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MetroCluster backend LUNs show disk failed during E-Series FW update

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Applies to

  • FAS8200
  • ONTAP 9.3
  • Fabric Metrocluster
  • E-Series Backend

Issue

  • While the customer was performing firmware updates on their E-Series storage arrays the attached ONTAP Fabric Metrocluster reported multiple disks failed due to SCSI timeout errors:
 
Example:
Fri Dec 04 20:09:18 EST [node1: config_thread: raid.config.filesystem.disk.not.responding:notice]: File system Disk /node1/plex0/rg0/switch1:12.126L119 Shelf - Bay - [NETAPP   INF-01-00        0842] S/N [xxxxxxxxxxxxxxxxxxxxxx] UID [xxxxxxxx:xxxxxxxx:xxxxxxxx:xxxxxxxx:00000000:00000000:00000000:00000000:00000000:00000000] is not responding.
  • These errors lead to multiple syncmirror plex failures on both clusters in the Metrocluster.

Example:

Aggregate aggrname (online, raid0, mirror degraded) (block checksums)
  Plex /aggrname/plex0 (offline, failed, inactive)
    RAID group /aggrname/plex0/rg0 (partial, block checksums)

      RAID Disk    Device                  HA  SHELF BAY CHAN Pool Type  RPM  Used (MB/blks)    Phys (MB/blks)
      ---------    ------                  ------------- ---- ---- ---- ----- --------------    --------------
      data    FAILED                      N/A                        13972000/ -
      data        switch1:12.126L78     0f    -   -          0   LUN   N/A 13972000/28614656000 14000000/28672000000
      data    FAILED                      N/A                        13972000/ -
      data        switch1:12.126L82     0f    -   -          0   LUN   N/A 13972000/28614656000 14000000/28672000000
      data        switch1:12.126L80     0f    -   -          0   LUN   N/A 13972000/28614656000 14000000/28672000000
      data    FAILED                      N/A                        13972000/ -
      Raid group is missing 3 disks.

 

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