> Is anyone out there using an IBM V7000 for their Linux?
> And anyone using any thin provisioning?  

I have some lab time scheduled with one in a couple weeks. I'll let you know 
what I find out. 

> That thread mentions btrfs, but this client wants to use RH, and from what I
> read on RH's site, they consider btrfs "experimental".  Anyone using btrfs on
> RH?

It works, but it isn't as stable yet as Solaris ZFS. If the customer is 
thinking that btrfs is the "ZFS for Linux", they're probably going to be 
somewhat disappointed. 
They're also not going to be able to directly transfer what they know about ZFS 
to btrfs; there are some subtle differences in the semantics of the commands. 

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