JP2921480B2 - Method of starting maintenance mode in computer system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a start-up method in a computer system, and more particularly, to a maintenance method in a computer system suitable for performing an operation using different system parameters between a user job operation and a maintenance operation. Mode startup method.

[0002]

2. Description of the Related Art An electronic computer system is defined by a hardware configuration and a software configuration. If the hardware configuration is the same but the software configuration is different, the computer system has a different system configuration. Further, the software configuration is different even for the same OS (operating system) if a series of system parameters that define its management function, control function, and the like are different. The present invention relates to a technique for changing such system parameters to contents suitable for user business operation and contents suitable for maintenance operation.

Various system parameters such as control constant values for virtual storage management, maximum number of job schedules and response classes for a scheduler, designation of own host ID, designation of a resident volume medium name, etc. Exists. When a user's business is operated, the system is operated with system parameters having contents suitable for the user's business. On the other hand, at the time of system maintenance operation such as application of a standard correction for correcting the system release data or maintenance at the time of hardware failure, system parameters having contents suitable for the maintenance work are used. Among the system parameters used during the maintenance work, there are those that are different from those at the time of user job operation, and those that must be matched to the contrary.

[0004] For example, the host ID is linked to other parameters, and if an incorrect definition is made, the system may not be able to start up. Therefore, the system parameter $ SYSTEM HOSTID = n for specifying the host ID is used.
n needs to be the same between the system parameter for user work and the system parameter for maintenance work. Also, if the medium name of the resident volume is incorrect, the OS may not operate properly. Therefore, the system parameter “ISLPARM” that specifies the medium name of the resident volume is used.
RVOL = (medium name, medium name,...) Also needs to match the system parameter for user work and the system parameter for maintenance work.

On the other hand, in the operation of the user's job, the system parameter $ CONSO related to the automatic execution cataloging command is set so that the job is automatically started when the system is started.
LECONn is often set, but this makes maintenance difficult. Therefore, it is necessary to set the system parameter $ CONSOLE CONSn to NO so as not to issue an automatic execution cataloging command at system startup. Also, in the operation of the user task, the system parameter ￥ JOBCLASS B = (JOBCPTM =
...), etc., the CPU use limit time for each job class is given. However, it is conceivable that the maintenance work job cannot be executed with the user set CPU use limit time.
To make the CPU usage limit time for each job class unlimited, use the system parameter $ JOBCLASS.
It is necessary to change to B = (JOBCPTM = NOLIM ...) or the like.

[0006] As described above, since system parameters need to be properly used for user operation and maintenance operation,
Conventionally, the following method has been adopted.

(1) Processing at the time of system generation Generally, system generation (system generator)
In on), the system parameter registration operation for registering the above-described system parameters is performed as a part thereof.
Conventionally, at the time of parameter registration work in this system generation work, as shown in FIG. 4, the OS is statically stored by the system parameter registration means 2 by the user business system parameter definitions 1-1 and 1-2 suitable for the user business operation. (Hereinafter, referred to as a SYS.SYSTEM file) 3 includes a user business system parameter 4-
1, 4-2, and the system parameter definitions 14-1, 14-2 for maintenance work prepared for each of the user business system parameter definitions 1-1, 1-2 by the system parameter registration means 2 in SYS. . SYS
System parameter 4- for maintenance work in TEM file 3
Register as 3, 4-4.

Here, the plurality of sets of user business system parameters 4-1 and 4-2 are registered in such a manner that, in a system start-up operation to be described later, the system start-up is performed using an arbitrary set of system parameters. This is to make it possible. In addition, the system parameter for maintenance work 4-
The reason for registering 3, 4-4 is that, as described above, some of the system parameters used during the maintenance work are different from those used during the operation of the user's job, and the other must be matched. This is because there is.

(2) Processing at System Start-up Generally, system start-up (start-up or
system initialization) is the OS
To SYS. This refers to the work from loading the SYSTEM file 3 to the main storage (memory) until the start of a general job is possible. Conventionally, when starting this system,
By specifying a set of system parameters to be used, it is possible to determine whether to start operation using system parameters suitable for user business operation or to start operation using system parameters suitable for maintenance operation.

