scsi selection timeout

From: Jim Wright <jwright_at_phy.ucsf.edu>
Date: Thu, 1 Jun 1995 14:08:07 -0700 (PDT)

I've got a CD recorder (CD Studio from Young Minds) which presents
itself as an Exabyte 8200 on the SCSI bus. One way to perform the
step of actually cutting a CD-ROM is to issue the "mt fsf" command
for the device. However, when I do this I get a target selection
timeout. Looking in uerf output, I can see the timeout, followed
four seconds later by another entry:

    ROUTINE NAME ctape_orphan_done
    ERROR TYPE Possible Software Problem - Impossible Cond Detected
    DEVICE NAME EXABYTE EXB-8200
                        Active CCB at time of error
                        Target selection timeout

I understand that it is possible to muck with the 3.0 kernel to get
around this:

    % dbx -k /vmunix /dev/mem
> patch sim94_sel_to = 90

However, Young Minds can't offer me any help with OSF/1 2.0, which
is where I'm temporarily stuck. (Gonna upgrade -- RSN. :) So in
the meantime, is there any hope of being able to get 2.0 to back
down on how quickly it determines a timeout?

Thanks,

Jim Wright Keck Center for Integrative Neuroscience
jwright_at_phy.ucsf.edu Department of Physiology, Box 0444
voice 415-502-4874 513 Parnassus Ave, Room HSE-811
fax 415-502-4848 UCSF, San Francisco, CA 94143-0444
Received on Thu Jun 01 1995 - 23:49:23 NZST

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