On Fri, 13 Jan 2012 13:14:02 +0000 Stefan Hajnoczi <stefa...@linux.vnet.ibm.com> wrote:
> Note: This is a resend of v5 because the emails I sent earlier today > disappeared. > > This series adds the 'block_stream' command which copies the contents of a > backing file into the image file while the VM is running. The series builds > on > the zero detection features which I sent out before Christmas. I suggest > grabbing my git tree to try it out without merging this dependency: > > https://github.com/stefanha/qemu/tree/image-streaming-api > > The image streaming HMP/QMP commands are documented in the patch and also > described here: > > http://wiki.qemu.org/Features/LiveBlockMigration/ImageStreamingAPI As far as QMP is concerned: Acked-by: Luiz Capitulino <lcapitul...@redhat.com> > > The basic idea is to execute 'block_stream virtio0' while the guest is > running. > Progress can be monitored using 'info block-jobs'. When the streaming > operation completes it raises a QMP event. > > Note: The last patch includes includes a Python test script called > test-stream.py, I do not propose to merge it. When run in a QEMU source tree > it performs basic image streaming QMP tests. > > v5: > * Handle block_job_create() failure [Luiz] > * Mark BLOCK_JOB_COMPLETED error field optional [Luiz] > * Mark block_stream base parameter optional [Luiz] > * Check bdrv_getlength() failure and don't call twice [Kevin] > * Rename "id" to "backing_file" in bdrv_find_backing_image() [Kevin] > * Rename BaseIdNotFound qerror to BaseNotFound [Kevin] > * Document BaseNotFound qerror from block_stream > * Document that qemu_co_sleep_ns() needs main loop [Kevin] > * Make bdrv_co_is_allocated_base() private to block/stream.c [Kevin] > * Clean up commit messages > > v4: > * Drop SQMP/EQMP docs from qmp-commands.hx [Luiz] > * Follow QAPI doc conventions [Luiz] > * Document QMP events in QMP/qmp-events.txt [Luiz] > * Protect against hotplug, resize, eject, etc [Kevin] > * Move block job functions from header to block.c [Kevin] > * Return error from bdrg_change_backing_file() [Kevin] > * Merge Marcelo's block_stream base partial streaming series [Marcelo] > > Marcelo Tosatti (4): > block: add bdrv_find_backing_image > add QERR_BASE_NOT_FOUND > block: add support for partial streaming > docs: describe live block operations > > Stefan Hajnoczi (11): > coroutine: add co_sleep_ns() coroutine sleep function > block: check bdrv_in_use() before blockdev operations > block: add BlockJob interface for long-running operations > block: add image streaming block job > block: rate-limit streaming operations > qmp: add block_stream command > qmp: add block_job_set_speed command > qmp: add block_job_cancel command > qmp: add query-block-jobs > blockdev: make image streaming safe across hotplug > test: add image streaming test cases > > Makefile.objs | 2 + > QMP/qmp-events.txt | 53 ++++++++++ > block.c | 70 +++++++++++++ > block.h | 2 + > block/stream.c | 260 > +++++++++++++++++++++++++++++++++++++++++++++++ > block_int.h | 44 ++++++++ > blockdev.c | 199 +++++++++++++++++++++++++++++++++++- > docs/live-block-ops.txt | 58 +++++++++++ > hmp-commands.hx | 41 ++++++++ > hmp.c | 68 ++++++++++++ > hmp.h | 4 + > monitor.c | 13 +++ > monitor.h | 2 + > qapi-schema.json | 116 +++++++++++++++++++++ > qemu-coroutine-sleep.c | 38 +++++++ > qemu-coroutine.h | 9 ++ > qerror.c | 8 ++ > qerror.h | 6 + > qmp-commands.hx | 24 +++++ > test-stream.py | 208 +++++++++++++++++++++++++++++++++++++ > trace-events | 9 ++ > 21 files changed, 1233 insertions(+), 1 deletions(-) > create mode 100644 block/stream.c > create mode 100644 docs/live-block-ops.txt > create mode 100644 qemu-coroutine-sleep.c > create mode 100644 test-stream.py >
