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...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...

...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...

Hi, By trying to add this device : <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> Within config file by issuing virsh edit , I got following error when to saving the config file : Unable to validate doc against /usr/share/libvirt/schemas/domain.rng Ext...