JPS6165342A - Artificial disk device transfer processor - Google Patents

Abstract

PURPOSE:To transfer data to a slave CPU and to reduce the load on a master CPU by providing the slave CPU which is coupled closely to the master CPU, and storing its operation system in the main storage. CONSTITUTION:When an input/output request to an artificial disk 4 is generated by the master CPU1, the master OS3 accepts this request and converts this request into a request for data transfer between a main storage device 2 and the artificial disk 4, and the OS generates an interruption for the data transfer request to the slave CPU5, and enters an input/output wait state. The slave CPU5 when recognizing the data transfer request transfers data between the main storage device 2 and artificial disk 4 under the slave OS6 and annunciates an interruption to the master CPU after the transfer is completed.

Description

Detailed Description of the Invention [Field of Industrial Application] This invention relates to a pseudo disk device in a computer system in which a large-capacity main storage device can be arranged as a pseudo disk device (hereinafter referred to as a pseudo disk device). 0 [Prior Art] This is a method related to a transfer processor.

In the figure, (1) is the main central treatment unit (hereinafter referred to as mask CP).
σ), (2) is the main memory, (8) is the operating system of the mask CPU (1) (hereinafter referred to as master 08) that operates on the main memory (8), (
4) is a pseudo disk device that treats a mass storage device as a disk.

In the above configuration, when an input/output request occurs to the pseudo disk device (4), conventionally the mask OS (8) running on the mask CPU (1) connects the actual disk device and main storage device (2). Data transfer between the pseudo disk device (4) and the main storage device (2) was realized by converting input/output operations performed between the virtual disk device (4) and the main memory device (2) into move commands.

[Problem to be solved by the invention]

The conventional data transfer method described above is superior in terms of responsiveness, reliability, etc. compared to data transfer methods using actual disk devices, but on the other hand, the amount of data transferred is There was a problem that (1) resulted in a high load.

The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a transfer processor for a pseudo disk device that can reduce the load on a mask CPU.

[Means for solving problems]

The pseudo disk device transfer processor according to the present invention includes:
Mask CPU installed in the same computer system
A slave CPU is separately provided.

[Effect]

In this invention, by having the slave CPσ perform data transfer processing on the pseudo disk, the mask C
Aim to reduce PH load.

〔Example〕

FIG. 1 is a block diagram showing one embodiment of the present invention. Note that the same or equivalent parts as in FIG. 2 are given the same reference numerals. In the same figure, (6) is the master CPU (
1) and the slave CPσ closely coupled with its mask CP[J(1), (6) is the mask CPU
Slave c operating on the same main storage device (2) as (1)
P [J (5) operation system (hereinafter referred to as slave O8).

In the above configuration, when an input/output request to the pseudo disk (4) occurs on the mask CPσ(1), first,
Mask OS (a) accepts input/output requests. Then,
The master 08 converts such an input/output request into a data transfer request between the main storage device (2) and the pseudo disk (4).

Thereafter, an interrupt for a data transfer request is generated to the slave CPσ(5), and the mask 0S(a) enters an input/output waiting state in the same way as an actual input/output activation command.

On the other hand, slave c that received the data transfer request interrupt
The P U (5) recognizes the contents and the slave OS (6) uses the main storage (2) and the pseudo disk (4).
), and after the transfer is completed, the mask CP
Report as an interrupt for σ.

The master 08 (8) receives such an interrupt as an input/output end interrupt, processes it in the same way as an interrupt from an actual input/output device, and performs end processing for the input/output request of the pseudo disk (4).

〔Effect of the invention〕

According to this invention, in addition to the mask CPU, this mask CP
Since the slave CPU and its operation system tightly coupled to σ are provided in the main memory, this slave CPU
Data can be transferred between the main storage device and the pseudo disk via the PU, and therefore the load on the mask CPσ can be reduced.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of a pseudo disk device transfer processor according to an embodiment of the present invention, and FIG. 2 is a block diagram showing the configuration of the conventional processor. (1) Master cptr (z) * Main storage device (8)
... Master OS (4) ... Pseudo disk device (5
)...Slave CPU (6)...Slave O8

Claims (1)

[Claims] In a pseudo disk device transfer processor in a computer system in which a mass storage device can be arranged as a pseudo disk device, a subordinate central processing unit provided in addition to the main central processing unit so as to be tightly coupled to the main central processing unit and operating means for the subordinate central processing unit provided in a main storage device.