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MetroCluster down after power outage

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metrocluster
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metrocluster
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Applies to

  • MetroCluster IP
  • ONTAP 9

Issue

  • All of the nodes are shut down
  • The EMS log is flooded with scsi.cmd errors (command aborts):

Example:

ClusterA::> event log show -event *scsi.cmd*
Time                Node             Severity      Event
------------------- ---------------- ------------- ---------------------------
6/22/2022 11:45:33  ClusterA-02      ERROR         scsi.cmd.mcc.lunmgr.io.error: Disk device S/N 000000000000
- CDB 0x2a:036e8e20:0028 - (scsi error: reservation conflict) - Sense Data SCS I:no sense -  (0x0 - 0x0 0x0 0x0)(DT 3). 
(HA status 0x0) - (out_status_flags 0x4)
  • A large number of remote disks are failed
Example:

Plex /aggr1_A02/plex0 (offline, failed, inactive)
    RAID group /aggr1_A02/plex0/rg0 (partial, block checksums)

      RAID Disk Device          HA  SHELF BAY CHAN Pool Type  RPM  
      --------- ------          ------------- ---- ---- ---- ----- 
      dparity   0a.30.0         0a    30  0   SA:A   0  FSAS  7200 
      parity    0a.30.1         0a    30  1   SA:A   0  FSAS  7200 
      data      0a.30.2         0a    30  2   SA:A   0  FSAS  7200 
      data     FAILED                 N/A                        
      data      0a.30.4         0a    30  4   SA:A   0  FSAS  7200 
      data     FAILED                 N/A                        
      data      0a.30.6         0a    30  6   SA:A   0  FSAS  7200 
      data      0a.30.7         0a    30  7   SA:A   0  FSAS  7200 
      data      0a.30.8         0a    30  8   SA:A   0  FSAS  7200 
      data      0a.30.9         0a    30  9   SA:A   0  FSAS  7200 
      data     FAILED                 N/A                        
      Raid group is missing 3 disks
.

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