*BSD News Article 71732


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From: j@uriah.heep.sax.de (J Wunsch)
Newsgroups: comp.unix.bsd.freebsd.misc
Subject: Re: DAT Hell
Date: 22 Jun 1996 12:13:12 GMT
Organization: Private BSD site, Dresden
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Robert Withrow <witr@rwwa.com> wrote:

> > bump the
> > 300000 to something that makes the operation safe for you.  Once you
> > found it, multiply it by 2, and use /usr/bin/send-pr to submit your
> > new value so we can integrate it into the driver.
> 
> But gee.  Isn't there some better way of doing this, like
> a system variable or something?  Otherwise, why isn't
> infinity a good value?  

Since it might jam your SCSI controller in case of some hardware
failure (or firmware bug of a SCSI device), leaving only a reboot as a
possible recovery strategy.

SCSI timeouts are similar tradeoffs like all other timeouts.  If you
make them too short, they might still be to short in case the resource
was actually still available, but slow to respond.  If you make it
large, it will hang your system for a long time.

-- 
cheers, J"org

joerg_wunsch@uriah.heep.sax.de -- http://www.sax.de/~joerg/ -- NIC: JW11-RIPE
Never trust an operating system you don't have sources for. ;-)