JP3022829B2 - Automatic storage device allocation device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic storage device allocating device for an information processing system, and more particularly, to an automatic allocation of a plurality of external storage devices.

[0002]

2. Description of the Related Art Conventionally, this type of storage device is
This is used to prevent the input and output from being concentrated only on a specific storage device, while preventing an external storage device from having no input and output at all. An example of a conventional storage device allocating device is described in JP-A-3-225445 (load distribution striping method).

The storage device allocating device described in this publication manages a virtual partition which stores the transfer speed of each storage device, the amount of data required to maintain processing efficiency, the required processing speed, and the number of storage devices. A storage device for distributing data so as to satisfy the required processing speed based on a requested data allocation amount and a required processing speed stored in the virtual partition management table during the allocation process. Means for calculating the number and allocation amount, a storage device management table storing the amount of data that can be stored indicating the status of each storage device, the length of a queue for input / output, and the input / output request amount; The allocation is performed in a predetermined order according to the calculated number of storage devices and the allocated amount from the status of each storage device stored in the device management table. It is composed of a means for updating the storage device management table and determines the that storage device. In order to equalize the load on each storage device as much as possible, information on the input / output of each storage device is referred to from the storage device management table, and the storage devices are selected in order from the one with the smallest input / output request amount.

[0004]

A first problem is that the virtual partition management table and the storage device management table are frequently referred to, and the input / output efficiency is reduced.

The reason is to refer to the table each time an input / output request is made. In particular, a plurality of jobs are executed at the same time, and the I / O efficiency decreases as the number of I / O requests increases.

In a case where a plurality of jobs are simultaneously executed in an information processing system, if a work external storage device used for a sort work or the like is used simultaneously for a plurality of jobs, the
There is a problem that it becomes an O-neck and the processing amount per unit time decreases. If one external storage device is assigned to one job, the I / O bottleneck is solved, and the processing amount per unit time increases, but the cost also increases.

SUMMARY OF THE INVENTION An object of the present invention is to efficiently use a plurality of external storage devices and reduce I / O bottlenecks without reducing input / output efficiency. To increase the amount.

[0008]

According to the present invention, as means for solving the above-mentioned problems, in an information processing system having a plurality of external storage devices, allocation management information 6 of an external storage device corresponding to a job is stored. A corresponding assignment management table 21, a parameter file 31 storing an unused or least-used external storage device name used at the next job startup, and a requested startup job name. Means for starting a job by adding an unused or least-used external storage device name read from the parameter file 31 to the JCL to be executed, and setting the startup job name and the external storage device name to It is registered in the assignment management table 21 and further searched for the assignment management table to determine whether it is unused or has a multiplicity of use. Means for storing the lowest external storage device name in the parameter file 31 and means for searching for and deleting the corresponding start job name 62 in the assignment management table 21 when a job end notification is received. An automatic storage device allocating device is provided.

[0009]

According to the present invention, when there is a job start request from the computer system, the control means 22 instructs the job start means 25 to start a job. Job activating means 25
Starts the job 41 based on the parameter file 31 and the JCL storage file 32. The control unit 22 updates the assignment management information 6 in the assignment management table 21.
Further, the external storage device name 61 to be used next time the job 41 is started is specified, and the parameter changing unit 23 is instructed to change the parameter. The parameter changing unit 23 updates the parameter file 31.

The control means is realized by constantly allocating the use status of the external storage device and updating the management table, and the parameter changing means includes the unused or low multiplicity of the external storage device specified by the control means. Change the parameter file to a name.

According to the present invention, by providing the storage device automatic allocation control device with the allocation management table, the allocation status of the external storage devices can be managed in a unified manner, and the external storage devices are not used or frequently used. The least severe external storage device can be specified. Furthermore, a parameter file is provided in a magnetic disk device or the like,
By constantly updating the specified external storage device name to the latest information, the allocation of the external storage device is optimized,
I / O bottlenecks are eliminated without increasing costs
The processing amount per unit time can be increased.

Further, according to the present invention, unlike the prior art, the table is referred to only at the time of allocation and release of the external storage device without referring to the table each time an I / O request is made. Is not reduced.

Therefore, it is possible to increase the processing amount per unit time by efficiently using a plurality of external storage devices and eliminating the I / O bottleneck without lowering the input / output efficiency.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS [1] Description of Configuration Next, an embodiment of the present invention will be described in detail with reference to the drawings.

Referring to FIG. 1, a first embodiment of the present invention includes a storage device automatic allocation control device 2 for performing automatic allocation control of an external storage device, and a storage device 3 for storing information. .

The storage device 3 stores a parameter file 31
And a JCL storage file 32.

The parameter file 31 stores an external storage device name to be used next time a job is started as a specified value when the computer system is started.

The JCL storage file 32 stores a job execution JCL (Job Control Language).

