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[libvirt] [PATCHv5 0/4] Add support for memory backing with file source



Hi,
we would like to introduce 3 new elements source,access and allocation in memoryBacking element.
For now it was made for numa topology.

<memoryBacking>
     <source type="file|anonymous"/>
     <access mode="shared|private"/>
     <allocation mode="immediate|ondemand"/> 
</memoryBacking>

If allocation is immediate then -mem-prealloc should be added to the qemu commanline.
If source is file then
-object memory-backend-file,id=mem,size=1024M,mem-path=*lib dir path* -numa node,memdev=mem Will be added to the qemu commandline

If access is shared then the "share=on" parameter will be added to the memory-backend-file e.g.
-object memory-backend-file,id=mem,size=1024M,mem-path=/var/lib/libvirt/qemu,share=on

The access mode can be overriden by specifying token memAccess in numa cell.
The mem-path can be defined by new config parameter memory_backing_dir.

PS: the sometime failing test qemuhotplug was failing also before this patch :)

Jaroslav Safka (4):
  qemu,conf: Rename virNumaMemAccess to virDomainMemoryAccess
  qemu_conf: Add param memory_backing_dir
  conf: Add new xml elements for file memorybacking support
  qemu: Add args generation for file memory backing

 docs/formatdomain.html.in                          |   9 ++
 docs/schemas/domaincommon.rng                      |  30 +++++
 src/conf/domain_conf.c                             | 133 ++++++++++++++++-----
 src/conf/domain_conf.h                             |  22 ++++
 src/conf/numa_conf.c                               |  15 +--
 src/conf/numa_conf.h                               |  14 +--
 src/qemu/libvirtd_qemu.aug                         |   3 +
 src/qemu/qemu.conf                                 |   4 +
 src/qemu/qemu_command.c                            |  55 ++++++---
 src/qemu/qemu_conf.c                               |   9 ++
 src/qemu/qemu_conf.h                               |   2 +
 src/qemu/qemu_process.c                            |   2 +-
 src/qemu/test_libvirtd_qemu.aug.in                 |   1 +
 .../qemuxml2argv-fd-memory-no-numa-topology.args   |  21 ++++
 .../qemuxml2argv-fd-memory-no-numa-topology.xml    |  27 +++++
 .../qemuxml2argv-fd-memory-numa-topology.args      |  24 ++++
 .../qemuxml2argv-fd-memory-numa-topology.xml       |  30 +++++
 .../qemuxml2argv-fd-memory-numa-topology2.args     |  27 +++++
 .../qemuxml2argv-fd-memory-numa-topology2.xml      |  31 +++++
 .../qemuxml2argv-fd-memory-numa-topology3.args     |  30 +++++
 .../qemuxml2argv-fd-memory-numa-topology3.xml      |  32 +++++
 .../qemuxml2argv-memorybacking-set.xml             |  24 ++++
 .../qemuxml2argv-memorybacking-unset.xml           |  24 ++++
 tests/qemuxml2argvtest.c                           |  13 ++
 .../qemuxml2xmlout-memorybacking-set.xml           |  32 +++++
 .../qemuxml2xmlout-memorybacking-unset.xml         |  32 +++++
 tests/qemuxml2xmltest.c                            |   3 +
 27 files changed, 584 insertions(+), 65 deletions(-)
 create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-fd-memory-no-numa-topology.args
 create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-fd-memory-no-numa-topology.xml
 create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-fd-memory-numa-topology.args
 create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-fd-memory-numa-topology.xml
 create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-fd-memory-numa-topology2.args
 create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-fd-memory-numa-topology2.xml
 create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-fd-memory-numa-topology3.args
 create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-fd-memory-numa-topology3.xml
 create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-memorybacking-set.xml
 create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-memorybacking-unset.xml
 create mode 100644 tests/qemuxml2xmloutdata/qemuxml2xmlout-memorybacking-set.xml
 create mode 100644 tests/qemuxml2xmloutdata/qemuxml2xmlout-memorybacking-unset.xml

-- 
2.7.4

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