A quick follow up on this email ... please note that I have not, in this
email, pointed to anything but the iir(4) driver, and, more specifically,
the GDT controller card ...
I have been using Adaptec products since the early 90's, and, until
upgrading to FreeBSD 6.x, *never* had a complaint with them ... this email
was meant to be a 'caveat emptor' for anyone looking to use the iir(4)
driver, and is not meant to apply to *all* Adaptec cards, as they don't
all use the iir(4) driver ...
Apologies to all who took this as a broad attack against Adaptec, it was
not meant as such ...
On Mon, 31 Jul 2006, User Freebsd wrote:
'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 . [EMAIL PROTECTED] MSN . [EMAIL PROTECTED]
Yahoo . yscrappy Skype: hub.org ICQ . 7615664
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----
Marc G. Fournier Hub.Org Networking Services (http://www.hub.org)
Email . [EMAIL PROTECTED] MSN . [EMAIL PROTECTED]
Yahoo . yscrappy Skype: hub.org ICQ . 7615664
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