Dumping System Memory and Secondary Storage
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What is the Function of the DUMP Utility?
The DUMP utility saves the current state of the system's main memory and secondary storage to tape for later analysis. Perform a memory dump after a system failure or hang, for a recurring system problem, or when the system fails to boot properly. Have the tape analyzed by your Hewlett-Packard Representative or your Hewlett-Packard Response Center.
Using the DUMP Utility and Options
The DUMP utility has one basic option, SUBSET=ALL/MEMORY. Because START/NOSTART are also options, DUMP can use several START command options:
DUMP [SUBSET= { ALL [{ ;START
MEMORY }] ;NOSTART } [options]]
Where options are:
[{ ;RECOVERY [{ ;SINGLE-DISC
;NORECOVERY }] ;MULTI-DISC }]
[{ ;SINGLE-USER [{ ;SYSSTART
;MULTI-USER }] ;NOSYSSTART }]
To perform a complete memory dump, enter the DUMP command. The
SUBSET=ALL option is the default option and dumps both main
and virtual memory. The SUBSET=MEMORY option is required to dump main
memory contents
only.
Issuing the command DUMP without any options
ISL> DUMPis the same as specifying the following default options:
ISL> DUMP GROUP=CONFIG LOGON=OPERATOR.SYS MULTI-DISC &: MULTI-USER RECOVERY START SUBSET=ALL SYSSTARTThe DUMP command and its default options instruct the system to perform the following tasks if an autoboot file exists, the autoboot file is enabled, and the START option is specified:
Dump all memory and disk-based system data to tape.
Boot the system from disk after the dump is completed.
Boot with the configuration group CONFIG.SYS.
Log on in the user OPERATOR.SYS. (If there is no OPERATOR.SYS user, you will see the MPE prompt).
Allow access to all mounted volumes by all users.
Restart jobs that are intact.
Entering the DUMP Utility and Starting the System
A procedure for performing a dump and booting a system includes the following steps:
Mount a tape on the tape drive.
Soft reset the system using the access port method, boot from the primary path, and enter the DUMP command at the ISL prompt.
CAUTION: Do not issue the RS command from the console or push the RESET button on the front panel. Hard resetting the system initiates a destructive processor self-test that invalidates dump data.There will be a one- to two-second delay between typing TC and getting the message Processor Dependent Code (PDC) revision X.X. During this time no keys should be pressed on the console.
The system prompts for a user identification string and for the correct date and time shortly after receiving the DUMP command. The user can enter up to 80 characters, which can later be displayed by DAT when analyzing the dump. There is a 60-second timeout on this prompt. Once a key is pushed on the console keyboard, the timeout is aborted and a carriage return is required to continue with the dump. If a key is not pushed within 60 seconds, the prompt times out, and the dump proceeds with a blank user dump ID in the label. If the date and time are correct, press Return at the date prompt. If the date or the time are incorrect, respond as requested with the correct date and time in 24-hour format.
NOTE: If you have a 99X system, you must transfer to the service processor before you can soft reset the system.CM> SP
Example 3-7 Dumping the System
NOTE: The DUMP procedure shown in Example 3-7 was performed on an N-Class system. The procedure assumes that autoboot is enabled. Make necessary adjustments to the procedure if autoboot is disabled on your system. Sequences from other installations may vary.GSP> tc TC Execution of this command irrecoverably halts all system processing and I/O activity and restarts the computer system. Type Y to confirm your intention to restart the system: (Y/[N]) y y -> SPU hardware was successfully reset. GSP Host Name: csyprel18(csysas18) GSP> ********** VIRTUAL FRONT PANEL ********** System Boot detected ***************************************** LEDs: RUN ATTENTION FAULT REMOTE POWER ON FLASH OFF ON ON platform config 626F processor test 1142 processor test 1100 . . . memory config 7280 I/O test 8107 I/O test 8107 processor test 1142 platform test 612A I/O config 8238 ***************************************** ************* EARLY BOOT VFP ************ End of early boot detected ***************************************** Firmware Version 21.32 Duplex Console IO Dependent Code (IODC) revision 1 ------------------------------------------------------------------------------ (c) Copyright 1995-2000, Hewlett-Packard Company, All rights reserved ------------------------------------------------------------------------------ Processor Speed State CoProcessor State Cache Size Number State Inst Data --------- -------- --------------------- ----------------- ------------ 1 540 MHz Active Functional 512 KB 1MB 3 Unknown Stopped:Deconfigured Unknown 512 KB 