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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----- 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-
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