CHW-3345: Multi Disk Panic for NS224 shelf after ONTAP upgrade
Issue
- After an ONTAP upgrade, the controller experiences a multidisk panic (MDP).
- Both NSMs (Node Storage Modules) undergo automatic firmware upgrades.
- NSM A completes its firmware upgrade first but cannot serve data due to a hardware fault.
- NSM B reboots for its firmware upgrade before NSM A is ready to serve data.
- NSM A’s unavailability and NSM B’s reboot results in a multidisk panic (MDP) on the controller.