Jean-Pierre Ribeauville
2015-Sep-21 08:16 UTC
[libvirt-users] failure when trying to add a channel device via virsh attach-device
Hi,
On a KVM host installed with following packages versions :
[root@rhel6-roadster test_channels_OK]# rpm -qa | grep libvirt
libvirt-devel-0.10.2-29.el6.x86_64
libvirt-0.10.2-29.el6.x86_64
libvirt-client-0.10.2-29.el6.x86_64
libvirt-java-0.4.9-1.el6.noarch
libvirt-java-devel-0.4.9-1.el6.noarch
libvirt-python-0.10.2-29.el6.x86_64
[root@rhel6-roadster test_channels_OK]# rpm -qa | grep qemu
qemu-kvm-0.12.1.2-2.415.el6.x86_64
gpxe-roms-qemu-0.9.7-6.10.el6.noarch
qemu-img-0.12.1.2-2.415.el6.x86_64
[root@rhel6-roadster test_channels_OK]# virsh --version
0.10.2
[root@rhel6-roadster test_channels_OK]#
When trying to add a channel device via virsh attach-device , I got following
errors :
<channel type='unix'>
<source mode='bind'
path='//var/lib/libvirt/qemu/omnivision_123456.agent'/>
<target type='virtio' name='omnivision_123456.agent'
state='disconnected'/>
<alias name='channel_OmniVision'/>
<address type='virtio-serial' controller='0'
bus='0' port='30'/>
</channel>
Guest is off :
[root@rhel6-roadster test_channels_OK]# virsh attach-device Linux_2
add_channel_device.xml
error: Failed to attach device from add_channel_device.xml
error: Requested operation is not valid: cannot do live update a device on
inactive domain
[root@rhel6-roadster test_channels_OK]#
Guest is running :
[root@rhel6-roadster test_channels_OK]# virsh attach-device Linux_2
add_channel_device.xml
error: Failed to update device from add_channel_device.xml
error: XML error: unknown device type
[root@rhel6-roadster test_channels_OK]
Did I miss something ?
Thanks for help.
J.P. Ribeauville
P: +33.(0).1.47.17.27.87
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jpribeauville@axway.com<mailto:jpribeauville@axway.com>
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Peter Krempa
2015-Sep-21 09:18 UTC
Re: [libvirt-users] failure when trying to add a channel device via virsh attach-device
On Mon, Sep 21, 2015 at 08:16:17 +0000, Jean-Pierre Ribeauville wrote:> Hi, > On a KVM host installed with following packages versions : > > [root@rhel6-roadster test_channels_OK]# rpm -qa | grep libvirt > libvirt-devel-0.10.2-29.el6.x86_64 > libvirt-0.10.2-29.el6.x86_64 > libvirt-client-0.10.2-29.el6.x86_64 > libvirt-java-0.4.9-1.el6.noarch > libvirt-java-devel-0.4.9-1.el6.noarch > libvirt-python-0.10.2-29.el6.x86_64 > [root@rhel6-roadster test_channels_OK]# rpm -qa | grep qemu > qemu-kvm-0.12.1.2-2.415.el6.x86_64 > gpxe-roms-qemu-0.9.7-6.10.el6.noarch > qemu-img-0.12.1.2-2.415.el6.x86_64 > [root@rhel6-roadster test_channels_OK]# virsh --version > 0.10.2 > [root@rhel6-roadster test_channels_OK]# > > > When trying to add a channel device via virsh attach-device , I got following errors : > > <channel type='unix'> > <source mode='bind' path='//var/lib/libvirt/qemu/omnivision_123456.agent'/> > <target type='virtio' name='omnivision_123456.agent' state='disconnected'/> > <alias name='channel_OmniVision'/> > <address type='virtio-serial' controller='0' bus='0' port='30'/> > </channel> > > > Guest is off : > > > [root@rhel6-roadster test_channels_OK]# virsh attach-device Linux_2 add_channel_device.xml > error: Failed to attach device from add_channel_device.xml > error: Requested operation is not valid: cannot do live update a device on inactive domainThis was a bug in older versions. In case when the VM is offline you'll need to explicitly use the '--config' flag so that only the configuration is updated.