Linux NFS client vs NETAPP - client hang - server not responding

This document (7024103) is provided subject to the disclaimer at the end of this document.

Environment

SUSE Linux Enterprise Server 12 Service Pack 5 (SLES 12 SP5)
SUSE Linux Enterprise Server 12 Service Pack 4 (SLES 12 SP4)
NETAPP ONTAP < 9.1P15

Situation

NFS client does hang. NETAPP NFS server is ONTAP Version < 9.1P15. System log on nfs client do report "nfs server not responding". Kernel is >= 4.11 which matches SLES 12 SP4 and later. There was no issue with SLES 12 SP3 or prior e.g. kernel < 4.11
 

Resolution

Update of NETAPP to ONTAP version > 9.1P15 is needed. There is no workaround on Linux side possible.

Cause

This is an incompatibility between NETAPP ONTAP < 9.1P15 and kernel >= 4.11, because of NFS related fixes in Linux kernel.

Disclaimer

This Support Knowledgebase provides a valuable tool for SUSE customers and parties interested in our products and solutions to acquire information, ideas and learn from one another. Materials are provided for informational, personal or non-commercial use within your organization and are presented "AS IS" WITHOUT WARRANTY OF ANY KIND.

  • Document ID:7024103
  • Creation Date: 06-Sep-2019
  • Modified Date:28-May-2020
    • SUSE Linux Enterprise Server

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