Dear Ceph Experts,

We're running a production Ceph cluster with Ceph Dumpling,
with Ubuntu 12.04.3 (kernel 3.8) on the cluster nodes and
all clients. We're mainly using CephFS (kernel) and RBD
(kernel and user-space/libvirt).

Would you recommend to activate CRUSH_TUNABLES (1, not 2) for
our use case? I'd just like to make sure because crushtool
still says: "tunables are DANGEROUS and NOT YET RECOMMENDED". :-)


Cheers and thanks,

Oliver
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