[Qemu-devel] [PATCH v4 00/10] Modify block jobs to use node-names

[Jeff Cody]

This is v4 of "block: Modify block-commit to use node-names".

Changes from v3->v4:

* Rebased on master
* Dropped overlay pointers, Eric's concerns are correct
* Require "device" for all arguments, in light of the above,
  so we can find the active layer in all cases.
* Simplify more operations!
* Dropped Eric's Reviewed-by: on patches 3,5,6
  Added Eric's Reviewed-by: on patches 8,9


Changes from v2->v3:

* 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 (10):
  block: Auto-generate node_names for each BDS entry
  block: add helper function to determine if a BDS is in a chain
  block: simplify bdrv_find_base() and bdrv_find_overlay()
  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                   |  80 ++++++++--------
 block/commit.c            |   9 +-
 block/stream.c            |  11 +--
 blockdev.c                | 228 ++++++++++++++++++++++++++++++++++++++++++----
 hmp.c                     |   1 +
 include/block/block.h     |   4 +-
 include/block/block_int.h |   3 +-
 qapi-schema.json          | 145 ++++++++++++++++++++++++++---
 qmp-commands.hx           | 181 ++++++++++++++++++++++++++++++++++--
 tests/qemu-iotests/040    |  28 ++++--
 10 files changed, 592 insertions(+), 98 deletions(-)

-- 
1.9.3