See the cross-post cover letter for more details:
https://www.redhat.com/archives/libguestfs/2019-August/msg00322.html
Based-on:
https://lists.gnu.org/archive/html/qemu-devel/2019-08/msg04805.html
[Andrey Shinkevich block: workaround for unaligned byte range in fallocate()]
Eric Blake (5):
nbd: Improve per-export flag handling in server
nbd: Prepare for NBD_CMD_FLAG_FAST_ZERO
nbd: Implement client use of NBD FAST_ZERO
nbd: Implement server use of NBD FAST_ZERO
nbd: Tolerate more errors to structured reply request
docs/interop/nbd.txt | 3 +-
include/block/nbd.h | 6 +++-
block/nbd.c | 7 +++++
blockdev-nbd.c | 3 +-
nbd/client.c | 39 ++++++++++++++----------
nbd/common.c | 5 ++++
nbd/server.c | 70 ++++++++++++++++++++++++++------------------
qemu-nbd.c | 7 +++--
8 files changed, 88 insertions(+), 52 deletions(-)
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2.21.0