[lustre-discuss] Adding a servicenode (failnode) to existing OSTs

[Mohr Jr, Richard Frank (Rick Mohr)]

> On Apr 3, 2018, at 1:14 PM, Steve Barnet <barnet at icecube.wisc.edu> wrote:
> 
> There appear to be a
> couple ways that this could be done:
> 
> a) Add the service nodes:
>   tunefs.lustre --servicenode=nid,nid /dev/<OST>
> 
> b) Add a failover node:
>   tunefs.lustre --param="failover.node=<nid> /dev/<OST>

The first one is the preferred method.  Keep in mind that the “—servicenode=nid,nid” syntax is intended for specifying multiple nids that belong to the same host.  To specify multiple hosts for failover, you will want to add a —servicenode option for each host.

--
Rick Mohr
Senior HPC System Administrator
National Institute for Computational Sciences
http://www.nics.tennessee.edu