[Qemu-devel] [PATCH v3 0/5] block: allow partial info-block query

[John Snow]

Allow info-block to succeed even when it cannot reconstruct filenames,
but be explicit about this failure. Utilities that rely on the current
behavior are modified to report this explicit failure to users.

v3:
 - Fix qemu-img output such that "backing file IS the absolute backing path"
   and "absolute backing path was indeterminate" are distinguishable via
   a new error message present in block/qapi.c; see patch 3.
 - Output for test 110 modified once more to expect the above error.

v2:
 - Fix qemu-img from now choking when it gets a partial response.

________________________________________________________________________________

For convenience, this branch is available at:
https://github.com/jnsnow/qemu.git branch block-allow-partial-query
https://github.com/jnsnow/qemu/tree/block-allow-partial-query

This version is tagged block-allow-partial-query-v3:
https://github.com/jnsnow/qemu/releases/tag/block-allow-partial-query-v3

John Snow (5):
  block/qapi: do not redundantly print "actual path"
  block/qapi: always report full_backing_filename
  block/qapi: explicitly warn if !has_full_backing_filename
  qemu-img: abort when full_backing_filename not present
  block/qapi: allow best-effort query

 block/qapi.c               | 19 ++++++++++++-------
 qemu-img.c                 |  5 ++++-
 tests/qemu-iotests/043.out |  2 ++
 tests/qemu-iotests/110.out |  5 ++++-
 4 files changed, 22 insertions(+), 9 deletions(-)

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2.4.3