I have a PCI sound card that I would like to assign to a VM, but
when I try to do so the VM fails to start and displays this message:
Error starting domain: Unable to read from monitor: Connection reset by peer
Traceback (most recent call last):
File "/usr/share/virt-manager/virtManager/asyncjob.py", line 44, in
cb_wrapper
callback(asyncjob, *args, **kwargs)
File "/usr/share/virt-manager/virtManager/asyncjob.py", line 65, in
tmpcb
callback(*args, **kwargs)
File "/usr/share/virt-manager/virtManager/domain.py", line 1125, in
startup
self._backend.create()
File "/usr/lib64/python2.6/site-packages/libvirt.py", line 686, in
create
if ret == -1: raise libvirtError ('virDomainCreate() failed',
dom=self)
libvirtError: Unable to read from monitor: Connection reset by peer
The XML generated by virt-manager for the device is
<hostdev mode='subsystem' type='pci'
managed='yes'>
<source>
<address domain='0x0000' bus='0x07'
slot='0x04' function='0x0'/>
</source>
<address type='pci' domain='0x0000' bus='0x00'
slot='0x06'
function='0x0'/>
</hostdev>
The sound card is an Asus Xonar DGX PCIe 5.1, and identifies itself
as "07:04.0 Multimedia audio controller: C-Media Electronics Inc CMI8788
[Oxygen HD Audio]".
I see the same problem if I try to assign the motherboard's Intel
Xeon E3-1200 HD Audio Controller to the VM. Both of these devices
are supported by the host kernel (3.18.17-13.el6.x86_64).
I have no problem assigning a USB sound device, but those have very
limited capability.
--
Bob Nichols "NOSPAM" is really part of my email address.
Do NOT delete it.
On Thu, Sep 3, 2015 at 2:29 AM, Robert Nichols <rnicholsNOSPAM at comcast.net> wrote:> I have a PCI sound card that I would like to assign to a VM, but > when I try to do so the VM fails to start and displays this message: > > Error starting domain: Unable to read from monitor: Connection reset by peer > > Traceback (most recent call last): > File "/usr/share/virt-manager/virtManager/asyncjob.py", line 44, in > cb_wrapper > callback(asyncjob, *args, **kwargs) > File "/usr/share/virt-manager/virtManager/asyncjob.py", line 65, in tmpcb > callback(*args, **kwargs) > File "/usr/share/virt-manager/virtManager/domain.py", line 1125, in > startup > self._backend.create() > File "/usr/lib64/python2.6/site-packages/libvirt.py", line 686, in create > if ret == -1: raise libvirtError ('virDomainCreate() failed', dom=self) > libvirtError: Unable to read from monitor: Connection reset by peer > > The XML generated by virt-manager for the device is > > <hostdev mode='subsystem' type='pci' managed='yes'> > <source> > <address domain='0x0000' bus='0x07' slot='0x04' function='0x0'/> > </source> > <address type='pci' domain='0x0000' bus='0x00' slot='0x06' > function='0x0'/> > </hostdev> > > The sound card is an Asus Xonar DGX PCIe 5.1, and identifies itself > as "07:04.0 Multimedia audio controller: C-Media Electronics Inc CMI8788 > [Oxygen HD Audio]". > > I see the same problem if I try to assign the motherboard's Intel > Xeon E3-1200 HD Audio Controller to the VM. Both of these devices > are supported by the host kernel (3.18.17-13.el6.x86_64). > > I have no problem assigning a USB sound device, but those have very > limited capability.Which hypervisor / CentOS version are you using? -George
On 09/03/2015 03:14 AM, George Dunlap wrote:> On Thu, Sep 3, 2015 at 2:29 AM, Robert Nichols > <rnicholsNOSPAM at comcast.net> wrote: >> I have a PCI sound card that I would like to assign to a VM, but >> when I try to do so the VM fails to start and displays this message: >> >> Error starting domain: Unable to read from monitor: Connection reset by peer[SNIP]>> The sound card is an Asus Xonar DGX PCIe 5.1, and identifies itself >> as "07:04.0 Multimedia audio controller: C-Media Electronics Inc CMI8788 >> [Oxygen HD Audio]". >> >> I see the same problem if I try to assign the motherboard's Intel >> Xeon E3-1200 HD Audio Controller to the VM. Both of these devices >> are supported by the host kernel (3.18.17-13.el6.x86_64). >> >> I have no problem assigning a USB sound device, but those have very >> limited capability. > > Which hypervisor / CentOS version are you using?libvirt-0.10.2-54.el6.x86_64 in CentOS 6.7, using kernel-3.18.17-13.el6.x86_64 from the Xen4CentOS 6 repo. (I need that kernel for the motherboard's sound controller. The behavior when trying to assign a PCI device to the VM is the same with the standard 2.6.32 kernel in CentOS 6.7.) -- Bob Nichols "NOSPAM" is really part of my email address. Do NOT delete it.