I am trying to re-create a raid5 after re-installing the OS. Unfortunately my initial try was not successful and I probably messed things up. I saved the original disk information (see below). What would be the mdadm --create command with the correct additional parameters? /dev/sde: Magic : a92b4efc Version : 0.90.00 UUID : 208886f0:0b0c5d65:d1ecd824:5a220e5e (local to host niederhorn) Creation Time : Mon Jul 2 00:08:03 2012 Raid Level : raid5 Used Dev Size : 1953514496 (1863.02 GiB 2000.40 GB) Array Size : 7814057984 (7452.07 GiB 8001.60 GB) Raid Devices : 5 Total Devices : 5 Preferred Minor : 0 Update Time : Sat Apr 26 11:03:04 2014 State : clean Active Devices : 5 Working Devices : 5 Failed Devices : 0 Spare Devices : 0 Checksum : 188e511f - correct Events : 33568 Layout : left-symmetric Chunk Size : 64K Number Major Minor RaidDevice State this 0 8 96 0 active sync /dev/sdg 0 0 8 96 0 active sync /dev/sdg 1 1 8 112 1 active sync /dev/sdh 2 2 8 128 2 active sync /dev/sdi 3 3 8 144 3 active sync /dev/sdj 4 4 8 160 4 active sync /dev/sdk root@niederhorn:/home/xbmc# mdadm --examine /dev/sdf /dev/sdf: Magic : a92b4efc Version : 0.90.00 UUID : 208886f0:0b0c5d65:d1ecd824:5a220e5e (local to host niederhorn) Creation Time : Mon Jul 2 00:08:03 2012 Raid Level : raid5 Used Dev Size : 1953514496 (1863.02 GiB 2000.40 GB) Array Size : 7814057984 (7452.07 GiB 8001.60 GB) Raid Devices : 5 Total Devices : 5 Preferred Minor : 0 Update Time : Sat Apr 26 11:03:04 2014 State : clean Active Devices : 5 Working Devices : 5 Failed Devices : 0 Spare Devices : 0 Checksum : 188e5131 - correct Events : 33568 Layout : left-symmetric Chunk Size : 64K Number Major Minor RaidDevice State this 1 8 112 1 active sync /dev/sdh 0 0 8 96 0 active sync /dev/sdg 1 1 8 112 1 active sync /dev/sdh 2 2 8 128 2 active sync /dev/sdi 3 3 8 144 3 active sync /dev/sdj 4 4 8 160 4 active sync /dev/sdk root@niederhorn:/home/xbmc# mdadm --examine /dev/sdg /dev/sdg: Magic : a92b4efc Version : 0.90.00 UUID : 208886f0:0b0c5d65:d1ecd824:5a220e5e (local to host niederhorn) Creation Time : Mon Jul 2 00:08:03 2012 Raid Level : raid5 Used Dev Size : 1953514496 (1863.02 GiB 2000.40 GB) Array Size : 7814057984 (7452.07 GiB 8001.60 GB) Raid Devices : 5 Total Devices : 5 Preferred Minor : 0 Update Time : Sat Apr 26 11:03:04 2014 State : clean Active Devices : 5 Working Devices : 5 Failed Devices : 0 Spare Devices : 0 Checksum : 188e5143 - correct Events : 33568 Layout : left-symmetric Chunk Size : 64K Number Major Minor RaidDevice State this 2 8 128 2 active sync /dev/sdi 0 0 8 96 0 active sync /dev/sdg 1 1 8 112 1 active sync /dev/sdh 2 2 8 128 2 active sync /dev/sdi 3 3 8 144 3 active sync /dev/sdj 4 4 8 160 4 active sync /dev/sdk root@niederhorn:/home/xbmc# mdadm --examine /dev/sdh /dev/sdh: Magic : a92b4efc Version : 0.90.00 UUID : 208886f0:0b0c5d65:d1ecd824:5a220e5e (local to host niederhorn) Creation Time : Mon Jul 2 00:08:03 2012 Raid Level : raid5 Used Dev Size : 1953514496 (1863.02 GiB 2000.40 GB) Array Size : 7814057984 (7452.07 GiB 8001.60 GB) Raid Devices : 5 Total Devices : 5 Preferred Minor : 0 Update Time : Sat Apr 26 11:03:04 2014 State : clean Active Devices : 5 Working Devices : 5 Failed Devices : 0 Spare Devices : 0 Checksum : 188e5155 - correct Events : 33568 Layout : left-symmetric Chunk Size : 64K Number Major Minor RaidDevice State this 3 8 144 3 active sync /dev/sdj 0 0 8 96 0 active sync /dev/sdg 1 1 8 112 1 active sync /dev/sdh 2 2 8 128 2 active sync /dev/sdi 3 3 8 144 3 active sync /dev/sdj 4 4 8 160 4 active sync /dev/sdk root@niederhorn:/home/xbmc# mdadm --examine /dev/sdi /dev/sdi: Magic : a92b4efc Version : 0.90.00 UUID : 208886f0:0b0c5d65:d1ecd824:5a220e5e (local to host niederhorn) Creation Time : Mon Jul 2 00:08:03 2012 Raid Level : raid5 Used Dev Size : 1953514496 (1863.02 GiB 2000.40 GB) Array Size : 7814057984 (7452.07 GiB 8001.60 GB) Raid Devices : 5 Total Devices : 5 Preferred Minor : 0 Update Time : Sat Apr 26 11:03:04 2014 State : clean Active Devices : 5 Working Devices : 5 Failed Devices : 0 Spare Devices : 0 Checksum : 188e5167 - correct Events : 33568 Layout : left-symmetric Chunk Size : 64K Number Major Minor RaidDevice State this 4 8 160 4 active sync /dev/sdk 0 0 8 96 0 active sync /dev/sdg 1 1 8 112 1 active sync /dev/sdh 2 2 8 128 2 active sync /dev/sdi 3 3 8 144 3 active sync /dev/sdj 4 4 8 160 4 active sync /dev/sdk -- 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