The storage device automatic allocation control device 2 has an allocation management table 21 for storing allocation management information 6.
A control means 22 for controlling the whole; a parameter changing means 23 for changing the parameter file 31; a job end notifying means 24 for notifying the end of the job; And a job activation unit 25 for performing

[2] Description of Operation Next, the operation of the present embodiment will be described in detail with reference to FIGS. FIG. 1 is a block diagram showing an embodiment of an automatic storage device allocating device of the information processing system of the present invention. FIG. 2 shows the control means 22 of FIG.
3 is a flowchart for explaining the operation of FIG. FIG. 3 is a flowchart for explaining the operation of the parameter changing unit 23 of FIG.
FIG. 4 is a flowchart illustrating the operation of the job end notification unit 24 of FIG. FIG. 5 is a flowchart for explaining the operation of the job starting unit 25 of FIG. FIG. 6 is a format diagram showing the contents of the assignment management table 21 of FIG.

When there is a job start request from the computer system, the control unit 22 notifies the job start unit 25 of the start job name and instructs start of the job (steps 201 and 202 in FIG. 2).

The job starting means 25 reads the corresponding JCL from the JCL storage file 32 based on the notified job name. Further, the external storage device name is read from the parameter file 31, added to the read JCL to start the job, and the control unit 22 is notified of the external storage device name and the start job name (steps 501, 502, 50 in FIG. 5).
3,504).

The control unit 22 creates the assignment information 6 based on the external storage device name and the start job name notified from the job start unit 25 and stores it in the assignment management table 21. Further, the allocation management table 21 is searched to identify the name of the external storage device that has not been used or has the lowest usage multiplexing degree, and notifies the parameter changing unit 23 (steps 203, 204, 205, and 206 in FIG. 2).

The parameter changing means 23 includes the control means 22
Is written to the parameter file 31 (steps 301 and 302 in FIG. 3).

The job 41 executed in the computer system sends a job end notification to the job end notification means 24 at the end of each job.

The job end notifying unit 24 notifies the control unit 22 of the job name of the completed job (steps 401 and 402 in FIG. 4).

The control means 22 controls the assignment management table 2
The corresponding start job name 62 in 1 is searched and deleted.

[0028]

The first effect is that a plurality of external storage devices can be used efficiently without lowering the input / output efficiency,
By eliminating the / O neck, the processing amount per unit time can be increased.

The reason is that the efficiency of input / output is not affected since the external storage device is only allocated and released without referring to the table each time an input / output request is made.

According to the present invention, the assignment management table is provided in the storage device automatic assignment control device, so that the assignment status of the external storage device can be managed in a unified manner, and the external storage device is not used or has the lowest use multiplicity. External storage devices can now be specified. Furthermore, by providing a parameter file and constantly updating it to the latest information,
There is an effect that the allocation of the external storage device is optimized, the I / O bottleneck is eliminated without increasing the cost, and the processing amount per unit time is increased.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating an embodiment of an automatic storage device allocation device of an information processing system according to the present invention.

FIG. 2 is a flowchart illustrating an operation of a control unit in FIG. 1;

FIG. 3 is a flowchart illustrating an operation of a parameter changing unit of FIG. 1;

FIG. 4 is a flowchart illustrating the operation of a job end notification unit in FIG. 1;

FIG. 5 is a flowchart illustrating the operation of a job starting unit in FIG. 1;

FIG. 6 is a format diagram showing contents of an assignment management table of FIG. 1;

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 automatic storage device allocation device 2 automatic storage device allocation control device 3 storage device 4 main storage device 5 external storage device 6 allocation management information 21 allocation management table 22 control means 23 parameter changing means 24 job end notifying means 25 job starting means 31 parameter File 32 JCL storage file 41 Job

Continuation of the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) G06F 9/46 G06F 9/06 G06F 15/00 G06F 12/00 G06F 3/06

Claims (4)

(57) [Claims] In an information processing system having a plurality of external storage devices, an assignment management table for storing assignment management information of an external storage device corresponding to a job; Alternatively, the parameter file storing the name of the external storage device with the lowest usage multiplicity and the JCL corresponding to the requested start job name are read from the parameter file and are unused or have the lowest usage multiplicity. Means for starting a job by adding an external storage device name; registering the startup job name and the external storage device name in the allocation management table; and further searching the allocation management table to determine whether it has been used. A means for storing the name of the external storage device having the lowest multiplicity of use in the parameter file; When digits, and means to find and delete the corresponding starting job name in the allocation management table,
An automatic allocating device for a storage device, comprising: 2. In an information processing system having a plurality of external storage devices, a corresponding JCL is read from a JCL storage file (32) based on a start job name, and the read JCL is read from a parameter file (31). A job starting means (25) for starting a job by adding an external storage device name that is not used or has the lowest usage multiplicity;
Based on the external storage device name and the start job name notified from the job starting means (25), create allocation information (6) and store it in the allocation management table (21). 21), and specifies the name of the external storage device which is not used or has the lowest degree of multiplexing, notifies the parameter change means (23). A control unit (22) for searching for and deleting the corresponding startup job name (62) in the table (21); and an external device that is notified from the control unit (22) and that is unused or has the lowest usage multiplicity. Parameter changing means (2) for writing the storage device name to the parameter file (31);
3. The automatic storage device allocation apparatus according to claim 1, further comprising: 3. The automatic storage device allocating apparatus according to claim 2, further comprising a job end notifying unit for notifying the control unit of the job name of the completed job. 4. The automatic storage device allocation apparatus according to claim 1, wherein the allocation management table is referred to only when the external storage device is allocated and when the external storage device is released. .