block: add block-job-complete

While streaming can be dropped as soon as it progressed through the whole
image, mirroring needs to be completed manually for two reasons: 1) so that
management knows exactly when the VM switches to the target; 2) because
for other use cases such as replication, we may leave the operation running
for the whole life of the virtual machine.

Add a new block job command that manually completes background operations.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>

1 files changed, 10 insertions, 0 deletions

diff --git a/blockjob.c b/blockjob.c
index b5c16f3766..c93a0e0187 100644
--- a/blockjob.c
+++ b/blockjob.c
@@ -99,6 +99,16 @@ void block_job_set_speed(BlockJob *job, int64_t speed, Error **errp)
     job->speed = speed;
 }
 
+void block_job_complete(BlockJob *job, Error **errp)
+{
+    if (job->paused || job->cancelled || !job->job_type->complete) {
+        error_set(errp, QERR_BLOCK_JOB_NOT_READY, job->bs->device_name);
+        return;
+    }
+
+    job->job_type->complete(job, errp);
+}
+
 void block_job_pause(BlockJob *job)
 {
     job->paused = true;