Hi, One of our servers went trough an OS upgrade (from fedora20 to fedora21) and althou some of the arrays seem to be auto-detected one of them seem to be missing. I have some info related to the array in question: 115 /dev/md2: 116 Version : 0.90 117 Creation Time : Mon Feb 11 07:54:36 2013 118 Raid Level : raid5 119 Array Size : 511999872 (488.28 GiB 524.29 GB) 120 Used Dev Size : 255999936 (244.14 GiB 262.14 GB) 121 Raid Devices : 3 122 Total Devices : 3 123 Preferred Minor : 2 124 Persistence : Superblock is persistent 125 126 Update Time : Sun Mar 22 18:23:38 2015 127 State : clean 128 Active Devices : 3 129 Working Devices : 3 130 Failed Devices : 0 131 Spare Devices : 0 132 133 Layout : left-symmetric 134 Chunk Size : 64K 135 136 UUID : 2cff15d1:e411447b:fd5d4721:03e44022 (local to host lamachine) 137 Events : 0.478 138 139 Number Major Minor RaidDevice State 140 0 8 3 0 active sync /dev/sda3 141 1 8 18 1 active sync /dev/sdb2 142 2 8 34 2 active sync /dev/sdc2 I haven't taken any actions to try to re-assemble the array and wanted to check for ideas/suggestions here first. Any advice you might regarding the steps to take to get the array up and runnign again is higy appreciated. Thanks in advance, Daniel -- 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