[Libguestfs] [PATCH 0/5] Add NBD fast zero support to qemu client and server

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(-) -- 2.21.0