Method, apparatus, and system for handling virtual machine internal fault

Patent metadata

Field	Value
Publication number	US-9483368-B2
Application number	US-201314104802-A
Country	US
Kind code	B2
Filing date	Dec 12, 2013
Priority date	Sep 17, 2012
Publication date	Nov 1, 2016
Grant date	Nov 1, 2016

Abstract

A method, an apparatus, and a system for handling a virtual machine internal fault. The method includes: monitoring, by a virtual machine internal fault detecting apparatus, a state of a virtual machine operating system; when detecting that the virtual machine operating system encounters an exception, obtaining, by an exception catching module in the virtual machine internal fault detecting apparatus, exception information corresponding to the exception according to a context of the virtual machine operating system; and reporting, by the exception catching module, the exception information to a virtual machine monitoring apparatus, so that the virtual machine monitoring apparatus determines, according to the exception information, a policy for resolving the exception corresponding to the exception information, and resolves the exception corresponding to the exception information by using the policy. The present invention is applicable to a virtualized environment having a virtual machine.

First claim

What is claimed is:

1. A method for handling a virtual machine internal fault, comprising:
receiving, by a virtual machine monitoring apparatus, exception handling information configured by a user, wherein the exception handling information comprises handling policies corresponding to multiple exception types:
receiving, by the virtual machine monitoring apparatus, exception information sent by an exception catching module in a virtual machine internal fault detecting apparatus:
determining, by the virtual machine monitoring apparatus and according to the exception information, a policy for resolving an exception corresponding to the exception information; and
resolving, by the virtual machine monitoring apparatus, the exception corresponding to the exception information by using the policy,
wherein the exception information comprises an exception type and a location where the exception occurs,
wherein determining the policy for resolving the exception corresponding to the exception information comprises searching, by the virtual machine monitoring apparatus, the handling policies corresponding to the multiple exception types in the exception handling information for the policy corresponding to the exception type in the exception information, and
wherein resolving, by the virtual machine monitoring apparatus, the exception corresponding to the exception information by using the policy comprises implementing, by the virtual machine monitoring apparatus and according to the location where the exception occurs, the policy corresponding to the exception type in the exception information at the location where the exception occurs.

2. The method according to claim 1 , wherein before receiving the exception information sent by the exception catching module in the virtual machine internal fault detecting apparatus, the method comprises:
setting, by the virtual machine monitoring apparatus, a non-maskable interrupt flag bit on the virtual machine monitoring apparatus to indicate that a non-maskable interrupt exists in a virtual machine operating system; and
sending, by the virtual machine monitoring apparatus, the non-maskable interrupt to the exception catching module at a predefined frequency.

3. The method according to claim 2 , wherein after sending the non-maskable interrupt to the exception catching module at a predefined frequency, the method comprises receiving, by the virtual machine monitoring apparatus, virtual machine-related information sent by the exception catching module.

4. A method for handling a virtual machine internal fault, comprising:
receiving, by a virtual machine monitoring apparatus, exception handling information configured by a user, wherein the exception handling information comprises handling policies corresponding to multiple exception types:
receiving, by the virtual machine monitoring apparatus, exception information sent by an exception catching module in a virtual machine internal fault detecting apparatus:
determining, by the virtual machine monitoring apparatus and according to the exception information, a policy for resolving an exception corresponding to the exception information; and
resolving, by the virtual machine monitoring apparatus, the exception corresponding to the exception information by using the policy,
wherein the exception information comprises an exception type and a location where the exception occurs,
wherein determining the policy for resolving the exception corresponding to the exception information comprises searching, by the virtual machine monitoring apparatus, the handling policies corresponding to the multiple exception types in the exception handling information for the policy corresponding to the exception type in the exception information, and
wherein resolving, by the virtual machine monitoring apparatus, the exception corresponding to the exception information by using the policy comprises sending, by the virtual machine monitoring apparatus, the policy corresponding to the exception type in the exception information to a virtual machine operation executing module in a virtual machine so that the virtual machine operation executing module implements the policy corresponding to the exception type in the exception information at the location where the exception occurs.

5. The method according to claim 4 , wherein before receiving the exception information sent by the exception catching module in the virtual machine internal fault detecting apparatus, the method comprises:
setting, by the virtual machine monitoring apparatus, a non-maskable interrupt flag bit on the virtual machine monitoring apparatus to indicate that a non-maskable interrupt exists in a virtual machine operating system; and
sending, by the virtual machine monitoring apparatus, the non-maskable interrupt to the exception catching module at a predefined frequency.

6. The method according to claim 5 , wherein after sending the non-maskable interrupt to the exception catching module at a predefined frequency, the method comprises receiving, by the virtual machine monitoring apparatus, virtual machine-related information sent by the exception catching module.

7. A computer system, comprising a memory configured to store a program and a processor configured to read the program from the memory to:
receive exception handling information configured by a user, wherein the exception handling information comprises handling policies corresponding to multiple exception types;
receive exception information sent by an exception catching module in a virtual machine internal fault detecting apparatus, wherein the exception information comprises an exception type and a location where the exception occurs;
search the handling policies corresponding to the multiple exception types in the exception handling information for a policy corresponding to the exception type in the exception information; and
implement, according to the location where the exception occurs, the policy corresponding to the exception type in the exception information at the location where the exception occurs.

8. The computer system according to claim 7 , wherein the processor is further configured to:
set, by the virtual machine monitoring apparatus, a non-maskable interrupt flag bit on the virtual machine monitoring apparatus to indicate that a non-maskable interrupt exists in a virtual machine operating system; and
send, by the virtual machine monitoring apparatus, the non-maskable interrupt to the exception catching module at a predefined frequency.

9. The computer system according to claim 8 , wherein the processor is further configured to receive, by the virtual machine monitoring apparatus, virtual machine-related information sent by the exception catching module.

10. A computer system, comprising a memory configured to store a program and a processor configured to read the program from the memory and perform the steps of:
receive exception handling information configured by a user, wherein the exception handling information comprises handling policies corresponding to multiple exception types;
receive exception information sent by an exception catching module in a virtual machine internal fault detecting apparatus, wherein the exception information comprises an exception type and a location where the exception occurs;
search the handling policies corresponding to the multiple exception types in the exception handling information for a policy corresponding to the exception type in the exception information; and
send the policy corresponding to the exception type in the exception information to a virtual machine operation executing module in a virtual machine so that the virtual machine operation executing modu

Assignees

• Huawei Tech Co Ltd

Inventors

• Yang Xiaowei

Classifications

• G06F11/0772

  Means for error signaling, e.g. using interrupts, exception flags, dedicated error registers · CPC title

• G06F2009/45591

  Monitoring or debugging support · CPC title

• G06F11/1484 Primary

  involving virtual machines · CPC title

• G06F9/45533

  Hypervisors; Virtual machine monitors · CPC title

• G06F11/0712

  in a virtual computing platform, e.g. logically partitioned systems · CPC title