Sigh. Spoke too soon. Ran mdadm -D while it was beeing copied to, hanged again. 2TB transferred. Guess it's directly related to the number of processes that access to the device. Won't be able to restart it until tomorrow, but I can try any suggestions on the hanged system.
Sigh. Spoke too soon. Ran mdadm -D while it was beeing copied to, hanged again. 2TB transferred. Guess it's directly related to the number of processes that access to the device. Won't be able to restart it until tomorrow, but I can try any suggestions on the hanged system.