Re: [Qemu-devel] [PATCH 00/13] Dirty bitmap changes for migration/persistence work

[John Snow <jsnow@redhat.com>]

On 01/04/2016 05:27 AM, Fam Zheng wrote:
> Two major features are added to block dirty bitmap (and underlying HBitmap) in
> this series: meta bitmap and serialization, together with all other supportive
> patches.
> 
> Both operations are common in dirty bitmap migration and persistence: they need
> to find whether and which part of the dirty bitmap in question has changed with
> meta dirty bitmap, and they need to write it to the target with serialization.
> 
> Fam Zheng (11):
>   backup: Use Bitmap to replace "s->bitmap"
>   typedefs: Add BdrvDirtyBitmap and HBitmapIter
>   block: Move block dirty bitmap code to separate files
>   block: Remove unused typedef of BlockDriverDirtyHandler
>   block: Hide HBitmap in block dirty bitmap interface
>   HBitmap: Introduce "meta" bitmap to track bit changes
>   tests: Add test code for meta bitmap
>   block: Support meta dirty bitmap
>   block: Add two dirty bitmap getters
>   block: Assert that bdrv_release_dirty_bitmap succeeded
>   tests: Add test code for hbitmap serialization
> 
> Vladimir Sementsov-Ogievskiy (2):
>   hbitmap: serialization
>   block: BdrvDirtyBitmap serialization interface
> 
>  block.c                      | 339 -----------------------------
>  block/Makefile.objs          |   2 +-
>  block/backup.c               |  25 ++-
>  block/dirty-bitmap.c         | 491 +++++++++++++++++++++++++++++++++++++++++++
>  block/mirror.c               |  14 +-
>  include/block/block.h        |  39 +---
>  include/block/dirty-bitmap.h |  70 ++++++
>  include/qemu/hbitmap.h       |  84 ++++++++
>  include/qemu/typedefs.h      |   3 +
>  tests/test-hbitmap.c         | 252 ++++++++++++++++++++++
>  util/hbitmap.c               | 197 +++++++++++++++--
>  11 files changed, 1106 insertions(+), 410 deletions(-)
>  create mode 100644 block/dirty-bitmap.c
>  create mode 100644 include/block/dirty-bitmap.h
> 

That's all I've got for now. Happy New Year!

What's your roadmap for these patches? This, then QBM?

--js