[gpfsug-discuss] add local nsd back to cluster?

[Kidger, Daniel]

Yes you can – this is actually the same case as SAN attached storage (eg the usual twin tailed).
You simply reinstall Linux on that node and add it back to the cluster (mmsdrrestore).

The NSD drives are unaffected in the same way that they would have been if they were in a separate 2U SAN shelf

Daniel

Daniel Kidger
HPC Storage Solutions Architect, EMEA
daniel.kidger at hpe.com<mailto:daniel.kidger at hpe.com>

+44 (0)7818 522266

hpe.com<http://www.hpe.com/>


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From: gpfsug-discuss <gpfsug-discuss-bounces at gpfsug.org> On Behalf Of shao feng
Sent: 28 July 2022 08:03
To: gpfsug main discussion list <gpfsug-discuss at gpfsug.org>
Subject: [gpfsug-discuss] add local nsd back to cluster?

Hi all,

I am planning to implement  a cluster with a bunch of old x86 machines, the disks are not connected to nodes via the SAN network, instead each x86 machine has some local attached disks.
The question is regarding node failure, for example only the operating system disk fails and the nsd disks are good. In that case I plan to replace the failing OS disk with a new one and install the OS on it and re-attach these nsd disks to that node, my question is: will this work? how can I add a nsd back to the cluster without restoring data from other replicas since the data/metadata is actually not corrupted on nsd.

Best regards,
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