System Log Record Formats
The rest of this chapter includes the format of the log records. Notes
following the log records describe the significant fields in the records.
Log failure record,type 100
Table 7-7. Log Record Heading Format
---------------------------------------------------------------------------------------------
| | |
| Length, | Record Content |
| in 16-bit | |
| Words | |
| | |
---------------------------------------------------------------------------------------------
| | |
| 1 | Record type (100) |
| | |
---------------------------------------------------------------------------------------------
| | |
| 1 | Record length |
| | |
---------------------------------------------------------------------------------------------
| | |
| 1 | Process identification number |
| | |
---------------------------------------------------------------------------------------------
| | |
| 3 | Time stamp |
| | |
---------------------------------------------------------------------------------------------
| | |
| 2 | Job type/job number |
| | |
---------------------------------------------------------------------------------------------
| | |
| 2 | Missing log records* |
| | |
---------------------------------------------------------------------------------------------
| | |
| 1 | Missing job initiations* |
| | |
---------------------------------------------------------------------------------------------
| | |
| 1 | Missing job terminations* |
| | |
---------------------------------------------------------------------------------------------
| | |
| 1 | Missing I/O records* |
| | |
---------------------------------------------------------------------------------------------
* Lost when system logging is suspended or disabled.
System up record,type 101
Table 7-8. System Up Record Format
---------------------------------------------------------------------------------------------
| | |
| Length, | Record Content |
| in 16-bit | |
| Words | |
| | |
---------------------------------------------------------------------------------------------
| | |
| 1 | Record type (101) |
| | |
---------------------------------------------------------------------------------------------
| | |
| 1 | Record length |
| | |
---------------------------------------------------------------------------------------------
| | |
| 1 | Process identification number |
| | |
---------------------------------------------------------------------------------------------
| | |
| 3 | Time stamp |
| | |
---------------------------------------------------------------------------------------------
| | |
| 2 | Job type/job number |
| | |
---------------------------------------------------------------------------------------------
| | |
| 4 | Version ID (v.uu.ff)/Last 8 bits unused |
| | |
---------------------------------------------------------------------------------------------
| | |
| 2 | Maximum number of concurrent jobs and |
| | sessions |
| | |
---------------------------------------------------------------------------------------------
| | |
| 2 | Boot code |
| | |
---------------------------------------------------------------------------------------------
| | |
| 16 | Boot device |
| | |
---------------------------------------------------------------------------------------------
| | |
| 16 | Configuration group used for boot |
| | |
---------------------------------------------------------------------------------------------
| | |
| 2 | NL checksum |
| | |
---------------------------------------------------------------------------------------------
| | |
| 2 | Config checksum |
| | |
---------------------------------------------------------------------------------------------
| | |
| 2 | SL checksum |
| | |
---------------------------------------------------------------------------------------------
| | |
| 128 | Operating system nonvolatile storage |
| | |
---------------------------------------------------------------------------------------------
NOTES:
Boot code:
0 = Start with recovery.
1 = Start with no recovery.
2 = Update with a configuration change.
3 = Update without a configuration change.
4 = Install (new operating system loaded).
Configuration group used for boot (ASCII)
Name of group containing configuration data files used when START was
invoked.
The NL, Config, and SL checksums fields are set to 0.
Operating system nonvolatile storage contains the following:
Table 7-9. ISL Data for Last Boot (128 bytes)
Reserved 36 bytes
Boot path 32 bytes
ISL revision 4 bytes
Time stamp (# seconds since 1970) 4 bytes
LIF utility entries entered 48 bytes
Pointer to last utility 1 byte
Word alignment 3 bytes
Table 7-10. MPE/iX Operating System System-Dependent Data
(128 bytes)
Time stamp (# seconds since 1970) 4 bytes
# microseconds since last second 4 bytes
GR2 (caller's PC) 4 bytes
MPE/iX status: 4 bytes
For system abort, this contains failure number:
(1) Error (2 bytes)
(2) Subsystem (2 bytes)
MPE/iX version (vv.uu.ff) 8 bytes
Message string (if any)* 64 bytes
Halt number 2 bytes
Lockup error code 2 bytes
Reserved 36 bytes
*Identifies entity logging this entry (abort or shutdown).
