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IBM Cloud Pak System or IBM PureApplication System: GPFS Server Primary/Mirror node update never completes

Troubleshooting


Problem

GPFS Server Primary/Mirror node update never completes.

Symptom

In the Virtual Application Instances page for GPFS Server Primary/Mirror node, if you click Check for updates in Pattern type and then click Update to update the GPFS pattern version, then the node may get stuck in launch stage resulting in update failure.

Diagnosing The Problem

Check gpfs.log and see if the following error is present:
migrateFS did not migrate FileSystemName_<File System Name>
Failed with error mmchfs: File system FileSystemName_<fileSystemName> is not known to the GPFS cluster.

Resolving The Problem

Remove traces of not required filesystem by using following commands:

  1. Run the following command to unmount a fileSystem:
    su - gpfsprod -c 'sudo /usr/lpp/mmfs/bin/mmumount <fileSystemName> -a'

    Here, fileSystemName must be replaced with your environment value.

  2. Run the following command to delete a fileSystem:
    su - gpfsprod -c 'sudo /usr/lpp/mmfs/bin/mmdelfs <fileSystemName>

    Here, fileSystemName must be replaced with your environment value.

  3. Run the following command to check Network Shared Disk(NSD) names that are associated with the given node:
    su - gpfsprod -c 'sudo /usr/lpp/mmfs/bin/mmlsnsd -X'
  4. Run the following command to delete NSD associated with the given node from cluster:
    su - gpfsprod -c 'sudo /usr/lpp/mmfs/bin/mmdelnsd <Name of nsd associated with given node>
  5. Run Detach Storage volumes from Manage tab with Remove GPFS disks definition checkbox selected. This deletes all the unused volumes from the GPFS cluster.
  6. Delete the unnecessary entries from /opt/IBM/GPFSPattern/gpfs/filesystems file of GPFS servers.
     

Document Location

Worldwide

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Document Information

Modified date:
11 September 2020

UID

ibm11104837

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