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After NDU no iSCSI Sessions can be established on new Interfaces

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ontap-9
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san
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Applies to

  • ONTAP 9
  • iSCSI

Issue

  • After NDU(nondisruptive upgrade) some iSCSI interfaces became operationally down and no new iSCSI session can be established
  • Multiple hosts lost paths to the affected(operationally down) iSCSI interfaces
  • TPGT(Target Portal Group Tag) is shown as 0(zero) from iscsi interface show:
::> iscsi interface show
           Logical         Status                     Curr        Curr
Vserver    Interface  TPGT Admin/Oper IP Address      Node        Port Enabled
---------- ---------- ---- ---------- --------------- ----------- ---- -------
svm        iscsi_1-1    up/down    192.168.1.31    cluster1-01  e0e  true
svm        iscsi_1-2    up/down    192.168.2.31    cluster1-01  e0f  true

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