JPS61216063A - Information processing device - Google Patents

Abstract

PURPOSE:To connect plural I/O processors having functions reporting a channel fault and an I/O fault by connecting plural I/Os, converting the I/O and reporting the effect to the system. CONSTITUTION:The I/O processors 1-3 are composed of the same I/Os having a common interface with a function reporting I/O and channel faults. When each I/O has a fault, it reports the fault to an information processing device through buses 121-123, and simultaneously sets channel information owned by each I/O to buses 131-133. In such a case, when the information processing device receives the I/O fault from the buses 121-123, it checks that I/O fault is transmitted from which bus. If the I/O fault is reported only from the bus 122, fault information on channels 20-27 is generated through the bus 132, by obtaining the channel constitution of the I/O 2, converted into a channel fault and reported to the system. Thus plural I/Os having the function reporting channel and I/O faults can be connected.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention j] The present invention relates to failure handling of an input/output processing device.

[Background of the invention] IBM SYSTEM1570 EyaenaeHlA
architecture Pr1ciplesof
, channel according to 0operation (5A22-7085-0).

There are two types of failure reports regarding channel subsystems: channel rate small bending channel failure and channel subsystem damage input/output processing unit failure. Subsystem damage is reported when the channel subsystem is in a checkstop state or a malfunction is detected. , 0 indicating that the channel subsystem cannot continue processing.
Channel report bending is a detection of a failure in a channel or subchannel, reporting of which can be suppressed using a mask bit, and is a minor failure compared to subsystem damage. In such a system, consider how to achieve the above specifications when multiple input/output processing devices that can report two faults, channel report bending and channel subsystem damage, are connected to form one subsystem. It is necessary to solve the problem that when one unit reports channel subsystem damage, it appears as if the channel bus included in the normally operational I/O processing unit has also been lost. (Object of the Invention) The object of the present invention is to connect a number of input/output sensing 'fM devices, convert a fault in one input/output processing device into a channel fault of seven input/output processing devices, and report the result to the system. By doing so, it is an object of the present invention to provide an information processing device capable of connecting a plurality of identical input/output processing devices having a function of reporting channel failures and input/output processing device failures.

[Summary of the invention]

A feature of the present invention is that a plurality of input/output processing devices having two channels failure and input/output processing device failure are connected as a failure reporting means, and when an input/output processing device failure is reported, other If there is an input/output processing device, the system converts the input/output processing device failure into a channel failure and reports it to the system.

Examples of the invention An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows an example of a connection configuration between an information processing device and an input/output processing device according to the present invention. I/O processor failure.

Figure 2 shows an overview of channel failure processing. The input/output processing devices 1 to 3 are the same input/output processing devices each having a common interface for reporting input/output processing device failures, channel failures, and channel configuration information reports to the information processing devices. If the input/output processing device detects a channel failure, it is configured to report the channel failure to the information processing device via bus lines 111 to 113, and to set the faulty channel to the bus lines 131 to 133.

The information processing device directly reports channel fault interrupts from the buses 111 to 113 to the system along with the channel shoulders of the buses 131 to 133.

Next, when an input/output processing device failure occurs, the input/output processing device reports the input/output processing device failure to the information processing device via the bus lines 121 to 123, and also transmits the channel information possessed by the white output processing device to the bus lines 131 to 133. It is configured to be set to The information processing device has bus lines 121 to 123.
When receiving an input/output processing unit failure from
It is checked whether an input/output processing unit failure has been reported from all buses 21 to 123, and if an input/output processing unit failure has been reported from all buses, the input/output processing unit failure is directly reported to the system. In addition, if an input/output processing device failure is reported only from the bus 122, the channel configuration of the input/output processing device 2 is obtained via the bus 132, and the channel 20
~27 failure information is created and reported to the system along with the channel failure.

〔Effect of the invention〕

According to the present invention, since the same input/output processing device having the same interface can be connected to the information processing device, the input/output processing device can be simplified.

Also, when multiple input/output processing devices are connected, one
Even if a failure occurs in an input/output processing unit in a section, the system can continue processing using the remaining channel paths.

[Brief explanation of drawings]

FIG. 1 is a configuration diagram of an information processing device and an input/output processing device that are an embodiment of the present invention, and FIG. 2 is a diagram showing channel failures and input/output processing device failures in the information processing device that is an embodiment of the present invention. FIG. 3 is a schematic diagram of processing. 1 to 3...Input/output lI & embedded device, 111 to 113... Bus bar, 151 to 1551... Bus bar. Representative Patent Attorney Katsuo Ogawa,' Figure 2

Claims (1)

[Claims] 1. In a system that has two methods for reporting faults: channel faults and input/output processing device faults, there are multiple input/output processing devices that can report faults using each of the channel faults and input/output processing device faults described above. It consists of connectable information processing devices, and if there is only one input/output processing device connected when an input/output processing device failure is reported, the input/output processing device failure is reported to the system, and multiple input/output processing devices are connected. An information processing device characterized in that when the input/output processing device that has reported the fault is connected, the information processing device converts the fault into a channel fault for all channels of the input/output processing device that has reported the fault and reports it to the system.