Restoring an application from a system dump file

Patent metadata

Field	Value
Publication number	US-9652329-B2
Application number	US-201414303804-A
Country	US
Kind code	B2
Filing date	Jun 13, 2014
Priority date	May 12, 2014
Publication date	May 16, 2017
Grant date	May 16, 2017

Abstract

An application is identified that was running at a time of a system crash. A system dump file is received that was created responsive to the system crash. A restoration dataset stored in the system dump file is determined. The application is restored based, at least in part, on the restoration dataset.

First claim

What is claimed is:

1. A method for restoring an application from a kernel dump file, the method comprising:
identifying an application that was running at a time of a system crash;
receiving a kernel dump file that was created responsive to the system crash;
determining a restoration dataset stored in the kernel dump file;
determining, based on the restoration dataset, if data generated by the application at the time of the system crash was paged out to swap space;
responsive to determining data generated by the application at the time of the system crash was paged out to swap space, extracting swap space information; and
restoring the application based, at least in part, on the restoration dataset and the swap space information, wherein the application is restored to the state it was in at the time of the system crash;
wherein:
at least the receiving, determining, and restoring steps are performed by computer software running on computer hardware.

2. The method of claim 1 , wherein the restoration dataset includes at least one of the following: stack, heap, central processing unit state, resources assigned or used including shared memory, shared libraries, open file descriptors and sockets, and thread specific information.

3. The method of claim 1 , further comprising:
determining a plurality of target applications to restore that were running prior to the system crash.

4. The method of claim 1 , further comprising:
selecting the target application from a list of applications that were running at the time of the system crash.

5. The method of claim 1 , wherein the application is restored to the state it was in at a time before the system crash.

Assignees

• IBM

Inventors

• Prasad Aravinda
• Salgaonkar Mahesh J

Classifications

• G06F11/1438 Primary

  Restarting or rejuvenating · CPC title

• G06F16/951

  Indexing; Web crawling techniques · CPC title

• G06F11/1469

  Backup restoration techniques · CPC title

• G06F11/0793 Primary

  Remedial or corrective actions (recovery from an exception in an instruction pipeline G06F9/3861; by retry G06F11/1402; for recovering from a failure of a protocol instance or entity H04L69/40) · CPC title

• G06F11/0706

  the processing taking place on a specific hardware platform or in a specific software environment · CPC title