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Remote OPS observed on LUNs when using Oracle ASM

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ontap-9
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Applies to

  • ONTAP 
  • RHEL/OEL 
  • Oracle ASM

Issue

  • Remote OPS are observed on LUNs mapped to RHEL/OEL servers which are using Oracle ASM as Volume Manager.
  • The issue is observed even if multipathing parameters are set on host as per NetApp best practices.

Following command output shows remote OPS:

cluster1::*> statistics show-periodic -object lun -vserver svm_win -instance /vol/vol_win/lun1 -counter total_ops|remote_ops|remote_bytes
cluster1: lun./vol/vol_win/lun1: 5/18/2020 22:02:26
   remote   remote    total
    bytes      ops      ops
 -------- -------- --------
      35B        2        2
      29B        1        1
      31B        3        3
      26B        2        2

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