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Solution Type Technical Instruction Sure Solution 1006571.1 : List of SCSI Operational Codes (opcode)
PreviouslyPublishedAs 209175 Description This document is a list of the opcodes used in SCSI terminology and the description of that they mean. This information can be found on the following web site: http://www.t10.org/lists/2op.htm It matches the Operational Codes (that might appear in syslogs) with their related SCSI commands. Using this, we can come to know what was the command being sent by the initiator (or host). This can be useful while analyzing error/message logs. This document is not to be used as a troubleshooting document but only as a reference document. Example: (Taken for a Sun StorEdge[TM] T3 array) In the syslog, we may find something like this:- FCC0[1]: N: u1ctr (ITL 7D 1 2 TT 20 TID F4AC OP 37) Invalid command opcode What we can find here using this document:- The OP code 37 means READ DEFECT DATA. Based on the above information and our knowledge about the array and SCSI, we can conclude that this kind of message is a typical answer of an array, which shows LUNs to the server and not physical devices (and hence won't provide a defect list). So this document will help us in determining what the opcode was and what was its description. Steps to Follow The following shows several a small section of operation code table entries with each column of the table identified in detail. |-> Operation Code value (in hexadecimal) || || |-> Codes identifying how devices the operation code || |-> value. (See detailed description below.) || | || | | |-> SCSI Command represented by the operation code || |------------| |-------------------------------------------------| DTLPWROMAEBKVF 00 MMMMMMMMMMMMMM TEST UNIT READY 02 VVVVVV V 04 M O O FORMAT UNIT 04 O FORMAT MEDIUM The DTLPWROMAEBKVF letters head one column each for the several standardized SCSI device types. In the hyper-text tables, you will note that the DTLPWRSOMCAEBK column heading letters are repeated frequently. This should help you correlate column entries with the SCSI device types that the represent. The DTLPWROMAEBKVF letters stand for specific SCSI device types as follows:
In each DTLPWROMAEBKVF column, a letter (or blank) indicates the usage of the listed operation code by each specific SCSI device type. A blank in a column indicates that the listed operation code does not represent the listed command for the specific SCSI device type. One operation code can represent different SCSI commands for different SCSI device types. The example shows this for the FORMAT UNIT and FORMAT MEDIUM commands. The FORMAT UNIT command uses operation code 04h for disk devices, while the FORMAT MEDIUM command uses operation code 04h for tape devices. The letters in the DTLPWROMAEBKVF columns describe the requirements placed on the specific SCSI device type for the listed operation code and SCSI command. The following letters are used and have the noted meanings:
