Patent ID: 9305071
Filing Date: 2016-04-05
CPC Classification: G06F

Claim Text:
1. A method of providing virtual storage processor (VSP) mobility and induced file system format migration, the method comprising: receiving, by processing circuitry, a VSP move command from a user, the VSP move command specifying (i) a source VSP which includes multiple source file systems which store data in a source file system format using block pointers having a first block pointer size defined by the source file system format, (ii) a destination, and (iii) a destination file system format which is different than the source file system format; in response to the VSP move command, forming, by the processing circuitry, a destination VSP which includes multiple destination file systems; while the source VSP is accessed by a set of host computers, copying, by the processing circuitry, data from the multiple source file systems of the source VSP to the multiple destination file systems of the destination VSP, the multiple destination file systems storing the copied data in the destination file system format using block pointers having a second block pointer size defined by the destination file system format, the second block pointer size being different than the first block pointer size; and after the data is copied from the multiple source file systems to the multiple destination file systems, synchronizing, by the processing circuitry, state changes between the source VSP and the destination VSP.