Unable to write anything to NFS mount, getting input/output error

Solution Verified - Updated -

Issue

Unable to write anything to 2 NFS mount /share1, /share2 (multiprotocol file system, nfs + cifs).
Users including root getting input/output error. This issue is intermittent and started occuring after OS upgrade to 9.2.

Environment

  • Red Hat Enterprise Linux 9 NFS client
  • DELL EMC unity storage NFS server

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