Syslog error "hpsa 0000:02:00.0: cp ffff880037900000 has check condition: unknown type: Sense: 0x5, ASC: 0x20, ASCQ: 0x0, Returning result: 0x2, cmd=[85 08 2e 00 00 00 00 00 00 00 00 00 00 40 ec 00]"

Solution Unverified - Updated

Environment

  • Red Hat Enterprise Linux 6

Issue

  • Below error messages are seen in the syslog. Issues seen in accessing the disk and performance has degraded.
hpsa 0000:02:00.0: cp ffff880037900000 has check condition: unknown type: Sense: 0x5, ASC: 0x20, ASCQ: 0x0, Returning result: 0x2, cmd=[85 08 2e 00 00 00 00 00 00 00 00 00 00 40 ec 00]
hpsa 0000:02:00.0: cp ffff880037900000 has check condition: unknown type: Sense: 0x5, ASC: 0x20, ASCQ: 0x0, Returning result: 0x2, cmd=[85 08 2e 00 00 00 00 00 00 00 00 00 00 40 a1 00]
hpsa 0000:02:00.0: cp ffff880037900000 has check condition: unknown type: Sense: 0x5, ASC: 0x20, ASCQ: 0x0, Returning result: 0x2, cmd=[85 08 2e 00 00 00 00 00 00 00 00 00 00 40 ec 00]
hpsa 0000:02:00.0: cp ffff880037900000 has check condition: unknown type: Sense: 0x5, ASC: 0x20, ASCQ: 0x0, Returning result: 0x2, cmd=[85 08 2e 00 00 00 00 00 00 00 00 00 00 40 a1 00]

Resolution

The above error messages shows that sense key returned form target is Sense: 0x5 (Illegal request) and ASC/ASCQ pair is 0x20/0x0. These return codes indicates that there was an invalid/unsupported command found in SCSI CBD (command block descriptor), due to which the target rejected the command with Sense key: 85 ATA PASS-THROUGH(16)

SCSI command 85 corresponds to "85 ATA PASS-THROUGH(16)", <<< please see SCSI Commands reference manual

ATA PASS THROUGH (16) is seen to be the standard that provides the ability to control exactly what ATA operations are executed on a target device.

These are standard SCSI commands and should not be interpreted by target as invalid commands. So it would be recommend to please try to check with the h/w vendor to verify why the target is treating below command as 'Illegal Request' as above error codes are being returned from target.

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