Re: [PATCH 2/5] scsi_scan: Restrict sequential scan to 256 LUNs

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On Tue, Dec 10, 2013 at 12:05:12PM +0100, Hannes Reinecke wrote:
> Sequential scan for more than 256 LUNs is very fragile as
> LUNs might not be numbered sequentially after that point.
> 
> SAM revisions later than SCSI-3 impose a structure on
> LUNs larger than 256, making LUN numbers between 256
> and 16384 illegal.
> SCSI-3, however allows for plain 64-bit numbers with
> no internal structure.
> 
> So restrict sequential LUN scan to 256 LUNs and add a
> new blacklist flag 'BLIST_SCSI3LUN' to scan up to
> max_lun devices.

What do you need the blacklist flag for?  There's no user of it, and
supporting that many LUNs without REPORT LUNS support doesn't sound very
practical anyway.
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