> [root@rhel6-roadster test_channels_OK]# > > > Guest is running : > > [root@rhel6-roadster test_channels_OK]# virsh attach-device Linux_2 add_channel_device.xml > error: Failed to update device from add_channel_device.xml > error: XML error: unknown device typeThe libvirt version you are using does not support character device hotplug, so you'll not be able to hotplug a channel at this point. You'll need to use at least libvirt-1.1.1 or a version that backported commit: commit 24b0821926ead364a625210940773d7da43f1577 Author: Michal Privoznik <mprivozn@redhat.com> Date: Wed Mar 13 11:08:55 2013 +0100 qemu: Implement chardev hotplug on live level Since previous patches has prepared everything for us, we may now implement live hotplug of a character device. and the preliminary fixes. Peter
Jean-Pierre Ribeauville
2015-Sep-21 10:31 UTC
Re: [libvirt-users] failure when trying to add a channel device via virsh attach-device
Hi, I was aware of the fact that I cannot do device hotplug with this version.. By using my "old" version , is it possible via virsh (without using virsh edit) to add a device when the guest is shutdown ? Thanks for help.. J.P. -----Message d'origine----- De : Peter Krempa [mailto:pkrempa@redhat.com] Envoyé : lundi 21 septembre 2015 11:19 À : Jean-Pierre Ribeauville Cc : libvirt-users@redhat.com Objet : Re: [libvirt-users] failure when trying to add a channel device via virsh attach-device On Mon, Sep 21, 2015 at 08:16:17 +0000, Jean-Pierre Ribeauville wrote:> Hi, > On a KVM host installed with following packages versions : > > [root@rhel6-roadster test_channels_OK]# rpm -qa | grep libvirt > libvirt-devel-0.10.2-29.el6.x86_64 > libvirt-0.10.2-29.el6.x86_64 > libvirt-client-0.10.2-29.el6.x86_64 > libvirt-java-0.4.9-1.el6.noarch > libvirt-java-devel-0.4.9-1.el6.noarch > libvirt-python-0.10.2-29.el6.x86_64 > [root@rhel6-roadster test_channels_OK]# rpm -qa | grep qemu > qemu-kvm-0.12.1.2-2.415.el6.x86_64 > gpxe-roms-qemu-0.9.7-6.10.el6.noarch > qemu-img-0.12.1.2-2.415.el6.x86_64 > [root@rhel6-roadster test_channels_OK]# virsh --version > 0.10.2 > [root@rhel6-roadster test_channels_OK]# > > > When trying to add a channel device via virsh attach-device , I got following errors : > > <channel type='unix'> > <source mode='bind' path='//var/lib/libvirt/qemu/omnivision_123456.agent'/> > <target type='virtio' name='omnivision_123456.agent' state='disconnected'/> > <alias name='channel_OmniVision'/> > <address type='virtio-serial' controller='0' bus='0' port='30'/> > </channel> > > > Guest is off : > > > [root@rhel6-roadster test_channels_OK]# virsh attach-device Linux_2 > add_channel_device.xml > error: Failed to attach device from add_channel_device.xml > error: Requested operation is not valid: cannot do live update a > device on inactive domainThis was a bug in older versions. In case when the VM is offline you'll need to explicitly use the '--config' flag so that only the configuration is updated.> [root@rhel6-roadster test_channels_OK]# > > > Guest is running : > > [root@rhel6-roadster test_channels_OK]# virsh attach-device Linux_2 > add_channel_device.xml > error: Failed to update device from add_channel_device.xml > error: XML error: unknown device typeThe libvirt version you are using does not support character device hotplug, so you'll not be able to hotplug a channel at this point. You'll need to use at least libvirt-1.1.1 or a version that backported commit: commit 24b0821926ead364a625210940773d7da43f1577 Author: Michal Privoznik <mprivozn@redhat.com> Date: Wed Mar 13 11:08:55 2013 +0100 qemu: Implement chardev hotplug on live level Since previous patches has prepared everything for us, we may now implement live hotplug of a character device. and the preliminary fixes. Peter