Boot Device
Indicates the primary boot path, as follows:
Word 1:
Bits (0:8) Flags
(8:8) Bus Converter 0
Word 2:
Bits (0:8) Bus Converter 1
(8:8) Bus Converter 2
Word 3:
Bits (0:8) Bus Converter 3
(8:8) Bus Converter 4
Word 4:
Bits (0:8) Bus Converter 5
(8:8) Physical Module
Words 5 and 6: Logical Module
Words 7-16: Device-dependent
Job initiation record, type 102
Table 7-11. Job Initiation Record Format
---------------------------------------------------------------------------------------------
| | |
| Length, | Record Content |
| in 16-bit | |
| Words | |
| | |
---------------------------------------------------------------------------------------------
| | |
| 1 | Record type (102) |
| | |
---------------------------------------------------------------------------------------------
| | |
| 1 | Record length |
| | |
---------------------------------------------------------------------------------------------
| | |
| 1 | Process identification number |
| | |
---------------------------------------------------------------------------------------------
| | |
| 3 | Time stamp |
| | |
---------------------------------------------------------------------------------------------
| | |
| 2 | Job type/job number |
| | |
---------------------------------------------------------------------------------------------
| | |
| 8 | Job name |
| | |
---------------------------------------------------------------------------------------------
| | |
| 8 | User name |
| | |
---------------------------------------------------------------------------------------------
| | |
| 8 | Home group name |
| | |
---------------------------------------------------------------------------------------------
| | |
| 8 | Account name |
| | |
---------------------------------------------------------------------------------------------
| | |
| 8 | Logon group name |
| | |
---------------------------------------------------------------------------------------------
| | |
| 1 | Input logical device number |
| | |
---------------------------------------------------------------------------------------------
| | |
| 1 | Output logical device number |
| | |
---------------------------------------------------------------------------------------------
| | |
| 1 | Reserved (bits 0-7)/Logon queue (bits 8-15) |
| | |
---------------------------------------------------------------------------------------------
| | |
| 2 | CPU time limit |
| | |
---------------------------------------------------------------------------------------------
| | |
| 1 | Inpri (bits 0-7)/Outpri (bits 8-15) |
| | |
---------------------------------------------------------------------------------------------
| | |
| 8 | CI program name |
| | |
---------------------------------------------------------------------------------------------
| | |
| 8 | CI program group name |
| | |
---------------------------------------------------------------------------------------------
| | |
| 8 | CI program account name |
| | |
---------------------------------------------------------------------------------------------
| | |
| 2 | MPE/iX logon status |
| | |
---------------------------------------------------------------------------------------------
NOTES:
Logon queue.
Execution queue the job will run on.
CPU time limit.
CPU time limit (in number of seconds) given by user on JOB or
HELLO command, as follows:
0 = not given
# = number given
MPE/iX status.
If failure occurred during job initiation, the MPE/iX status
indicates an error. This field can be any MPE/iX status from the
OS. If successful, value is zero.
Unlike MPE V, unsuccessful logon attempts are logged in MPE/iX
system logging.
Job termination record, type 103
Table 7-12. Job Termination Record Format
---------------------------------------------------------------------------------------------
| | |
| Length, | Record Content |
| in 16-bit | |
| Words | |
| | |
---------------------------------------------------------------------------------------------
| | |
| 1 | Record type (103) |
| | |
---------------------------------------------------------------------------------------------
| | |
| 1 | Record length |
| | |
---------------------------------------------------------------------------------------------
| | |
| 1 | Process identification number |
| | |
---------------------------------------------------------------------------------------------
| | |
| 3 | Time stamp |
| | |
---------------------------------------------------------------------------------------------
| | |
| 2 | Job type/job number |
| | |
---------------------------------------------------------------------------------------------
| | |
| 1 | Maximum priority |
| | |
---------------------------------------------------------------------------------------------
| | |
| 1 | Number of creations |
| | |
---------------------------------------------------------------------------------------------
| | |
| 2 | CPU time in seconds |
| | |
---------------------------------------------------------------------------------------------
| | |
| 2 | Connect time |
| | |
---------------------------------------------------------------------------------------------
Process termination record, type 104
Table 7-13. Process Termination Record Format
---------------------------------------------------------------------------------------------
| | |
| Length, | Record Content |
| in 16-bit | |
| Words | |
| | |
---------------------------------------------------------------------------------------------
| | |
| 1 | Record type (104) |
| | |
---------------------------------------------------------------------------------------------
| | |
| 1 | Record length |
| | |
---------------------------------------------------------------------------------------------
| | |
| 1 | Process identification number |
| | |
---------------------------------------------------------------------------------------------
| | |
| 3 | Time stamp |
| | |
---------------------------------------------------------------------------------------------
| | |
| 2 | Job type/job number |
| | |
---------------------------------------------------------------------------------------------
| | |
| 2 | CPU time in milliseconds |
| | |
---------------------------------------------------------------------------------------------
| | |
| 2 | Native mode stack size in bytes |
| | |
---------------------------------------------------------------------------------------------
| | |
| 2 | Native mode heap size in bytes |
| | |
---------------------------------------------------------------------------------------------
| | |
| 1 | CM mas stack in 16-bit words |
| | |
---------------------------------------------------------------------------------------------
| | |
| 1 | Termination type |
| | |
---------------------------------------------------------------------------------------------
| | |
| 8 | Reserved |
| | |
---------------------------------------------------------------------------------------------
NOTES:
Termination types:
0 = Normal
1 = Dependency (This process depends upon a terminated process.)
