[PATCH v4 0/7] nbd reconnect on open

[Vladimir Sementsov-Ogievskiy]

Hi all!

The functionality is reviewed, python testing part is not.

I've dropped the patch "qapi: make blockdev-add a coroutine command":
it's optional, I don't want to slow down the whole series because of it.

v4:
01-03: wording,  add Eric's r-b
others: small changes, never had an r-b

Vladimir Sementsov-Ogievskiy (7):
  nbd: allow reconnect on open, with corresponding new options
  nbd/client-connection: nbd_co_establish_connection(): return real
    error
  nbd/client-connection: improve error message of cancelled attempt
  iotests.py: add qemu_tool_popen()
  For qemu_io* functions support --image-opts argument, which conflicts
    with -f argument from qemu_io_args.
  Add qemu-io Popen constructor wrapper. To be used in the following new
    test commit.
  iotests: add nbd-reconnect-on-open test

 qapi/block-core.json                          |  9 ++-
 block/nbd.c                                   | 45 +++++++++++-
 nbd/client-connection.c                       | 59 ++++++++++-----
 tests/qemu-iotests/iotests.py                 | 36 ++++++----
 .../qemu-iotests/tests/nbd-reconnect-on-open  | 71 +++++++++++++++++++
 .../tests/nbd-reconnect-on-open.out           | 11 +++
 6 files changed, 199 insertions(+), 32 deletions(-)
 create mode 100755 tests/qemu-iotests/tests/nbd-reconnect-on-open
 create mode 100644 tests/qemu-iotests/tests/nbd-reconnect-on-open.out

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2.31.1