That is, when a REST command is input from the console 15, the system initial loading means 6
YS. The core of the OS in the SYSTEM file 3 is expanded in a memory (main storage) 13 to generate various OS functions 12 and the like. All sets of system parameters 4-1 to 4-4 in the SYSTEM file 3 are loaded into the memory 13 as system parameters 7-1 to 7-4. Thereafter, when the user business operation is started, if the user business system parameter 7-1 or 7-2 is selected by the command PARM from the console 15, the system initial loading means 6 will execute the user business operation specified by the PARM command. System parameters 7-1 or 7-2
Is copied to the system parameter table 10. O
S Various functions 12 are stored in the system parameter table 1
Therefore, the various functions 12 of the OS are operated according to the contents of the user business system parameters specified by the PARM command.

On the other hand, for example, when a hardware failure or the like occurs during the operation of the user business based on the system parameter 7-1 for the user business, the maintenance is to be performed. When the maintenance work system parameter 7-3 corresponding to 7-1 is selected, the system initial loading means 6
Stores the maintenance work system parameters 7-3 specified by the PARM command in the system parameter table 10
Copy to Therefore, the OS various functions 12 operate in accordance with the contents of the maintenance work system parameter 7-3, and the maintenance work becomes possible.

Note that SYS. A method of registering a plurality of sets of system parameters in the SYSTEM file 3 in advance and selecting an arbitrary set of system parameters at system startup to operate the system is described in, for example, JP-A-63-172338. It has been disclosed.

[0013]

Conventionally, as described above, the system parameters are switched between the operation of the user's job and the operation of the maintenance operation, so that there are the following problems.

At the time of system generation, a system parameter definition for maintenance work is prepared separately from the system parameter definition for user work, and the system parameter for maintenance work based on this is defined as SYS. Since it is necessary to register in the SYSTEM file, the number of man-hours increases and a work error is induced. In addition, since system parameters for maintenance work are also registered, S
YS. It is easy to cause pressure on the SYSTEM file.

As described above, some of the maintenance operation system parameters need to have the same contents as the user operation system parameters. Therefore, when the user operation system parameters are changed, the maintenance operation is performed in accordance with the change. In some cases, the working system parameters must also be changed. However, since the system parameters for maintenance work are parameters that are not used at all in normal times, it is often easy to forget to re-register. For this reason, it often happens that a maintenance work is performed without re-registration and a problem occurs.

In a cluster-attached computer system in which a plurality of hosts are connected via an interconnection network, system parameters must be defined for each user in each of the hosts. A system parameter definition is prepared and a SYS. SYS
It is necessary to register in the TEM file, and to change the corresponding system parameter for maintenance work according to the change of the system parameter for user work of each host. Increased and SYS. This causes compression of the SYSTEM file.

The present invention has been proposed in view of the above circumstances, and an object of the present invention is to enable a system for maintenance work to dynamically generate system parameters for maintenance work from system parameters for user work. Parameter S
YS. An object of the present invention is to relieve the operator from the pre-registration work in the SYSTEM file and the maintenance work system parameter change work accompanying the user business system parameter change.

[0018]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides an electronic computer system in which various functions of an OS during system operation are defined by a series of system parameters registered in a system parameter table. In the maintenance mode start-up method, the contents of the file holding the OS core, the user business system parameters, and the system parameter update information that determines the update location and update contents of the system parameter table are loaded into the main memory, and the start-up mode is set. Setting the startup mode storage table in the main memory; registering the user business system parameters loaded in the main memory in the system parameter table; and referring to the startup mode storage table to maintain the startup mode. In mode , Based on the system parameters updated information loaded into the main memory, characterized in that it comprises a step of changing the system parameters that are registered in the system parameter table to the system parameters for maintenance.

Further, according to the present invention, a host in which various functions and the like of an OS during system operation are defined by a series of system parameters registered in a system parameter table,
In a maintenance mode start-up method for a cluster-connected computer system in which a plurality of computers are connected via an interconnection network, a system for determining an updated location and updated contents of a system parameter for a user's business in each of an OS core and each host and a system parameter table. Loading the contents of the file holding the parameter update information into the main memory of each host and setting the boot mode in the boot mode storage table of the main memory of each host; Registering the created user business system parameters for the host in the system parameter table of the host, and in each host, refer to the startup mode storage table on the main memory,
Changing the system parameters registered in the system parameter table of the host to system parameters for maintenance work based on the system parameter update information loaded in the main memory when the start-up mode is the maintenance mode. It is characterized by.

