SCSI error: return code = 0x08000002 - Illegal Request on Hitachi Command Device

Solution Verified - Updated

Environment

  • Red Hat Enterprise Linux (RHEL) 5
  • Red Hat Enterprise Linux (RHEL) 6
  • Hitachi Storage Array with Control Devices

Issue

  • We are getting errors only for first LUN coming from Storage

  • This LUN is the command device coming from Hitachi Array

  • Error snippet from messages file:

      kernel: sd 5:0:0:0: SCSI error: return code = 0x08000002
  kernel: Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE,SUGGEST_OK
  kernel: sdaw: Current: sense key: Illegal Request
  kernel:     Add. Sense: Invalid field in parameter list
  kernel:
  kernel: sd 3:0:0:0: SCSI error: return code = 0x08000002
  kernel: Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE,SUGGEST_OK
  kernel: sdc: Current: sense key: Illegal Request
  kernel:     Add. Sense: Invalid field in parameter list

  • Would like to know if there is any known issues with Hitachi Disks (LUN id :0)

  • From /proc/scsi/scsi:

      Host: scsi3 Channel: 00 Id: 00 Lun: 00
    Vendor: HITACHI  Model: OPEN-V-CM        Rev: 6008
    Type:   Direct-Access                    ANSI SCSI revision: 03

  Host: scsi5 Channel: 00 Id: 00 Lun: 00
    Vendor: HITACHI  Model: OPEN-V-CM        Rev: 6008
    Type:   Direct-Access                    ANSI SCSI revision: 03

Resolution

  • These command luns should declare themselves as SCSI type 0Ch (control device) vs 00h (disk): 

      00h, Direct-access block device
  0Ch, Storage array controller device  <<=

  • If native multipath solution is used these can be blacklisted, if third-party vendor multipath is used check with the multipath vendor to blacklist command luns.

  • Alternatively, remove these devices from the host (please check this with the storage vendor).

Root Cause

  • This error is recorded only when special devices are used to manage the storage controllers, and setup commands are being sent to the special device, of which it is return an Illegal Request

    • a scsi control device will not support typical commands supported by a scsi disk device, and vice-versa.

  • These are special command devices used to manage the XP RAID manager (RM) BC and CA control operations (metadata):

      Host: scsi3 Channel: 00 Id: 00 Lun: 00
    Vendor: HITACHI  Model: OPEN-V-CM        Rev: 6008
    Type:   Direct-Access                    ANSI SCSI revision: 03

  • The "return code = 0x08000002" means that the SCSI target device returned back a 05h Illegal Request as its SCSI status and that there is sense buffer available from the device with additional information on the error.

  • The "sense key" information that is output following the return code, here we see an 'Illegal Request':

      Category        Key     ASC/ASCQ   Error Condition
  ==================================================
  Illegal Request  5        26/00    INVALID FIELD IN PARAMETER LIST

Diagnostic Steps

  • The following is shown in /var/log/messages:

      kernel: sd 5:0:0:0: SCSI error: return code = 0x08000002
  kernel: Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE,SUGGEST_OK
  kernel: sdaw: Current: sense key: Illegal Request
  kernel:     Add. Sense: Invalid field in parameter list
  kernel:
  kernel: sd 3:0:0:0: SCSI error: return code = 0x08000002
  kernel: Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE,SUGGEST_OK
  kernel: sdc: Current: sense key: Illegal Request
  kernel:     Add. Sense: Invalid field in parameter list
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