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Paths to the LUN from one controller not detected in RHEL 7

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ontap-9
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san
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Applies to

  • ONTAP 9.x
  • RHEL

Issue

  • Linux RHEL7 server detects paths to one controller only:

SVM_FC (3600a09803830446c485d4c4a33xxxxxx) dm-66 NETAPP ,LUN C-Mode

  size=5.0T features='4 queue_if_no_path pg_init_retries 50 retain_attached_hw_handle' hwhandler='1 alua' wp=rw

  `-+- policy='service-time 0' prio=50 status=active

    |- 2:0:7:0 sdds 71:160 active ready running

    `- 5:0:5:0 sddt 71:176 active ready running

  • Error messages in the server logs:

Mar 3 12:36:53 rhel kernel: sd 2:0:6:0: timing out command, waited 180s

Mar 3 12:36:55 rhel kernel: sd 5:0:6:0: timing out command, waited 180s

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