Hi Neil,

On Thursday April 3, kisselev@mail.desy.de wrote:

quoted

  Here is the question: is there an easy way to change RAID device ID?
If not, is the following sequence correct in my case (1-disk RAID linear):

  - stop device;
  - 'dd' 4k RAID superblock from /dev/sda2 at offset 292021440;
  - change 4-byte field at offset 11 (md_minor) to the desired number
    (say '5' for md5);
  - copy superblock back;
  - reboot;

Sort of, but it is much easier to get mdadm to do this.
Get mdadm 1.2.0 and check out
   --assemble --update=super-minor

in the documentation.

  thank you, worked fine.

  Cheers,
    Alexander.