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[OT] Re: Choosing the right kernel for XFS

To: Greg Freemyer <freemyer@xxxxxxxxxxxxxxxxx>
Subject: [OT] Re: Choosing the right kernel for XFS
From: Walt H <waltabbyh@xxxxxxxxxxxxxx>
Date: Sat, 07 Dec 2002 09:55:25 -0800
Cc: Karl Ran <karlran@xxxxxxxxxxx>, austin@xxxxxxxxxxxxxxx, linux-xfs@xxxxxxxxxxx
In-reply-to: <20021121171708.CVEG17441.imf11bis.bellsouth.net@TAZ2>
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I know this is a late reply and is somewhat off topic for the list, however, just wanted to chime in for completeness re: the opensource Promise drivers.

Yes, there are some "partially opensource drivers". They are packaged very similar to the Nvidia drivers. There is a binary only portion that you compile a wrapper around so it will work within your kernel version/config. I've found performance to be rather good, however, I can't vouch for stability yet. Also, at least in my case, getting them installed was quite a bear. You really need the combined documentation from one of their full installs targeted at Redhat or Suse as well as the small readme file that is part of the archive. Following their instructions to the letter, I was still left with many undefined symbols in the module, regardless of whether I compiled with or without dependencies. At any rate, once you get the module actually compiled and loadable at boot time, they work rather nicely and in my case using two 7200 RPM IDE drives as a raid0 array, offer better performance than the md software raid in linux.


Greg Freemyer wrote:
 >>  Sounds too good to be true!

 >>  Anybody knows where I can find 'the promise patch' for 2.4.18?

 >>  Karl

Try http://www.promise.com/support/support_eng.asp

FYI: Traditionally the promise patches have been binary only.

They are built to apply to specific kernels.  I don't know if they support a 
vanilla kernels or not.

On another mailing list I read "Finally 2 days ago promise released a opensource module for Fasttrak100 raid controller."

Maybe that means that promise is finally seeing the light.

Greg Freemyer
Internet Engineer
Deployment and Integration Specialist
Compaq ASE - Tru64 v4, v5
Compaq Master ASE - SAN Architect
The Norcross Group

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