Re: [PATCH] scsi-misc-2.5 remove scsi_scan.c EVPD code

[Douglas Gilbert <dougg@torque.net>]

Andries.Brouwer@cwi.nl wrote:
>>Remove the scsi EVPD code.
> 
> 
> Good! That simplifies many things.

Good?? Just because there are millions of brain damaged
devices that can't implement rule 0 of a protocol,
Patrick removes one of the best features added to
the scsi subsystem in the 2.5 development series.

Patrick's patch is now in lk 2.5.69 .

So we are back to all the fun games of opening/
querying/closing likely looking device nodes in
the /dev space (and I speak from experience).
What a joy.

Surely there is a better way. Why not do the VPD=0x83
query on devices that claim to be SCSI-3 compliant
or better. The scsi mid level driver (and/or the
usb-storage + sbp2 LLDs) could have a sysfs parameter
such as "simple_scan". The filters discussion
showed more promise than this blunt approach.

I have contemplated putting the VPD=0x83 code in
lsscsi but it won't be pretty (e.g. requiring root
privilege, side effects including locking up
certain USB storage devices :-) ).

Doug Gilbert





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