Further, according to the present invention, when a command for instructing start-up at the time of maintenance is input from the console at the start-up of the system, the fact that the start-up mode is the maintenance mode is set in the start-up mode storage table. It is characterized by.

[0021]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a diagram showing an example of a configuration of a main part of an electronic computer system to which the present invention is applied and a data flow.
1, 1-2 are user business system parameter definitions, 2
Is a system parameter registration means, and 3 is a SYS. SYSTEM file, 4 is a set of user business system parameter sets, 4-1 and 4-1 are user business system parameters of each set, 5 is system parameter update information, 6 is system initial loading means, 7 is A set of user business system parameter sets,
Reference numerals 7-1 and 7-2 denote system parameter for user business of each set, 8 denotes system parameter update information, 9 denotes a startup mode storage table, 10 denotes a system parameter table, 11 denotes a system parameter table updating means, and 12 denotes a system parameter table updating means. OS various functions, 13 is a memory (main memory), 1
5 is a console.

In this embodiment, SYS. SYSTE
The M-file 3 incorporates the system parameter update information 5 as one of the information provided by the OS. The system parameter update information 5 is information in which the update location and the update content of the system parameter table 10 are defined in an object format, and is loaded as system parameter update information 8 into the memory 13 at system startup, as described later. This system parameter update information 8 (5)
Is the position information 8-1 and the size information 8 as shown in FIG.
-2 and an update value 8-3 are provided for each update location in the system parameter table 10. The position information 8-1 of each entry indicates an update position (for example, a relative address from the head of the table) of the system parameter table 10, the size information 8-2 indicates the size of the update position, and the update value 8-3 indicates the position information. A value to be updated from the position 8-1 to the update location corresponding to the size of the size information 8-2, that is, a value written to the update location by the system parameter table updating unit 11 is shown.

Note that SYS. Although not shown, the core part of the OS is statically stored in the SYSTEM file 3. The OS core part includes a part corresponding to the system parameter table updating means 11 in addition to the OS various functions 12. Also included are the framework of the system parameter table 10 and the framework of the startup mode storage table 9 and their initial values (non-maintenance mode).

The procedure of the maintenance mode starting method in the computer system according to the present embodiment will be described below, including the stage when the system is generated.

(1) Processing at the time of system creation At the time of parameter registration work in the system creation work, as shown in FIG. By means 2, SYS. In the SYSTEM file 3, the user business system parameters 4-1 and 4-
Register as 2. Unlike FIG. 4, the registration work by the maintenance work system parameter definition is unnecessary.

Here, a plurality of sets of user business system parameters 4-1 and 4-2 are registered in the system start-up work to be described later by an arbitrary set of user business system parameters. This is to enable startup.

(2) Processing at system startup

When the computer system is started for maintenance work, an RSET command, a RARM command specifying system parameters to be used, and an MNTN command for instructing start-up during maintenance are input from the console 15. .

When a REST command is input from the console 15, the system initial loading means 6 causes the SYS. S
The contents of the YSTEM file 3 are loaded into the memory 13. That is, by expanding the core of the OS in the memory (main memory) 13, the OS various functions 12 are generated and the system parameter table updating means 11 is generated.
An initial state of the framework of the system parameter table 10 and the startup mode storage table 9 is generated. Furthermore, SY
S. All the user business system parameters 4-1 and 4-2 in the SYSTEM file 3 are loaded into the memory 13 as the user business system parameters 7-1 and 7-2, and the SYS. The system parameter update information 5 in the SYSTEM file 3 is loaded into the memory 13 as the system parameter update information 8.

When a system parameter selection command PARM is input from the console 15,
The system initial loading means 6 performs the user business system parameter 7-1 or 7 specified by the PARM command.
-2 is copied to the system parameter table 10.

Further, when an MNTN command is input from the console 15, the system initial loading means 6
Sets a value indicating that the maintenance mode has been activated in the activation mode storage table 9.

System parameter table updating means 11
Refers to the startup mode storage table 9 in which the value is set by the system initial loading means 6 and recognizes that the startup is in the maintenance mode, and based on the system parameter update information 8, the system selected by the PARM command The system parameter table 10 storing the parameters is updated. That is, for each entry of the system parameter update information 8, an update location in the system parameter table 10 is specified from the position information 8-1 and the size information 8-2 shown in FIG. To update the system parameters in the system parameter table 10 for maintenance work. The OS various functions 12 operate by referring to the updated system parameter table 10, so that a system operation suitable for maintenance work can be performed.

