[Qemu-block] [PATCH 0/2] block: Fix qemu-img creating overlay when guest running

[Fam Zheng]

Shared write lock is not strictly necessary for creating the overlay image, if
all what we want is to probe the size.

Fam Zheng (2):
  block: Open backing image in force share mode for size probe
  iotests: Test creating overlay when guest running

 block.c                    | 3 ++-
 tests/qemu-iotests/153     | 4 ++++
 tests/qemu-iotests/153.out | 3 +++
 3 files changed, 9 insertions(+), 1 deletion(-)

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2.14.3