On 11/28/2016 03:02 PM, Wols Lists wrote: > In My Experience (I'll probably get told I'm wrong :-) mdadm.conf seems > to be pretty much ignored by modern systems. And md numbers now by > default count down from 127, not up from 0. mdadm.conf is *not* ignored. Defaults are taken if it isn't found, or doesn't contain the info needed. Most modern systems have two copies of mdadm.conf. One in the initramfs so you can boot a root filesystem that is inside an array, and the other in your root filesystem to assemble everything else. Most distros copy the latter to the former when updating the initramfs. You may have to manually trigger this operation when you are re-arranging your arrays. You also have to manually intervene if you want your initramfs to have a different mdadm.conf, like a two-phase assembly. mdadm has been counting down from 127 for as long as I've used it. Phil -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html