> On the ovirt-engine server, get a psql shell, e.g.,
>
>   psql -d engine -U postgres
>
> Data about running tasks are stored in the job table. You might find this
> query interesting:
>
>   select * from job order by start_time desc;
>
> Grab the job_id for the task you want to delete, then use the DeleteJob
> procedure, e.g.,
>
>   select DeleteJob('8424f7a9-2a4c-4567-b528-45bbc1c2534f');
>
> Give the web GUI a minute or so to catch up with you. The tasks should be
> gone.
>