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[PATCH v4 0/7] Tighten qemu-img rules on missing backing format



v3 was here:
https://lists.gnu.org/archive/html/qemu-devel/2020-03/msg01730.html
In v4:
- old patch 1 was reworked into new patch 1-3, with stricter rules
on which backing formats are accepted [Kevin]
- patch 4 is new: amend is handled differently from rebase [Kashyap]
- rebase to master

Eric Blake (7):
  sheepdog: Add trivial backing_fmt support
  vmdk: Add trivial backing_fmt support
  qcow: Tolerate backing_fmt=, but warn on backing_fmt=raw
  qcow2: Deprecate use of qemu-img amend to change backing file
  iotests: Specify explicit backing format where sensible
  block: Add support to warn on backing file change without format
  qemu-img: Deprecate use of -b without -F

 docs/system/deprecated.rst    | 31 +++++++++++++++
 docs/tools/qemu-img.rst       |  4 ++
 include/block/block.h         |  4 +-
 block.c                       | 34 +++++++++++++++--
 block/qcow.c                  | 16 +++++++-
 block/qcow2.c                 |  7 +++-
 block/sheepdog.c              | 14 +++++++
 block/stream.c                |  2 +-
 block/vmdk.c                  | 14 +++++++
 blockdev.c                    |  3 +-
 qemu-img.c                    |  4 +-
 tests/qemu-iotests/017        |  2 +-
 tests/qemu-iotests/017.out    |  2 +-
 tests/qemu-iotests/018        |  2 +-
 tests/qemu-iotests/018.out    |  2 +-
 tests/qemu-iotests/019        |  5 ++-
 tests/qemu-iotests/019.out    |  2 +-
 tests/qemu-iotests/020        |  4 +-
 tests/qemu-iotests/020.out    |  4 +-
 tests/qemu-iotests/024        |  8 ++--
 tests/qemu-iotests/024.out    |  5 ++-
 tests/qemu-iotests/028        |  4 +-
 tests/qemu-iotests/028.out    |  2 +-
 tests/qemu-iotests/030        | 26 +++++++++----
 tests/qemu-iotests/034        |  2 +-
 tests/qemu-iotests/034.out    |  2 +-
 tests/qemu-iotests/037        |  2 +-
 tests/qemu-iotests/037.out    |  2 +-
 tests/qemu-iotests/038        |  2 +-
 tests/qemu-iotests/038.out    |  2 +-
 tests/qemu-iotests/039        |  3 +-
 tests/qemu-iotests/039.out    |  2 +-
 tests/qemu-iotests/040        | 47 ++++++++++++++++-------
 tests/qemu-iotests/041        | 37 ++++++++++++------
 tests/qemu-iotests/042        |  4 +-
 tests/qemu-iotests/043        | 18 ++++-----
 tests/qemu-iotests/043.out    | 16 +++++---
 tests/qemu-iotests/046        |  2 +-
 tests/qemu-iotests/046.out    |  2 +-
 tests/qemu-iotests/050        |  4 +-
 tests/qemu-iotests/050.out    |  2 +-
 tests/qemu-iotests/051        |  2 +-
 tests/qemu-iotests/051.out    |  2 +-
 tests/qemu-iotests/051.pc.out |  2 +-
 tests/qemu-iotests/056        |  3 +-
 tests/qemu-iotests/060        |  2 +-
 tests/qemu-iotests/060.out    |  2 +-
 tests/qemu-iotests/061        | 10 ++---
 tests/qemu-iotests/061.out    | 11 +++---
 tests/qemu-iotests/069        |  2 +-
 tests/qemu-iotests/069.out    |  2 +-
 tests/qemu-iotests/073        |  2 +-
 tests/qemu-iotests/073.out    |  2 +-
 tests/qemu-iotests/082        | 10 +++--
 tests/qemu-iotests/082.out    | 14 ++++---
 tests/qemu-iotests/085        |  4 +-
 tests/qemu-iotests/085.out    |  6 +--
 tests/qemu-iotests/089        |  2 +-
 tests/qemu-iotests/089.out    |  2 +-