2 = Killed (This process was terminated by another using KILL.)
3 = Quit (This process called the QUIT intrinsic.)
4 = Quitprog (This process called the QUITPROG intrinsic.)
5 = Softfault (This process terminated due to a fault.)
NM File close record, type 105
Table 7-14. File Close Record Format
---------------------------------------------------------------------------------------------
| | |
| Length, | Record Content |
| in 16-bit | |
| Words | |
| | |
---------------------------------------------------------------------------------------------
| | |
| 1 | Record type (105) |
| | |
---------------------------------------------------------------------------------------------
| | |
| 1 | Record length |
| | |
---------------------------------------------------------------------------------------------
| | |
| 1 | Process identification number |
| | |
---------------------------------------------------------------------------------------------
| | |
| 3 | Time stamp |
| | |
---------------------------------------------------------------------------------------------
| | |
| 2 | Job type/job number |
| | |
---------------------------------------------------------------------------------------------
| | |
| 4 | Number of logical reads |
| | |
---------------------------------------------------------------------------------------------
| | |
| 4 | Number of byes read |
| | |
---------------------------------------------------------------------------------------------
| | |
| 4 | Number of logical writes |
| | |
---------------------------------------------------------------------------------------------
| | |
| 4 | Number of bytes written |
| | |
---------------------------------------------------------------------------------------------
| | |
| 8 | File name |
| | |
---------------------------------------------------------------------------------------------
| | |
| 8 | Group name |
| | |
---------------------------------------------------------------------------------------------
| | |
| 8 | Account name |
| | |
---------------------------------------------------------------------------------------------
| | |
| 8 | Creator name |
| | |
---------------------------------------------------------------------------------------------
| | |
| 8 | User name |
| | |
---------------------------------------------------------------------------------------------
| | |
| 8 | User group |
| | |
---------------------------------------------------------------------------------------------
| | |
| 8 | User account |
| | |
---------------------------------------------------------------------------------------------
| | |
| 10 | Unique file identifier (UFID) |
| | |
---------------------------------------------------------------------------------------------
| | |
| 2 | Reserved |
| | |
---------------------------------------------------------------------------------------------
| | |
| 2 | Close disposition |
| | |
---------------------------------------------------------------------------------------------
| | |
| 2 | Open domain |
| | |
---------------------------------------------------------------------------------------------
| | |
| 2 | File size in bytes |
| | |
---------------------------------------------------------------------------------------------
| | |
| 4 | File open count |
| | |
---------------------------------------------------------------------------------------------
NM File close record, type 205
The type 205 record has a "maximum path exceeded" flag.
The LDEV number of a file is also included in the log record. In most
cases thi s is the LDEV number of the file's label and initial extent
since files are not usually restricted to one volume.
Table 7-15 illustrates the format of the type 205 record.
