This series implements a minimal QMP command that allows to create an image file on the protocol level or an image format on a given block node.
Eventually, the interface is going to change to some kind of an async command (possibly a (non-)block job), but that will require more work on the job infrastructure first, so let's first QAPIfy image creation in the block drivers. In this series, I'm going for a synchronous command that is prefixed with x- for now. This series converts qcow2 and all protocol drivers that allow an actual image creation. This means that drivers which only check if the already existing storage is good enough are not converted (e.g. host_device, iscsi). The old behaviour was useful because 'qemu-img create' wants to create both protocol and format layer, but with the separation in QMP, you can just leave out the protocol layer creation when the device already exists. Please note that for some of the protocol drivers (gluster, rbd and sheepdog) I don't have a test setup ready. For those, I only tested with a fake server address to check that the option are parsed correctly up to this point and an appropriate error is returned without crashing. If you are a maintainer of one of these protocols and you are interested in keeping image creation working for your protocol, you probably want to test this series on a real setup and give me some feedback. If you don't, I'll just merge the patches and hope that they won't break anything. Kevin Wolf (27): block/qapi: Introduce BlockdevCreateOptions block/qapi: Add qcow2 create options to schema qcow2: Let qcow2_create() handle protocol layer qcow2: Pass BlockdevCreateOptions to qcow2_create2() qcow2: Use BlockdevRef in qcow2_create2() qcow2: Use QCryptoBlockCreateOptions in qcow2_create2() qcow2: Handle full/falloc preallocation in qcow2_create2() util: Add qemu_opts_to_qdict_filtered() qdict: Introduce qdict_rename_keys() qcow2: Use visitor for options in qcow2_create() block: x-blockdev-create QMP command file-posix: Support .bdrv_co_create file-win32: Support .bdrv_co_create gluster: Support .bdrv_co_create rbd: Support .bdrv_co_create nfs: Use QAPI options in nfs_client_open() nfs: Support .bdrv_co_create sheepdog: QAPIfy "redundacy" create option sheepdog: Support .bdrv_co_create ssh: Use QAPI BlockdevOptionsSsh object ssh: QAPIfy host-key-check option ssh: Pass BlockdevOptionsSsh to connect_to_ssh() ssh: Support .bdrv_co_create file-posix: Fix no-op bdrv_truncate() with falloc preallocation block: Fail bdrv_truncate() with negative size qemu-iotests: Test qcow2 over file image creation with QMP qemu-iotests: Test ssh image creation over QMP qapi/block-core.json | 326 ++++++++++++++++++++++++++++++++- include/block/block.h | 2 + include/block/block_int.h | 2 + include/qapi/qmp/qdict.h | 6 + include/qemu/option.h | 2 + block.c | 54 +++++- block/create.c | 75 ++++++++ block/file-posix.c | 91 +++++++--- block/file-win32.c | 45 ++++- block/gluster.c | 149 ++++++++++------ block/nfs.c | 236 +++++++++++------------- block/qcow2.c | 386 +++++++++++++++++++++++++-------------- block/rbd.c | 137 +++++++++----- block/sheepdog.c | 286 ++++++++++++++++++++--------- block/ssh.c | 298 +++++++++++++++++-------------- qobject/qdict.c | 30 ++++ util/qemu-option.c | 37 +++- block/Makefile.objs | 2 +- tests/qemu-iotests/049.out | 8 +- tests/qemu-iotests/112.out | 4 +- tests/qemu-iotests/206 | 436 +++++++++++++++++++++++++++++++++++++++++++++ tests/qemu-iotests/206.out | 209 ++++++++++++++++++++++ tests/qemu-iotests/207 | 261 +++++++++++++++++++++++++++ tests/qemu-iotests/207.out | 75 ++++++++ tests/qemu-iotests/group | 2 + 25 files changed, 2525 insertions(+), 634 deletions(-) create mode 100644 block/create.c create mode 100755 tests/qemu-iotests/206 create mode 100644 tests/qemu-iotests/206.out create mode 100755 tests/qemu-iotests/207 create mode 100644 tests/qemu-iotests/207.out -- 2.13.6