[Qemu-devel] [PATCH 00/15] block: Overriding the backing file with -drive

[Kevin Wolf]

This is the next part of the driver-specific options. Looks like we're getting
closer to pass file descriptors for the whole backing file chain. In fact, I
hope we're now only lacking QMP support before we can actually use it. :-)

This series adds support for the backing.* options namespace, and allows to use
the file.filename option to configure the filename string for non-top-level
BlockDriverStates. In the end you can use things like:

    -drive file=test.qcow2,backing.file.filename=/dev/fdset/1,
    backing.backing.file.driver=nbd,backing.backing.file.host=localhost


On another note, I'm still not sure whether I should leave all of this work
enabled for 1.5, or if we wouldn't be better off with disabling it for the
release so that we have some additional months before we commit to the
interface. Any opinions?


Kevin Wolf (15):
  block: Fail gracefully when using a format driver on protocol level
  block: Add driver-specific options for backing files
  block: Enable filename option
  raw-posix: Use bdrv_open options instead of filename
  raw-win32: Use bdrv_open options instead of filename
  blkdebug: Use bdrv_open options instead of filename
  blkverify: Use bdrv_open options instead of filename
  curl: Use bdrv_open options instead of filename
  gluster: Use bdrv_open options instead of filename
  iscsi: Use bdrv_open options instead of filename
  rbd: Use bdrv_open options instead of filename
  sheepdog: Use bdrv_open options instead of filename
  vvfat: Use bdrv_open options instead of filename
  block: Remove filename parameter from .bdrv_file_open()
  block: Allow overriding backing.file.filename

 block.c                    |  65 ++++++++++++--
 block/blkdebug.c           | 102 ++++++++++++++++------
 block/blkverify.c          |  93 ++++++++++++++++----
 block/curl.c               | 152 +++++++++++++++++++++-----------
 block/gluster.c            |  34 +++++++-
 block/iscsi.c              |  40 ++++++++-
 block/mirror.c             |   2 +-
 block/nbd.c                |   3 +-
 block/raw-posix.c          |  70 ++++++++++-----
 block/raw-win32.c          |  59 ++++++++++---
 block/rbd.c                |  32 ++++++-
 block/sheepdog.c           |  33 ++++++-
 block/vvfat.c              | 211 +++++++++++++++++++++++++++++++++------------
 include/block/block.h      |   2 +-
 include/block/block_int.h  |   3 +-
 tests/qemu-iotests/051     |   7 ++
 tests/qemu-iotests/051.out |  10 +++
 17 files changed, 713 insertions(+), 205 deletions(-)

-- 
1.8.1.4