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E-Series controller unexpected reboot due to host initiated aborts from congestion upstream

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Applies to

E-Series

Issue

  • E-Series controller E5700 unexpectedly reboots due to ancient IO:

A:4/10/26, 11:18:05 AM (11:18:05) 271217 4010 Controller reset - Shelf 99, Bay A - Reboot Reason : SCSI: REBOOT_ON_ANCIENT_IO

  • MEL shows repeated VDD and IOP_FAST_TIMEOUT_ERROR errors:

B:4/10/26, 11:16:49 AM (11:16:49) 271163 2014 VDD logged an error - Shelf 99, Bay B - SSID: 0, Devnum: 0x010013 LBA: 0xF0F9D8, Blocks: 0x8 - Recovered----> Flags: 0x50302081 = READ: Read Operation, PARITY: Parity data, NOLOCK: Prevent lock during read err., IMMED_CACHE: Request serviced immediately to cache, PI: Error coding in effect, WRITE:_THRU: Write mode write-through, NOCACHE: CDB DPO cache lowest retention----> Recovery: 0x2 = Reconstruction used, ASC: 0x1F = IOP_FAST_TIMEOUT_ERROR, Detection: 0xF80B03DD

B:4/10/26, 11:16:49 AM (11:16:49) 271162 2014 VDD logged an error - Shelf 99, Bay B - SSID: 0, Devnum: 0x010013 LBA: 0xEF1BD7E8, Blocks: 0x8 - Recovered----> Flags: 0x50302081 = READ: Read Operation, PARITY: Parity data, NOLOCK: Prevent lock during read err., IMMED_CACHE: Request serviced immediately to cache, PI: Error coding in effect, WRITE:_THRU: Write mode write-through, NOCACHE: CDB DPO cache lowest retention----> Recovery: 0x2 = Reconstruction used, ASC: 0x1F = IOP_FAST_TIMEOUT_ERROR, Detection: 0xF80B03DD

B:4/10/26, 11:16:49 AM (11:16:49) 271161 2014 VDD logged an error - Shelf 99, Bay B - SSID: 0, Devnum: 0x010013 LBA: 0x7C535E90, Blocks: 0x28 - Recovered----> Flags: 0x50302001 = READ: Read Operation, NOLOCK: Prevent lock during read err., IMMED_CACHE: Request serviced immediately to cache, PI: Error coding in effect, WRITE:_THRU: Write mode write-through, NOCACHE: CDB DPO cache lowest retention----> Recovery: 0x2 = Reconstruction used, ASC: 0x1F = IOP_FAST_TIMEOUT_ERROR, Detection: 0xF80B03DD

  • Core dump may or may not be captured.
  • Slow data transmission reported.

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