense there is no
advantage to using zfs for storing virtual machine and LVM is better
supported. The solution may be found in the how the zfs has been
integrated into Linux a problem with selinux or setting permission on
zfs filesystem. This issue may be related to qemu and zfs. The
discussion will be moved to a zfs mailing list after I perform some
research.

Thank you Ron de Kuijer for your contribution.

Aaron

On Mon, 2014-07-14 at 18:32 -0600, Aaron Siegel wrote:
> Hello 
> 
> I have installed an evaluation of RHEL 7.  I receive an error when
> trying to install a virtual machine using virt-manager. I receive the
> following errow when KVM is initiated:
> 
> Unable to complete install: 'internal error: process exited while
> connecting to monitor: qemu-kvm: -drive
> file=/var/lib/libvirt/images/test.img,if=none,id=drive-ide0-0-0,format=raw,cache=none: could not open disk image /var/lib/libvirt/images/test.img: Could not open file: Invalid argument
> '
> 
> Traceback (most recent call last):
>   File "/usr/share/virt-manager/virtManager/asyncjob.py", line 100, in
> cb_wrapper
>     callback(asyncjob, *args, **kwargs)
>   File "/usr/share/virt-manager/virtManager/create.py", line 1925, in
> do_install
>     guest.start_install(False, meter=meter)
>   File "/usr/share/virt-manager/virtinst/Guest.py", line 1143, in
> start_install
>     noboot)
>   File "/usr/share/virt-manager/virtinst/Guest.py", line 1211, in
> _create_guest
>     dom = self.conn.createLinux(start_xml or final_xml, 0)
>   File "/usr/lib64/python2.7/site-packages/libvirt.py", line 2892, in
> createLinux
>     if ret is None:raise libvirtError('virDomainCreateLinux() failed',
> conn=self)
> libvirtError: internal error: process exited while connecting to
> monitor: qemu-kvm: -drive
> file=/var/lib/libvirt/images/test.img,if=none,id=drive-ide0-0-0,format=raw,cache=none: could not open disk image /var/lib/libvirt/images/test.img: Could not open file: Invalid argument
> 
> I have edited the user and group in the /etc/libvirt/qemu.conf file to
> different and chown the directory /var/lib/libvirt/qemu. I have also
> allowed rw to everyone to the entire /var/lib/libvirt directory. Nothing
> is working.
>