Re: classes crush rules new cluster

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> 
> Or, just reassign one existing OSD to the new class.
> 
> >> Note that testing this rule with crushtool won't work here since the
> >> fake OSD isn't assigned to a hosts.
> 
> > But what's the point in having a rule without the corresponding
> > devices? You won't be able to create a pool with that rule anyway
> > until the OSDs are present.
> 
> There is that.

Yes indeed so you can prepare creating all rules and pools before you have added the osds. Especially handy if you have a few shell commands you paste.
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