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LOGIN_INVALID_PDU error during concurrent execution of "iscsiadm -m discoverydb" command

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Category:
ontap-9
Specialty:
san
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Applies to

  • ONTAP 9
  • iSCSI Protocol

Issue

When executing the iscsiadm -m discoverydb command concurrently in large numbers, the below error may be observed, which signifies a LOGIN_INVALID_PDU error.
 
iscsiadm: Login response timeout. Waited 30 seconds and did not get response PDU.
iscsiadm: discovery login to 192.168.x.x failed, giving up 2
iscsiadm: Could not perform SendTargets discovery: encountered non-retryable iSCSI login failure

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