[Web10g-user] O/S and kernel/patch versions

[Aaron Brown]

Hey Kevin,

There's actually interest in supporting web10g on RHEL6. I've got an SRPM for an older RH6 kernel version, along with an SRPM for the 2.0.4 version of the web10g userland. There's been an updated web10g patch, but I'm not sure it's been backported to the RH6 kernel.

If you'd be interested in testing it out, I can get you the existing kernel SRPM, and see whether the patch still applies to the newer RH6 kernel.

Cheers,
Aaron

On Apr 29, 2013, at 9:39 PM, Tom Throckmorton <throck at gmail.com> wrote:

> Hello Kevin; cross-posting to perfsonar developers, and comments below...
> 
> On Mon, Apr 29, 2013 at 6:46 PM, Kevin Kawaguchi <ktkawaguchi at ucdavis.edu> wrote:
> Good Afternoon Everybody,
> 
> We are about to build a web10g server for some researchers.  We are typically a RHEL/CentOS shop so kernel wise we would be behind the times on recent web10g patches.  As an example PerfSonar is based on CentOS and has a kernel version of something like 2.6.32-358 while the web10g patches are way into the 3.x (and the oldest web10g patch is 2.6.38).
> 
> It looks like the best fit for a distro would be Fedora 18 as it is still RH and uses the 3.6 kernel train based upon this wiki:
> http://en.wikipedia.org/wiki/List_of_Fedora_versions#Version_history
> 
> 
> FWIW, Fedora 17/18 are currently shipping 3.8; the 0.6.2 patch is for 3.6.0-3.8.0, so should still work with either of those.
>  
> We are proposing:
> 1. install FC 18
> 2. d/l base kernel.org 3.6.0-ish source
> 3. d/l web10g 0.6.2 or newer patch
> 4. figure out where patch applies in kernel.org source
> 5. d/l fedora 3.6.0-ish kernel source
> 6. modify web10g 0.6.2 patch into fedora source
> 7. compile new fedora source based patched kernel and cross fingers
> 
> You can probably omit step #2 (unless you are really into reading kernel source); the comparison that is most important is the web10g patch to the kernel source for your compilation target.
> 
> 
> I know documentation says that a raw ".0" kernel.org source is the supported method and that using other sources *may* work, but we are thinking it may pay off to use distro source to keep things in line with what is expected and configured in the distro.  On this path, are there any recommendations or experiences that would give this the best chance to pay off with a reasonably reliable system for our researchers?
> 
> Have other folks done anything like this successfully?
> 
> I've done this with web100, as well as mixing distro + upstream distro kernel, but have not w/ the web10g patchset.  Regardless of the patch, starting with and patching a kernel source and version that matched the distro was the best combination for me, in terms of things working and overall stability, whether using Fedora or CentOS.
> 
> You have a few other things to consider, like how you're going to maintain updates.  I encourage you to look at mock* for rebuilding your kernel package; the up-front investment will pay off if you're intending to use these systems for a while, and you'll also get to uncross your fingers at step #7 ;-)
> 
> -tt
> 
> * http://fedoraproject.org/wiki/Projects/Mock 
> 
> 
> What are the plans with respect to working with the PerfSonar/NDT/NPAD folks especially since they are Cent based?  I understand a patch for 2.6.32-358 would seem like a step backwards.
> 
> Thank You!
> 
> Kevin Kawaguchi
> UCDavis Network Operations Center
> 
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