On 27.03.2014 13:53, Mohsen Ghaemi wrote:
Hi all
I just encountered a problem in libvirt while was trying to attach and
detach a sr-iov vf to my VM
The version of my libvirt is 1.1.1-0ubuntu8.5
I tried to attach the device using following xml
<interface type='hostdev' managed='yes'>
<mac address='5c:01:fd:12:34:58'/>
<source>
<address type='pci' domain='0x0000' bus='0x04' slot='0x01'
function='0x1'/>
</source>
</interface>
When i attached device it worked properly and i managed to ping another
host.
virsh # attach-device t5 1.xml
Device attached successfully
But when i detached it still i had network traffic in my VM but libvirt
(virsh) said that
virsh # detach-device t5 1.xml
Device detached successfully
The next time i tried to attach it libvirt said that
virsh # attach-device t5 1.xml
error: Failed to attach device from 1.xml
error: Requested operation is not valid: PCI device 0000:04:01.1 is in
use by domain t5
and when i continue this action after the ‘domain’ i receive some
strange characters which might come from the memory space (memory
content) like some addresses, links or some characters
I tried it with different VMs and different guest OSs that the same happend.
The same action was done with another host running libvirt version
Installed: 1.0.2-0ubuntu11.13.04.5~cloud1
Candidate: 1.0.2-0ubuntu11.13.04.5~cloud1
This is probably a bug in libvirt. There's been a rework of hostdev
plugging and unplugging recently. Can you try the 1.2.3-rc1 and see if
the problem is gone?
Michal
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