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ONTAP Select Takeover is not possible Mailbox disks are not healthy

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Applies to

  • ONTAP Select
  • VMWare backend

Issue

  • The Mediator mailbox disks get flagged as degraded:
cluster::*> storage failover show
Node  Partner  Takeover Possible State Description
-------------- -------------- -------- -------------------------------------
Node1  Node2  false    Connected to Node2, Takeover is not possible: Mailbox disks are not healthy
Node2  Node1  false    Connected to Node1, Takeover is not possible: Mailbox disks are not healthy
cluster::*> storage iscsi-initiator show -label mediator
Node Type Label    Target Portal      Target Name           Status  Admin/Op 
---- ---- -------- ------------------ -------------------------------- --------
Node1 mailbox mediator IP  iqn.2012-05.local:mailbox.target.select000010 up/up
Node2 mailbox mediator IP  iqn.2012-05.local:mailbox.target.select000010 up/down
Failure Reason:  user-initiated iSCSI session disconnect operation

  • EMS logs show takeover status flapping with mailbox disk removed/added.
[Node2: monitor: monitor.globalStatus.critical:EMERGENCY]: Controller failover of Node1 is not possible: Mailbox disks are not healthy.
[Node2: fmmbx_instanceWorker: fmmb.lock.disk.remove:info]: Disk 0f.21 removed from Partner mailbox set
[Node2: pha_main002: mlm.vmdisk.discovery:info]: A new virtual disk with virtual device ID 21 was discovered
[Node2: cf_main: cf.fsm.takeoverOfPartnerEnabled:notice]: Failover monitor: takeover of Node1 enabled

  • Restart of ONTAP Select Deploy VM doesn't fix the issue.

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