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Status Delivered
Workspace Storage Scale (formerly known as GPFS)
Created by Guest
Created on Aug 9, 2018

RELATED IDEAS

Loss of access with nsddevices script

This is the follow up of case TS001236089 when customer copy the script "nsddevices" to the directory /var/mmfs/etc/ on ESS I/O nodes that prevent the code to discover disks for the recovery groups which result in loss access. This RFE is to address the clarification of the nsddevices script usage and add the code protection to prevent such drastic result in the future.

Idea priority High
  • Guest
    Reply
    |     Sep 30, 2020

    Due to processing by IBM, this request was reassigned to have the following updated attributes:
    Brand - Servers and Systems Software
    Product family - IBM Spectrum Scale
    Product - Spectrum Scale (formerly known as GPFS) - Public RFEs
    Component - Product functionality

    For recording keeping, the previous attributes were:
    Brand - Servers and Systems Software
    Product family - IBM Spectrum Scale
    Product - Spectrum Scale (formerly known as GPFS) - Public RFEs
    Component - V4 Product functionality

  • Guest
    Reply
    |     Aug 16, 2018

    Here are the suggested changes:
    - change sample script so that it returns non-zero- this won't help as the customer copies the file from a working node with NSDs, not from the sample directory
    - set files to be immutable - this will prevent users to change files such as mmdevdiscover but will not prevent the copy of nsddevices script.
    - implement health check for the script to be present in ESS I/O node - this will allow users to identify the issue but may not prevent the outage
    - update mmdevdiscover script to ignore nsddevices script for the env not using nsds such as ESS I/O nodes - this will prevent the outage
    - update documents to clearly specify that nsddevices won't work in ESS I/O nodes- this will help only users read the document

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