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Rebooting SP due to loss of ACP comms

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Applies to

  • ONTAP 9
  • Service Processor (SP)

Issue

  • SP reboot after ACP alert issue cleared. EMS log example:

[node_name-01: dsa_worker1: ses.status.ACPError:alert]: DS2246 (S/N SHFHU0123456789) shelf 0 on channel 0a ACP Processor error for SAS shelf ACP processor 2: critical status    ; Alternate Control Path hardware failed This module is on the rear of the shelf at the top right, on shelf module B.
[node_name-01: statd: monitor.shelf.fault:alert]: Critical fault reported on disk storage shelf attached to channel 0a. Check fans, power supplies, disks, and temperature sensors.
[node_name-01: monitor: monitor.globalStatus.critical:EMERGENCY]: Disk shelf fault.
[node_name-01: dsa_worker2: ses.status.ACPError:alert]: DS2246 (S/N SHFHU0123456789) shelf 0 on channel 0a ACP Processor error for SAS shelf ACP processor 1: critical status    ; Alternate Control Path hardware failed This module is on the rear of the shelf at the top left, on shelf module A.
[node_name-01: dsa_worker2: ses.status.ACPInfo:info]: DS2246 (S/N SHFHU0123456789) shelf 0 on channel 0a ACP Processor information for SAS shelf ACP processor 2: normal status.
[node_name-01: splog_main: splog.running.normally:info]: Process splogd is operating normally.
[node_name-01: dsa_worker1: ses.status.ACPInfo:info]: DS2246 (S/N SHFHU0123456789) shelf 0 on channel 0a ACP Processor information for SAS shelf ACP processor 1: normal status.
[node_name-01: statd: monitor.shelf.fault.ok:notice]: Fault previously reported on disk storage shelf attached to channel 0a has been corrected.
[node_name-01: monitor: monitor.globalStatus.ok:notice]: The system's global status is normal.

[node_name-02: statd: monitor.shelf.fault:alert]: Critical fault reported on disk storage shelf attached to channel 0a. Check fans, power supplies, disks, and temperature sensors.
[node_name-02: monitor: monitor.globalStatus.critical:EMERGENCY]: Disk shelf fault.
[node_name-02: dsa_worker1: ses.status.ACPError:alert]: DS2246 (S/N SHFHU0123456789) shelf 0 on channel 0a ACP Processor error for SAS shelf ACP processor 1: critical status    ; Alternate Control Path hardware failed This module is on the rear of the shelf at the top left, on shelf module A.
[node_name-02: splog_main: splog.running.normally:info]: Process splogd is operating normally.
[node_name-02: dsa_worker3: ses.status.ACPInfo:info]: DS2246 (S/N SHFHU0123456789) shelf 0 on channel 0a ACP Processor information for SAS shelf ACP processor 2: normal status.
[node_name-02: dsa_worker2: ses.status.ACPInfo:info]: DS2246 (S/N SHFHU0123456789) shelf 0 on channel 0a ACP Processor information for SAS shelf ACP processor 1: normal status.
[node_name-02: statd: monitor.shelf.fault.ok:notice]: Fault previously reported on disk storage shelf attached to channel 0a has been corrected.
[node_name-02: monitor: monitor.globalStatus.ok:notice]: The system's global status is normal.

  • Automatically SP reboot with event message example:

Record 833: Tue Oct 13 18:20:19 2020 [SP.critical]: Rebooting SP due to loss of ACP comms

  • ACP status is ok and working fine.
  • High number of transmitted frames and bytes/second, through management e0M port: 

    -- interface  e0M  (30 days, 20 hours, 46 minutes, 42 seconds) --
    RECEIVE
    …
    TRANSMIT
>>> Total frames:     2992m | Frames/second:    1122  | Total bytes:      4523g
    Bytes/second:     1696k | Total errors:        0  | Errors/minute:       0
    Total discards:      0  | Queue overflow:      0  | Multi/broadcast: 90594
    …
 
    -- interface  e0M  (30 days, 20 hours, 44 minutes, 31 seconds) --
    RECEIVE
    …
    TRANSMIT
>>> Total frames:      216m | Frames/second:      81  | Total bytes:       322g
    Bytes/second:      120k | Total errors:        0  | Errors/minute:       0
    Total discards:      0  | Queue overflow:      0  | Multi/broadcast: 90526
    …

  • Node management LIF and intercluster LIF sharing same Broadcast Domain.

 

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