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

From	Tim Woodall <debianuser@woodall.me.uk>
Newsgroups	linux.debian.user
Subject	Re: New mdadm RAID1 gets renamed from md3 to md127 after each reboot
Date	2021-10-02 07:40 +0200
Message-ID	<D3FUB-6sB-1@gated-at.bofh.it> (permalink)
References	<D3mRX-3hh-7@gated-at.bofh.it> <D3ryh-67d-1@gated-at.bofh.it> <D3sNK-6Nj-39@gated-at.bofh.it> <D3z2N-2c0-3@gated-at.bofh.it> <D3ABz-2Xh-3@gated-at.bofh.it>
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On Fri, 1 Oct 2021, Joe Pfeiffer wrote:

> Tim Woodall <debianuser@woodall.me.uk> writes:
>
>> On Fri, 1 Oct 2021, Reiner Buehl wrote:
>>
>>> On 01.10.2021 16:11, Felix Miata wrote:
>>>> Mine (old) is like so:
>>>> # head -n3 /etc/mdadm.conf
>>>> HOMEHOST <ignore>
>>>> DEVICE containers partitions
>>>> ARRAY /dev/md0 metadata=1.0 name=msi85:0tmp UUID=...
>>> I tried changing the HOMEHOST from <system> to <ignore> but that did
>>> not help.
>>>
>>>
>>
>> I've solved this but I don't recall how.
>
> Same here... FWIW my /etc/mdadm/mdadm.conf contains the line
> ARRAY /dev/md/1  metadata=1.2 UUID=67d3c233:96a0737c:5f88ed9b:936ea3ae name=snowball:1
>
> and my array is indeed /dev/md1 (I've got *no* recollection why I didn't
> make it md0!).
>
> Is it possible you need to update your init ramdisk?  Maybe your changes
> to your mdadm.conf aren't being seen?
>
Don't think it's anything to do with the config file:


root@debootstrap17:~# mdadm --examine --scan
ARRAY /dev/md/debootstrap17  metadata=1.2 UUID=5e7d0dca:9f579eef:afb81eec:b0060281 name=debootstrap17
ARRAY /dev/md/5  metadata=1.2 UUID=1cdac5e5:c9fcac40:5e738a68:0a650b23 name=test:5
ARRAY /dev/md/test5  metadata=1.2 UUID=46ced7db:4b422364:1938cce3:6561f99d name=test5

That's with no arrays defined in the config file.

After these commands:

dd if=/dev/zero of=mdadm.blk bs=1M count=50
losetup -f mdadm.blk
mdadm --create /dev/md/test:5 --metadata=1.2 --bitmap=internal --force --level=1 --raid-devices=1 /dev/loop0
mdadm --stop /dev/md/test\:5
dd if=/dev/zero of=mdadm2.blk bs=1M count=50
losetup -f mdadm2.blk
mdadm --create /dev/md/test5 --metadata=1.2 --bitmap=internal --force --level=1 --raid-devices=1 /dev/loop1
mdadm --stop /dev/md/test5
mdadm --examine --scan

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Thread

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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