SCSI Primary Commands - 2.pdf

18 July 2001 T10/1236-D Revision 20If the sense key is RECOVERED ERROR, HARDWARE ERROR or MEDIUM ERROR and if the SKSV bit is one, theSENSE-KEY SPECIFIC field shall be as shown in table 104.Table 104 — Actual retry count bytesBitByte7 6 5 4 3 2 1 015 SKSV Reserved16 (MSB)ACTUAL RETRY COUNT17 (LSB)The ACTUAL RETRY COUNT field returns vendor specific information on the actual number of retries of the recoveryalgorithm used in attempting to recover an error or exception condition.NOTE 30 This field should computed in the same way as the retry count fields within the error recovery page of theMODE SELECT command.If the sense key is NOT READY or NO SENSE and the SKSV bit is one, the SENSE-KEY SPECIFIC field shall be asshown in table 105.Table 105 — Progress indication bytesBitByte7 6 5 4 3 2 1 015 SKSV Reserved16 (MSB)PROGRESS INDICATION17 (LSB)The PROGRESS INDICATION field is a percent complete indication in which the returned value is the numerator thathas 65 536 (10000h) as its denominator. The progress indication shall be based upon the total operation.NOTE 31 It is intended that the progress indication be time related. However, since for example format time varieswith the number of defects encountered, etc., it is reasonable for the device server to assign values to various stepswithin the process. The granularity of these steps should be small enough to provide reasonable assurances to theapplication client that progress is being made.If the sense key is COPY ABORTED and the SKSV bit is one, the SENSE-KEY SPECIFIC field shall be as shown intable 106.Table 106 — Segment pointer bytesBitByte7 6 5 4 3 2 1 015 SKSV Reserved SD Reserved BPV BIT POINTER16 (MSB)FIELD POINTER17 (LSB)The segment descriptor (SD) bit indicates whether the field pointer is with reference to the start of the parameter listor to the start of a segment descriptor. An SD value of zero indicates that the field pointer is relative to the start ofdpANS SCSI Primary Commands - 2 (SPC-2) 139