[Qemu-devel] [PATCH RFC 0/3] block: Backdoor to skip image locking in qemu-io/qemu-img

[Fam Zheng]

Hi Kevin,

This tries to capture your idea to add a explicit command option in qemu-io and
qemu-img for user to specify "expect inconsistent data when reading image".
It's stored as a BDRV_O_ flag internally, I don't know if there is a cleaner
way or not.

It's depended on by image locking series because several test cases need to be
updated to use this flag.

Fam

Fam Zheng (3):
  block: Introduce BDRV_O_UNSAFE_READ
  qemu-img: Add --unsafe-read option to subcommands
  qemu-io: Add --unsafe-read option

 block/block-backend.c |   2 +-
 include/block/block.h |   1 +
 qemu-img.c            | 148 ++++++++++++++++++++++++++++++++++++++------------
 qemu-io.c             |  28 +++++++---
 4 files changed, 137 insertions(+), 42 deletions(-)

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2.9.3