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(-) -- 2.14.3
