Re: [libvirt] How to use a Virtio-serial port

Hi, Can Anyone please tell me if there is any option in virt-install by which we can specify this vitio-serial port I mean I don't want to edit xml file and then define it as it is a post installation process. I want to enable the virtio-serial port when I install the guest using virt-install

Regards Pankaj Rawat -----Original Message----- From: Michal Privoznik [mailto:mprivozn@redhat.com] Sent: Tuesday, May 15, 2012 2:14 PM To: Pankaj Rawat Cc: libvir-list(a)redhat.com Subject: Re: [libvirt] How to use a Virtio-serial port On 15.05.2012 09:06, Pankaj Rawat wrote: > Hi all, > > > > I want to use virtio-serial > > For this I changes my guest xml > > <channel type='pty'> > > <target type='virtio' name='arbitrary.virtio.serial.port.name'/> > > </channel> > > > > This create a virtio port in guest as follow > > > > # ls -l /dev/virtio-ports/ > > lrwxrwxrwx. 1 root root 11 May 15 02:59 > arbitrary.virtio.serial.port.name -> ../vport0p1 > > > > Now I want to use this port > > What type of application use this port for communication and how can I > use it ? > When you start your domain and then dump its XML it will look like this: <channel type='pty'> <source path='/dev/pts/12'/> <target type='virtio' name='arbitrary.virtio.serial.port.name'/> <alias name='channel0'/> <address type='virtio-serial' controller='0' bus='0' port='2'/> </channel> So one end of the channel is inside the domain under /dev/virtio-ports/arbitrary.virtio.serial.port.name and the other one is under /dev/pts/12 in the host. Therefore running: (guest) cat /dev/virtio-ports/arbitrary.virtio.serial.port.name (host) echo "Hello world" > /dev/pts/12 will do all the magic. You can use any tool that is able to work with unix domain sockets. I personally use socat [1]. 1: http://www.dest-unreach.org/socat/ > > > Regards > > Pankaj Rawat > > > > > DISCLAIMER: > > ----------------------------------------------------------------------------------------------------------------------- > > The contents of this e-mail and any attachment(s) are confidential and > intended > > for the named recipient(s) only. > > It shall not attach any liability on the originator or NECHCL or its > > affiliates. Any views or opinions presented in > > this email are solely those of the author and may not necessarily reflect the > > opinions of NECHCL or its affiliates. > > Any form of reproduction, dissemination, copying, disclosure, modification, > > distribution and / or publication of > > this message without the prior written consent of the author of this e-mail is > > strictly prohibited. If you have > > received this email in error please delete it and notify the sender > > immediately. . > > ----------------------------------------------------------------------------------------------------------------------- > > > > -- > libvir-list mailing list > libvir-list(a)redhat.com > https://www.redhat.com/mailman/listinfo/libvir-list DISCLAIMER: ----------------------------------------------------------------------------------------------------------------------- The contents of this e-mail and any attachment(s) are confidential and intended for the named recipient(s) only. It shall not attach any liability on the originator or NECHCL or its affiliates. Any views or opinions presented in this email are solely those of the author and may not necessarily reflect the opinions of NECHCL or its affiliates. Any form of reproduction, dissemination, copying, disclosure, modification, distribution and / or publication of this message without the prior written consent of the author of this e-mail is strictly prohibited. If you have received this email in error please delete it and notify the sender immediately. . -----------------------------------------------------------------------------------------------------------------------