On 01/03/2014 04:30 AM, Piotr Klimek wrote: > Hello, > I was trying to migrate from 5x3TB RAID5 to 6x3TB RAID6 with this command: > > $ mdadm --grow /dev/md1 --level=6 --raid-devices=6 -- > backup=/home/archiwum/r6.bak > > After couple of days reshape stalled on 2147483648 block. I have found that > this is a bug in mdadm. 2147483648 is max integer on 32 bit system. For now > situation looks like this: You'll certainly have to take production down long enough to let a newer kernel finish the reshape. Or you could be brave and replace the kernel and let production continue through the balance of the reshape. HTH, Phil -- 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