Key Code Qualifier: Difference between revisions

Revision as of 08:58, 13 November 2017

Latest revision as of 22:16, 9 December 2024

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{{Short description|Type of SCSI error code}}

{{redirect|KCQ|the radio station in Saginaw, Michigan|WKCQ}}

'''Key Code Qualifier''' is an error-code returned by a [[SCSI]] device.

When a SCSI [[SCSI target|target]] device returns a [[SCSI check condition|check condition]] in response to a [[SCSI command|command]], the [[SCSI initiator|initiator]] usually then issues a [[SCSI Request Sense Command|SCSI Request Sense command]]. This process is part of a SCSI protocol called [[SCSI contingent allegiance condition|Contingent Allegiance Condition]]. The target will respond to the Request Sense command with a set of [[SCSI Request Sense Command|SCSI sense data]] which includes three fields giving increasing levels of detail about the error:

*K - sense key - 4 bits, (byte 2 of Fixed sense data format)

*C - additional sense code (ASC) - 8 bits, (byte 12 of Fixed sense data format)

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|rowspan="36" valign="top"|Soft Error||1||01||00||Recovered Write error - no index

|-一会功夫好

|1||02||00||Recovered no seek completion

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|1||5D||00||PFA threshold reached

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|rowspan="1315" valign="top"|Not Ready||2||04||00||Not Ready - Cause not reportable.

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|2||04||01||Not Ready - becoming ready

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|3||31||01||Medium Error - format command failed

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|rowspan="2023" valign="top"|Hardware Error||4||01||00||Hardware Error - no index or sector

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|4||02||00||Hardware Error - no seek complete

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|4||19||03||Hardware Error - defect list error in Grown List

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|4||31||00||Hardware Error - reassign failed

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|4||32||00||Hardware Error - no defect spare available

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|4||35||00||Hardware Error - enclosure services failure

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|4||35||01||Hardware Error - unsupported enclosure function

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|4||35||05||Hardware Error - enclosure services checksum error

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|4||3E||00||Hardware Error - logical unit has not self configured yet

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|4||313E||0001||Hardware Error - reassignlogical unit failed

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|4||3E||02||Hardware Error - timeout on logical unit

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|4||3E||03||Hardware Error - self-test failed

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|4||3E||04||Hardware Error - unable to update self-test log

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|4||44||00||Hardware Error - internal target failure

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|5||21||00||Illegal Request - LBA out of range

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|5||24||00||Illegal Request - invalid field in [[SCSI CDB|CDB]] (Command Descriptor Block)

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|5||25||00||Illegal Request - invalid LUN

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|5||55||04||Illegal Request - Insufficient Registration Resources

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|rowspan="2143" valign="top"|Unit Attention||6||28||00||Unit Attention - not-ready to ready transition (format complete)

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|6||29||00||Unit Attention - POR or device reset occurred

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|6||3F||03||Unit Attention - inquiry parameters changed

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|6||3F||04||Unit Attention - component device attached

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|6||3F||05||Unit Attention - device identifier changed

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|6||3F||06||Unit Attention - redundancy group created or modified

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|6||3F||07||Unit Attention - redundancy group deleted

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|6||3F||08||Unit Attention - spare created or modified

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|6||3F||09||Unit Attention - spare deleted

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|6||3F||0A||Unit Attention - volume set created or modified

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|6||3F||0B||Unit Attention - volume set deleted

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|6||3F||0C||Unit Attention - volume set deassigned

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|6||3F||0D||Unit Attention - volume set reassigned

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|6||3F||0E||Unit Attention - reported LUNs data has changed

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|6||3F||0F||Unit Attention - echo buffer overwritten

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|6||3F||10||Unit Attention - medium loadable

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|6||3F||11||Unit Attention - medium auxiliary memory accessible

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|6||3F||12||Unit Attention - iSCSI IP address added

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|6||3F||13||Unit Attention - iSCSI IP address removed

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|6||3F||14||Unit Attention - iSCSI IP address changed

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|6||3F||15||Unit Attention - inspect referrals sense descriptors

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|6||3F||16||Unit Attention - microcode has been changed without reset

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|6||3F||17||Unit Attention - zone transition to full

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|6||3F||18||Unit Attention - bind completed

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|6||3F||19||Unit Attention - bind redirected

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|6||3F||1A||Unit Attention - subsidiary binding changed

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|6||5D||00||Unit Attention - PFA threshold reached