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

[Safka, JaroslavX]

I updated a little the description

diff --git a/docs/news.xml b/docs/news.xml
index f408293..5f37592 100644
--- a/docs/news.xml
+++ b/docs/news.xml
@@ -23,6 +23,16 @@
           built-in replication and disaster recovery.
         </description>
       </change>
+      <change>
+        <summary>
+          qemu: Add support for memory backing with file source
+        </summary>
+        <description>
+          Add support in numa topology for file source inside memory backing (hugepages are not needed)
+          Three new elements <source>,<access> and <allocation> were added to <memoryBacking> element.
+          Also new configuration parameter "memory_backing_dir" was added.
+        </description>
+      </change>
     </section>
     <section title="Improvements">
       <change>

> -----Original Message-----
> From: Michal Privoznik [mailto:mprivozn at redhat.com]
> Sent: Thursday, February 09, 2017 9:58 AM
> To: Safka, JaroslavX <jaroslavx.safka at intel.com>; libvir-list at redhat.com
> Cc: Mooney, Sean K <sean.k.mooney at intel.com>; Ptacek, MichalX
> <michalx.ptacek at intel.com>
> Subject: Re: [libvirt] [PATCHv5 0/4] Add support for memory backing with file
> source
> 
> On 02/02/2017 02:27 PM, Jaroslav Safka wrote:
> > 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,s
> > hare=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
> >
> 
> Looking good. ACK to all of them. However, please send a patch (as a reply to
> this cover letter) that updates docs/news.xml. Only after that it is possible to
> push these.
> 
> Michal
--------------------------------------------------------------
Intel Research and Development Ireland Limited
Registered in Ireland
Registered Office: Collinstown Industrial Park, Leixlip, County Kildare
Registered Number: 308263


This e-mail and any attachments may contain confidential material for the sole
use of the intended recipient(s). Any review or distribution by others is
strictly prohibited. If you are not the intended recipient, please contact the
sender and delete all copies.