On 03/30/2016 05:19 PM, Peter Knight wrote: > Hi, > > I hope someone can explain what is going on and hopefully help me > recover my data. > What is causing this? and how can I get it reassembled so I can read the data? When mdadm assembles an array during boot that has fewer devices than when it was last shut down (cleanly), it generally declines to start it. Probably, all you need is: mdadm --run /dev/md126 { --detail may not be accurate on an inactive device. The member --examine data is trustworthy. } 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