> Mongorestore inserts documents one at a time into new extents, so you
> are essentially de-fragmenting your data files. It is not surprising
> that the dbs on the restored cluster are smaller than the original
> databases.

> On Oct 29, 3:44 am, Martinus Martinus <martinus...@gmail.com> wrote:
> > Hi,

> > I tried to restore my backup from mongodump into my new clusters using
> > mongorestore. When I do show dbs from the mongos I got the size is not
> the
> > same :

> > From original clusters :
> > admin (empty)
> > config (empty)
> > animal (empty)
> > animal2 (empty)
> > animal3 3.9521484384313226GB
> > animal4 0.203125GB
> > animal5 0.203125GB
> > animal6 0.203125GB
> > animal7 0.203125GB
> > test (empty)
> > animal8 19.8984375GB
> > animal9 0.203125GB

> > From new restore clusters :
> > config 0.046875GB
> > animal3 0.953125GB
> > animal4 0.078125GB
> > animal5 0.078125GB
> > animal6 0.078125GB
> > animal7 0.078125GB
> > animal8 2.90625GB
> > animal9 0.203125GB

> > Is this supposed to be normal?

> > Thanks.

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