On Fri, Jul 01, 2016 at 04:35:18PM +0200, Michal Privoznik wrote: [...]
And while I'll be working on this, I want to take a look at NVDIMM feature that qemu introduced recently [2]. The way I understand it, it is very similar to my problem from above. The only difference (for the consistence) would be that the memory model would be something else than 'dimm' ('nvdimm' perhaps?)
<memory model='nvdimm'> <source> <path>/tmp/nvdimm1</path> </source> <target> <size unit='GiB'>10</size> </target> </memory>
-machine pc,nvdimm -m 8G,maxmem=100G,slots=100 \ -object memory-backend-file,id=mem1,share,mem-path=/tmp/nvdimm1,size=10G \ -device nvdimm,memdev=mem1,id=nv1
This patch shows how libguestfs would like to construct the qemu command line to enable DAX support: https://www.redhat.com/archives/libguestfs/2016-May/msg00138.html Note we need to control share (set share=off specifically). Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones Read my programming and virtualization blog: http://rwmj.wordpress.com libguestfs lets you edit virtual machines. Supports shell scripting, bindings from many languages. http://libguestfs.org