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Panic String:thread (swi4: clock) on cpu X hung for 4001 milliseconds

  1. Last updated
    Jan 29, 2025
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Category:
fas-systems
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hw
Last Updated:
1/29/2025, 1:14:24 AM

Applies to

  • AFF A150
  • AFF A200 | FAS2620 | FAS2650
  • AFF A220 | AFF C190 | FAS2720 | FAS2750
  • AFF A300 | FAS8200
  • AFF A700 | FAS9000
  • AFF A900 | FAS9500
  • mSATA boot device (P/N X3320A)
  • Fails to boot ONTAP OS

Issue

  • The node with the boot device experiencing the issue will panic, similar to:

pass0: CAM_CMD_TIMEOUT, retrying (1 retry left)
aprobe0: CAM_CMD_TIMEOUT, retrying (1 retry left)
ada0 at ahcich0 bus 0 scbus0 target 0 lun 0
ada0:  s/n SPG18280BA5 detached
PANIC  : thread (swi4: clock(X)) on cpu X hung for 4001 milliseconds

  • There may also be additional failure messages after the panic, similar to:

PANIC: thread (swi4: clock (0)) on cpu 0 hung for 4001 milliseconds in process swi4: clock (0) on release 9.7P13 (C) on Sun Jan  2 04:11:47 PST 2022version: 9.4P3: Thu Oct 11 18:25:55 EDT 2018

ERROR: ATA device failure

ERROR: [D9] Boot option loading failed

  • Event logs may indicate unrecoverable IDE device failure on some platforms:

4ab | 01/02/2022 | 12:12:41 | System Firmware Error | Unrecoverable IDE device failure | Asserted

 

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