[Qemu-devel] [PATCH 0/4 for-3.0?] NBD fixes for unaligned images

[Eric Blake]

Rich reported a bug when using qemu as client to nbdkit serving
a non-sector-aligned image; in turn, I found a second bug with
qemu as server of such an image.

Both bugs were present in 2.12, and thus are not new regressions
in 3.0. If there is a reason to spin -rc4, then these could be
included; but this series alone is not a driving reason to cause
-rc4.

Eric Blake (4):
  block: Add bdrv_get_request_alignment()
  nbd/server: Advertise actual minimum block size
  iotests: Add 228 to test NBD on unaligned images
  nbd/client: Deal with unaligned size from server

 include/sysemu/block-backend.h |  1 +
 block/block-backend.c          |  7 +++
 block/nbd.c                    | 11 ++++-
 nbd/server.c                   | 10 +++--
 tests/qemu-iotests/228         | 96 ++++++++++++++++++++++++++++++++++++++++++
 tests/qemu-iotests/228.out     |  8 ++++
 tests/qemu-iotests/group       |  1 +
 7 files changed, 129 insertions(+), 5 deletions(-)
 create mode 100755 tests/qemu-iotests/228
 create mode 100644 tests/qemu-iotests/228.out

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2.14.4