DR Mirrors not operational on AFF A900 during ONTAP upgrade and after installation
Applies to
- MetroCluster IP
- AFF A900
- Interconnect
Issue
Following Installation of MetroCluster IP notes or during FC to IP transition, the HA, DR or AUX interconnect connectivity can be lost even though the physical connectivity is present and healthy.
- The Mirror status will report as disabled and offline, even while the iWARP connections are up in
metrocluster interconnect show:
Cluster1::> metrocluster interconnect show
(metrocluster interconnect show)
Mirror Mirror
Partner Admin Oper
Node Partner Name Type Status Status Adapter Type Status
---- ------------ ------- -------- ------- ------- ------ ------
Node1A Node2A HA enabled online
e1a iWARP Up
e1b iWARP Up
Node1B DR disabled offline
e1a iWARP Up
e1b iWARP Up
Node2B AUX disabled offline
e1a iWARP Up
e1b iWARP Up
Node2A Node1A HA enabled online
e1a iWARP Up
e1b iWARP Up
Node2B DR disabled offline
e1a iWARP Up
e1b iWARP Up
Node1B AUX disabled offline
e1a iWARP Up
e1b iWARP Up
- It is also possible that the Local HA will be offline because of the loss of NVRAM synchronization. The eligibility to failover can be observed in
storage failover show:
Cluster1::> storage failover show
Takeover
Node Partner Possible State Description
-------------- ----------- -------- -------------------------------------------
NodeA1 NodeA2 true Connected to NodeA2
NodeA2 NodeA1 true Connected to NodeA1
NodeA3 NodeA4 false Waiting for NodeA4, Partial
giveback, Takeover is not possible:
Storage failover interconnect error,
NVRAM log not synchronized, Disk
inventory not exchanged
NodeA4 NodeA3 false Waiting for NodeA3, Takeover
is not possible: Storage failover
interconnect error, NVRAM log not
synchronized, Disk inventory not
exchanged
::*> system ha interconnect status show
Node: NodeA3
Link Status:
Link 0 Status: up
Link 1 Status: up
IC RDMA Connection: down
Is Link 0 Active: true
Is Link 1 Active: true