When the computer system is started up for user job operation, an RSET command and a RARM command specifying a set of system parameters to be used are input from the console 15 and no MNTN command is input. .

When the REST command is input from the console 15, the system initial loading means 6 causes the SYS. By loading the contents of the SYSTEM file 3 into the memory 13, generating the OS various functions 12 and the system parameter table updating means 11, generating the framework of the system parameter table 10 and the initial state of the startup mode storage table 9, All the user business system parameters 4-1 and 4-2 are loaded into the memory 13 as the user business system parameters 7-1 and 7-2, and the system parameter update information 5 is updated in the memory 13 Load as information 8. Further, when the system parameter selection command PARM is input from the console 15, the system initial load means 6 causes the user business system parameter 7-1 or 7-2 specified by the PARM command.
Is copied to the system parameter table 10.

System parameter table updating means 11
Refers to the start-up mode storage table 9 whose value is set by the system initial loading means 6 and stops the operation when recognizing that the start-up is not in the maintenance mode.
That is, the system parameter table 10 is not updated based on the system parameter update information 8. Since the OS various functions 12 operate by referring to the system parameter table 10, the OS various functions operate according to the contents of the user business system parameters specified by the PARM command.

FIG. 3 is a diagram showing an example of the configuration of a main part of another computer system to which the present invention is applied and a flow of data.
The computer system of this example is a cluster-coupling computer system in which a plurality of hosts (host 1, host 2,..., Host n) are connected via an interconnection network (not shown).

In the cluster-joined computer system,
Since the user business system parameters are required for each host, in the system-generated parameter registration work, the host 1 user business system parameter definitions 1-11, 1-12 and the host 2 user business system parameters as shown in FIG. System parameter definitions 1-21, 1-22, ..., host n
User business system parameter definition 1-n1, 1-n
2 is input to the system parameter registration means 2, and the SYS. User system parameters 4-11, 4-12, 4-2 are stored in the SYSTEM file 3.
1, 4-22,..., 4-n1, 4-n2. Note that SYS. The system file 3 incorporates system parameter update information 5 as one piece of information provided by the OS together with an OS core (not shown). The contents of the system parameter update information 5 are the same as those described in FIG.

The system is started up at SYS. SYSTE
This is executed for each host by the M file 3 and the system initial loading means 6. The flow of the processing is performed as follows, as in the case of the embodiment of FIG.

When the host is started for maintenance work, a RSET command, a RARM command specifying system parameters to be used, and an MNTN command for instructing start-up during maintenance are input from a console (not shown). .

When the REST command is input, the system initial loading means 6 sets the SYS. The contents of the SYSTEM file 3 are loaded into the memory 13, the OS various functions 12 and the system parameter table updating means 11 are generated, and the framework of the system parameter table 10 and the initial state of the startup mode storage table 9 are generated. User business system parameters 4-11 to 4-n2
Is stored in the memory 13 as the user business system parameter 7−
11 to 7-n2, and the system parameter update information 5 is loaded into the memory 13 as system parameter update information 8. Further, when the system parameter selection command PARM is input, the system initial load means 6 causes the user business system parameters (7-11 or 7-12, host 2 7-2
1 or 7-22,..., 7-n1 or 7-n2 is specified for the host n) to the system parameter table 10. Further, when the MNTN command is input, the system initial loading means 6 sets a value indicating that the maintenance mode has been activated in the activation mode storage table 9.

System parameter table updating means 11
Refers to the startup mode storage table 9 in which the value is set by the system initial loading means 6 and recognizes that the startup is in the maintenance mode, and based on the system parameter update information 8, the system selected by the PARM command The system parameter table 10 storing the parameters is updated. That is, for each entry of the system parameter update information 8, an update location in the system parameter table 10 is specified from the position information 8-1 and the size information 8-2 shown in FIG. To update the system parameters in the system parameter table 10 for maintenance work. Since the OS various functions 12 operate by referring to the updated system parameter table 10, a system operation suitable for maintenance work is performed.

Startup at the time of user job operation When starting up the host for the purpose of user job operation, an RSET command and a RARM command specifying a set of system parameters to be used are input from a console (not shown), and no MNTN command is input. .

