RAID60 question

[Greg]

Hi there,

I'm setting up MD-RAID0 on a top of HW-RAID6 devices (long story). I 
would like to confirm the following:

1. The RAID0 chunk size should be the stripe width of the
underlying RAID6 volumes.

2. The RAID0 metadata should be at the end of the device (metadata ver. 
1.0).

3. The stride and stripe-width of the ext4 fs should be set to the once 
used when creating RAID6 volumes.

Thanks in advance for any help
Greg