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Re: New mdadm RAID1 gets renamed from md3 to md127 after each reboot

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Reiner Buehl writes:

> I created a new mdadm RAID 1 as /dev/md3. But after each reboot, it gets  
> activated as md127. How can I fix this - preferably without haveing to delete  
> the whole array again...
> The array is defined like this in /etc/mdadm:
>
> ARRAY /dev/md3 metadata=1.2  level=raid1 num-devices=1 UUID=41e0a87f: 
> 22a2205f:0187c73d:d8ffefea

[...]

I have observed this in the past, too and do not know how to "fix" it.

Why is it necessary for the volume to appear under /dev/md3? Might it be  
possible to use its UUID instead, i.e. check the output of

	ls -l /dev/disk/by-uuid

to find out if your md3/md127 can be accessed by an unique ID. You could  
then point the entries in /etc/fstab to the UUID rather than the "unstable"  
device name?

HTH and YMMV
Linux-Fan

öö

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New mdadm RAID1 gets renamed from md3 to md127 after each reboot Reiner Buehl <reiner.buehl@gmail.com> - 2021-10-01 11:20 +0200
  Re: New mdadm RAID1 gets renamed from md3 to md127 after each          reboot Linux-Fan <Ma_Sys.ma@web.de> - 2021-10-01 16:00 +0200
    Re: New mdadm RAID1 gets renamed from md3 to md127 after each reboot Reiner Buehl <reiner.buehl@gmail.com> - 2021-10-01 17:40 +0200
  Re: New mdadm RAID1 gets renamed from md3 to md127 after each reboot Felix Miata <mrmazda@earthlink.net> - 2021-10-01 16:20 +0200
    Re: New mdadm RAID1 gets renamed from md3 to md127 after each reboot Reiner Buehl <reiner.buehl@gmail.com> - 2021-10-01 17:40 +0200
      Re: New mdadm RAID1 gets renamed from md3 to md127 after each  reboot Tim Woodall <debianuser@woodall.me.uk> - 2021-10-02 00:20 +0200
        Re: New mdadm RAID1 gets renamed from md3 to md127 after each  reboot Joe Pfeiffer <pfeiffer@cs.nmsu.edu> - 2021-10-02 02:00 +0200
          Re: New mdadm RAID1 gets renamed from md3 to md127 after each reboot Reiner Buehl <reiner.buehl@gmail.com> - 2021-10-02 05:10 +0200
            Re: New mdadm RAID1 gets renamed from md3 to md127 after each reboot Joe Pfeiffer <pfeiffer@cs.nmsu.edu> - 2021-10-04 04:10 +0200
              Re: New mdadm RAID1 gets renamed from md3 to md127 after each reboot Reiner Buehl <reiner.buehl@gmail.com> - 2021-10-04 08:40 +0200
          Re: New mdadm RAID1 gets renamed from md3 to md127 after each  reboot Tim Woodall <debianuser@woodall.me.uk> - 2021-10-02 07:40 +0200

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