[Qemu-devel] [PATCH 0/8] Dirty bitmaps migration

[Vladimir Sementsov-Ogievskiy]

These patches provide dirty bitmap migration feature. Only named dirty
bitmaps are to be migrated. Migration is made as a part of block
migration in block-migration.c.

Dirty bitmap migration may be enabled by "dirty" parameter for qmp migrate
command. If "blk" and "inc" parameters are false when "dirty" is true
block migration is actually skipped: no allocatoions, no bdrv_read's,
no bdrv_write's, only bitmaps are migrated.

The patch set includes two my previous bug fixes, which are necessary
for it. The patch set is based on Incremental backup series by John
Snow.

Vladimir Sementsov-Ogievskiy (8):
  block-migration: fix pending() return value
  block: fix spoiling all dirty bitmaps by mirror and migration
  hbitmap: store / restore
  block: BdrvDirtyBitmap store/restore interface
  block-migration: tiny refactoring
  block-migration: remove not needed iothread lock
  migration: add dirty parameter
  block-migration: add named dirty bitmaps migration

 block-migration.c             | 232 +++++++++++++++++++++++++++++++++---------
 block.c                       |  76 +++++++++++++-
 block/mirror.c                |  11 +-
 hmp-commands.hx               |  10 +-
 hmp.c                         |   4 +-
 include/block/block.h         |  16 ++-
 include/migration/migration.h |   1 +
 include/qemu/hbitmap.h        |  49 +++++++++
 migration.c                   |   4 +-
 qapi-schema.json              |   2 +-
 qmp-commands.hx               |   5 +-
 savevm.c                      |   4 +-
 util/hbitmap.c                |  84 +++++++++++++++
 13 files changed, 434 insertions(+), 64 deletions(-)

-- 
1.9.1