Method and apparatus for determining a range of files to be migrated

Patent metadata

Field	Value
Publication number	US-9892122-B2
Application number	US-201314433467-A
Country	US
Kind code	B2
Filing date	Sep 2, 2013
Priority date	Oct 10, 2012
Publication date	Feb 13, 2018
Grant date	Feb 13, 2018

Abstract

A method for determining a range of files to be migrated is disclosed, comprising: comparing the source system environment to be migrated with a set of incremental target system environments, to discover the change files in each of the target system environments relative to the source system environment, wherein each target system environment in the set of incremental target system environments comprises software on which the migration target application depends, and the software contained in the different target system environments is incremental; classifying the change files into different change patterns according to the change types of the change files in each comparison and the different change types of the change files among multiple comparisons; and determining a range of files to be migrated according to the change pattern.

First claim

The invention claimed is:

1. A computer-implemented method for determining a range of files to be migrated, comprising:
successively comparing, using a hardware processor, a source system environment having files of an existing software stack on which a target application to be migrated depends with a set of incremental target system environments;
discovering, based on said successively comparing, the change files in each of the target system environments relative to the source system environment, wherein each target system environment in the set of incremental target system environments comprises files of one or more layers of said software stack on which the migration target application depends, and the software contained in the different target system environments is incremental, wherein each successive target system environment compared has files of an additional software layer of said software stack than a previous compared target system environment;
classifying, using the hardware processor, the change files into different change patterns according to the change types of the change files in each comparison and the different change types of the change files among multiple comparisons, the change types comprising: a first change type in which the file is present only in the source system environment, a second change type in which the file is present only in the target system environment, and a third change type in which the file is present both in the source system environment and in the target system environment while the contents of file are different; and
determining, using the hardware processor, a range of files to be migrated according to the change patterns, and
migrating, using the hardware processor, the files of said range from the source system environment to the target system environment.

2. The method of claim 1 , wherein the set of incremental target system environments include a first target system environment with only the operating system on which the migration target application depends installed, a second target system environment with the operating system and the middleware on which the migration target application depends installed, and a third target system environment with the operating system and the middleware on which the migration target application depends and the migration target application itself installed.

3. The method of claim 2 , wherein the classifying the change files to different change patterns according to the change types of the change file in each comparison and the different change types of the change files among multiple comparisons comprises at least one of:
classifying, using the hardware processor, the files that belong to the first change type in the first comparison, to the first change type in the second comparison and to the first change type in the third comparison into a first change pattern;
classifying, using the hardware processor, the files that belong to the first change type in the first comparison, to the first change type in the second comparison and to the third change type in the third comparison into a fourth change pattern;
classifying, using the hardware processor, the files that belong to the first change type in the first comparison, to the third change type in the second comparison and to the third change type in the third comparison into a fifth change pattern;
classifying, using the hardware processor, the files that belong to the third change type in the first comparison, to the third change type in the second comparison and to the third change type in the third comparison into a sixth change pattern, wherein the file difference between the source system environment and target system environment in the first comparison, the file difference between the source system environment and target system environment in the second comparison and the file difference between the source system environment and target system environment in the third comparison are the same;
and wherein the determining a range of files to be migrated according to the change patterns comprises: determining that the files in at least one of the first change pattern, the fourth change pattern, the fifth change pattern and the sixth change pattern belong to the range of files to be migrated.

4. The method of claim 3 , wherein the determining that the files in at least one of the first change pattern, the fourth change pattern, the fifth change pattern and the sixth change pattern belong to the range of files to be migrated further comprises:
for the files in the first change pattern, clustering, using the hardware processor, the files into ad-hoc configuration files, third-party components, middleware configuration files and other irrelevant files, and determining that the ad-hoc configuration files, third-party components and middleware configuration files belong to the range of files to be migrated;
for the files in the fourth change pattern, determining, using the hardware processor, that the files are application configuration files in an application archive, and determining that they belong to the range of files to be migrated;
for the files in the fifth change pattern, clustering, using the hardware processor, the files into middleware configuration files and irrelevant configuration files, and determining that the middleware configuration files belong to the range of files to be migrated; and
for the files in the sixth change pattern, clustering, using the hardware processor, the files into operating system configuration files, middleware in the operating system configuration files and irrelevant operating system files, and determining that the operating system configuration files and middleware in the operating system configuration files belong to the range of files to be migrated.

5. The method of claim 2 , wherein the classifying the change files to different change patterns according to the change types of the change files in each comparison and the different change types of the change files among multiple comparisons further comprises at least one of:
classifying, using the hardware processor, the files that belong to no change type in the first comparison, to the second change type in the second comparison and to the second change type in the third comparison into a second change pattern, wherein the file difference between the source system environment and target system environment in the second comparison and the file difference between the source system environment and target system environment in the third comparison are the same;
classifying, using the hardware processor, the files that belong to the second change type in the first comparison, to the second change type in the second comparison and to the second change type in the third comparison into a third change pattern, wherein the file difference between the source system environment and target system environment in the first comparison, the file difference between the source system environment and target system environment in the second comparison and the file difference between the source system environment and target system environment in the third comparison are the same;
classifying, using the hardware processor, the files that belong to the third change type in the first comparison, to the third change type in the second comparison and to the third change type in the third comparison into a seventh change pattern, wherein the file difference between the source system environment and target system environment in the first comparison and the file difference between the source system environment and target system environment in the second comparison are different, while the file difference between the source system environment and target system environment in the second comparison and the file differenc

Assignees

• IBM

Inventors

• Apte Ajay A
• Jin Pu
• Liu Ying
• Meng Fanjing
• Sun Kewei
• Xu Jingmin

Classifications

• G06F8/51 Primary

  Source to source · CPC title

• G06F17/30138

  Physics · mapped topic

• G06F17/30079 Primary

  Physics · mapped topic

• G06F16/1727

  Details of free space management performed by the file system (saving storage space on storage systems G06F3/0608; management of blocks in storage devices G06F3/064) · CPC title

• G06F16/119 Primary

  Details of migration of file systems (migration mechanisms in storage systems G06F3/0647) · CPC title