Table 7-15. Record Type 205
---------------------------------------------------------------------------------------------
| | |
| Length, | Record Content |
| in 16-bit | |
| Words | |
| | |
---------------------------------------------------------------------------------------------
| | |
| 1 | Record type 205 |
| | |
---------------------------------------------------------------------------------------------
| | |
| 1 | Event version |
| | |
---------------------------------------------------------------------------------------------
| | |
| 1 | Record length |
| | |
---------------------------------------------------------------------------------------------
| | |
| 1 | PIN |
| | |
---------------------------------------------------------------------------------------------
| | |
| 2 | Job type/Job number |
| | |
---------------------------------------------------------------------------------------------
| | |
| 2 | Time stamp time |
| | |
---------------------------------------------------------------------------------------------
| | |
| 1 | Time stamp date |
| | |
---------------------------------------------------------------------------------------------
| | |
| 1 | Login type (if 1, logon name is in the |
| | format 16-byte user 16-byte acct) |
| | |
---------------------------------------------------------------------------------------------
| | |
| 18 | Logon name |
| | |
---------------------------------------------------------------------------------------------
| | |
| 8 | Job/session name |
| | |
---------------------------------------------------------------------------------------------
| | |
| 4 | Reserved |
| | |
---------------------------------------------------------------------------------------------
| | |
| 4 | # logical reads |
| | |
---------------------------------------------------------------------------------------------
| | |
| 4 | # bytes read |
| | |
---------------------------------------------------------------------------------------------
| | |
| 4 | # logical writes |
| | |
---------------------------------------------------------------------------------------------
| | |
| 4 | # bytes written |
| | |
---------------------------------------------------------------------------------------------
| | |
| 8 | Creator user name (from flabel: user.acct |
| | for new files) |
| | |
---------------------------------------------------------------------------------------------
| | |
| 10 | UFID |
| | |
---------------------------------------------------------------------------------------------
| | |
| 2 | Close disposition |
| | |
---------------------------------------------------------------------------------------------
| | |
| 2 | Open domain |
| | |
---------------------------------------------------------------------------------------------
| | |
| 2 | File size |
| | |
---------------------------------------------------------------------------------------------
| | |
| 2 | File number |
| | |
---------------------------------------------------------------------------------------------
| | |
| 4 | File open count |
| | |
---------------------------------------------------------------------------------------------
| | |
| 4 | Number records read |
| | |
---------------------------------------------------------------------------------------------
| | |
| 4 | Number records written |
| | |
---------------------------------------------------------------------------------------------
| | |
| 1 | File LDEV # |
| | |
---------------------------------------------------------------------------------------------
| | |
| 1 | "Maximum path exceeded" flag (true if full |
| | path not recordable ) |
| | |
---------------------------------------------------------------------------------------------
| | |
| ## | Variable-length name buffer (file name |
| | terminated with a 0 ) |
| | |
---------------------------------------------------------------------------------------------
NOTES:
Unique file identifier (UFID).
Internal file identifier. Internal data structure that uniquely
identifies a file. This entity is printed in hex.
Disposition field.
Close Disposition (bits 13:3) Open Domain
0 No change. 0 New file.
1 Save permanent. 1 Old permanent file.
2 Save temporary - rewound. 2 Old temporary file.
3 Save temp - not rewound. 3 Old job or sys.
4 Delete.
5 Make temporary.
Disk Space Disposition (bits 11:2)
0 Do not return disk space allocated beyond EOF.
1 Return disk space allocated beyond EOF to system; EOF becomes file
limit.
2 Return disk space allocated beyond EOF to system; file limit remains
the same (NM file types only).
The Disposition field in an NM file close record can have values from
0-9, 8-13, and 16-21. The number 255 is also a valid value for the
Disposition field. Any files left open during process termination are
closed by the system and given a disposition of 255.
