Hi,

I’m facing following issue ( or misunderstanding from my side)

I try to attach a device to a running guest ; I want to do it persistently and without having to restart the GUEST .

By using options “–live – persistent” , I got following error :

[root@ldc01omv01 data]# virsh attach-device VM_RHEL7-1 "../data/channel_omnivision_to_be_used.xml" --live --persistent

Please enter your authentication name: root@ldc01omv01

Please enter your password:

error: Failed to attach device from ../data/channel_omnivision_to_be_used.xml

error: Requested operation is not valid: cannot modify device on transient domain

[root@ldc01omv01 data]# virsh -r list --all

Id Name State

----------------------------------------------------

8 VM_RHEL7-2 running

11 W2008R2-2 running

12 VM_RHEL7-1 running

By using options “–live ” , I got following error :

[root@ldc01omv01 data]# virsh attach-device VM_RHEL7-1 "../data/channel_omnivision_to_be_used.xml" --live

Please enter your authentication name: root@ldc01omv01

Please enter your password:

error: Failed to attach device from ../data/channel_omnivision_to_be_used.xml

error: Unable to read from monitor: Connection reset by peer

[root@ldc01omv01 data]# virsh -r list --all

Id Name State

----------------------------------------------------

8 VM_RHEL7-2 running

11 W2008R2-2 running

[root@ldc01omv01 data]#

And then the Guest is powered off !!

If I try to attach device when the Guest is off , then :

[root@ldc01omv01 data]# virsh attach-device VM_RHEL7-1 "../data/channel_omnivision_to_be_used_1.xml" --config --persistent

Please enter your authentication name: root@ldc01omv01

Please enter your password:

error: failed to get domain 'VM_RHEL7-1'

error: Domain not found: no domain with matching name 'VM_RHEL7-1'

FYI , xml file contents is :

<channel type='unix'>

<source mode='bind' path='//var/lib/libvirt/qemu/VM_RHEL7-1_omnivision_1.agent'/>

<target type='virtio' name='omnivision_1.agent'/>

</channel>

I’m using libvirt-1.2.17-13.el7.x86_64

Any help is welcome.

Thanks.

Regards,

J.P. Ribeauville

P: +33.(0).1.47.17.20.49

Puteaux 3 Etage 5 Bureau 4

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