On 03/15/2016 10:36 PM, Martin K. Petersen wrote: >>>>>> "Hannes" == Hannes Reinecke <hare@xxxxxxx> writes: > >>> I wonder how many non-compliant devices we would have to blacklist as >>> a result of this change... > > Hannes> But it feels even sillier having to whitelist every > Hannes> standards-conformant device here; I certainly was when I figured > Hannes> that EMC Clariion won't work properly without this patch. > > Hannes> And the idea was to mark off _misbehaving_ drives, not the other > Hannes> way round. > > I understand. But my concern is that the number of broken USB doodad > model strings far outnumber enterprise storage vendor ditto. And there > is no point in reversing the polarity if it increases the maintenance > burden. > > So I would be more comfortable with just widening the VPD whitelist and > assume that everything with an EMC, Dell, NetApp, whatever vendor ID is > compliant. > Well, yes, that's the bugger. You never know until you try. But we have been asking for VPD pages per default for quite some time now from userspace (thanks to udev), and so far have had only a few bug reports for misbehaving devices. And again, it just feels wrong to punish every well-behaved device out there, for the sake of some buggy USB implementation of a few bucks worth. Cheers, Hannes -- Dr. Hannes Reinecke zSeries & Storage hare@xxxxxxxx +49 911 74053 688 SUSE LINUX GmbH, Maxfeldstr. 5, 90409 Nürnberg GF: F. Imendörffer, J. Smithard, J. Guild, D. Upmanyu, G. Norton HRB 21284 (AG Nürnberg) -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
