include/sysemu/block-backend.h | 2 + block/block-backend.c | 23 +++ block/block-copy.c | 279 +++++++++++++++++-------- block/crypto.c | 9 +- block/io.c | 3 +- block/parallels.c | 8 +- block/qcow.c | 8 +- block/qcow2-refcount.c | 2 +- block/qcow2-snapshot.c | 20 +- block/qcow2.c | 45 ++-- block/qed.c | 8 +- block/sheepdog.c | 10 +- block/vdi.c | 8 +- block/vhdx.c | 8 +- block/vmdk.c | 9 +- block/vpc.c | 8 +- block/vvfat.c | 10 +- blockdev.c | 8 +- blockjob.c | 7 +- tests/qemu-iotests/001 | 2 +- tests/qemu-iotests/030 | 4 +- tests/qemu-iotests/052 | 2 +- tests/qemu-iotests/055 | 3 +- tests/qemu-iotests/061 | 35 ++++ tests/qemu-iotests/061.out | 28 +++ tests/qemu-iotests/134 | 2 +- tests/qemu-iotests/149 | 3 +- tests/qemu-iotests/153 | 2 +- tests/qemu-iotests/153.out | 12 +- tests/qemu-iotests/155 | 2 +- tests/qemu-iotests/188 | 2 +- tests/qemu-iotests/194 | 4 +- tests/qemu-iotests/202 | 4 +- tests/qemu-iotests/203 | 4 +- tests/qemu-iotests/206 | 2 +- tests/qemu-iotests/207 | 6 +- tests/qemu-iotests/208 | 2 +- tests/qemu-iotests/209 | 2 +- tests/qemu-iotests/210 | 6 +- tests/qemu-iotests/211 | 6 +- tests/qemu-iotests/212 | 6 +- tests/qemu-iotests/213 | 6 +- tests/qemu-iotests/216 | 4 +- tests/qemu-iotests/218 | 2 +- tests/qemu-iotests/219 | 2 +- tests/qemu-iotests/222 | 7 +- tests/qemu-iotests/224 | 4 +- tests/qemu-iotests/228 | 6 +- tests/qemu-iotests/234 | 4 +- tests/qemu-iotests/235 | 4 +- tests/qemu-iotests/236 | 2 +- tests/qemu-iotests/237 | 2 +- tests/qemu-iotests/238 | 2 + tests/qemu-iotests/242 | 2 +- tests/qemu-iotests/245 | 1 + tests/qemu-iotests/245.out | 10 +- tests/qemu-iotests/246 | 2 +- tests/qemu-iotests/248 | 2 +- tests/qemu-iotests/254 | 2 +- tests/qemu-iotests/255 | 2 +- tests/qemu-iotests/256 | 2 +- tests/qemu-iotests/258 | 10 +- tests/qemu-iotests/260 | 4 +- tests/qemu-iotests/262 | 4 +- tests/qemu-iotests/264 | 4 +- tests/qemu-iotests/274 | 4 +- tests/qemu-iotests/277 | 2 + tests/qemu-iotests/280 | 8 +- tests/qemu-iotests/283 | 4 +- tests/qemu-iotests/iotests.py | 366 ++++++++++++++++++++------------- tests/qemu-iotests/pylintrc | 26 +++ 71 files changed, 728 insertions(+), 386 deletions(-) create mode 100644 tests/qemu-iotests/pylintrc