Re: Are RBD volumes sparse?

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On Tue, 16 Aug 2022 11:04:48 +0200
Ilya Dryomov <idryomov@xxxxxxxxx> wrote:

> On Tue, Aug 16, 2022 at 1:48 AM Pete Zaitcev <zaitcev@xxxxxxxxxx> wrote:

> > I'm looking at restoring from a backup in an environment that operates
> > with RBD volumes. Suppose that I restore into a newly created volume.
> > Does that volume have a UNIX-like semantics of returning zeroes
> > from blocks into which no data was written yet?  

> Yes, it does.
> It is guaranteed on all backends, both at RBD and RADOS layers.


-- Pete

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