Trying to reshape my RAID 1 to a RAID 5
The first step is to modify the Raid 1 into a 2 disk Raid 5, and this fails:
I also tried that with a 4k chunk. Made no difference, same error.
dmesg (kernel log) output:
mdadm status output:
Code
# mdadm --detail /dev/md0
/dev/md0:
Version : 1.2
Creation Time : Thu Jul 26 16:40:22 2012
Raid Level : raid1
Array Size : 1952699558 (1862.24 GiB 1999.56 GB)
Used Dev Size : 1952699558 (1862.24 GiB 1999.56 GB)
Raid Devices : 2
Total Devices : 2
Persistence : Superblock is persistent
Update Time : Thu Jan 3 16:58:20 2013
State : clean
Active Devices : 2
Working Devices : 2
Failed Devices : 0
Spare Devices : 0
Name : omv:0 (local to host omv)
UUID : 43a4d2dc:ac3254c9:f13567e5:a2d627e1
Events : 18454
Number Major Minor RaidDevice State
0 8 49 0 active sync /dev/sdd1
2 8 17 1 active sync /dev/sdb1
Alles anzeigen
Can anyone shed any light on this?
If the worst comes to the worst, I'll have to degrade the RAID-1 fail out one device, add in another, and make a new 2 disk raid-5 out of the two, copy all the data on and destroy the remaining RAID-1, followed by adding in the third disk to the RAID-5.
I'd much much rather get this reshape to work, but the commands aren't telling me much about /why/ they're failing, only that they are.
Appreciate any help, thanks