similar to: Passing non-standard Options through Libvirt to QEMU

There are a couple of problems with passthrough qemu: 1. virsh version/capabilities command executes "qemu -help" but this gives an error in my case because my customized qemu has to receive mandatory non-standard parameters "qemu -c -n -- -help". 2. Similarly when passing arguments as passthrough in a VMs XML. How can I make sure that these non-standard arguments are passed

Currently in the VM XML, I am passing the following command line argument as a passthrough argument: -netdev type=tap,id=net1,script=no,downscript=no,ifname=port3,vhost=on -device virtio-net-pci,netdev=net1,mac=00:00:00:00:00:01,csum=off,gso=off,guest_tso4=off,guest_tso6=off,guest_ecn=off Is there another way to represent this in the XML file? maybe that may solve the problem. On 24 July 2014

​The qemu that I am using isn't modified at all. It's the VHOST drivers that are mounted elsewhere i.e., not on default /dev/vhost-net. Here is the command that I use to launch my qemu VM: qemu-system-x86_64 -cpu host -boot order=c -hda /root/Disks/ubuntu1.qcow2 -m 1024M -smp 2 --enable-kvm -name 'client 1' -nographic -vnc :2 -net none -no-reboot -mem-path /dev/hugepages

On Thu, Jul 24, 2014 at 03:48:06PM +0500, Asadullah Hussain wrote: > Let me clarify my question, I am using unmodified stock qemu (1.4.0) and > only the location of vhost file descriptor is different from default (I > don't remove the default /dev/vhost-net directory) > > The VHOST file descriptor is present in "/dev/vhost-0" directory instead of > the default

On Wed, Mar 19, 2014 at 05:17:52PM +0500, Asadullah Hussain wrote: > Guys thanks a lot for taking the time out to reply, Although adding the > $PATH & symbolic link methods both solved the "No hypervisor found" error > on virt-manager but when I try to create a VM using the wizard it says: > > "No hypervisor options were found for this connection" > >

Thanks Wangkai but libvirt infact pre-configures network tap devices and pre-opens /dev/vhost-net file and passes these to qemu as open, ready to use file descriptors. My issue is that my qemu requires that /dev/vhost-net directory is removed and it's kernel module be unloaded. Then it creates a vhost -net device using its own configuration. On 24 July 2014 07:35, Wangkai (Kevin,C)

On Tue, Mar 04, 2014 at 02:09:19PM -0700, Eric Blake wrote: > On 03/04/2014 05:12 AM, Asadullah Hussain wrote: > > Hello I have manually compiled a customized qemu (1.4.0) which runs fine on > > its own (create VM etc) but I want to access this qemu through libvirt > > (virt-manager, virsh etc). > > > > But the libvirt driver only looks into "/usr/bin"

Hello I have manually compiled a customized qemu (1.4.0) which runs fine on its own (create VM etc) but I want to access this qemu through libvirt (virt-manager, virsh etc). But the libvirt driver only looks into "/usr/bin" for qemu binaries, how can I tell libvirt to connect to my qemu which is placed at "/home/user/qemu" directory. -- Asadullah Hussain

On Mon, Mar 31, 2014 at 04:33:40PM +0500, Asadullah Hussain wrote: > Hello, I have a custom QEMU which requires some non-standard command line > arguments to launch a VM. e.g., "--proc-type=secondary" option is always > required to launch a QEMU VM. > > To launch the VM through libvirt (virsh) "How do I specify these > non-standard options in XML? See this page

I am using a custom qemu to launch a vhost enabled VM. The qemu doesn't use the default "/dev/vhost-net" directory as character device. Due to this I am getting the error: qemu-system-x86_64: -netdev type=tap,id=net1,script=no,downscript=no,ifname=port3,vhost=on: vhost-net requested but could not be initialized ​Is there a way to tell libvirt to ​avoid using the default

Hello, I am trying run a simple VM (qemu1.4.2) on RHEL 6.5 through libvirt (0.10). virsh create throws the error: *​error: Failed to create domain from vm1.xml* *error: internal error process exited while connecting to monitor:*​ The libvirt log for VM shows: *libvir: error : cannot execute binary /usr/bin/qemu-system-x86_64: Permission denied* ​I am running VM as root and all disk

The qemu binary is accessible as I can create VM through command line. That is why I thought it may be a libvirt issue. I have also contacted Red Hat support and will post my findings here if the issue is resolved. On 23 April 2014 17:16, Eric Blake <eblake@redhat.com> wrote: > On 04/23/2014 05:44 AM, Asadullah Hussain wrote: > > Hello, > > > > I am trying run a

Let me clarify my question, I am using unmodified stock qemu (1.4.0) and only the location of vhost file descriptor is different from default (I don't remove the default /dev/vhost-net directory) The VHOST file descriptor is present in "/dev/vhost-0" directory instead of the default "/dev/vhost-net". When I try to give vhostfd in the XML I get a different error:

On 05/18/2015 01:02 PM, Jim Fehlig wrote: > On 05/18/2015 11:35 AM, Emma Anderson wrote: >> hi, >> >> I use xl toolstack to manage vms on a Xen machine, and also pass some >> custom parameters when creating a vm, for example: >> >> xl create vm.cfg ' param="xyz" ' > > Documentation on create subcommand in the xl man page describes the

Hi Team, I am exploring "edu" device in QEMU to add my own custom device. I am able to add the device using the command line. Would it be possible to add the device using XML file through libvirt? -- Regards, Bharath

Guys thanks a lot for taking the time out to reply, Although adding the $PATH & symbolic link methods both solved the "No hypervisor found" error on virt-manager but when I try to create a VM using the wizard it says: "No hypervisor options were found for this connection" "This usually means that QEMU or KVM is not installed on your machine, or the KVM modules are

Still no success virsh capabilities doesn't return any "emulator" output. When I check the "libvirtd.log" there is an error: 2014-03-20 11:25:00.056+0000: 1014: error : virCommandWait:2188 : internal error Child process (LC_ALL=C PATH=/usr/local/sbin:/usr/ local/bin:/usr/bin:/usr/sbin:/sbin:/bin /usr/local/bin/qemu-system-x86_64 -help) status unexpected: exit status 1 I

For qemu, the default vhost drive file is “/dev/vhost-net”, when you configured vhost on. Give the command “modprobe vhost-net” to add host kernel support for vhost. This is cannot controlled by libvirt I think. Wangkai From: libvirt-users-bounces@redhat.com [mailto:libvirt-users-bounces@redhat.com] On Behalf Of Asadullah Hussain Sent: Thursday, July 24, 2014 12:43 AM To:

On 24 July 2014 15:52, Daniel P. Berrange <berrange@redhat.com> wrote: > On Thu, Jul 24, 2014 at 03:48:06PM +0500, Asadullah Hussain wrote: > > Let me clarify my question, I am using unmodified stock qemu (1.4.0) and > > only the location of vhost file descriptor is different from default (I > > don't remove the default /dev/vhost-net directory) > > > >

On 2018?06?05? 09:41, Samudrala, Sridhar wrote: > Ping on this patch now that the kernel patches are accepted into > davem's net-next tree. > https://patchwork.ozlabs.org/cover/920005/ > > > On 5/7/2018 4:09 PM, Sridhar Samudrala wrote: >> This feature bit can be used by hypervisor to indicate virtio_net >> device to >> act as a standby for another device