JPS6421542A - Channel reset instruction generation control system in virtual computer system - Google Patents

Channel reset instruction generation control system in virtual computer system

Info

Publication number
JPS6421542A
JPS6421542A JP62177690A JP17769087A JPS6421542A JP S6421542 A JPS6421542 A JP S6421542A JP 62177690 A JP62177690 A JP 62177690A JP 17769087 A JP17769087 A JP 17769087A JP S6421542 A JPS6421542 A JP S6421542A
Authority
JP
Japan
Prior art keywords
channel
shared channel
reset instruction
error
virtual computer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP62177690A
Other languages
Japanese (ja)
Other versions
JPH0833835B2 (en
Inventor
Shinji Kagawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP62177690A priority Critical patent/JPH0833835B2/en
Publication of JPS6421542A publication Critical patent/JPS6421542A/en
Publication of JPH0833835B2 publication Critical patent/JPH0833835B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F9/00—Arrangements for program control, e.g. control units
    • G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
    • G06F9/46—Multiprogramming arrangements
    • G06F9/48—Program initiating; Program switching, e.g. by interrupt
    • G06F9/4806—Task transfer initiation or dispatching
    • G06F9/4843—Task transfer initiation or dispatching by program, e.g. task dispatcher, supervisor, operating system

Landscapes

  • Engineering & Computer Science (AREA)
  • Software Systems (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Debugging And Monitoring (AREA)

Abstract

PURPOSE:To execute restoration after previously executing processing such as the maintenance of exclusive control information by resetting a shared channel after obtaining concents from all virtual computers to be used at the time of generating a channel error in the shared channel. CONSTITUTION:When a virtual computer VM(1)2-1 e.g. receiving the information of a channel error from the shared channel 4-1 through a CP 3 generates a channel reset instruction for resetting all devices managed by the shared channel 4-1 to the CP 3 in order to restore the channel error, the CP 3 informs an artificial channel error to other VM(2)2-2, 2-3, receives the answer of the channel reset instruction and then executes the channel reset instruction for the shared channel 4-1 to reset all the devices managed by the shared channel 4-1. Consequently, the maintenance of the exclusive control information of a DASD device managed by the shared channel 4-1 is executed, and under the status that a data set is prevented from being damaged or the like, the devices managed by the shared channel 4-1 generating a fault can be recovered.
JP62177690A 1987-07-15 1987-07-15 Error recovery controller Expired - Fee Related JPH0833835B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62177690A JPH0833835B2 (en) 1987-07-15 1987-07-15 Error recovery controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62177690A JPH0833835B2 (en) 1987-07-15 1987-07-15 Error recovery controller

Publications (2)

Publication Number Publication Date
JPS6421542A true JPS6421542A (en) 1989-01-24
JPH0833835B2 JPH0833835B2 (en) 1996-03-29

Family

ID=16035403

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62177690A Expired - Fee Related JPH0833835B2 (en) 1987-07-15 1987-07-15 Error recovery controller

Country Status (1)

Country Link
JP (1) JPH0833835B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05265783A (en) * 1992-03-19 1993-10-15 Fujitsu Ltd Virtual computer system i/o control system
JP2007233687A (en) * 2006-03-01 2007-09-13 Nec Corp Virtual computer system, control method of virtual computer, and virtual computer program
JP2012198651A (en) * 2011-03-18 2012-10-18 Nec Corp Cluster system, virtual machine server, failover method for virtual machine, and failover program for the virtual machine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05265783A (en) * 1992-03-19 1993-10-15 Fujitsu Ltd Virtual computer system i/o control system
JP2007233687A (en) * 2006-03-01 2007-09-13 Nec Corp Virtual computer system, control method of virtual computer, and virtual computer program
JP2012198651A (en) * 2011-03-18 2012-10-18 Nec Corp Cluster system, virtual machine server, failover method for virtual machine, and failover program for the virtual machine

Also Published As

Publication number Publication date
JPH0833835B2 (en) 1996-03-29

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees