YoSiJo   

Latest experience with Ceph: Never enable `rbytes` on the CephFS client mount unless absolutely necessary.
This places an extremely heavy metadata load on the MDS and the OSDs.
So we’re not talking about a 20–30% increase, but rather, depending on the size and depth of the filesystem, an increase of several dozen to hundreds of times.

#ceph #cephfs #osd #mds

8:34pmWeb
Show threadJPL1h ago
@YoSiJo I love that you can disable it, but still get the data when you need it by using cat on a directory if you instead specify the dirstat mount option.