When the REST command is input, the system initial loading means 6 sets the SY
S. The contents of the SYSTEM file 3 are loaded into the memory 13 to generate the OS various functions 12 and the system parameter table updating means 11, and the framework of the system parameter table 10 and the startup mode storage table 9
Is generated, all the user business system parameters 4-11 to 4-n2 are loaded into the memory 13 as the user business system parameters 7-11 to 7-n2, and the system parameter update information 5 is stored. Memory 13
As system parameter update information 8.
When the system parameter selection command PARM is input from the console, the system initial loading means 6 copies the user business system parameters specified by the PARM command to the system parameter table 10.

System parameter table updating means 11
Refers to the start-up mode storage table 9 whose value is set by the system initial loading means 6, recognizes that the start-up is not in the maintenance mode, and stops the operation. OS
Various functions 12 are stored in the system parameter table 10.
, The various functions of the OS operate according to the contents of the user business system parameters specified by the PARM command.

[0046]

As described above, according to the present invention, at the time of starting the maintenance mode, the system parameter for user operation in the system parameter table is changed to the system parameter for maintenance work according to the system parameter update information. The system parameter for maintenance work as SYS. There is no need to register it in the SYSTEM file. For this reason, the number of man-hours for maintenance workers can be reduced, and work errors can be reduced.

Further, since the system parameters for the user work are changed to the system parameters for the maintenance work, the parameters that need to be set to the same value in the user work and the maintenance work can be dealt with by not changing them. When the system parameter for the user operation is changed, the system parameter for the maintenance operation naturally matches the parameter, and it is not necessary to change the system parameter for the maintenance operation every time the system parameter for the user operation is changed as in the related art.

Although the present invention is naturally useful for a computer system composed of one host, a plurality of hosts are connected by an interconnection network, and each host needs to define system parameters. If the present invention is applied to a cluster-coupled computer system, there is a further effect.

[Brief description of the drawings]

FIG. 1 is a diagram showing an example of a configuration of a main part of an electronic computer system to which the present invention is applied and a flow of data.

FIG. 2 is an explanatory diagram of system parameter update information.

FIG. 3 is a diagram showing an example of a main configuration of a cluster-joined computer system to which the present invention is applied and a flow of data.

FIG. 4 is an explanatory diagram of a conventional technique.

[Explanation of symbols]

 1-1, 1-2: System parameter definition for user business 2. System parameter registration means 3. SYS. SYSTEM file 4-1, 4-2 User system parameters 5 User system parameter update information 6 System initial loading means 7-1, 7-2 User user system parameters 8 System parameter update information 9 Start-up Mode storage table 10 System parameter table 11 System parameter table updating means 12 OS various functions 13 Memory (main storage) 15 Console

Claims (3)

(57) [Claims] 1. A maintenance mode start-up method in an electronic computer system in which various functions of an OS during system operation are defined by a series of system parameters registered in a system parameter table. Loading the contents of a file holding system parameter update information that defines the update location and update contents of the system parameter table into the main memory, and setting the start-up mode in the start-up mode storage table of the main memory; Registering the user business system parameters loaded in the system parameter table in the system parameter table, and referring to the boot mode storage table, and when the boot mode is the maintenance mode, the system parameter update information loaded in the main memory. Changing the system parameters registered in the system parameter table to the system parameters for the maintenance work based on the above method. 2. A cluster-coupling computer system in which a plurality of hosts in which various functions of an OS during system operation are defined by a series of system parameters registered in a system parameter table are connected via an interconnection network. In the maintenance mode start-up method, the contents of a file holding the OS core part, the system parameters for user business for each host, and the system parameter update information that defines the update location and update content of the system parameter table are stored in the main memory of each host. Loading and setting the boot mode in the boot mode storage table of the main memory of each host; and in each host, the user business system parameters for the own host loaded in the main memory are stored in the system parameters of the own host. Steps to register in the table And flop, at each host, with reference to the start-up mode storage table in the main storage, when the start-up mode of the maintenance mode,
Changing the system parameters registered in the system parameter table of the host to the system parameters for maintenance work based on the system parameter update information loaded in the main memory. How to get started. 3. A startup mode storage table is set to indicate that the startup mode is the maintenance mode by inputting a command for instructing startup at the time of maintenance from the console at the time of system startup. 3. A method for starting a maintenance mode in a computer system according to claim 1.