Re: Why do I get different results for 'mdadm --detail' & 'mdadm --examine' for the same array?

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repeating the process on another box, i just noticed that these two
results' UUIDs match exactly,

 /dev/.mdadm/map       /dev/md/0_0  52f5b43c:e83f7e2a:be6ad32e:0536ab0e 
 mdadm --detail --scan /dev/md/0_0  52f5b43c:e83f7e2a:be6ad32e:0536ab0e

but the OTHER array's two UUIDs

 /dev/.mdadm/map       /dev/md127   79fb7ad4:289bfae5:86c535ff:202960f2 
 mdadm --detail --scan /dev/md127   d47afb79:e5fa9b28:ff35c586:f2602920

are 'transforms' of one another; e.g.,

 mdadm --detail --scan /dev/md127   d47afb79:e5fa9b28:ff35c586:f2602920
 
                                    d4       e5  
                                      7a       fa 
                                        fb       9b
                                          79:      28:...

                                        |
                                        |  couplet order transform
                                        |

                                          d4       e5
                                        7a       fa
                                      fb       9b
                                    79:      28:      ...

 /dev/.mdadm/map       /dev/md127   79fb7ad4:289bfae5:86c535ff:202960f2 

what's happening here?  that can't be a coincidence.

is this a bug?  or maybe an artifact of the type of array?

jeff
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