[libvirt] [RFC 0/3] update NVDIMM support

[Luyao Zhong]

Hi Han,

I'm not sure which release my patches will merge into. How about adding 
the patch to update the release news after my last version of these 
patches.  Waiting for more reviews and comments.

Regards,
Luyao Zhong

On 2018/10/18 上午9:10, Han Han wrote:
>
>
> On Wed, Oct 17, 2018 at 10:25 AM Luyao Zhong <luyao.zhong at intel.com 
> <mailto:luyao.zhong at intel.com>> wrote:
>
>     Hi libvirt experts,
>
>     This is the RFC for updating NVDIMM support in libvirt.
>
>     QEMU has supported four more properties which libvirt has not
>     introduced
>     yet, including 'align', 'pmem', 'nvdimm-persistences' and 'unarmed'.
>
>     The 'align' property allows users to specify the proper alignment. The
>     previous alignment can only be 4K because QEMU use pagesize as
>     alignment.
>     But some backends may require alignments different from the pagesize.
>
>     The 'pmem' property allows users to specify whether the backend
>     storage of
>     memory-backend-file is a real persistent memory. Then QEMU will
>     know if
>     it needs to guarrantee the write persistence to the vNVDIMM backend.
>
>     The 'nvdimm-persistence' property allows users to set
>     platform-supported
>     features about NVDIMM data persistence of a guest.
>
>     The 'unarmed' property allows users to mark vNVDIMM read-only.
>     Only the
>     device DAX on the real NVDIMM can guarantee the guest write
>     persistence,
>     so it's suggested to set 'unarmed' option to 'on' and then vNVDIMM
>     device
>     will be marked as read-only.
>
>     Libvirt introduces 'alignsize', 'pmem', 'persistence' and
>     'unarmed' config
>     elements into xml corresponding to 'align', 'pmem',
>     'nvdimm-persistence'
>     and 'unarmed' properties in QEMU, and update xml parsing,
>     formating and
>     qemu command-line generating process for NVDIMM.
>
>     Thanks,
>     Zhong, Luyao
>
>     Luyao Zhong (3):
>       xml: introduce more config elements for NVDIMM memory
>       xml: update xml parsing and formating about NVDIMM memory
>       qemu: update qemu command-line generating for NVDIMM memory
>
>      docs/formatdomain.html.in <http://formatdomain.html.in>          
>                   |  98 +++++++++++++++---
>      docs/schemas/domaincommon.rng                      |  31 +++++-
>
> Please add a patch to update the release news in news.xml.
>
>      src/conf/domain_conf.c                             | 115
>     +++++++++++++++++++--
>      src/conf/domain_conf.h                             |  14 +++
>      src/libvirt_private.syms                           |   2 +
>      src/qemu/qemu_command.c                            |  25 +++++
>      .../memory-hotplug-nvdimm-align.args               |  31 ++++++
>      .../memory-hotplug-nvdimm-align.xml                |  58 +++++++++++
>      .../memory-hotplug-nvdimm-persistence.args         |  31 ++++++
>      .../memory-hotplug-nvdimm-persistence.xml          |  58 +++++++++++
>      .../memory-hotplug-nvdimm-pmem.args                |  31 ++++++
>      .../memory-hotplug-nvdimm-pmem.xml                 |  58 +++++++++++
>      .../memory-hotplug-nvdimm-unarmed.args             |  31 ++++++
>      .../memory-hotplug-nvdimm-unarmed.xml              |  58 +++++++++++
>      tests/qemuxml2argvtest.c                           |  12 +++
>      .../memory-hotplug-nvdimm-align.xml                |   1 +
>      .../memory-hotplug-nvdimm-persistence.xml          |   1 +
>      .../memory-hotplug-nvdimm-pmem.xml                 |   1 +
>      .../memory-hotplug-nvdimm-unarmed.xml              |   1 +
>      tests/qemuxml2xmltest.c                            |   4 +
>      20 files changed, 636 insertions(+), 25 deletions(-)
>      create mode 100644
>     tests/qemuxml2argvdata/memory-hotplug-nvdimm-align.args
>      create mode 100644
>     tests/qemuxml2argvdata/memory-hotplug-nvdimm-align.xml
>      create mode 100644
>     tests/qemuxml2argvdata/memory-hotplug-nvdimm-persistence.args
>      create mode 100644
>     tests/qemuxml2argvdata/memory-hotplug-nvdimm-persistence.xml
>      create mode 100644
>     tests/qemuxml2argvdata/memory-hotplug-nvdimm-pmem.args
>      create mode 100644
>     tests/qemuxml2argvdata/memory-hotplug-nvdimm-pmem.xml
>      create mode 100644
>     tests/qemuxml2argvdata/memory-hotplug-nvdimm-unarmed.args
>      create mode 100644
>     tests/qemuxml2argvdata/memory-hotplug-nvdimm-unarmed.xml
>      create mode 120000
>     tests/qemuxml2xmloutdata/memory-hotplug-nvdimm-align.xml
>      create mode 120000
>     tests/qemuxml2xmloutdata/memory-hotplug-nvdimm-persistence.xml
>      create mode 120000
>     tests/qemuxml2xmloutdata/memory-hotplug-nvdimm-pmem.xml
>      create mode 120000
>     tests/qemuxml2xmloutdata/memory-hotplug-nvdimm-unarmed.xml
>
>     -- 
>     2.7.4
>
>     --
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>
>
> -- 
> Best regards,
> -----------------------------------
> Han Han
> Quality Engineer
> Redhat.
>
> Email: hhan at redhat.com <mailto:hhan at redhat.com>
> Phone: +861065339333
>
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