LLNL has always in the past upgraded the servers first. Chris
On 06/22/2016 09:01 AM, E.S. Rosenberg wrote: > I always understood the recommendation was to update the clients (and > LNET Routers) before the servers and not the other way around? > > > On Tue, Jun 21, 2016 at 1:16 AM, Mohr Jr, Richard Frank (Rick Mohr) > <rm...@utk.edu <mailto:rm...@utk.edu>> wrote: > > > > On Jun 20, 2016, at 5:00 PM, Jessica Otey <jo...@nrao.edu > <mailto:jo...@nrao.edu>> wrote: > > > > All, > > I am in the process of preparing to upgrade a production lustre system > running 1.8.9 to 2.4.3. > > This current system has 2 lnet routers. > > Our plan is to perform the upgrade in 2 stages: > > 1) Upgrade the MDS and OSSes to 2.4.3, leaving clients in 1.8.9. > > 2) Upgrade all clients to 2.4.3 (thus allowing the entire system to be > subsequently updated to 2.5 and beyond) > > > > The problem is that I can't seem to locate any information about the > version requirements (if any) for lnet routers. Does the lnet router have to > be the same as mds, or the same as the clients? Or both? > > The LNet routers do not need to be the same as either the servers or > the clients as far as I know. I don’t know if there is any specific > compatibility matrix for LNet versions, but if you are mainly > dealing with 1.8.9 and 2.4.3, I think either version would be fine. > With that being said, I usually try to keep my LNet routers and > Lustre servers at the same version. If you are going to take down > your servers to upgrade to 2.4.3, you may as well just upgrade the > two LNet routers while you are at it. The clients can then be > upgraded later like you listed in your plan. > > -- > Rick Mohr > Senior HPC System Administrator > National Institute for Computational Sciences > http://www.nics.tennessee.edu > > _______________________________________________ > lustre-discuss mailing list > lustre-discuss@lists.lustre.org <mailto:lustre-discuss@lists.lustre.org> > http://lists.lustre.org/listinfo.cgi/lustre-discuss-lustre.org > > > > > _______________________________________________ > lustre-discuss mailing list > lustre-discuss@lists.lustre.org > http://lists.lustre.org/listinfo.cgi/lustre-discuss-lustre.org > _______________________________________________ lustre-discuss mailing list lustre-discuss@lists.lustre.org http://lists.lustre.org/listinfo.cgi/lustre-discuss-lustre.org