D - DIRECT ACCESS DEVICE (SBC-2) device column key .T - SEQUENTIAL ACCESS DEVICE (SSC-2) ------------------- . L - PRINTER DEVICE (SSC) M = Mandatory . P - PROCESSOR DEVICE (SPC) O = Optional . .W - WRITE ONCE READ MULTIPLE DEVICE (SBC-2) V = Vendor specific . . R - CD/DVE DEVICE (MMC-3) Z = Obsolete . . O - OPTICAL MEMORY DEVICE (SBC-2) . . .M - MEDIA CHANGER DEVICE (SMC-2) . . . A - STORAGE ARRAY DEVICE (SCC-2) . . . .E - ENCLOSURE SERVICES DEVICE (SES) . . . .B - SIMPLIFIED DIRECT-ACCESS DEVICE (RBC) . . . . K - OPTICAL CARD READER/WRITER DEVICE (OCRW) . . . . V - AUTOMATION/DRIVE INTERFACE (ADC) . . . . .F - OBJECT-BASED STORAGE (OSD) OP DTLPWROMAEBKVF Description -- -------------- ---------------------------------------------------- 00 MMMMMMMMMMMMMM TEST UNIT READY 01 M REWIND 01 Z V ZZZZ REZERO UNIT 02 VVVVVV V 03 MMMMMMMMMMOMMM REQUEST SENSE 04 M OO FORMAT UNIT 04 O FORMAT MEDIUM 04 O FORMAT 05 VMVVVV V READ BLOCK LIMITS 06 VVVVVV V 07 OVV O OV REASSIGN BLOCKS 07 O INITIALIZE ELEMENT STATUS 08 MOV O OV READ(6) 08 O RECEIVE 08 GET MESSAGE(6) 09 VVVVVV V 0A OO O OV WRITE(6) 0A M SEND(6) 0A SEND MESSAGE(6) 0A M PRINT 0B Z ZOZV SEEK(6) 0B O SET CAPACITY 0B O SLEW AND PRINT 0C VVVVVV V 0D VVVVVV V 0E VVVVVV V 0F VOVVVV V READ REVERSE(6) 10 VM VVV WRITE FILEMARKS(6) 10 O SYNCHRONIZE BUFFER 11 VMVVVV SPACE(6) 12 MMMMMMMMMMMMMM INQUIRY 13 V VVVV 13 O VERIFY(6) 14 VOOVVV RECOVER BUFFERED DATA 15 OMO O OOOO OO MODE SELECT(6) 16 ZZMZO OOOZ O RESERVE(6) 16 Z RESERVE ELEMENT(6) 17 ZZMZO OOOZ O RELEASE(6) 17 Z RELEASE ELEMENT(6) 18 ZZZZOZO Z COPY 19 VMVVVV ERASE(6) 1A OMO O OOOO OO MODE SENSE(6) 1B O OOO O MO O START STOP UNIT 1B O M LOAD UNLOAD 1B SCAN 1B O STOP PRINT 1C OOOOO OOOM OOO RECEIVE DIAGNOSTIC RESULTS 1D MMMMM MMOM MMM SEND DIAGNOSTIC 1E OO OOOO O O PREVENT ALLOW MEDIUM REMOVAL 1F D - DIRECT ACCESS DEVICE (SBC-2) device column key .T - SEQUENTIAL ACCESS DEVICE (SSC-2) ------------------- . L - PRINTER DEVICE (SSC) M = Mandatory . P - PROCESSOR DEVICE (SPC) O = Optional . .W - WRITE ONCE READ MULTIPLE DEVICE (SBC-2) V = Vendor specific . . R - CD/DVE DEVICE (MMC-3) Z = Obsolete . . O - OPTICAL MEMORY DEVICE (SBC-2) . . .M - MEDIA CHANGER DEVICE (SMC-2) . . . A - STORAGE ARRAY DEVICE (SCC-2) . . . .E - ENCLOSURE SERVICES DEVICE (SES) . . . .B - SIMPLIFIED DIRECT-ACCESS DEVICE (RBC) . . . . K - OPTICAL CARD READER/WRITER DEVICE (OCRW) . . . . V - AUTOMATION/DRIVE INTERFACE (ADC) . . . . .F - OBJECT-BASED STORAGE (OSD) OP DTLPWROMAEBKVF Description -- -------------- ---------------------------------------------------- 20 V VVV V 21 V VVV V 22 V VVV V 23 V V V V 23 O READ FORMAT CAPACITIES 24 V VV SET WINDOW 25 M M M READ CAPACITY(10) 25 O READ CAPACITY 25 M READ CARD CAPACITY 25 GET WINDOW 26 V VV 27 V VV 28 M MOM MM READ(10) 28 GET MESSAGE(10) 29 V VVO READ GENERATION 2A O MOM MO WRITE(10) 2A SEND(10) 2A SEND MESSAGE(10) 2B Z OOO O SEEK(10) 2B O LOCATE(10) 2B O POSITION TO ELEMENT 2C V OO ERASE(10) 2D O READ UPDATED BLOCK 2D V 2E O OOO MO WRITE AND VERIFY(10) 2F O OOO VERIFY(10) 30 Z ZZZ SEARCH DATA HIGH(10) 31 Z ZZZ SEARCH DATA EQUAL(10) 31 OBJECT POSITION 32 Z ZZZ SEARCH DATA LOW(10) 33 Z OZO SET LIMITS(10) 34 O O O O PRE-FETCH(10) 34 M READ POSITION 34 GET DATA