[libvirt] [PATCH 0/3] Guest NUMA topology support - v1

[Bharata B Rao]

Hi,

This patch series adds support for specifying NUMA topology for guests.

<cpu>
        ...
        <topology sockets='2' cores='4' threads='2'/>
        <numa>
                <cell cpus='0-7' mems='512000'/>
                <cell cpus='8-15' mems='512000'/>
        </numa>
        ...
</cpu>

This change allows libvirt to generate -numa options for QEMU/KVM.

Changes since v0
----------------
- Patch re-organization as per danpb's comments.
- Use of virBufferAsPrintf instead of snprintf as per danpb's comments.
- Use "cell" instead of "node" as per danpb's suggestion.
- Add a helper to truncate virBuffer as per Eric's suggestion.
- Add documentation.
- Add testcases
- Add basic validity check for cpus specified in <numa> ... </numa>

Testing
--------
The patches pass all tests except domainschema test. I think this is not
a real failure, but the test is probably failing to pickup the
right domaincommon.rng file. Will investigate further.

TEST: domainschematest
      ........................................ 40 
      ........................................ 80 
      .........!.............................. 120
      ........................................ 160
      .................!...................... 200
      ........................................ 240
      ........................................ 280
      ........................................ 320
      ...                                      323 FAILED

daemon-conf fails, but it fails even without my patches too. I guess my
patches are really affecting it.

TEST: daemon-conf
      .....!!!!!!...!!!!!!!!!!!!!!!!!!!./daemon-conf: line 98: kill: (7811) - No such process
!       34  FAILED


v0
--
- https://www.redhat.com/archives/libvir-list/2011-October/msg00025.html

RFC
---
- http://permalink.gmane.org/gmane.comp.emulators.libvirt/44626

Regards,
Bharata.