Re: [libvirt-users] is memoryBacking support 'share' and 'mem-path' parameter

On Wed, Oct 08, 2014 at 10:03:47AM +0800, Linhaifeng wrote: > Hi, > > I want to use this qemu command '-object memory-backend-file,id=mem,size=2048M,mem-path=/mnt/huge,share=on' with libvirt but i can't find the 'mem-path' and 'share' in the documentation. > because the vhost-user backend based on 'share=on' parameter and libvirt support vhostuser i guess there maybe another way to support this parameter? > > this is my xml: > <cpu> > <numa> > <cell id='0' cpus='0' memory='1048576' memAccess='shared'/> > <cell id='1' cpus='1' memory='1048576' memAccess='shared'/> this memAccess='shared' is exactly what you need in order for the share='on' to be appended. I wonder why it's not there. What libvirt version are you using?

> </numa> > </cpu> > <memoryBacking> > <hugepages> > <page size="2" unit="M" nodeset="0,1"/> > </hugepages> > <!--nosharepages/--> > <!--locked/--> > </memoryBacking> > > > <interface type='vhostuser'> > <mac address='52:54:00:3b:83:1a'/> > <source type='unix' path='/path/port1' mode='client'/> > <model type='virtio'/> > </interface> > <interface type='vhostuser'> > <mac address='52:54:00:3b:83:1b'/> > <source type='unix' path='/path/port2' mode='client'/> > <model type='virtio'/> > </interface> > > > when i create the VM the qemu command is like this without 'share=on' parameter: > -object memory-backend-file,prealloc=yes,mem-path=/dev/hugepages/libvirt/qemu,size=1024M,id=ram-node0 -numa node,nodeid=0,cpus=0,memdev=ram-node0 > -object memory-backend-file,prealloc=yes,mem-path=/dev/hugepages/libvirt/qemu,size=1024M,id=ram-node1 -numa node,nodeid=1,cpus=1,memdev=ram-node1 > > _______________________________________________ > libvirt-users mailing list > libvirt-users(a)redhat.com > https://www.redhat.com/mailman/listinfo/libvirt-users