[Lustre-discuss] NFS Stale Handling with Lustre on RHEL 4 U7 x86_64

[Peter Kjellstrom]

On Thursday 04 December 2008, Alex Lyashkov wrote:
> On Thu, 2008-12-04 at 13:18 +0530, anil kumar wrote:
> > Alex,
> >
> > We are working on checking the lustre scalability so that we can
> > uptake it in our production infrastructure. Below are the details of
> > our setup, tests conducted and the issues faced till now,
> > Setup details :
> > --------------------
> >
> > Hardware Used - HP DL360
> > MDT/MGS - 1
> > OST - 13 (13 HP DL360 servers used, 1 OSS = 1 OST, 700gb x 13 )
> >
> > Issue1
> > ---------
> > Test Environment:
> >
> > Operating System - Redhat EL4 Update 7 ,x86_64
> > Lustre Version - 1.6.5.1
> > Lustre Kernel -
> > kernel-lustre-smp-2.6.9-67.0.7.EL_lustre.1.6.5.1.x86_64
>
> I think this for server?
>
> > Lustre Client - Xen Virtual Machines with 2.6.9-78.0.0.0.1.ELxenU
> > kernel( patchless )
>
> 2.6.9 kernel for patchless is dangerous - some problems can be fixed due
> kernel internal limitation. i suggest apply vfs_intent and dcache
> patches.

Hmm.. Brian stated that patchless was ok now for modern EL4 kernels like 
2.6.9-78 (thread name "[Lustre-discuss] Is patchless ok for EL4 now?" early 
November...). Are you saying that this is not true and that CFS/SUN still 
thinks patchless client will have problems on EL4?

/Peter
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