Hi,
I try to exchange datas between host and Guest by adding these lines in a
guest .xml conf file :
<channel type='pty'>
<target type='virtio'
name='arbitrary.virtio.serial.port.name'/>
<address type='virtio-serial' controller='0'
bus='0' port='1'/>
</channel>
Then /dev/virtio-ports/arbitrary.virtio.serial.port.name is exposed in the
guest and a /dev/pts/x is seen as source path on the host.
I checked that on two Linux hosts :
1)
libvirt-daemon-driver-qemu-1.2.8-16.el7_1.3.x86_64
qemu-kvm-1.5.3-86.el7_1.5.x86_64
qemu-kvm-common-1.5.3-86.el7_1.5.x86_64
qemu-guest-agent-2.1.0-4.el7.x86_64
ipxe-roms-qemu-20130517-6.gitc4bce43.el7.noarch
qemu-img-1.5.3-86.el7_1.5.x86_64
Linux sparring 3.10.0-229.el7.x86_64 #1 SMP Thu Jan 29 18:37:38 EST 2015 x86_64
x86_64 x86_64 GNU/Linux
2)
qemu-img-0.12.1.2-2.415.el6.x86_64
qemu-kvm-0.12.1.2-2.415.el6.x86_64
gpxe-roms-qemu-0.9.7-6.10.el6.noarch
Linux orion 2.6.32-431.el6.x86_64 #1 SMP Sun Nov 10 22:19:54 EST 2013 x86_64
x86_64 x86_64 GNU/Linux
The device is only exposed on the guest of the first host .
Is it due to a too old version of qemu and/or Linux on the second host or some
packages missing on this second host ?
Thx.
Regards,
J.P. Ribeauville
P: +33.(0).1.47.17.27.87
Puteaux 3 Etage 5 Bureau 4
jpribeauville@axway.com<mailto:jpribeauville@axway.com>
http://www.axway.com<http://www.axway.com/>
P Pensez à l'environnement avant d'imprimer.
On Wed, Aug 26, 2015 at 12:17:20PM +0000, Jean-Pierre Ribeauville wrote:> Hi, > > I try to exchange datas between host and Guest by adding these lines in a guest .xml conf file : > > <channel type='pty'> > <target type='virtio' name='arbitrary.virtio.serial.port.name'/> > <address type='virtio-serial' controller='0' bus='0' port='1'/> > </channel> > > > Then /dev/virtio-ports/arbitrary.virtio.serial.port.name is exposed in the guest and a /dev/pts/x is seen as source path on the host. > > I checked that on two Linux hosts : > > 1) > > libvirt-daemon-driver-qemu-1.2.8-16.el7_1.3.x86_64 > qemu-kvm-1.5.3-86.el7_1.5.x86_64 > qemu-kvm-common-1.5.3-86.el7_1.5.x86_64 > qemu-guest-agent-2.1.0-4.el7.x86_64 > ipxe-roms-qemu-20130517-6.gitc4bce43.el7.noarch > qemu-img-1.5.3-86.el7_1.5.x86_64 > Linux sparring 3.10.0-229.el7.x86_64 #1 SMP Thu Jan 29 18:37:38 EST 2015 x86_64 x86_64 x86_64 GNU/Linux > > > 2) > > qemu-img-0.12.1.2-2.415.el6.x86_64 > qemu-kvm-0.12.1.2-2.415.el6.x86_64 > gpxe-roms-qemu-0.9.7-6.10.el6.noarch > > > Linux orion 2.6.32-431.el6.x86_64 #1 SMP Sun Nov 10 22:19:54 EST 2013 x86_64 x86_64 x86_64 GNU/Linux > > > > The device is only exposed on the guest of the first host . > > Is it due to a too old version of qemu and/or Linux on the second host > or some packages missing on this second host ?Libvirt should tell you if qemu / host is too old, so sounds like a guest issue instead. Perhaps the guest kernel-module has not been loaded for the second guest ? Regards, Daniel -- |: http://berrange.com -o- http://www.flickr.com/photos/dberrange/ :| |: http://libvirt.org -o- http://virt-manager.org :| |: http://autobuild.org -o- http://search.cpan.org/~danberr/ :| |: http://entangle-photo.org -o- http://live.gnome.org/gtk-vnc :|
Jean-Pierre Ribeauville
2015-Aug-27 14:12 UTC
Re: [libvirt-users] Virtio serial exposition
Hi,
In fact it works fine .
