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A migrating file system based on copy on access Disclosure Number: IPCOM000248076D
Publication Date: 2016-Oct-24

Publishing Venue

The Prior Art Database


This invention introduces a method called Copy On Access(COA) on virtual file system at linux. That is, the necessary file copy is delayed until actually accessing the file. This method works in master/slave manner. It helps both large system and embedded system employment. For deployment on large system, it speeds up the depolyment procedure: allow slave system to run immediately without wait until all files copied from master node; For deployment on embedded system, it automatically generate a minized linux rootfs image, which is meaningful for embedded linux products where disk space is limited. It also saves operator's large effort to determine what files are necessary in the minized linux rootfs image.