1MB Central Bus Speed (in MHz) : 133 Available Memory : 2097152 KB Good Memory Required : Not initialized. Defaults to 32 MB. Primary boot path: 0/0/2/0.6 Alternate boot path: 0/0/1/0.6 Console path: 0/0/4/0.0 Keyboard path: 0/0/4/0.0 ---- Main Menu --------------------------------------------------------------- Command Description ------- ----------- BOot [PRI|ALT|<path>] Boot from specified path PAth [PRI|ALT] [<path>] Display or modify a path SEArch [DIsplay|IPL] [<path>] Search for boot devices COnfiguration menu Displays or sets boot values INformation menu Displays hardware information SERvice menu Displays service commands DIsplay Redisplay the current menu HElp [<menu>|<command>] Display help for menu or command RESET Restart the system ---- Main Menu: Enter command or menu > bo Interact with IPL (Y, N, or Cancel)?> y Booting... Boot IO Dependent Code (IODC) revision 1 SOFT Booted.MMSAVE Version 2.5 DUMPAREA found, save main memory to disc ISL loaded ISL Revision A.00.43 Apr 12, 2000 ISL> dump MPE/iX launch facility Scanning PCI BUS 0 ++*..++.......................... Scanning PCI BUS 8 ................................ Scanning PCI BUS 10 *................................ Scanning PCI BUS 20 *................................ Scanning PCI BUS 28 +............................... Scanning PCI BUS 40 ................................ Scanning PCI BUS 50 ................................ Scanning PCI BUS 60 *................................ Scanning PCI BUS 80 ................................ Scanning PCI BUS 90 ................................ Scanning PCI BUS A0 ................................ Scanning PCI BUS C0 +............................... Scanning PCI BUS D0 ................................ Scanning PCI BUS E0 ................................ MPE/XL Dump Version A.05.16 - initialization A subset main memory and system volume set dump was requested. Enter user identification string for this dump (80 chars or less): Initialize_genesis - Ver bld1: <<pci 2.1601>> FRI, JAN 18, 2002, 5:03:40 PM (y/n)? Initialize_genesis = Ready to configure I/O [CDM]8 8 0 18 Initialize memory manager completed. MPE/XL Dump Facility Version A.05.16 Performing dump to tape. adding permanent file to dump adding permanent file to dump Determine pre-compression size of secondary storage for ldev1 99 Megabytes of transient objects will be dumped for this device Tape compression enabled. 6250 BPI not supported on this tape drive 1600 BPI density set on tape drive tape is ready Begin dump of Processor Internal Memory. Processor Internal Memory dump complete. Begin dump of main memory. 177 Megabytes of main memory will be dumped ................................................................ Dump of memory save area complete. ................................................ ................................................................ Main memory dump complete. Begin dump of secondary storage for ldev1 adding permanent file to dump adding permanent file to dump 99 Megabytes of transient objects will be dumped for this device ................................................................ .................................... Secondary storage dump for ldev1 complete. Dump completed - autoboot in progress. ISL>
CAUTION: If your system has failed with a HPMC it is recommended that a system reset (RS command) be executed prior to restarting the system.Start the system. Enter the START command at the ISL prompt
ISL> START
and any desired options. Examples 3-5 and 3-6 and Appendix B Startup, Dump, and Shutdown Listings list the messages received at the console during a START.
ISL Summary
There are various options available with each utility, as shown below. These options may be entered in any order and must be separated by a blank or a semicolon. Keywords must be entered as shown.
START [;GROUP=cgn] [;LOGON=acct] [{ ;RECOVERY
;NORECOVERY }]
[{ ;SINGLE-DISC [{ ;SINGLE-USER
;MULTI-DISC }] ;MULTI-USER }]
[{ ;SYSSTART
;NOSYSSTART }]
When the START option of the UPDATE utility is selected,
the remaining options are available.
UPDATE [{ ;CONFIG [{ ;START;
;NOCONFIG }] ;NOSTART } [options] ]
where options are: [;LOGON=acct][GROUP=cgn]
[{ ;SINGLE-DISC [{ ;SINGLE-USER
;MULTI-DISC }] ;MULTI-USER }]
[{ ;SYSSTART
;NOSYSSTART }]
When the START option of the INSTALL utility is selected,
the remaining options are available.
INSTALL [{ ;START
;NOSTART } [options] ]
where options are: [;GROUP=cgn][LOGON=acct]
[{ ;SINGLE-DISC [{ ;SINGLE-USER
;MULTI-DISC }] ;MULTI-USER }]
[{ ;SYSSTART
;NOSYSSTART }]
When the START option of the DUMP utility is selected,
the remaining options are available.
DUMP [ SUBSET= { ALL [{ ;START
MEMORY }] ;NOSTART }[options] ]
Where options are:
[{ ;RECOVERY [{ ;SINGLE-DISC
;NORECOVERY }] ;MULTI-DISC }]
[{ ;SINGLE-USER [{ ;SYSSTART
;MULTI-USER }] ;NOSYSSTART }]
All available options are defined in Table 3-3
Utility Options.