Shutdown record, type 106
Table 7-16. Shutdown Record Format
---------------------------------------------------------------------------------------------
| | |
| Length, | Record Content |
| in 16-bit | |
| Words | |
| | |
---------------------------------------------------------------------------------------------
| | |
| 1 | Record type (106) |
| | |
---------------------------------------------------------------------------------------------
| | |
| 1 | Record length |
| | |
---------------------------------------------------------------------------------------------
| | |
| 1 | Process identification number |
| | |
---------------------------------------------------------------------------------------------
| | |
| 3 | Time stamp |
| | |
---------------------------------------------------------------------------------------------
| | |
| 2 | Job type/job number |
| | |
---------------------------------------------------------------------------------------------
| | |
| 1 | Number of jobs |
| | |
---------------------------------------------------------------------------------------------
| | |
| 1 | Number of sessions |
| | |
---------------------------------------------------------------------------------------------
Power failure record, type 107
Power Failure Record Format
---------------------------------------------------------------------------------------------
| | |
| Length, | Record Content |
| in 16-bit | |
| Words | |
| | |
---------------------------------------------------------------------------------------------
| | |
| 1 | Record type (107) |
| | |
---------------------------------------------------------------------------------------------
| | |
| 1 | Record length |
| | |
---------------------------------------------------------------------------------------------
| | |
| 1 | Process identification number |
| | |
---------------------------------------------------------------------------------------------
| | |
| 3 | Time stamp |
| | |
---------------------------------------------------------------------------------------------
| | |
| 2 | Job type/job number |
| | |
---------------------------------------------------------------------------------------------
I/O error record,type 111
Table 7-17. I/O Error Record Format
--------------------------------------------------------------------------------------------
| | |
| Length, | Record Content |
| in 16-bit | |
| Words | |
| | |
--------------------------------------------------------------------------------------------
| | |
| 1 | Record type (111) |
| | |
--------------------------------------------------------------------------------------------
| | |
| 1 | Record length |
| | |
--------------------------------------------------------------------------------------------
| | |
| 1 | Process identification number |
| | |
--------------------------------------------------------------------------------------------
| | |
| 3 | Time stamp |
| | |
--------------------------------------------------------------------------------------------
| | |
| 2 | Job type/job number |
| | |
--------------------------------------------------------------------------------------------
| | |
| 20 | Hardware product number |
| | |
--------------------------------------------------------------------------------------------
| | |
| 20 | Physical path description |
| | |
--------------------------------------------------------------------------------------------
| | |
| 20 | Logical device name |
| | |
--------------------------------------------------------------------------------------------
| | |
| 1 | Device class identifier |
| | |
--------------------------------------------------------------------------------------------
| | |
| 1 | Diagnostic message class (bits 0-7)/Not used (bits 8-15) |
| | |
--------------------------------------------------------------------------------------------
| | |
| 2 | I/O manager status |
| | |
--------------------------------------------------------------------------------------------
| | |
| 1 | Reserved (bits 0-6) LAR (bit 7)/\Reserved (bits 8-14) RA (bit |
| | 15) |
| | |
--------------------------------------------------------------------------------------------
| | |
| 1 | Reserved (bits 0-6) IW (bit 7)/\Reserved (bits 8-14) AD (bit 15) |
| | |
--------------------------------------------------------------------------------------------
| | |
| 1 | Retry count |
| | |
--------------------------------------------------------------------------------------------
| | |
| 1 | Reserved |
| | |
--------------------------------------------------------------------------------------------
| | |
| 2 | I/O manager port number |
| | |
--------------------------------------------------------------------------------------------
| | |
| 2 | Transaction number |
| | |
--------------------------------------------------------------------------------------------
| | |
| 1 | Hardware status length |
| | |
--------------------------------------------------------------------------------------------
| | |
| 1 | Not used |
| | |
--------------------------------------------------------------------------------------------
| | |
| 20 | Hardware status |
| | |
--------------------------------------------------------------------------------------------
| | |
| 1 | Length of I/O manager data |
| | |
--------------------------------------------------------------------------------------------
| | |
| 1 | ID of I/O manager |
| | |
--------------------------------------------------------------------------------------------
| | |
| 36 | I/O manager-specific data |
| | |
--------------------------------------------------------------------------------------------
NOTES:
Hardware product number is the number of the device; for example, 7935.
Physical path description is the hardware path to the device; for
example, 2/4.0.1 (2 = bus, 4 = channel, 0 = device adapter, and 1 =
device). It is hardware dependent.
Logical device name is the LDEV number.
Device class identifier identifies the type of device, such as disk, tape
drive, or printer.
Diagnostic message class specifies the reason for logging this error:
0 = Hardware event
1 = Software event
2 = Other
I/O manager status is the LLIO status from the driver. It gives the
reason for the I/O error.
LAR = Log all retries requested by I/O manager
RA = Retry again - I/O manager attempts retry
IW = I/O worked - Retry was successful
AD = Auto-diagnostic requested by I/O manager
Retry count varies depending on the value of LAR. If LAR is true, then
the retry count is the number for the nth retry. If LAR is false, it is
the number of retries performed.
I/O manager port number is the IPC port number of the device manager. It
is usually a negative number.
Transaction number is the number of the I/O request.
Hardware status length specifies how much of the hardware status field
contains valid data.
Hardware status contains status bytes from the device. The field may
contain up to 40 bytes of error information. The information is device
dependent.
