> 
> Which version of Ceph was this deployed on? Did you use the default
> value for bluestore_min_alloc_size(_hdd)? If it's before Pacific and
> you used the default, then the min alloc size is 64KiB for HDDs, which
> could be causing quite a bit of usage inflation depending on the sizes
> of objects involved.
> 

Is it recommended that if you have a pre-pacific cluster you change this now 
before upgrading?
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