Exadata :Cell Rebooted SCSI error: return code & kernel: end_request: I/O error (Doc ID 1447496.1)

Last updated on OCTOBER 15, 2013

Applies to:

Exadata Database Machine V2 - Version All Versions to All Versions [Release All Releases]
Information in this document applies to any platform.
***Checked for relevance on 15-Oct-2013***

Symptoms

An Exadata cell may reboot with the SCSI error: return code & kernel: end_request: I/O error:

 

Configuration:-

cellVersion: OSS_11.2.2.4.2_LINUX.X64_111221
kernelVersion: 2.6.18-238.12.2.0.2.el5


Errors Similar To:-

Alert History:
info "IO hang detected on CD_01_cell06. Power cycle forced."


ASM Log:-

Wed Mar 28 14:03:20 2012
WARNING: Disk  in group 2 mode 0x7f is now being offlined
ORA-27603: Cell storage I/O error, I/O failed on disk  at offset 8392704 for data length 4096
ORA-27626: Exadata error: 201 (Generic I/O error)
WARNING: Read Failed. group:5 disk:52 AU:2 offset:4096 size:4096
WARNING: cache failed reading from group fn=4 blk=1 count=1 from
disk=  kfkist=0x20 status=0x02 file=kfc.c line=11366


System Log:- 

kernel: sd 0:2:6:0: SCSI error: return code = 0x00040000
cell06 kernel: end_request: I/O error, dev sdg, sector 2006351888
kernel: sd 0:2:6:0: SCSI error: return code = 0x00040000
disk LSI MR9261-8i 2.12 /dev/sdac

Cause

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