[lustre-discuss] Remove failnode parameter

Exec Unerd execunerd at gmail.com
Sun Sep 27 08:16:27 PDT 2015

Thanks for the reply.

I can't seem to get tunefs to *remove *the failnode parameter. I can
*change *the failnode NIDs, but I can't figure out how to wholesale remove
the param as if I'd never put it in.

On Thu, Sep 24, 2015 at 1:43 AM, Martin Hecht <hecht at hlrs.de> wrote:

> On 09/23/2015 02:38 AM, Exec Unerd wrote:
> > I made a typo when setting failnode/servicenode parameters, but I can't
> > figure out how to remove the failnode parameter entirely
> >
> > I can change the failnode NIDs, but I can't figure out how to completely
> > remove "failnode" from the system.
> >
> > Does anyone have an example of a syntax (maybe lctl?) that will eliminate
> > the failnode parameter from the config so there's no chance it gets in
> the
> > way of the servicenode parameter?
> >
> you have set the failnode with tunefs.lustre, right? You can erase *all*
> parameters with tunefs.lustre --erase-params and set the correct ones
> again. You can combine several ones in one call, and I recommend to use
> also the dry-run option before actually changing anything
> tunefs.lustre --erase-params --mgsnode= at o2ib --param
> sys.timeout=300  --failnode= at o2ib --dryrun
> /dev/mapper/some-device
> the output will be the previous values and the premanent disk data which
> the command intents to write. If this is ok, ommit the --dryrun option.
> BTW the file system must be unmounted to perform the tunefs command.
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