BUFFER STATUS 35 O OOO MO SYNCHRONIZE CACHE(10) 36 Z O O O LOCK UNLOCK CACHE(10) 37 O O READ DEFECT DATA(10) 37 O INITIALIZE ELEMENT STATUS WITH RANGE 38 O O O MEDIUM SCAN 39 ZZZZOZO Z COMPARE 3A ZZZZOZO Z COPY AND VERIFY 3B OOOOOOOOOOMOOO WRITE BUFFER 3C OOOOOOOOOO OOO READ BUFFER 3D O UPDATE BLOCK 3E O O O READ LONG(10) 3F O O O WRITE LONG(10) D - DIRECT ACCESS DEVICE (SBC-2) device column key .T - SEQUENTIAL ACCESS DEVICE (SSC-2) ------------------- . L - PRINTER DEVICE (SSC) M = Mandatory . P - PROCESSOR DEVICE (SPC) O = Optional . .W - WRITE ONCE READ MULTIPLE DEVICE (SBC-2) V = Vendor specific . . R - CD/DVE DEVICE (MMC-3) Z = Obsolete . . O - OPTICAL MEMORY DEVICE (SBC-2) . . .M - MEDIA CHANGER DEVICE (SMC-2) . . . A - STORAGE ARRAY DEVICE (SCC-2) . . . .E - ENCLOSURE SERVICES DEVICE (SES) . . . .B - SIMPLIFIED DIRECT-ACCESS DEVICE (RBC) . . . . K - OPTICAL CARD READER/WRITER DEVICE (OCRW) . . . . V - AUTOMATION/DRIVE INTERFACE (ADC) . . . . .F - OBJECT-BASED STORAGE (OSD) OP DTLPWROMAEBKVF Description -- -------------- ---------------------------------------------------- 40 ZZZZOZOZ CHANGE DEFINITION 41 O WRITE SAME(10) 42 O READ SUB-CHANNEL 43 O READ TOC/PMA/ATIP 44 M M REPORT DENSITY SUPPORT 44 READ HEADER 45 O PLAY AUDIO(10) 46 M GET CONFIGURATION 47 O PLAY AUDIO MSF 48 49 4A M GET EVENT STATUS NOTIFICATION 4B O PAUSE/RESUME 4C OOOOO OOOO OOO LOG SELECT 4D OOOOO OOOO OMO LOG SENSE 4E O STOP PLAY/SCAN 4F 50 O XDWRITE(10) 51 O XPWRITE(10) 51 O READ DISC INFORMATION 52 O XDREAD(10) 52 O READ TRACK INFORMATION 53 O RESERVE TRACK 54 O SEND OPC INFORMATION 55 OOO OMOOOOMOMO MODE SELECT(10) 56 ZZMZO OOOZ RESERVE(10) 56 Z RESERVE ELEMENT(10) 57 ZZMZO OOOZ RELEASE(10) 57 Z RELEASE ELEMENT(10) 58 O REPAIR TRACK 59 5A OOO OMOOOOMOMO MODE SENSE(10) 5B O CLOSE TRACK/SESSION 5C O READ BUFFER CAPACITY 5D O SEND CUE SHEET 5E OOOOO OOOO M PERSISTENT RESERVE IN 5F OOOOO OOOO M PERSISTENT RESERVE OUT 7F O M variable length CDB (more than 16 bytes) D - DIRECT ACCESS DEVICE (SBC-2) device column key .T - SEQUENTIAL ACCESS DEVICE (SSC-2) ------------------- . L - PRINTER DEVICE (SSC) M = Mandatory . P - PROCESSOR DEVICE (SPC) O = Optional . .W - WRITE ONCE READ MULTIPLE DEVICE (SBC-2) V = Vendor specific . . R - CD/DVE DEVICE (MMC-3) Z = Obsolete . . O - OPTICAL MEMORY DEVICE (SBC-2) . . .M - MEDIA CHANGER DEVICE (SMC-2) . . . A - STORAGE ARRAY DEVICE (SCC-2) . . . .E - ENCLOSURE SERVICES DEVICE (SES) . . . .B - SIMPLIFIED DIRECT-ACCESS DEVICE (RBC) . . . . K - OPTICAL CARD READER/WRITER DEVICE (OCRW) . . . . V - AUTOMATION/DRIVE INTERFACE (ADC) . . . . .F - OBJECT-BASED STORAGE (OSD) OP DTLPWROMAEBKVF Description -- -------------- ---------------------------------------------------- 80 Z XDWRITE EXTENDED(16) 80 M WRITE FILEMARKS(16) 81 Z REBUILD(16) 81 O READ REVERSE(16) 82 Z REGENERATE(16) 83 OOOOO O O EXTENDED COPY 84 OOOOO O O RECEIVE COPY RESULTS 85 O O O ATA COMMAND PASS THROUGH(16) 86 OO OO OOOOOO ACCESS CONTROL IN 87 OO OO OOOOOO ACCESS CONTROL OUT 88 MM O O O READ(16) 89 8A OM O O O WRITE(16) 8B 8C OO O OO O M READ ATTRIBUTE 8D OO O OO O O WRITE ATTRIBUTE 8E O O O O WRITE