Length of I/O manager data specifies how much of the I/O manager specific
data field contains valid data.
ID of I/O manager is the subsystem number.
I/O manager specific data is driver-specific data that relates to the I/O
error. It can contain up to 72 bytes of information.
Physical mount/dismount record, type 112
Table 7-18. Physical Mount/Dismount Format
---------------------------------------------------------------------------------------------
| | |
| Length, | Record Content |
| in 16-bit | |
| Words | |
| | |
---------------------------------------------------------------------------------------------
| | |
| 1 | Record type (112) |
| | |
---------------------------------------------------------------------------------------------
| | |
| 1 | Record length |
| | |
---------------------------------------------------------------------------------------------
| | |
| 1 | Process identification number |
| | |
---------------------------------------------------------------------------------------------
| | |
| 3 | Time stamp |
| | |
---------------------------------------------------------------------------------------------
| | |
| 2 | Job type/job number |
| | |
---------------------------------------------------------------------------------------------
| | |
| 1 | Mount/Dismount type |
| | |
---------------------------------------------------------------------------------------------
| | |
| 1 | Volume type |
| | |
---------------------------------------------------------------------------------------------
| | |
| 2 | Logical device number |
| | |
---------------------------------------------------------------------------------------------
| | |
| 1 | MV table ID (bits 0-5)/Not used (6-15) |
| | |
---------------------------------------------------------------------------------------------
| | |
| 1 | Vol ID (bits 0-7)/Not used (8-15) |
| | |
---------------------------------------------------------------------------------------------
| | |
| 2 | Volume identification |
| | |
---------------------------------------------------------------------------------------------
| | |
| 8 | Volume name |
| | |
---------------------------------------------------------------------------------------------
| | |
| 16 | Volume set name |
| | |
---------------------------------------------------------------------------------------------
NOTES:
Mount/Dismount Values Log Volume Types
0 = Device- or user-initiated mount 1 = Master volume
1 = Device-initiated dismount 3 = Loner volume
6 = Scratch volume
7 = Unknown volume
Logical mount/dismount record, type 113
Table 7-19. Logical Mount/Dismount Record Format
---------------------------------------------------------------------------------------------
| | |
| Length, | Record Content |
| in 16-bit | |
| Words | |
| | |
---------------------------------------------------------------------------------------------
| | |
| 1 | Record type (113) |
| | |
---------------------------------------------------------------------------------------------
| | |
| 1 | Record length |
| | |
---------------------------------------------------------------------------------------------
| | |
| 1 | Process identification number |
| | |
---------------------------------------------------------------------------------------------
| | |
| 3 | Time stamp |
| | |
---------------------------------------------------------------------------------------------
| | |
| 2 | Job type/job number |
| | |
---------------------------------------------------------------------------------------------
| | |
| 1 | Mount/Dismount |
| | |
---------------------------------------------------------------------------------------------
| | |
| 1 | Request type |
| | |
---------------------------------------------------------------------------------------------
| | |
| 8 | User name |
| | |
---------------------------------------------------------------------------------------------
| | |
| 8 | Group name |
| | |
---------------------------------------------------------------------------------------------
| | |
| 8 | Account name |
| | |
---------------------------------------------------------------------------------------------
| | |
| 16 | Volume set name |
| | |
---------------------------------------------------------------------------------------------
| | |
| 1 | Number of volumes in set |
| | |
---------------------------------------------------------------------------------------------
| | |
| 1 | Logical device of first volume |
| | |
---------------------------------------------------------------------------------------------
| | |
| 1 | Logical device of next volume |
| | |
---------------------------------------------------------------------------------------------
| | |
| 1 | Logical device of next volume |
| | |
---------------------------------------------------------------------------------------------
| | |
| 1 | Logical device of next volume |
| | |
---------------------------------------------------------------------------------------------
| | |
| 1 | Logical device of next volume |
| | |
---------------------------------------------------------------------------------------------
| | |
| 1 | Logical device of next volume |
| | |
---------------------------------------------------------------------------------------------
| | |
| 1 | Logical device of next volume |
| | |
---------------------------------------------------------------------------------------------
| | |
| 1 | Logical device of next volume |
| | |
---------------------------------------------------------------------------------------------
NOTES:
Mount/Dismount Request Types
0 = Logical mount 0 = User
1 = Logical dismount 1 = Operator