Re: [Xen-devel] [PATCH v8 00/15] Migration v2 (libxc)

[Fabio Fantoni <fabio.fantoni@xxxxxxx>]

Il 02/04/2015 20:32, Andrew Cooper ha scritto:
> Presented here is v8 of the Migration v2 series (libxc subset), which is able
> to function when transparently inserted under an unmodified xl/libxl.
>
> There are numerous tweaks in v8 (fix build with MiniOS, tweak some code to
> appease Coverity, style fixes, clarification of some error messages) but no
> major changes from the previous version.  It is my belief that the libxc
> changes are functionally complete.
>
> This series can be found on a 'saverestore2-v8' at
>    http://xenbits.xen.org/git-http/people/andrewcoop/xen.git
>
> To experiment, simply set XG_MIGRATION_V2 in xl's environment.  For migration,
> the easiest way is to tweak libxl-save-helper to be a shell script
>
>    root@vitruvias:/home# cat /usr/lib/xen/bin/libxl-save-helper
>    #!/bin/bash
>    export XG_MIGRATION_V2=x
>    exec /usr/lib/xen/bin/libxl-save-helper.bin "$@"
>
> which will ensure that XG_MIGRATION_V2 gets set in the environment for both
> the source and destination of migration.
>
>    Patches 1 and 2 are prerequisites
>    Patches 3 to 13 are the meat of the series
>    Patch 14 is the design document
>    Patch 15 is the compat layer for unmodified libxl
>
> Please experiment!
Tested now, I did fast tests on hvm domU W7 64 bit and new winpv drivers 
without find regression.
I'll test it futher next week.

> ~Andrew
>
> Andrew Cooper (15):
>    tools/libxc: Implement writev_exact() in the same style as write_exact()
>    libxc/progress: Extend the progress interface
>    tools/libxc: Migration v2 framework
>    tools/libxc: C implementation of stream format
>    tools/libxc: noarch common code
>    tools/libxc: x86 common code
>    tools/libxc: x86 PV common code
>    tools/libxc: x86 PV save code
>    tools/libxc: x86 PV restore code
>    tools/libxc: x86 HVM save code
>    tools/libxc: x86 HVM restore code
>    tools/libxc: noarch save code
>    tools/libxc: noarch restore code
>    docs: libxc migration stream specification
>    tools/libxc: Migration v2 compatibility for unmodified libxl
>
>   docs/Makefile                            |   11 +-
>   docs/specs/libxc-migration-stream.pandoc |  672 +++++++++++++++++
>   tools/libxc/Makefile                     |    9 +
>   tools/libxc/include/xenguest.h           |   13 +
>   tools/libxc/xc_domain_restore.c          |   11 +-
>   tools/libxc/xc_domain_save.c             |    9 +-
>   tools/libxc/xc_private.c                 |  107 ++-
>   tools/libxc/xc_private.h                 |   18 +-
>   tools/libxc/xc_sr_common.c               |  113 +++
>   tools/libxc/xc_sr_common.h               |  342 +++++++++
>   tools/libxc/xc_sr_common_x86.c           |   54 ++
>   tools/libxc/xc_sr_common_x86.h           |   26 +
>   tools/libxc/xc_sr_common_x86_pv.c        |  210 ++++++
>   tools/libxc/xc_sr_common_x86_pv.h        |  102 +++
>   tools/libxc/xc_sr_restore.c              |  646 +++++++++++++++++
>   tools/libxc/xc_sr_restore_x86_hvm.c      |  327 +++++++++
>   tools/libxc/xc_sr_restore_x86_pv.c       | 1153 ++++++++++++++++++++++++++++++
>   tools/libxc/xc_sr_save.c                 |  788 ++++++++++++++++++++
>   tools/libxc/xc_sr_save_x86_hvm.c         |  256 +++++++
>   tools/libxc/xc_sr_save_x86_pv.c          |  860 ++++++++++++++++++++++
>   tools/libxc/xc_sr_stream_format.h        |  148 ++++
>   tools/libxc/xtl_core.c                   |    9 +-
>   22 files changed, 5867 insertions(+), 17 deletions(-)
>   create mode 100644 docs/specs/libxc-migration-stream.pandoc
>   create mode 100644 tools/libxc/xc_sr_common.c
>   create mode 100644 tools/libxc/xc_sr_common.h
>   create mode 100644 tools/libxc/xc_sr_common_x86.c
>   create mode 100644 tools/libxc/xc_sr_common_x86.h
>   create mode 100644 tools/libxc/xc_sr_common_x86_pv.c
>   create mode 100644 tools/libxc/xc_sr_common_x86_pv.h
>   create mode 100644 tools/libxc/xc_sr_restore.c
>   create mode 100644 tools/libxc/xc_sr_restore_x86_hvm.c
>   create mode 100644 tools/libxc/xc_sr_restore_x86_pv.c
>   create mode 100644 tools/libxc/xc_sr_save.c
>   create mode 100644 tools/libxc/xc_sr_save_x86_hvm.c
>   create mode 100644 tools/libxc/xc_sr_save_x86_pv.c
>   create mode 100644 tools/libxc/xc_sr_stream_format.h

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