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blockjob: introduce block-job-change QMP command

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which will allow changing job-type-specific options after job
creation.

In the JobVerbTable, the same allow bits as for set-speed are used,
because set-speed can be considered an existing change command.

Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru>
Message-ID: <20231031135431.393137-2-f.ebner@proxmox.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Fiona Ebner 2023-10-31 14:54:22 +01:00 • committed by Kevin Wolf
parent 073458da56
commit 61a3a5a76a
7 changed files with 82 additions and 1 deletions
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11
include/block/blockjob.h
View file

@ -172,6 +172,17 @@ bool block_job_has_bdrv(BlockJob *job, BlockDriverState *bs);
*/
bool block_job_set_speed_locked(BlockJob *job, int64_t speed, Error **errp);
/**
* block_job_change_locked:
* @job: The job to change.
* @opts: The new options.
* @errp: Error object.
*
* Change the job according to opts.
*/
void block_job_change_locked(BlockJob *job, BlockJobChangeOptions *opts,
Error **errp);
/**
* block_job_query_locked:
* @job: The job to get information about.

7
include/block/blockjob_int.h
View file

@ -67,6 +67,13 @@ struct BlockJobDriver {
void (*attached_aio_context)(BlockJob *job, AioContext *new_context);
void (*set_speed)(BlockJob *job, int64_t speed);
/*
* Change the @job's options according to @opts.
*
* Note that this can already be called before the job coroutine is running.
*/
void (*change)(BlockJob *job, BlockJobChangeOptions *opts, Error **errp);
};
/*