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[Qemu-devel] [PATCH v5 00/15] block: generic image streaming
From: |
Stefan Hajnoczi |
Subject: |
[Qemu-devel] [PATCH v5 00/15] block: generic image streaming |
Date: |
Fri, 13 Jan 2012 13:14:02 +0000 |
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
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
--
1.7.7.3