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Re: [Xen-devel] QLogic Fibre Channel HBA Support

To: Brian Wolfe <brianw@xxxxxxxxxxxx>
Subject: Re: [Xen-devel] QLogic Fibre Channel HBA Support
From: Steve Traugott <stevegt@xxxxxxxxxxxxx>
Date: Mon, 5 Jul 2004 11:33:57 -0700
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Hi Brian,

On Mon, Jul 05, 2004 at 04:31:33AM +0000, Brian Wolfe wrote:
> As for stable enough to host, I'm using a 1.3 version from May or June
> (can't remember the version off the top of my head) to do virtual
> server hosting for my own machines and for several clients.
> Interestingly enough, because of the setup I moved to I'm getting
> better overall performance using 2 main NFS servers with 8-disk raid-5
> arrays than with individual machines using mirror sets!

When using NFS roots you haven't seen any hung clients?  I was getting a
lot of those, got rid of a lot of the hangs by using the /dev/urandom
workaround, but still got a few after that, attributed to a long-lived
Linux NFS client kernel bug.  See these threads:

    05 May 2004:  xenolinux /dev/random
    12 May 2004:  Xen hangs with NFS root under high loads

I'm sure 1.3 fixes the first, but what about the second?

Stephen G. Traugott  (KG6HDQ)
UNIX/Linux Infrastructure Architect, TerraLuna LLC
http://www.stevegt.com -- http://Infrastructures.Org 

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