Error
dr: Device busy: resource
Description
Translation of possible EBUSY errno from cpu_configure or cpu_unconfigure; or an
I/O device cannot be detached because it is busy.
This error message is also returned if a CPU to be detached is online when dr_pre_detach_cpu is called.
A CPU cannot be detached while a delete memory operation is in progress.
Recovery
Use showdevices(1M) on the system controller to find out why the resource is busy. Or, on the domain, use
fuser(1M), psrinfo(1M), prtdiag(1M), or similar tools to find out why the device is busy.
Also check if another memory deletion is already in progress. Either
reconfigure or shutdown whatever is consuming the resource, or wait for the
previous memory deletion to complete depending, on the cause of the error. Then retry the DR operation.