v9: Don't break older libiscsi. [patchew] v8: Fix compiling against new glibc and libiscsi on Fedora 28 where v7 had conflict definitions. [Stefan, myself] - Add HAVE_COPY_FILE_RANGE in configure. - Drop IDENT_DESCR_TGT_DESCR from scsi constants header.
v7: Fix qcow2. v6: Pick up rev-by from Stefan and Eric. Tweak patch 2 commit message. v5: - Fix raw offset/bytes check for read. [Eric] - Fix qcow2_handle_l2meta. [Stefan] - Add coroutine_fn whereever appropriate. [Stefan] v4: - Fix raw offset and size. [Eric] - iscsi: Drop unnecessary return values and variables in favor of constants. [Stefan] - qcow2: Handle small backing case. [Stefan] - file-posix: Translate ENOSYS to ENOTSUP. [Stefan] - API documentation and commit message. [Stefan] - Add rev-by to patches 3, 5 - 10. [Stefan, Eric] This series introduces block layer API for copy offloading and makes use of it in qemu-img convert. For now we implemented the operation in local file protocol with copy_file_range(2). Besides that it's possible to add similar to iscsi, nfs and potentially more. As far as its usage goes, in addition to qemu-img convert, we can emulate offloading in scsi-disk (handle EXTENDED COPY command), and use the API in block jobs too. Fam Zheng (10): block: Introduce API for copy offloading raw: Check byte range uniformly raw: Implement copy offloading qcow2: Implement copy offloading file-posix: Implement bdrv_co_copy_range iscsi: Query and save device designator when opening iscsi: Create and use iscsi_co_wait_for_task iscsi: Implement copy offloading block-backend: Add blk_co_copy_range qemu-img: Convert with copy offloading block/block-backend.c | 18 ++ block/file-posix.c | 98 +++++++++- block/io.c | 97 ++++++++++ block/iscsi.c | 314 +++++++++++++++++++++++++++++---- block/qcow2.c | 229 ++++++++++++++++++++---- block/raw-format.c | 96 +++++++--- configure | 17 ++ include/block/block.h | 32 ++++ include/block/block_int.h | 38 ++++ include/block/raw-aio.h | 10 +- include/scsi/constants.h | 4 + include/sysemu/block-backend.h | 4 + qemu-img.c | 50 +++++- 13 files changed, 908 insertions(+), 99 deletions(-) -- 2.17.0