[Qemu-devel] [PATCH v3 00/12] Modify block jobs to use node-names

[Jeff Cody]

Note: this is a resend - forgot "PATCH" in the subject in 
      the last mailing.

This is v3 of "block: Modify block-commit to use node-names".

Changes:

* Add Eric's reviewed-by
* Addressed Eric's review comments
* Dropped HMP changes
* Added helper function for setting the overlay, and
  set the overlay in bdrv_append()
* Use bs->backing_file instead of bs->backing_hd->filename in block_stream 

Using node-names instead of filenames for block job operations
over QMP is a superior method of identifying the block driver
images to operate on, as it removes all pathname ambiguity.

This series modifies block-commit and block-stream to use node-names,
and creates a new QAPI command to allow stand-alone backing file
changes on an image file.

So that node-names can be used as desired for all block job
operations, this series also auto-generates node-names for every
BDS.  User-specified node-names will override any autogenerated

Jeff Cody (12):
  block: Auto-generate node_names for each BDS entry
  block: add helper function to determine if a BDS is in a chain
  block: Add overlay BDS pointer into the BlockDriverState struct
  block: add helper function to find the active layer of any BDS
  block: simplify bdrv_find_base()
  block: make 'top' argument to block-commit optional
  block: Accept node-name arguments for block-commit
  block: extend block-commit to accept a string for the backing file
  block: add ability for block-stream to use node-name
  block: add backing-file option to block-stream
  block: Add QMP documentation for block-stream
  block: add QAPI command to allow live backing file change

 block.c                   |  71 +++++++++--
 block/commit.c            |   9 +-
 block/stream.c            |  11 +-
 blockdev.c                | 291 ++++++++++++++++++++++++++++++++++++++++++----
 hmp.c                     |   3 +-
 include/block/block.h     |   6 +-
 include/block/block_int.h |   4 +-
 qapi-schema.json          | 152 ++++++++++++++++++++++--
 qmp-commands.hx           | 187 +++++++++++++++++++++++++++--
 tests/qemu-iotests/040    |  28 +++--
 10 files changed, 685 insertions(+), 77 deletions(-)

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1.8.3.1