You can expect read-after-write on any object. That is, once the write is complete, any subsequent reader will see the result. -Sam On Tue, Dec 18, 2012 at 12:51 AM, Rutger ter Borg <rutger@xxxxxxxxxxx> wrote: > > Dear list, > > I have a question regarding concurrency guarantees of Rados. Suppose I have > two nodes, say A and B, both running a process, and both using the same > rados storage pool, maybe connected through different OSDs. Suppose node A > updates an object in the storage pool, and after completion immediately > notifies B (through its own messaging layer) that that specific object has > been updated. Then, can I assume that, if B re-reads that object, it will > always get the updated one? If not, what would be the recommended way of > notifying B? > > IOW, what kind of consistency model should I assume? > > Thanks, > > Rutger > > > -- > To unsubscribe from this list: send the line "unsubscribe ceph-devel" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
