NFS ls -l or stat (GETATTR) stalls while write is in progress

Solution Verified - Updated -

Issue

  • NFS getattr hangs while write is in progress
  • nfs_getattr() hangs during heavy write workloads
  • NFS: ls stalls when big files are written
  • While simultaneous writes to nfs share are going on, "ls -l" or other commands hang on getattr(), the processes remain in D state till the writes are over.
  • ls command hangs during heavy write workloads on NFS mounts
  • NFS clients using RHEL5.x shows a pause during heavy I/O

Environment

  • Red Hat Enterprise Linux 5, 6, 7, and later
  • NOT Red Hat Enterprise Linux 4 [NFS Client]

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