AND VERIFY(16) 8F OO O O O VERIFY(16) 90 O O O O PRE-FETCH(16) 91 O O O O SYNCHRONIZE CACHE(16) 91 O SPACE(16) 92 Z O O LOCK UNLOCK CACHE(16) 92 O LOCATE(16) 93 O WRITE SAME(16) 93 M ERASE(16) 94 [usage proposed by SCSI Socket Services project] 95 [usage proposed by SCSI Socket Services project] 96 [usage proposed by SCSI Socket Services project] 97 [usage proposed by SCSI Socket Services project] 98 99 9A 9B 9C 9D 9E SERVICE ACTION IN(16) 9F M SERVICE ACTION OUT(16) D - DIRECT ACCESS DEVICE (SBC-2) device column key .T - SEQUENTIAL ACCESS DEVICE (SSC-2) ------------------- . L - PRINTER DEVICE (SSC) M = Mandatory . P - PROCESSOR DEVICE (SPC) O = Optional . .W - WRITE ONCE READ MULTIPLE DEVICE (SBC-2) V = Vendor specific . . R - CD/DVE DEVICE (MMC-3) Z = Obsolete . . O - OPTICAL MEMORY DEVICE (SBC-2) . . .M - MEDIA CHANGER DEVICE (SMC-2) . . . A - STORAGE ARRAY DEVICE (SCC-2) . . . .E - ENCLOSURE SERVICES DEVICE (SES) . . . .B - SIMPLIFIED DIRECT-ACCESS DEVICE (RBC) . . . . K - OPTICAL CARD READER/WRITER DEVICE (OCRW) . . . . V - AUTOMATION/DRIVE INTERFACE (ADC) . . . . .F - OBJECT-BASED STORAGE (OSD) OP DTLPWROMAEBKVF Description -- -------------- ---------------------------------------------------- A0 MMOOO OOMM OMO REPORT LUNS A1 O BLANK A1 O O ATA COMMAND PASS THROUGH(12) A2 TRUSTED COMPUTING IN [proposed] A3 OOO O OOMOOO MAINTENANCE (IN) A3 O SEND KEY A4 OOO O OOOOOO MAINTENANCE (OUT) A4 O REPORT KEY A5 O O OM MOVE MEDIUM A5 O PLAY AUDIO(12) A6 O EXCHANGE MEDIUM A6 O LOAD/UNLOAD C/DVD A7 OO O O MOVE MEDIUM ATTACHED A7 O SET READ AHEAD A8 O OOO READ(12) A8 GET MESSAGE(12) A9 SERVICE ACTION OUT(12) AA O OOO WRITE(12) AA SEND MESSAGE(12) AB SERVICE ACTION IN(12) AC O ERASE(12) AC O GET PERFORMANCE AD O READ DVD STRUCTURE AE O O O WRITE AND VERIFY(12) AF O OZO VERIFY(12) B0 ZZZ SEARCH DATA HIGH(12) B1 ZZZ SEARCH DATA EQUAL(12) B2 ZZZ SEARCH DATA LOW(12) B3 Z OZO SET LIMITS(12) B4 OO OZO READ ELEMENT STATUS ATTACHED B5 TRUSTED COMPUTING OUT [proposed] B5 O REQUEST VOLUME ELEMENT ADDRESS B6 O SEND VOLUME TAG B6 O SET STREAMING B7 O O READ DEFECT DATA(12) B8 O OZOM READ ELEMENT STATUS B9 O READ CD MSF BA O O OOMO REDUNDANCY GROUP (IN) BA O SCAN BB O O OOOO REDUNDANCY GROUP (OUT) BB O SET CD SPEED BC O O OOMO SPARE (IN) BD O O OOOO SPARE (OUT) BD O MECHANISM STATUS BE O O OOMO VOLUME SET (IN) BE O READ CD BF O O OOOO VOLUME SET (OUT) BF O SEND DVD STRUCTURE Product Sun StorageTek T3+ Array SCSI, Operational code, opcode, command list Previously Published As 81289 Change History Date: 2005-05-11 User Name: 97961 Action: Approved Comment: Publishing. No further edits required. Version: 4 Date: 2005-05-11 User Name: 97961 Action: Accept Comment: Version: 0 Date: 2005-05-10 User Name: 86700 Action: Approved Comment: I have reviewed the document and exchanged a few emails with the submitter on modifying some text and adding some new lines and I have made the changes which are agreeable to the submitter. Product_uuid 2a714b10-0a18-11d6-86e2-d56b387d4fbf|Sun StorageTek T3+ Array Attachments This solution has no attachment |
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