Re: raid6 array , part id 'fd' not assembling at boot .

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On Friday March 16, babydr@xxxxxxxxxxxxxxxx wrote:
>  	Hello All ,  I am having a dickens of a time with preparing this system 
> to replace my present one .
>  	I created a raid6 array over 6 147GB scsi drives .
>  	steps I followed were .
> 
>  	fdisk /dev/sd[c-h] ( one at a time of course )
>  	  created a partition starting at cyl 2 & -10 Cyls from the end of the drive .
>  	  typed the partion FD
>  	  w
>  	repeat until all six drives partitioned .
> 
>  	mdadm --create /dev/md3 --chunk=64 --metadata=1.2 --verbose --bitmap=internal --level=6 --raid-devices=6 --spare-devices=0 /dev/sd[cdefgh]1
>  	Built just fine .

In-kernel auto-assembly using partition type 0xFD only works for
metadata=0.90.  This is deliberate.

Don't use 0xFD partitions.  Use mdadm to assemble your array, either
via an initrd or (if it don't hold the root filesystem) via an init.d
script.

NeilBrown
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