On 09/23/2013 12:39 PM, Ian Pilcher wrote:

On 09/23/2013 11:36 AM, Benjamin ESTRABAUD wrote:

quoted

Are you referring to the particular mention"Any device with "n" or
higher are spare disks. 0,1,..,n-1 are for the working array." in the
Mdstat wiki page?

I was really thinking of the sentence before that, which states:

  The raid role numbers [#] following each device indicate its role, or
  function, within the raid set.

The wiki is wrong.  The number in brackets is the device's index into
the *table* of roles in the superblock.  In a new array, table entries
are allocated sequentially, which makes it *look* like the role numbers.

Phil