Re: [MooseFS-Users] MooseFS 4.0 and new features

[Marin B. <li...@ol...>]

> MooseFS 4.x now is in “close beta” (or even more “close release-
> candidate”) stage. Currently we started to use it by ourselves. When
> we will see that there are no obvious bugs then we will release it as
> open-source product under GPL-v2 (or even GPL-v2+) licence.
> In the meantime if you want to participate in tests of MFS 4.x -
> please let us know, we will send you packages of MFS 4.x for you OS.
> 
> Marco Milano is one of our “testers” and this is why he knows more
> about MFS 4.x
> 
> HA in MFS 4.x works fully automatic. You just need to define group of
> IP numbers in your DNS for your “mfsmaster” name. Then install master
> servers and run them on machines with those IP numbers and thats it.
> One of them will became “LEADER” of the group and other “FOLLOWER”-s
> of the group. If for any reason “LEADER” goes down then one of the
> FOLLOWER’s is chosen as an “ELECT” and when more than half of
> chunkservers connects to it then it automatically switches to
> “LEADER” state and starts working as main master server. When your
> previous leader becomes available again then it usually joins the
> group as a “FOLLOWER”. This is rather “fire and forget” solution.
> They will synchronise metadata between them automatically,
> chunkservers and clients will reconnect to current leader also
> automatically etc.
> 
> Regards,
> Jakub Kruszona-Zawadzki

Hi Jakub,

Thank you for taking the time providing these answers!

Marin