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Date:      Mon, 31 Jul 2006 22:44:01 -0300 (ADT)
From:      User Freebsd <freebsd@hub.org>
To:        freebsd-stable@freebsd.org
Cc:        freebsd-questions@freebsd.org
Subject:   [IMPORTANT] Adaptec no longer supporting iir(4) driver ...
Message-ID:  <20060731220931.R27679@ganymede.hub.org>

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'k, I finally got ahold of someone @ adaptec, and the official word seems 
to be:

"FreeBSD 6 is not officially supported for the "GDT" based ICP RAID
  controllers. Nevertheless the inbox driver should work."

Great, well, the inbox driver doesn't work with FreeBSD 6.x, and support 
doesn't exist to get it fixed, mainly since, as most ppl here know, the 
specs are closed, so even a non-Adaptec person can't do much to fix the 
problem(s) ...

For those that haven't been following the discussion on this, the iir(4) 
driver in FreeBSD 6.x appears to have a deadlock issue under medium to 
heavy load, where the 'blocked' state just continues to rise until file 
accesses just no longer work ...

So, if you are running a server that is using the iir(4) device driver and 
are considering upgrading to FreeBSD 6.x and beyond, or are looking to 
build a new machine using a device that relies on this driver, do so at 
your own peril ...

Please note that this deadlock issue exists on *both* the ICP Vortex 
cards, *and* the Intel based RAID controllers ...

If anyone from Adaptec is out there and is actually interested in seeing 
this problem fixed, *please* let me know ... I have three servers, all 
three exhibiting this problem, and one of them is fully loaded with the 
kernel debug stuff so that I can (I think) give you almost *anything* you 
want in the way of information concerning the problem ...


----
Marc G. Fournier           Hub.Org Networking Services (http://www.hub.org)
Email . scrappy@hub.org                              MSN . scrappy@hub.org
Yahoo . yscrappy               Skype: hub.org        ICQ . 7615664



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