On Tue, Aug 16, 2016 at 12:33 PM, <linux@xxxxxxxxxxxxxxx> wrote: > The array was originally created well over a year ago, perhaps 2 or 3 years > ago. It was working great. When the machine was updated to CentOS 7, the > raid assembled manually fine and was mountable only once. After rebooting > and trying to mount in /etc/fstab it could no longer be assembled and > mounted... How do you explain your mdadm -E and -D output, which shows the creation time 10 days ago? > =============================================== > "sudo mdadm -D /dev/md127" results > =============================================== > > /dev/md127: > Version : 1.2 > Creation Time : Fri Aug 5 16:46:10 2016 Further the -E output shows Events: 0 which means the array you're showing us has never been used. The only explanation I can think of is you used mdadm --create, but something significant is missing from your explanation because there is no possible way a normal mount or assemble changes the Creation Time of the array, or the Event count. But --create will do that. -- Chris Murphy -- 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