On 05/30/2016 10:43 PM, Peckins, Steven E wrote: > > I have a system with a 9+1 disk RAID6 array that has "3 drives and 1 spare - not enough to start the array." The metadata version is 1.1; mdadm version is v3.3. > > The component devices in the array are supposed to be multipath devices (dm-multipath), but for some reason, when the server was restarted, md grabbed both dm-* components and raw devices. I *think* that this is what caused the problem. Quite possible. You probably need a DEVICES clause in your mdadm.conf to exclude the raw devices from the arrays. > I'm seeking advice on how to proceed at this point. If more information is required, please ask. Hmmm. The partial success on mdadm --force suggests trying that again. Possible with --force twice on the command line. Forced assembly is precisely what you need -- don't despair and attempt anything else. Do review /proc/mdstat before each assembly attempt to make sure nothing is partially assembled with those devices or the underlying raw devices. 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
