Hi, I have a 4 disk RAID5, the used dev size is 640.05 GB. Now I want to replace the 4 disks by 4 disks with a size of 2TB each. As far as I understand the man page, this can be achieved by replacing the devices one after another and for each device rebuild the degraded array with: mdadm /dev/md0 --add /dev/sdX1 Then the level change can be done together with growing the array: mdadm --grow /dev/md0 --level=raid6 --backup-file=/root/backup-md0 Does this work? I am asking if it works, because the man page also says: > mdadm --grow /dev/md4 --level=6 --backup-file=/root/backup-md4 > The array /dev/md4 which is currently a RAID5 array will > be converted to RAID6. There should normally already be > a spare drive attached to the array as a RAID6 needs one > more drive than a matching RAID5. And in my case only the size of disks is increased, not their number. Thanks, Lars -- 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
