[CentOS] fs for > 16 TiB partition

[Peter Kjellstrom]

On Thursday 07 May 2009, Bent Terp wrote:
> On Thu, May 7, 2009 at 9:05 AM, Pasi Kärkkäinen <pasik at iki.fi> wrote:
> > On Wed, May 06, 2009 at 11:27:27AM +0200, Bent Terp wrote:
> >> We've got a 110 TB xfs system in production based on a logical volume
> >> striped over 9 boxes of SATA disk, works like a charm with great
> >> throughput as we stripe over 3 controllers :-)
> >
> > Are you running x86 32bit or x86_64 ?
> >
> > iirc there has been problems with XFS on 32bit kernel.. stack size
> > related or so? So 64bit has been the recommended way to go..
>
> We run 64bit on most machines cuz they've got more than 4 gig ram.
> (And any besserwissers about to sound of about PAE kernels can kindly
> do so in another thread cuz I'm NOT listening!)
>
> As an aside, I hadn't heard of issues with 32bit xfs but in retrospect
> it can see the logic in it: a lot of company-supplied code has had
> 64bit issues cuz it came from a 32bit environment, but SGI was never
> "most companies" :-)

This is not really a 32 vs. 64 bit issue. The problem is that redhat (unlike 
most everyone else) builds their 32-bit kernel with 4K kernel stack size and 
XFS almost needs 8K kernel stacks.

/Peter
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