Comment 3 for bug 1456276

The question is: was this md meant to be removed? It's obviously not md device, which fuel created some time in the past. It is Raid 0 and metadata version is 1.2. So, it's kinda user defined md device. Currently, Fuel Agent does have just rudimentary decommission support which is supposed to erase everything (all lvm, md, most plain partitions), but sometimes fails to do this.

I'd say this issue is medium. Probably, we could add some additional logic (fuser) to try to figure out which processes use this md and try to kill them. But, frankly, we need to develop our decommission feature to make it mature and data driven.