It started off a fairly simple project, install 2 new drives and use those in combination with 2 existing drives to store my music and movie collection. (about 7-10 years worth of collecting.) I installed the drives fine, Created a raid 1 from the 2 new drives and reshaped it into a 2 disk raid 5 as suggested here: http://scott.wallace.sh/node/1521 After the drives resynced, I moved my data into it and added my 2 existing drives as the article instructed. Looking back, it probably would have been better to do it one at time. During the second resync, the Murphy struck; 1 of the old drives failed and the other stopped. I figured a missing disk shouldn't be too much of a problem, being a raid 5 array, but in the middle of a resync, it probably was not good. Of course I was doing this with no backup. Now that you know my life story, I pose this question. I am trying to bring the array back on-line with the 3 remaining disks to finish the resync, but mdadm is not cooperating. Please Help! gentoofs ~#mdadm --assemble /dev/md1 /dev/sdc /dev/sdd /dev/sdf mdadm: /dev/md1 assembled from 2 drives - not enough to start the array The results of cat /proc/mdstat are: Personalities : [raid1] [raid6] [raid5] [raid4] md1 : inactive sdd[0](S) sdc[2](S) sdf[1](S) 1465158912 blocks unused devices: <none>\ The results of mdstat --query /dev/md1 /dev/sdc /dev/sdd /dev/sdf are: /dev/md1: is an md device which is not active /dev/sdc: is not an md array /dev/sdc: device 2 in 4 device undetected raid5 /dev/md1. Use mdadm --examine for more detail. /dev/sdd: is not an md array /dev/sdd: device 0 in 4 device undetected raid5 /dev/md1. Use mdadm --examine for more detail. /dev/sdf: is not an md array /dev/sdf: device 1 in 4 device undetected raid5 /dev/md1. Use mdadm --examine for more detail. The results of mdstat --examine /dev/sdc /dev/sdd /dev/sdf are: /dev/sdc: Magic : a92b4efc Version : 00.91.00 UUID : 50e20ea1:18efd436:86ef0f3e:0c0af959 Creation Time : Tue Dec 11 13:03:23 2007 Raid Level : raid5 Used Dev Size : 488386304 (465.76 GiB 500.11 GB) Array Size : 1465158912 (1397.28 GiB 1500.32 GB) Raid Devices : 4 Total Devices : 3 Preferred Minor : 1 Reshape pos'n : 418942464 (399.53 GiB 429.00 GB) Delta Devices : 2 (2->4) Update Time : Thu Dec 13 16:00:27 2007 State : clean Active Devices : 3 Working Devices : 3 Failed Devices : 1 Spare Devices : 0 Checksum : 83cfc18e - correct Events : 0.91680 Layout : left-symmetric Chunk Size : 256K Number Major Minor RaidDevice State this 2 8 32 2 active sync /dev/sdc 0 0 8 48 0 active sync /dev/sdd 1 1 8 80 1 active sync /dev/sdf 2 2 8 32 2 active sync /dev/sdc 3 3 0 0 3 faulty removed /dev/sdd: Magic : a92b4efc Version : 00.91.00 UUID : 50e20ea1:18efd436:86ef0f3e:0c0af959 Creation Time : Tue Dec 11 13:03:23 2007 Raid Level : raid5 Used Dev Size : 488386304 (465.76 GiB 500.11 GB) Array Size : 1465158912 (1397.28 GiB 1500.32 GB) Raid Devices : 4 Total Devices : 3 Preferred Minor : 1 Reshape pos'n : 418942464 (399.53 GiB 429.00 GB) Delta Devices : 2 (2->4) Update Time : Thu Dec 13 16:44:49 2007 State : clean Active Devices : 2 Working Devices : 2 Failed Devices : 2 Spare Devices : 0 Checksum : 83cfcc23 - correct Events : 0.91692 Layout : left-symmetric Chunk Size : 256K Number Major Minor RaidDevice State this 0 8 48 0 active sync /dev/sdd 0 0 8 48 0 active sync /dev/sdd 1 1 8 80 1 active sync /dev/sdf 2 2 0 0 2 faulty removed 3 3 0 0 3 faulty removed /dev/sdf: Magic : a92b4efc Version : 00.91.00 UUID : 50e20ea1:18efd436:86ef0f3e:0c0af959 Creation Time : Tue Dec 11 13:03:23 2007 Raid Level : raid5 Used Dev Size : 488386304 (465.76 GiB 500.11 GB) Array Size : 1465158912 (1397.28 GiB 1500.32 GB) Raid Devices : 4 Total Devices : 3 Preferred Minor : 1 Reshape pos'n : 418942464 (399.53 GiB 429.00 GB) Delta Devices : 2 (2->4) Update Time : Thu Dec 13 16:44:49 2007 State : clean Active Devices : 2 Working Devices : 2 Failed Devices : 2 Spare Devices : 0 Checksum : 83cfcc45 - correct Events : 0.91692 Layout : left-symmetric Chunk Size : 256K Number Major Minor RaidDevice State this 1 8 80 1 active sync /dev/sdf 0 0 8 48 0 active sync /dev/sdd 1 1 8 80 1 active sync /dev/sdf 2 2 0 0 2 faulty removed 3 3 0 0 3 faulty removed -- View this message in context: http://www.nabble.com/Please-Help%21%21%21-Raid-5-reshape-failed%21-tp14339886p14339886.html Sent from the linux-raid mailing list archive at Nabble.com. - 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
