On Sat, Oct 28, 2017 at 12:10 PM, Jun-Kai Teoh <kai.teoh@xxxxxxxxx> wrote: > The array did have data in it when I added a new drive to it, it > wasn't a blank/empty array. I was trying to expand its size when my > computer went down. I'm really hoping it can be rescued. =/ > <SNIP> I understand that the array had data. However, RAID5 can suffer 1 drive being out of the array and still appear to be working. 1) Prior to adding the drive did you look at cat /proc/mdstat and note status of the original 7 drives? 2) Do you scrub your RAID routinely, as in a crontab entry or some other method? 3) What kind of drives are these. smartctl output will help, ala: c2RAID6 ~ # smartctl -a /dev/sda smartctl 6.4 2015-06-04 r4109 [x86_64-linux-4.12.12-gentoo] (local build) Copyright (C) 2002-15, Bruce Allen, Christian Franke, www.smartmontools.org === START OF INFORMATION SECTION === Model Family: Western Digital Red Device Model: WDC WD30EFRX-68EUZN0 Provide all smartctl output for all 8 drives Just giving guidance to get you setup for a faster response when folks come back after the weekend. I am not a RAID expert and won't supply commands to get it working. At this time do NOT do anything to force the array back together. More people seem to cause problems trying to do that before getting input. Better that you wait. Good luck, Mark -- 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
