detection of LUNs

[John O'Loughlin]

Thanks Michael

I have already tried that and it still can't see them, or rather it can
see LUN 0 but not LUN 1. Its a box i have inherited at a new job and the
riad array has been sitting around waiting for someone to hook it up. 
The strange thing is with the raid partition it can see, /dev/sda CH 0 ID
0 LUN 0, when i try to create a new partion on it using fdisk i'm told
that there are not enough sectors whenever I ask for a new primary
partition, even though sda only has one one partition on it of size 930
MB and the sda is 1.2 TB (so the whole thing is 2.4TB). The partition
/dev/sda1 also has id 42, and I've no idea what partition type that is.
To be honest I'm at a bit of a loss.

John



On Sat 21 May 2005 at 09:29, Michael Kearey (mkearey at redhat.com) wrote:
> On Fri, 2005-05-20 at 16:34 +0100, John O'Loughlin wrote:
> > Will RHEL3 automatically detect multiple LUNS on a scsi device or do I
> > need to tweak something?
> > 
> > Cheers
> > john
> > 
> 
> Hi John.
> You can add to your /etc/modules.conf:
> 
>  options scsi_mod max_scsi_luns=n
> 
> Where 'n' is the maximum number you want the kernel to probe for.
> 
> Then rebuild the initrd for the kernel.
> A simple way to rebuild the initrd:
> 
> new-kernel-pkg --mkinitrd --depmod --install `uname -r`
> 
> This will create a new initrd for the currently running kernel BTW.
> 
> You can find a little more detail about why this is necessary by
> visiting the Red Hat Knowledge Base  https://kbase.redhat.com and do a
> search on 'SCSI LUNS'
> 
> Cheers,
> Michael
> 
> 
> 
> 
> 
> 
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