mdadm striped parity RAID with Advanced Format drives

On 7/21/2011 3:11 AM, Pol Hallen wrote:

Hello and sorry if I write you in private..

No worries.  I'm taking this back on list as others have more experience
with this than me.

about 2Tb wd and 4Kb size, is there a howto to check and correct the size of 
these disks?

Can you tell me how?

	Model Number:       WDC WD20EARS-00MVWB0                    

1. Can one create a RAID5 from bare (partition-less) AF drives and avoid
the read-modify-write problem?

2. Or is one required to assemble the array from properly aligned
partitions created on each drive?

Pol, *IF* the answer to #1 is yes, creating the array properly becomes
easier.  Simply create the array with raw device names and no partition
numbers, for example, sd[a,b,c,d,e,f].  If you've already created
partitions on the drives, wipe everything off all drives, including the
partitions tables.

If the answer to #1 is 'no', and to #2 is 'yes', then you need to follow
the instructions posted by Erwan Leroux.

-- 
Stan