That big fat warning was related to the note under your second quote:
"Note: Prior to QEMU v2.4.0, if you explicitly set RBD Cache settings
in the Ceph configuration file, your Ceph settings override the QEMU
cache settings."
Short story long, starting with QEMU v2.4.0, your QEMU cache settings
1
hi,
I'm a bit confused after reading the official ceph docu regarding QEMU
and rbd caching.
http://docs.ceph.com/docs/master/rbd/qemu-rbd/?highlight=qemu
there's a big fat warning:
"Important: If you set rbd_cache=true, you must set cache=writeback or
risk data loss. Without cache=writeback, Q
