Re: [libvirt] Designing NVDIMM & memory-backend-file
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
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