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LUNs online but not accessible after node unjoin from the cluster

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Category:
fas-systems
Specialty:
san
Last Updated:

Applies to

  • ONTAP 9
  • ESXi
  • SAN
  • FCP

Issue

  • Issue is introduced by cluster node removal or manipulation on affected ONTAP releases and is not necessarily immediately obvious  
  • High CPU usage at node level due to ssan_exempt
  • SAN Host lost access when path failover is carried out on impacted LIF
    • Scenarios that may manifest issue: HA takeover for Power failure, Over temperature, update etc and result in Host server not able to access the FC (Fiber Channel) target correctly. 

2021-07-29T09:18:37.637Z cpu7:2097711)VMW_SATP_ALUA: satp_alua_issueCommandOnPath:735: Path "vmhba2:C0:T7:L51" (UP) command 0xa3 failed with status Timeout. H:0x5 D:0x0 P:0x0 Invalid sense data: 0x0 0x0 0x0.
2021-07-29T09:18:47.637Z cpu7:2097711)VMW_SATP_ALUA: satp_alua_issueCommandOnPath:735: Path "vmhba1:C0:T7:L51" (UP) command 0xa3 failed with status Timeout. H:0x5 D:0x0 P:0x0 Invalid sense data: 0x0 0x0 0x0.
2021-07-29T09:18:57.637Z cpu7:2097711)VMW_SATP_ALUA: satp_alua_issueCommandOnPath:735: Path "vmhba2:C0:T6:L51" (UP) command 0xa3 failed with status Timeout. H:0x5 D:0x0 P:0x0 Invalid sense data: 0x0 0x0 0x0.
 

  • network interface show shows UUID (not node name) for the nodes that were removed from the cluster:

::*> network interface show
            Logical    Status     Network            Current       Current Is
Vserver     Interface  Admin/Oper Address/Mask       Node          Port    Home
----------- ---------- ---------- ------------------ ------------- ------- ----
FC_vserver
            LIF_1       up/up    20:0b:00:a0:98:xx:xx:xx Node_1     0c    true
            LIF_2       up/up    20:07:00:a0:98:xx:xx:xx Node_2     0d    true
            LIF_3       up/-     20:0c:00:a0:98:xx:xx:xx 507049c5-fd62-11e5-9977-3bcadcfd9d22 0c true
            LIF_4       up/-     20:08:00:a0:98:xx:xx:xx 507049c5-fd62-11e5-9977-3bcadcfd9d22 0d true

 

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