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Re: RFC: Tuning ext3

On Thu, 2007-05-17 at 23:25 +0200, Ralf Hildebrandt wrote:
> * Andreas Dilger <adilger clusterfs com>:
> > > E. Use a kernel >= 2.6.19 (patches for extents and 48-bit support,
> > > requires Ubuntu 7.04 feisty or Fedora Core 7 or custom kernel) to allow
> > > filesystems > 8TB on Intel/AMD chips. [BigFS]
> > 
> > This means ext4.  I'd suggest including the mballoc and delalloc patches
> > from Alex if performance is the driving factor.  There is some risk
> > involved in ext4.
> I don't understand this: The whole idea was to stay "supported", and
> now the OP want's to use hand-built kernels? Why?

Yes, this item contradicts the constraint of using RHEL-supported ext3
and will be removed from the next revision of the document. In its place
will be a note that ext3 filesystems > 8TB on Intel/AMD chips aren't
possible on vanilla RHEL.



Tod Hagan
Information Technologist
AIRMAP/Climate Change Research Center
Institute for the Study of Earth, Oceans, and Space
University of New Hampshire
Durham, NH 03824
Phone: 603-862-3116

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