Re: delay in disc detection causes boot failure

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2009/3/30 AlesD <ales_d@xxxxxxxxx>:
> Hello,
>
>  I have installed HP-PA port of Debian 5.0 and got into following problem.
>
> The root filesystem is on SW RAID. At the end of kernel initialization comes
> reset on SCSI bus. After this reset it takes about 6 seconds before the
> attached SCSI disks become "visible" and are detected by kernel. The
> initialization process however goes on and during this 6s it tries to
> assemble the MD device. Since the discs do not exist yet the assembly fails
> and root filesystem is not found. The init script waits 3 minutes before
> giving up - which would normaly do the trick if the root was directly in one
> partition. With RAID (and LVM a top of it) the init ends with fiasco.
>
> To overcome this I put simple "sleep 30" in the initram scripts - just
> before assembly of the MD device. I understand that this issue is more for
> Debian, but before reporting ther I'd like to ask here:
> 1) does anyone here know, why there is the reset/delay during boot, and
> 2) and if message "Driver 'sd' needs updating - please use bus_type methods"
> might have anything to do with this problem.

I've experienced similar problem with root on raid and Debian kernels.
It's definitely a Debian specific issue, afaict.

HTH

-- 
Thibaut VARENE
http://www.parisc-linux.org/~varenet/
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