On Fri, Oct 23, 2015 at 7:59 AM, Howard Chu <h...@symas.com> wrote: > If the stream of writes is large enough, you could omit fsync because > everything is being forced out of the cache to disk anyway. In that > scenario, the only thing that matters is that the writes get forced out in > the order you intended, so that an interruption or crash leaves you in a > known (or knowable) state vs unknown.
The RADOS storage semantics actually require that we know it's durable on disk as well, unfortunately. But ordered writes would probably let us batch up commit points in ways that are a lot friendlier for the drives! -Greg -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
