On 27/10/2018 17:26, Diederik de Haas wrote:
mdadm - v3.4 - 28th January 2016 (Debian Stretch, version 3.4-4+b1)
OUCH!!! UPGRADE!!!Download, compile and install the updated version as per the wiki. I strongly suspect your problems are down to that bug ...
(It's a linux-only program, so you don't have all the grief with autoconf etc etc and compatibility crud :-)
Cheers, Wol
