Hello Neil,

NeilBrown wrote:

Linux RAID10 with

     Raid Level : raid10
   Raid Devices : 4
         Layout : near=2, far=1

Will layout data like this:

   disk0   disk1   disk2   disk3
     A       A       B       B
     C       C       D       D
     E       E       F       F

You have removed disk0 and disk1, so A,C,E don't exist
any more.  You should get IO errors when you try to access
that data.
  

Sorry, but I removed loop0 and loop2 so that would be disk0 and disk2 - 
so ACE as well as BDF should still exist and recover. Could you explain 
this, I am I just getting you wrong?

There is nothing that can be recovered, so the drives remain
as spares.

NeilBrown
  

regards,
Patrick