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commit: Add 'job-id' parameter to 'block-commit'

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This patch adds a new optional 'job-id' parameter to 'block-commit',
allowing the user to specify the ID of the block job to be created.

Signed-off-by: Alberto Garcia <berto@igalia.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Alberto Garcia 2016-07-05 17:29:00 +03:00 committed by Kevin Wolf
parent 2323322ed0
commit fd62c609ed
7 changed files with 30 additions and 19 deletions
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7
block/commit.c
View File

@ -211,8 +211,8 @@ static const BlockJobDriver commit_job_driver = {
.set_speed = commit_set_speed,
};
void commit_start(BlockDriverState *bs, BlockDriverState *base,
BlockDriverState *top, int64_t speed,
void commit_start(const char *job_id, BlockDriverState *bs,
BlockDriverState *base, BlockDriverState *top, int64_t speed,
BlockdevOnError on_error, BlockCompletionFunc *cb,
void *opaque, const char *backing_file_str, Error **errp)
{
@ -236,7 +236,8 @@ void commit_start(BlockDriverState *bs, BlockDriverState *base,
return;
}
s = block_job_create(NULL, &commit_job_driver, bs, speed, cb, opaque, errp);
s = block_job_create(job_id, &commit_job_driver, bs, speed,
cb, opaque, errp);
if (!s) {
return;
}

6
block/mirror.c
View File

@ -931,8 +931,8 @@ void mirror_start(const char *job_id, BlockDriverState *bs,
&mirror_job_driver, is_none_mode, base);
}
void commit_active_start(BlockDriverState *bs, BlockDriverState *base,
int64_t speed,
void commit_active_start(const char *job_id, BlockDriverState *bs,
BlockDriverState *base, int64_t speed,
BlockdevOnError on_error,
BlockCompletionFunc *cb,
void *opaque, Error **errp)
@ -973,7 +973,7 @@ void commit_active_start(BlockDriverState *bs, BlockDriverState *base,
}
}
mirror_start_job(NULL, bs, base, NULL, speed, 0, 0,
mirror_start_job(job_id, bs, base, NULL, speed, 0, 0,
MIRROR_LEAVE_BACKING_CHAIN,
on_error, on_error, false, cb, opaque, &local_err,
&commit_active_job_driver, false, base);

9
blockdev.c
View File

@ -3077,7 +3077,7 @@ out:
aio_context_release(aio_context);
}
void qmp_block_commit(const char *device,
void qmp_block_commit(bool has_job_id, const char *job_id, const char *device,
bool has_base, const char *base,
bool has_top, const char *top,
bool has_backing_file, const char *backing_file,
@ -3168,10 +3168,11 @@ void qmp_block_commit(const char *device,
" but 'top' is the active layer");
goto out;
}
commit_active_start(bs, base_bs, speed, on_error, block_job_cb,
bs, &local_err);
commit_active_start(has_job_id ? job_id : NULL, bs, base_bs, speed,
on_error, block_job_cb, bs, &local_err);
} else {
commit_start(bs, base_bs, top_bs, speed, on_error, block_job_cb, bs,
commit_start(has_job_id ? job_id : NULL, bs, base_bs, top_bs, speed,
on_error, block_job_cb, bs,
has_backing_file ? backing_file : NULL, &local_err);
}
if (local_err != NULL) {

16
include/block/block_int.h
View File

@ -666,6 +666,8 @@ void stream_start(const char *job_id, BlockDriverState *bs,
/**
* commit_start:
* @job_id: The id of the newly-created job, or %NULL to use the
* device name of @bs.
* @bs: Active block device.
* @top: Top block device to be committed.
* @base: Block device that will be written into, and become the new top.
@ -677,12 +679,14 @@ void stream_start(const char *job_id, BlockDriverState *bs,
* @errp: Error object.
*
*/
void commit_start(BlockDriverState *bs, BlockDriverState *base,
BlockDriverState *top, int64_t speed,
BlockdevOnError on_error, BlockCompletionFunc *cb,
void *opaque, const char *backing_file_str, Error **errp);
void commit_start(const char *job_id, BlockDriverState *bs,
BlockDriverState *base, BlockDriverState *top, int64_t speed,
BlockdevOnError on_error, BlockCompletionFunc *cb,
void *opaque, const char *backing_file_str, Error **errp);
/**
* commit_active_start:
* @job_id: The id of the newly-created job, or %NULL to use the
* device name of @bs.
* @bs: Active block device to be committed.
* @base: Block device that will be written into, and become the new top.
* @speed: The maximum speed, in bytes per second, or 0 for unlimited.
@ -692,8 +696,8 @@ void commit_start(BlockDriverState *bs, BlockDriverState *base,
* @errp: Error object.
*
*/
void commit_active_start(BlockDriverState *bs, BlockDriverState *base,
int64_t speed,
void commit_active_start(const char *job_id, BlockDriverState *bs,
BlockDriverState *base, int64_t speed,
BlockdevOnError on_error,
BlockCompletionFunc *cb,
void *opaque, Error **errp);

5
qapi/block-core.json
View File

@ -1010,6 +1010,9 @@
# Live commit of data from overlay image nodes into backing nodes - i.e.,
# writes data between 'top' and 'base' into 'base'.
#
# @job-id: #optional identifier for the newly-created block job. If
# omitted, the device name will be used. (Since 2.7)
#
# @device: the name of the device
#
# @base: #optional The file name of the backing image to write data into.
@ -1061,7 +1064,7 @@
#
##
{ 'command': 'block-commit',
'data': { 'device': 'str', '*base': 'str', '*top': 'str',
'data': { '*job-id': 'str', 'device': 'str', '*base': 'str', '*top': 'str',
'*backing-file': 'str', '*speed': 'int' } }
##

2
qemu-img.c
View File

@ -920,7 +920,7 @@ static int img_commit(int argc, char **argv)
.bs = bs,
};
commit_active_start(bs, base_bs, 0, BLOCKDEV_ON_ERROR_REPORT,
commit_active_start(NULL, bs, base_bs, 0, BLOCKDEV_ON_ERROR_REPORT,
common_block_job_cb, &cbi, &local_err);
if (local_err) {
goto done;

4
qmp-commands.hx
View File

@ -1151,7 +1151,7 @@ EQMP
{
.name = "block-commit",
.args_type = "device:B,base:s?,top:s?,backing-file:s?,speed:o?",
.args_type = "job-id:s?,device:B,base:s?,top:s?,backing-file:s?,speed:o?",
.mhandler.cmd_new = qmp_marshal_block_commit,
},
@ -1164,6 +1164,8 @@ data between 'top' and 'base' into 'base'.
Arguments:
- "job-id": Identifier for the newly-created block job. If omitted,
the device name will be used. (json-string, optional)
- "device": The device's ID, must be unique (json-string)
- "base": The file name of the backing image to write data into.
If not specified, this is the deepest backing image