iSCSI session state is changed to Reconnecting for the target

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Category:: metrocluster

Specialty:: metrocluster

Last Updated:

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