Re: new array not starting

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Robin Bowes wrote:
> Robin Bowes wrote:
>> This worked:
>>
>> # mdadm --assemble --auto=yes  /dev/md2 /dev/sdc /dev/sdd /dev/sde
>> /dev/sdf /dev/sdg /dev/sdh /dev/sdi /dev/sdj
>> mdadm: /dev/md2 has been started with 8 drives.
>>
>> However, I'm not sure why it didn't start automatically at boot. Do I
>> need to put it in /etc/mdadm.conf for it to star automatically? I
>> thought md start all arrays it found at a start up?
> 
> OK, I put /dev/md2 in /etc/mdadm.conf and it didn't make any difference.
> 
> This is mdadm.conf (uuids are on same line as ARRAY):
> 
> DEVICE partitions
> ARRAY /dev/md1 level=raid1 num-devices=2
> uuid=300c1309:53d26470:64ac883f:2e3de671
> ARRAY /dev/md0 level=raid1 num-devices=2
> uuid=89649359:d89365a6:0192407d:e0e399a3
> ARRAY /dev/md2 level=raid6 num-devices=8
> UUID=68c2ea69:a30c3cb0:9af9f0b8:1300276b
> 
> I saw an error fly by as the server was booting saying "/dev/md2 not found".
> 
> Do I need to create this device manually?

Well, at the risk of having a complete conversation with myself, I've
created partitions of type "fd" on each disk and re-created the array
out of the partitions instead of the whole disk.

mdadm --create /dev/md2 --auto=yes --raid-devices=8 --level=6 /dev/sdc1
/dev/sdd1 /dev/sde1 /dev/sdf1 /dev/sdg1 /dev/sdh1 /dev/sdi1 /dev/sdj1

I'm hoping this will enable the array to be auto-detected and started at
boot.

R.

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