Hello, I have been running a 4 disk raid 5 array with mdadm just fine for the last couple of months. I went out and got 4 new drives (same model) and added them on a PCI controller. I was able to add the drives just fine. But now my problem is growing the array. The drives are 8 Seagate 1.5TB drives (ST31500341AS). All have been tested working. jaykae-serv:~# mdadm --detail /dev/md1 /dev/md1: Version : 1.2 Creation Time : Sun Apr 25 17:41:27 2010 Raid Level : raid5 Array Size : 4395402240 (4191.78 GiB 4500.89 GB) Used Dev Size : 1465134080 (1397.26 GiB 1500.30 GB) Raid Devices : 4 Total Devices : 8 Persistence : Superblock is persistent Update Time : Wed Apr 28 14:40:10 2010 State : clean Active Devices : 4 Working Devices : 8 Failed Devices : 0 Spare Devices : 4 Layout : left-symmetric Chunk Size : 1024K Name : jaykae-serv:1 (local to host jaykae-serv) UUID : 71e05a16:b7ef5a50:b2499057:0ff0f6e3 Events : 549 Number Major Minor RaidDevice State 0 8 97 0 active sync /dev/sdg1 1 8 113 1 active sync /dev/sdh1 2 8 129 2 active sync /dev/sdi1 4 8 145 3 active sync /dev/sdj1 5 8 17 - spare /dev/sdb1 6 8 33 - spare /dev/sdc1 7 8 49 - spare /dev/sdd1 8 8 81 - spare /dev/sdf1 My original intention was to turn it into a raid 6 array. jaykae-serv:~# mdadm --grow /dev/md1 --level=6 --raid-disk=8 mdadm level of /dev/md1 changed to raid6 mdadm: Need to backup 1501199875784021K of critical section.. mdadm: /dev/md1: Something wrong - reshape aborted mdadm: aborting level change I get the same error message with just growing it normally. jaykae-serv:~# mdadm --grow /dev/md1 --raid-disk=8 mdadm: Need to backup 4503599627348992K of critical section.. mdadm: /dev/md1: Something wrong - reshape aborted One thing I do have to mention is that I had sd[bcdf] in their own raid 5 array as those were my original drives, but because of some formatting issues I had to create a second raid 5 array and copy them over. I had originally partitioned the drives differently and I was getting an error that my other drives were too small. sd[bcdf] are all partitioned, but are unformatted. Any suggestions would be welcomed. Thanks, Jeremy -- 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
