[Qemu-devel] [PATCH v2 00/15] nbd improvements

[Paolo Bonzini <pbonzini@redhat.com>]

Here is v2 of the nbd improvements series.  It is based on Kevin's
block branch, currently at 2168851.

Compared to v1, I reordered the patches in more logical blocks.
Patches 1-4 touch sheepdog, patches 5-8 (including Stefan bdrv_flush
patch, rebased) touch the generic block layer, patches 9-15 touch NBD.

I also implemented multiple in-flight requests for the NBD client.  The
server is still serial, so there's not much benefit, but I checked that
all code paths are hit.  The changes are easy and actually cleanup the
code compared to v1.  However, it requires making discard asynchronous,
because the client has to cope with getting other replies before the
one for discard.  This is patch 8.

I didn't include the two patches already in the block branch.

v1->v2:
      moved coroutine send/recv functions out of qemu-coroutine.c
      block: added support for co_discard and aio_discard
      nbd: added support for multiple in-flight requests

Paolo Bonzini (14):
  sheepdog: add coroutine_fn markers
  add socket_set_block
  sheepdog: move coroutine send/recv function to generic code
  coroutine-io: handle zero returns from recv
  block: group together the plugging of synchronous IO emulation
  block: add bdrv_co_flush support
  block: add bdrv_co_discard and bdrv_aio_discard support
  nbd: fix error handling in the server
  nbd: add support for NBD_CMD_FLUSH
  nbd: add support for NBD_CMD_FLAG_FUA
  nbd: add support for NBD_CMD_TRIM
  nbd: switch to asynchronous operation
  nbd: split requests
  nbd: allow multiple in-flight requests

Stefan Hajnoczi (1):
  block: emulate .bdrv_flush() using .bdrv_aio_flush()

 block.c           |  228 +++++++++++++++++++++++++++++++++++++----
 block.h           |    3 +
 block/blkdebug.c  |    6 -
 block/blkverify.c |    9 --
 block/nbd.c       |  292 ++++++++++++++++++++++++++++++++++++++++++++++-------
 block/qcow.c      |    6 -
 block/qcow2.c     |   19 ----
 block/qed.c       |    6 -
 block/raw-posix.c |   18 ----
 block/sheepdog.c  |  239 ++++++--------------------------------------
 block_int.h       |   10 ++-
 cutils.c          |  183 +++++++++++++++++++++++++++++++++
 nbd.c             |   66 ++++++++++--
 oslib-posix.c     |    7 ++
 oslib-win32.c     |    6 +
 qemu-common.h     |   30 ++++++
 qemu_socket.h     |    1 +
 trace-events      |    1 +
 18 files changed, 786 insertions(+), 344 deletions(-)

-- 
1.7.6