 tests/qemu-iotests/095        |  4 +-
 tests/qemu-iotests/095.out    |  4 +-
 tests/qemu-iotests/097        |  4 +-
 tests/qemu-iotests/097.out    | 16 ++++----
 tests/qemu-iotests/098        |  2 +-
 tests/qemu-iotests/098.out    |  8 ++--
 tests/qemu-iotests/110        |  4 +-
 tests/qemu-iotests/110.out    |  4 +-
 tests/qemu-iotests/114        | 11 ++++++
 tests/qemu-iotests/114.out    |  8 ++++
 tests/qemu-iotests/122        | 27 +++++++------
 tests/qemu-iotests/122.out    |  8 ++--
 tests/qemu-iotests/126        |  4 +-
 tests/qemu-iotests/126.out    |  4 +-
 tests/qemu-iotests/127        |  4 +-
 tests/qemu-iotests/127.out    |  4 +-
 tests/qemu-iotests/129        |  3 +-
 tests/qemu-iotests/133        |  2 +-
 tests/qemu-iotests/133.out    |  2 +-
 tests/qemu-iotests/139        |  2 +-
 tests/qemu-iotests/141        |  4 +-
 tests/qemu-iotests/141.out    |  4 +-
 tests/qemu-iotests/142        |  2 +-
 tests/qemu-iotests/142.out    |  2 +-
 tests/qemu-iotests/153        | 14 +++----
 tests/qemu-iotests/153.out    | 35 +++++++++--------
 tests/qemu-iotests/154        | 42 ++++++++++----------
 tests/qemu-iotests/154.out    | 42 ++++++++++----------
 tests/qemu-iotests/155        | 12 ++++--
 tests/qemu-iotests/156        |  9 +++--
 tests/qemu-iotests/156.out    |  6 +--
 tests/qemu-iotests/158        |  2 +-
 tests/qemu-iotests/158.out    |  2 +-
 tests/qemu-iotests/161        |  8 ++--
 tests/qemu-iotests/161.out    |  8 ++--
 tests/qemu-iotests/176        |  4 +-
 tests/qemu-iotests/176.out    | 32 ++++++++--------
 tests/qemu-iotests/177        |  2 +-
 tests/qemu-iotests/177.out    |  2 +-
 tests/qemu-iotests/179        |  2 +-
 tests/qemu-iotests/179.out    |  2 +-
 tests/qemu-iotests/189        |  2 +-
 tests/qemu-iotests/189.out    |  2 +-
 tests/qemu-iotests/191        | 12 +++---
 tests/qemu-iotests/191.out    | 12 +++---
 tests/qemu-iotests/195        |  6 +--
 tests/qemu-iotests/195.out    |  6 +--
 tests/qemu-iotests/198        |  2 +-
 tests/qemu-iotests/198.out    |  3 +-
 tests/qemu-iotests/204        |  2 +-
 tests/qemu-iotests/204.out    |  2 +-
 tests/qemu-iotests/216        |  2 +-
 tests/qemu-iotests/224        |  4 +-
 tests/qemu-iotests/225        |  2 +-
 tests/qemu-iotests/225.out    |  2 +-
 tests/qemu-iotests/228        |  5 ++-
 tests/qemu-iotests/245        |  3 +-
 tests/qemu-iotests/249        |  4 +-
 tests/qemu-iotests/249.out    |  4 +-
 tests/qemu-iotests/252        |  2 +-
 tests/qemu-iotests/257        |  3 +-
 tests/qemu-iotests/267        |  4 +-
 tests/qemu-iotests/267.out    |  6 +--
 tests/qemu-iotests/270        |  2 +-
 tests/qemu-iotests/270.out    |  2 +-
 tests/qemu-iotests/273        |  4 +-
 tests/qemu-iotests/273.out    |  4 +-
 tests/qemu-iotests/279        |  4 +-
 tests/qemu-iotests/279.out    |  4 +-
 tests/qemu-iotests/290        | 72 +++++++++++++++++++++++++++++++++++
 tests/qemu-iotests/290.out    | 45 ++++++++++++++++++++++
 tests/qemu-iotests/group      |  1 +
 131 files changed, 671 insertions(+), 348 deletions(-)
 create mode 100755 tests/qemu-iotests/290
 create mode 100644 tests/qemu-iotests/290.out

-- 
2.25.1


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