On Wed, 2 Jun 2010 20:53:28 -0400
Andrew Dunn [off-list ref] wrote:

I have never noticed this, my apologies for not being able to resolve
this independently.

I have this array that I am using for the primary bulk of my data and
today was the first day that I noticed this designator in the detailed
output:

storrgie@MINERVA:~$ sudo mdadm -D /dev/md2
/dev/md2:
        Version : 00.90
  Creation Time : Fri Apr 30 21:13:28 2010
     Raid Level : raid6
     Array Size : 11721071616 (11178.09 GiB 12002.38 GB)
  Used Dev Size : 1953511936 (1863.01 GiB 2000.40 GB)
   Raid Devices : 8
  Total Devices : 8
Preferred Minor : 2
    Persistence : Superblock is persistent

snip

What is the meaning of Preferred Minor : 2 ?

It means that if the array is auto-assembled, whether by the kernel with
auto-detect or by mdadm with --incremental or '-As', it will be assembled
as /dev/md2 - i.e. the device file will have a major number of 9 (meaning
an md raid array) and the minor number will be 2.

NeilBrown

Thank you all.
--
To unsubscribe from this list: send the line "unsubscribe linux-raid" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html