> Hi, I am trying to figure out what is best setup for us. We would like to use
> thin provisioning which is available on XIV (on our FCP LUNs).
> Unfortunately it does not work  very good with ext3 file system. To reclaim
> some space I have to "zero out" free space first (after removing files) and
> than it takes weeks(!) for XIV to reclaim some unused space.
> 
> XIV redbooks suggest using Veritas Storage Fundation which is unavailable
> in sles11 for Z.

Try xfs. XFS seems to play nice with the XIVs. 

> I wonder if oracle would mind hmmm  (they hate whenever we do
> something different).

Something different that they can't charge for, anyway. (8-|)

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