TCQ depth -- manual override?

[Karl-Heinz Herrmann]

Hi,


I have an adatec 2940UW with an aasortment of older SCSI drives. One of
these drives always made trouble with TCQ enabled and I had an override
like:

append="aic7xxx=ultra,tag_info:{{0,1,0,0,16,0,1,0}}"

in lilo.conf. That was with kernel 2.2 -- now I'm running a 2.4.21
(SuSE) and it's ignoring the tag setting. 

something like this doesn't help either. 

aic7xxx=verbose,global_tag_depth:1,tag_info:{{1,1,1,1,1,1,1,1}{1,1,1,1,
1,1,1}}

I wouldn't mind if the system would run stable -- but I've frequent lock
ups with no output whatsoever and a SCSI acces LED on. Always on heavy
SCSI I/O. I did rearrange the drives at the same time the kernel change
happened, so there might be another reason for the locks, but as I had
something similar and restricting TCQ like above helped that's the first
thing I would like to try.


Any hints on the new syntax? 


K.-H.