no luck with Adaptec SCSI controller in 2.4.X

David A. Gatwood dgatwood at
Sat Oct 13 04:29:01 EST 2001

On Friday, October 12, 2001, at 11:13 AM, Kevin B. Hendricks wrote:

>>>> Perhaps the drive
>>>> will function correctly if tagged queing is disabled for it.  You
>>>> can do this only for target 1 with the "tag_info" option.  There may
>>>> also be firmware updates for this drive.
> Okay I used tag_info as you directed and set the Quantum Fireball drive
> to
> use a maximum tag depth of 8 (like the old driver used) and everything
> seems to work fine.
> So can you point me to where in your driver code the depth of the tagged
> queueing is dynamically determined?  I would like to play around a bit
> with the driver code to see if I can tell if the Quantum Fireball is
> simply spitting back bogus info or and if so what?

IIRC, early Fireball models reported support for TCQ and didn't even
support it.  This from discussions on the NetBSD forums a few years
back.  I wouldn't be surprised if the drive were reporting wrong
info....  From what I gather, Quantum's high end drives were pretty
decent, but I have a stack of dead Fireballs to prove that their low end
drives weren't....  :-|


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