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[Qemu-devel] [PATCH v6 00/16] block: generic image streaming
From: |
Stefan Hajnoczi |
Subject: |
[Qemu-devel] [PATCH v6 00/16] block: generic image streaming |
Date: |
Wed, 18 Jan 2012 14:40:39 +0000 |
This series adds the 'block_stream' command which copies the contents of a
backing file into the image file while the VM is running. These patches are
based on Kevin Wolf's block tree. Previously this series was based on the zero
detection series but Kevin pointed out there is no hard dependency, so they are
now independent.
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.
v6:
* Use per-request copy-on-read when doing partial streaming [Kevin]
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]
Luiz has reviewed the QMP/QAPI parts, which remain unchanged from v5.
Acked-by: Luiz Capitulino <address@hidden>
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 (12):
coroutine: add co_sleep_ns() coroutine sleep function
block: check bdrv_in_use() before blockdev operations
block: make copy-on-read a per-request flag
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 | 119 +++++++++++++++++++--
block.h | 4 +
block/stream.c | 269 +++++++++++++++++++++++++++++++++++++++++++++++
block_int.h | 47 ++++++++
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 | 12 ++-
21 files changed, 1287 insertions(+), 13 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
--
1.7.8.3
- [Qemu-devel] [PATCH v6 00/16] block: generic image streaming,
Stefan Hajnoczi <=
- [Qemu-devel] [PATCH v6 02/16] block: check bdrv_in_use() before blockdev operations, Stefan Hajnoczi, 2012/01/18
- [Qemu-devel] [PATCH v6 04/16] block: add BlockJob interface for long-running operations, Stefan Hajnoczi, 2012/01/18
- [Qemu-devel] [PATCH v6 01/16] coroutine: add co_sleep_ns() coroutine sleep function, Stefan Hajnoczi, 2012/01/18
- [Qemu-devel] [PATCH v6 05/16] block: add image streaming block job, Stefan Hajnoczi, 2012/01/18
- [Qemu-devel] [PATCH v6 06/16] block: rate-limit streaming operations, Stefan Hajnoczi, 2012/01/18
- [Qemu-devel] [PATCH v6 08/16] qmp: add block_job_set_speed command, Stefan Hajnoczi, 2012/01/18
- [Qemu-devel] [PATCH v6 07/16] qmp: add block_stream command, Stefan Hajnoczi, 2012/01/18
- [Qemu-devel] [PATCH v6 03/16] block: make copy-on-read a per-request flag, Stefan Hajnoczi, 2012/01/18
- [Qemu-devel] [PATCH v6 11/16] blockdev: make image streaming safe across hotplug, Stefan Hajnoczi, 2012/01/18
- [Qemu-devel] [PATCH v6 13/16] add QERR_BASE_NOT_FOUND, Stefan Hajnoczi, 2012/01/18