[gpfsug-discuss] Is GPFS starting NSDs automatically?

[Jan-Frode Myklebust]

If you do a "mmchconfig restripeOnDiskFailure=yes", such a callback will be
added for node-join events. That can be quite useful for stretched
clusters, where you want to replicate all blocks to both locations, and
this way recover automatically.


  -jf

On Wed, Aug 9, 2017 at 2:14 PM, Oesterlin, Robert <
Robert.Oesterlin at nuance.com> wrote:

> By default, GPFS does not automatically start down disks. You could add a
> callback “downdisk” via mmaddcallback that could trigger a “mmchdisk start”
> if you wanted. If a disk is marked down, it’s better to determine why
> before trying to start it as it may involve other issues that need
> investigation.
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>
> Bob Oesterlin
> Sr Principal Storage Engineer, Nuance
>
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> *From: *<gpfsug-discuss-bounces at spectrumscale.org> on behalf of "
> Tomasz.Wolski at ts.fujitsu.com" <Tomasz.Wolski at ts.fujitsu.com>
> *Reply-To: *gpfsug main discussion list <gpfsug-discuss at spectrumscale.org>
> *Date: *Wednesday, August 9, 2017 at 6:33 AM
> *To: *"gpfsug-discuss at spectrumscale.org" <gpfsug-discuss at spectrumscale.org
> >
> *Subject: *[EXTERNAL] [gpfsug-discuss] Is GPFS starting NSDs
> automatically?
>
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> Does GPFS start “down” disks in a filesystem automatically? For instance,
> when connection to NSD is recovered, but it the meantime disk was put in
> “down” state by GPFS. Will GPFS in such case start the disk?
>
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