The issue is the following :
Having a look to the source path , via Virtual Machine Manager , I got nothing .
But if I dump the xml file , then I got the pts/x reference :
<channel type='pty'>
<source path='/dev/pts/2'/>
<target type='virtio'
name='omnivision.virtio.serial.port.name'/>
<alias name='channel0'/>
<address type='virtio-serial' controller='0'
bus='0' port='1'/>
</channel>
By using a newer stuff on my second host ( RHEL7 instead of RHEL5) , then ,
it’s correct also via Virtual Machine Manager.
Thx for help.
J.P.
-----Message d'origine-----
De : Daniel P. Berrange [mailto:berrange@redhat.com]
Envoyé : jeudi 27 août 2015 12:13
À : Jean-Pierre Ribeauville
Cc : libvirt-users@redhat.com<mailto:libvirt-users@redhat.com>
Objet : Re: [libvirt-users] Virtio serial exposition
On Wed, Aug 26, 2015 at 12:17:20PM +0000, Jean-Pierre Ribeauville wrote:
> Hi,
>
> I try to exchange datas between host and Guest by adding these lines in a
guest .xml conf file :
>
> <channel type='pty'>
> <target type='virtio'
name='arbitrary.virtio.serial.port.name'/>
> <address type='virtio-serial' controller='0'
bus='0' port='1'/>
> </channel>
>
>
> Then /dev/virtio-ports/arbitrary.virtio.serial.port.name is exposed in the
guest and a /dev/pts/x is seen as source path on the host.
>
> I checked that on two Linux hosts :
>
> 1)
>
> libvirt-daemon-driver-qemu-1.2.8-16.el7_1.3.x86_64
> qemu-kvm-1.5.3-86.el7_1.5.x86_64
> qemu-kvm-common-1.5.3-86.el7_1.5.x86_64
> qemu-guest-agent-2.1.0-4.el7.x86_64
> ipxe-roms-qemu-20130517-6.gitc4bce43.el7.noarch
> qemu-img-1.5.3-86.el7_1.5.x86_64
> Linux sparring 3.10.0-229.el7.x86_64 #1 SMP Thu Jan 29 18:37:38 EST
> 2015 x86_64 x86_64 x86_64 GNU/Linux
>
>
> 2)
>
> qemu-img-0.12.1.2-2.415.el6.x86_64
> qemu-kvm-0.12.1.2-2.415.el6.x86_64
> gpxe-roms-qemu-0.9.7-6.10.el6.noarch
>
>
> Linux orion 2.6.32-431.el6.x86_64 #1 SMP Sun Nov 10 22:19:54 EST 2013
> x86_64 x86_64 x86_64 GNU/Linux
>
>
>
> The device is only exposed on the guest of the first host .
>
> Is it due to a too old version of qemu and/or Linux on the second
> host or some packages missing on this second host ?
Libvirt should tell you if qemu / host is too old, so sounds like a guest issue
instead. Perhaps the guest kernel-module has not been loaded for the second
guest ?
Regards,
Daniel
--
|: http://berrange.com -o- http://www.flickr.com/photos/dberrange/ :|
|: http://libvirt.org -o- http://virt-manager.org :|
|: http://autobuild.org -o- http://search.cpan.org/~danberr/ :|
|: http://entangle-photo.org -o- http://live.gnome.org/gtk-vnc :|