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Error message: Permanent errors on all HA mailbox disks (while writing master block) in process fmmbx_instance

Last Updated:

Applies to

  • Data ONTAP 7 or earlier.
  • Data ONTAP 8.2.5 7-Mode


  • Possible stale mailbox instance on local/remote site with the following message on the storage system:

[ds-dt01terra: fmmbx_instanceWorke:info]: missing lock disks, possibly stale mailbox

  • After reassigning the drives during an upgrade, no mailbox disks were visible.
  • Missing mailbox disks.


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