With these two patches, I'm finally able to run: ./qemu-nbd -f raw -x foo file ./qemu-io -f raw -t none nbd://localhost:10809/foo
and get true byte-based access over the wire for operations such as 'r 1 1' or 'w 1 1', rather than RMW sector-aligned access. Depends on these series: v3 Byte-based block limits: https://lists.gnu.org/archive/html/qemu-devel/2016-06/msg06983.html v1 Auto-fragment large transactions at the block layer: https://lists.gnu.org/archive/html/qemu-devel/2016-06/msg05819.html v1 byte-based block discard: https://lists.gnu.org/archive/html/qemu-devel/2016-06/msg06491.html Eric Blake (2): nbd: Convert to byte-based interface raw_bsd: Convert to byte-based interface block/nbd-client.h | 8 ++++---- include/block/nbd.h | 1 - block/nbd-client.c | 30 +++++++++++++++++------------- block/nbd.c | 12 ++++++------ block/raw_bsd.c | 35 +++++++++++++++++------------------ 5 files changed, 44 insertions(+), 42 deletions(-) -- 2.5.5
