[libvirt-users] Virtio serial exposition

Jean-Pierre Ribeauville jpribeauville at axway.com
Wed Aug 26 12:17:20 UTC 2015


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 at axway.com<mailto:jpribeauville at axway.com>
http://www.axway.com<http://www.axway.com/>



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