This two patch series formalizes a workflow we expect to work for the
purposes of image fleecing. There are some remaining questions on
serialization correctness that we intend to address at a later time,
possibly during the 3.0 soft freeze window.

V4:
 - Replace my 1/2 with Vladimir's, which was more exhaustive.
 - Formatting improvements to 2/2 (Vladimir)
 - Specify the image format on write (Vladimir)

V3:
 - Added explicit zero checking as per Eblake's suggestion
 - Remove stale python code

John Snow (1):
  iotests: add 222 to test basic fleecing

Vladimir Sementsov-Ogievskiy (1):
  blockdev: enable non-root nodes for backup source

 blockdev.c                 |   4 +-
 tests/qemu-iotests/222     | 155 +++++++++++++++++++++++++++++++++++++++++++++
 tests/qemu-iotests/222.out |  67 ++++++++++++++++++++
 tests/qemu-iotests/group   |   1 +
 4 files changed, 225 insertions(+), 2 deletions(-)
 create mode 100644 tests/qemu-iotests/222
 create mode 100644 tests/qemu-iotests/222.out

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2.14.4