File system image transfer between dissimilar file systems

A computer controlled system, having at least one central processing unit (CPU) and a memory coupled to said CPU, for transferring data from a source file system to a destination file system each file system capable of storing said data in one or more storage blocks, said system includes:

• an image stream generation mechanism configured to read said data from said source file system in accordance with a first storage block arrangement to generate an image stream, said data including one or more block number (BN) pointers, the image stream generation mechanism using one or more of said at least one CPU;
• an image stream writing mechanism configured to write said image stream to said destination file system in accordance with a second storage block arrangement, said first storage block arrangement different from said second storage block arrangement, the image stream writing mechanism using one or more of said at least one CPU;
• and
• a swizzle mechanism configured to swizzle said BN pointers in said storage blocks of said destination file system in accordance with said second storage block arrangement, the swizzle mechanism using one or more of said at least one CPU.

A computer program product including

• a computer usable storage medium having computer readable code embodied therein for causing a computer to transfer data from a source file system to a destination file system each file system capable of storing said data in one or more storage blocks, said computer readable code including:
• computer readable program code configured to cause said computer to effect an image stream writing mechanism configured to write an image stream to said destination file system in accordance with a second storage block arrangement, a first storage block arrangement different from said second storage block arrangement, said data including one or more block number (BN) pointers;
• and
• computer readable program code configured to cause said computer to effect a swizzle mechanism configured to swizzle said BN pointers in said storage blocks of said destination file system in accordance with said second storage block arrangement.