Re: Patches for SCSI scanning

[Kurt Garloff <garloff@suse.de>]

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Hi Patrick,

On Tue, Apr 20, 2004 at 09:26:51AM -0700, Patrick Mansfield wrote:
> On Tue, Apr 20, 2004 at 09:38:00AM -0500, James Bottomley wrote:
> > Yes, sounds reasonable.  We can do it all with the boot flags now.
> 
> max_scsi_luns should default to zero to avoid devices that should be black
> listed as single lun.

I strongly disagree.

The target should be to blacklist broken devices not working ones. 

Devices that have multiple LUNs are not, devices that have only one but
report severals are.

With max_scsi_luns=1, we would need to "black"list every single multi lun
device. I very much dislike that idea.

Fortunately, distributors don't do this.

> So how can you remove those and maintain compatibilty? The removal should
> wait for 2.7.

Expecting your multi lun devices to work with max_scsi_luns=1 is just
wrong. max_scsi_luns should not default to 1.
Anyways, BLIST_SPARSELUN will have the side-effect of also working
around that misconfiguration.

Regards,
-- 
Kurt Garloff  <garloff@suse.de>                            Cologne, DE 
SUSE LINUX AG, Nuernberg, DE                          SUSE Labs (Head)

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