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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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20
blockjob.c
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@ -330,6 +330,26 @@ static bool block_job_set_speed(BlockJob *job, int64_t speed, Error **errp)
return block_job_set_speed_locked(job, speed, errp);
}
void block_job_change_locked(BlockJob *job, BlockJobChangeOptions *opts,
Error **errp)
{
const BlockJobDriver *drv = block_job_driver(job);
GLOBAL_STATE_CODE();
if (job_apply_verb_locked(&job->job, JOB_VERB_CHANGE, errp)) {
return;
}
if (drv->change) {
job_unlock();
drv->change(job, opts, errp);
job_lock();
} else {
error_setg(errp, "Job type does not support change");
}
}
void block_job_ratelimit_processed_bytes(BlockJob *job, uint64_t n)
{
IO_CODE();