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Re: [dm-devel] Re: [PATCH] Implement barrier support for single device DM devices



On Fri, Feb 15, 2008 at 02:12:29PM +0000, Alasdair G Kergon wrote:
> On Fri, Feb 15, 2008 at 03:20:10PM +0100, Andi Kleen wrote:
> > On Fri, Feb 15, 2008 at 04:07:54PM +0300, Michael Tokarev wrote:
> > > I wonder if it's worth the effort to try to implement this.
> 
> My personal view (which seems to be in the minority) is that it's a
> waste of our development time *except* in the (rare?) cases similar to

At least for my machines it is the standard case; it is not rare.

And don't RH distributions install with LVM by default these days?
For those it should be the standard case too on all systems with
only a single disk.

The other relatively simple case I plan to look into (in fact
I already wrote something, but it's not postable yet) is dm-crypt
on single device. But it's a little more complicated than the
simple dm-linear case.

-Andi 


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