[libvirt] [PATCH RFC 0/7] libxl: domain statistics support

[Joao Martins]

Hey Jim,

This series bring support for various statistics about domains
regarding CPU, Memory, Network Interfaces and BlockStats. Not all of
the statistics are implemented: qdisk support is missing in this series
and some of the memory statistics aren't available.

With this series we further implement 7 more functions of libvirt APIs.
It is organized as follows:

 * Patch 1, 2: implements cpu/memory statistics.
 * Patch 3, 4: implements (netback) network statistics and VBD block
               statistics. QDisk will follow up in a separate series
	       regarding QEMU monitor integration.
 * Patch 5: implement fetching all domain statistics
 * Patch 6, 7: implements Job information.

Overall it looks big but 70% of the patch is due to #4 and #5 but doesn't
add necessarily more complexity to the driver I believe. Patch #6 and #7
are of special importance because GetJobInfo and GetJobStats are now used
in Openstack Kilo to monitor live-migration progress. This two patches
together with an earlier series [0] I sent before let us sucessfully
live-migrate with Openstack Kilo. Further with this series we get to
support nova diagnostics.

Tested this series on 4.4.3 and 4.5 setups plus Openstack Kilo.

Any comments or suggestions are welcome,

Thanks!
Joao

Joao Martins (7):
  libxl: implement virDomainGetCPUStats
  libxl: implement virDomainMemorystats
  libxl: implement virDomainInterfaceStats
  libxl: implement virDomainBlockStats
  libxl: implement virConnectGetAllDomainStats
  libxl: implement virDomainGetJobInfo
  libxl: implement virDomainGetJobStats

 configure.ac             |    2 +-
 src/libxl/libxl_domain.c |   29 ++
 src/libxl/libxl_domain.h |    6 +
 src/libxl/libxl_driver.c | 1010 ++++++++++++++++++++++++++++++++++++++++++++++
 4 files changed, 1046 insertions(+), 1 deletion(-)

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2.1.4