[Qemu-block] [PATCH v2 0/2] bitmaps: merge bitmaps from different nodes

[Vladimir Sementsov-Ogievskiy]

Hi all!

We need to copy bitmaps to new top node on external snapshot, to
not break incremental backup chain.

The only thing to do is to allow block-dirty-bitmap-merge to work
with different nodes, here it is.

v2: use 'alternate' type in qapi for specifying source bitmap
    instead of adding new field external-bitmaps [Eric]

Vladimir Sementsov-Ogievskiy (2):
  qapi: support external bitmaps in block-dirty-bitmap-merge
  iotests: test external snapshot with bitmap copying

 qapi/block-core.json       | 22 +++++++++++++---
 block/dirty-bitmap.c       |  9 ++++---
 blockdev.c                 | 50 +++++++++++++++++++++++-------------
 tests/qemu-iotests/254     | 52 ++++++++++++++++++++++++++++++++++++++
 tests/qemu-iotests/254.out | 52 ++++++++++++++++++++++++++++++++++++++
 tests/qemu-iotests/group   |  1 +
 6 files changed, 163 insertions(+), 23 deletions(-)
 create mode 100755 tests/qemu-iotests/254
 create mode 100644 tests/qemu-iotests/254.out

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2.18.0