Re: Force raid5 assemble at boot kernel

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On Monday October 18, htrafmb@xxxxxxxx wrote:
> Hi all,
>   i've got a / over a failed raid5. i mean, three
> disks: one broken (a), one good (b), one failed (c).
> the last one was kicked out of the array because a
> read error. anyway, no trouble because i've got backup
> and so on. Well, if I boot from another disk and force
> assembly it restarts, but I would like to know if I
> can force the assembly of md0 for device (b) and (c)
> from kernel command line (grub/lilo).

No, you cannot.  In this situation the kernel simply will not trust
the data.  You need mdadm to modify the superblocks before it will
assemble it. 

NeilBrown



> 
> Thanks a lot for your time and your work,
> andrea (a happy software raid user)
> 
> 
> 		
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