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

Steve Barnet barnet at icecube.wisc.edu
Fri Apr 6 13:58:41 PDT 2018

Hi all,

   Thanks for the info. Very helpful!



On 4/4/18 12:07 PM, Mohr Jr, Richard Frank (Rick Mohr) wrote:
>> 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

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