Table 3-3 Utility Options
Options |
Functions |
|---|---|
| CONFIG or NOCONFIG Default: NOCONFIG |
During an UPDATE, this option specifies whether or not the configuration data files on disk (CONFIG group), are replaced by those on tape (CONFIG). If this option is not specified, the default is NOCONFIG |
| GROUP= configname Default: GROUP = CONFIG |
When the system is booted with NORECOVERY, the group specified after GROUP= is the source of configuration information. When performing an UPDATE, INSTALL, or DUMP, this group is only in effect if START is specified or defaulted. When a START command is entered, the group specified (or defaulted) for it overrides any previous specification. Since configuration groups reside in the SYS account, you do not specify the account name. |
| LOGON= accountname Default: LOGON= OPERATOR.SYS |
The logon account contains a standard logon. When the system is booted, the account specified after LOGON= is used to initiate a session. When SINGLE-USER has been specified, the account specified in LOGON= is used as the single user. If LOGON= is not specified on the command line, the logon defaults to OPERATOR.SYS (if the OPERATOR.SYS user has been created). |
| RECOVERY or NORECOVERY | During a START or an autoboot after a DUMP, this option indicates whether or not restartable jobs are restarted. On DUMP, this option is in effect only if START is specified or defaulted. If this option is not specified, the default is RECOVERY. Note on an INSTALL or UPDATE, jobs cannot be restarted, and the next START defaults to NORECOVERY. |
| Default: RECOVERY (except with START after INSTALL or UPDATE) | Use NORECOVERY if the system configuration has changed. If RECOVERY is specified and the system configuration has changed, the system recovers restartable jobs by using the previous system configuration and ignores the new system configuration and any GROUP= specification. |
| SINGLE-DISC or MULTI-DISC (Primarily Used for
Diagnostics) Default: MULTI-DISC |
This option determines whether or not the system initiates with all of the volumes mounted (MULTI-DISC) or only the system master volume mounted (SINGLE-DISC). If neither is specified, MULTI-DISC is the default. SINGLE-DISC can be specified only if SINGLE-USER has also been selected. If the SINGLE-DISC option is selected with MULTI-USER, the system issues a warning message and changes the SINGLE-DISC option to MULTI-DISC. If the START parameter is not specified or defaulted on an INSTALL, UPDATE, or DUMP, the SINGLE-DISC parameter is ignored. |
| SINGLE-USER or MULTI-USER (Primarily Used for
Diagnostics) Default: MULTI-USER |
This option boots the system with either single user capability or with multiuser capability and all configured terminals available. MULTI-USER is the default. SINGLE-USER is used primarily for diagnostic support. For the INSTALL, UPDATE, and DUMP utilities, the SINGLE-USER/MULTI-USER option is available only if START is specified or defaulted as an option. |
| START or NOSTART Default: START |
This option instructs UPDATE, INSTALL, or DUMP whether or not to autoboot (START) after the utility has completed its job. If neither START nor NOSTART is specified, START is the default. |
| SUBSET = ALL or SUBSET = MEMORY Default: SUBSET = ALL |
During a dump, this option indicates whether the contents of main memory alone or main memory and secondary storage is dumped to tape for later analysis. If the subset is not specified, it defaults to ALL (main memory and secondary storage). |
| SYSSTART or NOSYSSTART Default: SYSSTART |
On an INSTALL, UPDATE, START, or DUMP, this option determines whether or not the system startup file is used during the current boot. If neither SYSSTART nor NOSYSSTART is selected, SYSSTART (using the system startup file) is the default. If the START parameter is not specified or defaulted on an INSTALL, UPDATE, or DUMP, this parameter is ignored. |
MPE/iX Utility |
MPE/iX Function (When To Use) |
Spool file Recovery |
Permanent User Files |
|---|---|---|---|
| START or START RECOVERY | Starts system from disk. If RECOVERY is used immediately after changing system configuration, the system recovers restartable jobs by using the previous system configuration and ignores the new system configuration | Yes | Retained |
| START NORECOVERY | Starts system from disk. Use after changing system configuration. Use to recover from system hang or failure. | Yes output only | Retained |
| UPDATE or UPDATE NOCONFIG | Boots system from the SLT. Replaces system files on disk with those from SLT. System uses configuration files from disk. Use to update current version of operating system while maintaining current configuration. Use to recover from system hang or failure. | Yes output only | Retained |
| UPDATE CONFIG | Boots system from the SLT. Replaces system files with those on the SLT. Replaces the configuration files on disk (in the group CONFIG.SYS) with those from the SLT. | Yes output only | Retained |
| INSTALL or INSTALL START | Boots system from SLT. Replaces all system boot files and base system files on the system volume (LDEV 1) with the information on the SLT. Replaces configuration files with SLT defaults. Autoboots system after completing install. Use to install a version of the operating system or to recover from a disk crash or severe system failure. | No | Lost from system disks. User files remain on nonsystem volumes. |
| INSTALL NOSTART | Performs similarly to INSTALL or INSTALL START, but INSTALL NOSTART does not attempt to start the system after completing the install. | No | Lost from system disks. User files remain on nonsystem volumes. |
| DUMP | Boots system from disk. Stores current state of system main memory and optionally secondary memory to tape for later analysis. Use to analyze causes of system failure. | Yes output only | Retained |
|
Installing the Operating System |
Chapter 4 Using the System Generator (SYSGEN) |