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ATTO bridge with firmware 2.96 unexpectedly reboots due to data abort exception

Last Updated:

Applies to

  • ONTAP 9
  • ATTO 7500N Fibrebridges
  • ATTO firmware 2.96
  • Fabric-Attached MetroCluster


  • ATTO bridge reboots unexpectedly and the following messages are seen in event logs:

[Node-01: dsbridge_admin: bridge.removed:info]: FC-to-SAS bridge Broc-sansw1:8.126L0 [ATTO     FibreBridge7500N 2.96] S/N [FB7500N10XXXX] was removed.
[Node-01: dsbridge_admin: bridge.discovered:info]: FC-to-SAS bridge Broc-sansw1:8.126L0 [ATTO     FibreBridge7500N 2.96] S/N [FB7500N10XXXX] was discovered.
[Node-01: dsbridge_admin: bridge.rebooted:debug]: FC-to-SAS bridge Broc-sansw1:8.126L0 [ATTO     FibreBridge7500N 2.96] S/N [FB7500N10XXXX] was rebooted.
[Node-01: dsbridge_admin: callhome.bridge.reboot.unexp:alert]: Call home for Bridge Unexpected Reboot: FB7500N10XXXX

  • Autosupport triggers the following message:

System Notification (Bridge Unexpected Reboot: FB7500N10XXXX) ALERT

  • The ATTO event logs indicate data abort exception at the time of the reboot:

05BF5C 19:52:39 05/18/23 CRIT Data Abort Exception (012U), DFAR= 012ba17a, DFSR=
05BF5D 19:52:39 05/18/23 CRIT 00000801, LR= 0039133c
05BF5E 19:52:39 05/18/23 INFO Data Abort
05BF5F 19:52:39 05/18/23 INFO 05/18/2023 19:52:39
05BF60 19:52:39 05/18/23 INFO ST[006d5160-006d7160] | FP[006d709c] CPSR[60000197]
05BF61 19:52:39 05/18/23 INFO 001464f8<-0026c0a0 | SP[006d70a0] FP[006d7114]
05BF62 19:52:39 05/18/23 INFO 0026bff0<-0026b698 | SP[006d7118] FP[006d7124]
05BF63 19:52:39 05/18/23 INFO 0026b684<-0000059c | SP[006d7128] FP[1bb61e2c]
05BF64 19:52:39 05/18/23 INFO FP out of range [6d7124]
05BF65 19:52:39 05/18/23 INFO ST[1bb61000-1bb62000] | FP[1bb61e2c] CPSR[60000193]
05BF66 19:52:39 05/18/23 INFO 00390de4<-00391ec4 | SP[1bb61e30] FP[1bb61e5c]
05BF67 19:52:39 05/18/23 INFO 00391e74<-003929a8 | SP[1bb61e60] FP[1bb61e6c]
05BF68 19:52:39 05/18/23 INFO 00392938<-00373690 | SP[1bb61e70] FP[1bb61fac]
05BF69 19:52:39 05/18/23 INFO 0037356c<-00374490 | SP[1bb61fb0] FP[1bb61ffc]
05BF6A 19:52:39 05/18/23 INFO 00373ba4<-003f1b10 | SP[1bb62000] FP[1bb62000]
05BF6B 19:52:39 05/18/23 INFO Exception occurred. Possible redundant preceding log entries
05BF6C 00:00:05 01/01/00 INFO Reset. HW Code: Software Warm
05BF6D 00:00:05 01/01/00 INFO Reset. Reason: Data Abort Exception
05BF6E 19:53:47 05/18/23 SYS System date has changed. Current date:[05/18/2023]
05BF6F 19:53:47 05/18/23 INFO Boot/reset occurred (012U)
05BF70 19:53:47 05/18/23 INFO Checkpoint 39 B:0 S0:0:0 S1:0:0 D0:0 C:0 O:0 I:0

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