The controller might do several different things, you should first test how it
behaves
Does it flush data from cache to disk when instructed to? Most controllers
ignore flushes in writeback mode (that is why they are so fast), which is both
bad and good - bad when the controller dies but good f
Hello,
We are building a new Ceph cluster and have a few questions regarding
the use of write barriers, controler cache, and disk cache (buffer).
Greg said that barriers should be used
(http://lists.ceph.com/pipermail/ceph-users-ceph.com/2013-July/002854.html)
for data safety which is the de
