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iSCSI session state is changed to Reconnecting for the target

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metrocluster
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Applies to

  • ONTAP 9
  • MetroCluster IP
  • Broadcom BES53248 switch
  • Broadcom EFOS Firmware 3.4.4.4

Issue

  • The affected MetroCluster site has a power outage. 
  • The boot console logs show the iSCSI session state is changed to Reconnecting for the target error.
[ClusterB-01:iscsi.session.stateChanged:notice]: iSCSI session state is changed to Reconnecting for the target iqn.2016-06.com.netapp:09868cf1-034a-11e7-8ac6-d039ea1d28c3 (type: dr_partner, address: 192.168.188.1:65200). Reason: session login timed out.
[ClusterB-01:iscsi.session.stateChanged:notice]: iSCSI session state is changed to Reconnecting for the target iqn.2016-06.com.netapp:76acc4e4-034b-11e7-b81d-d039ea1d63df (type: dr_auxiliary, address: 192.168.188.2:65200). Reason: session login timed out.
  • ONTAP cannot boot with a panic

[ClusterB-02:cf.fm.noMBDisksOrIc:error]: Could not find the local mailbox disks. Could not determine the firmware state of the partner through the HA interconnect.
[ClusterB-02:mcc.config.bootConfigNotRead:ALERT]: Configuration could not be read from persistent storage due to internal error Failed to retrieve persistent storage (MBX) due to no mailbox disks being found. The system will try to retrieve or set the configuration automatically later, during boot.
PANIC  : Root volume is offline.
version: 9.7P3: Fri Apr 17 10:40:14 EDT 2020

  • Sometimes ONTAP can boot, but the remote disks miss

Aggregate aggr0_ClusterB_01 (online, raid_dp, mirror degraded, fast zeroed) (block checksums)
  Plex /aggr0_ClusterB_01/plex0 (online, normal, active, pool0)
    RAID group /aggr0_ClusterB_01/plex0/rg0 (normal, block checksums)
      RAID Disk Device          HA  SHELF BAY CHAN Pool Type  RPM  Used (MB/blks)    Phys (MB/blks)
      --------- ------          ------------- ---- ---- ---- ----- --------------    --------------
      dparity   0a.10.0         0a    10  0   SA:A   0   SSD   N/A 915465/1874872832 915715/1875385008 (fast zeroed)
      parity    0a.10.1         0a    10  1   SA:A   0   SSD   N/A 915465/1874872832 915715/1875385008 (fast zeroed)
      data      0a.10.2         0a    10  2   SA:A   0   SSD   N/A 915465/1874872832 915715/1875385008 (fast zeroed)
  Plex /aggr0_ClusterB_01/plex6 (offline, failed, inactive)

  • The status of the T6 or IX5 card two Ports is auto-unknown-fd-down

slot 1: Dual 10/25G Ethernet T6225-CR
        e1a MAC Address:    00:07:43:5c:54:10 (auto-unknown-fd-down)
        e1b MAC Address:    00:07:43:5c:54:18 (auto-unknown-fd-down)
        Device Type:        T6 2
        Firmware Version:   1.23.0.0
        Part Number:        110122960B0
        Hardware Revision:  0
        Serial Number:      PT20201067

slot 0: 10 Gigabit Ethernet Controller IX5-SFP+
        e0a MAC Address:    d0:39:ea:1d:37:74 (auto-unknown-fd-down)
        SFP Vendor:         AVAGO           
        SFP Part Number:    AFBR-709SMZ-NA3 
        SFP Serial Number:  AA2013305X9     
        e0b MAC Address:    d0:39:ea:1d:37:75 (auto-unknown-fd-down)
        SFP Vendor:         AVAGO           
        SFP Part Number:    AFBR-709SMZ-NA3 
        SFP Serial Number:  AA2013305XA     

 

  • Replacing the T6 card does not resolve the problem
  • The Link Status of the two switch ports is in Down status, which are connected with the T6 ports of ONTAP
(Switchname) #show port all

                 Admin     Physical   Physical   Link   Link    LACP   Actor
Intf      Type   Mode      Mode       Status     Status Trap    Mode   Timeout
--------- ------ --------- ---------- ---------- ------ ------- ------ --------
0/1              Enable    10G Full   10G Full   Up     Enable  Enable long
0/2              Enable    10G Full   10G Full   Up     Enable  Enable long
0/3              Disable   Auto                  Down   Enable  Enable long
0/4              Disable   Auto                  Down   Enable  Enable long
0/5              Enable    Auto                  Down   Enable  Enable long
0/6              Enable    Auto                  Down   Enable  Enable long
0/7              Disable   Auto                  Down   Enable  Enable long
0/8              Disable   Auto                  Down   Enable  Enable long
0/9              Enable    Auto                  Down   Enable  Enable long
0/10             Enable    Auto                  Down   Enable  Enable long
0/11             Disable   Auto                  Down   Enable  Enable long
0/12             Disable   Auto                  Down   Enable  Enable long
0/13      PC Mbr Enable    10G Full   10G Full   Up     Enable  Enable long
0/14      PC Mbr Enable    10G Full   10G Full   Up     Enable  Enable long
0/15      PC Mbr Enable    10G Full   10G Full   Up     Enable  Enable long
0/16      PC Mbr Enable    10G Full   10G Full   Up     Enable  Enable long
0/55      PC Mbr Enable    100G Full  100G Full  Up     Enable  Enable long
0/56      PC Mbr Enable    100G Full  100G Full  Up     Enable  Enable long
0/81             Disable   25G Full              Detach Enable  Enable long

 

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