Hi Ricardo! On Wed, 11 Oct 2017, Ricardo Dias wrote: > Hi, > > I've read the current description of the Messenger V2 protocol in http: > //docs.ceph.com/docs/master/dev/msgr2/ and would like to ask some > questions about the current status of this feature. > > - What are the problems/limitations of the V1 protocol that V2 is > aiming to solve? Mainly, 1- The v1 handshake is not extensible because there isn't a negotiation of which features to use (no separate of supported vs required features). 2- v2 lets you multiplex multiple entities across the same underlying connection (e.g., a TCP stream). We plan to host multiple OSDs within the same process, and those endpoints may come and go (e.g., if one of the OSDs is logically marked down). > - Is the protocol and message formats described in the document final, > or is this just a draft still subject to discussion? Draft. It underwent a fair bit of discussion a little over a year ago so it ought to be reasonable complete, but I'm sure we'll run into problems as it is being implemented, or what to change things. > - Did someone already started the implementation of the V2 protocol? I don't think so. Thanks! sage -- 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
