Can't stop VM with software RAID

I have created one VM with one disk for Operating System and 3 disks for datas.

I have created 3 linear raid array on each datas disks...

I have rebooted this vm.

Now i can't shutdown it.

In the daemon.log file in xenserver i can see logs lines: can't stop VHD because still open...

The problem is the Xenserver hypervisor start 3 raid array when he mount the LV of my 3 datas disks.

The only way to shutdown this vm is to manually stop the raid array started in hypervisor with the mdadm -S /dev/mdX command.

Can i prevent the xenserver hypervisor to not start the mdadm array when he mount the vm disks LV ?