Patent ID: 9342254
Filing Date: 2016-05-17
CPC Classification: G06F

Claim Text:
1. A method comprising: creating a persistent volume of a data storage device of an electronic device in response to a request for service access to the data storage device, wherein the persistent volume is based on a protected volume also stored at the data storage device, wherein the persistent volume is mountable independently from the protected volume and the protected volume is mountable independently from the persistent volume, and wherein the electronic device includes an overlay cache memory distinct from the persistent volume and the protected volume, and wherein the persistent volume is inaccessible to a user of the electronic device while the persistent volume is mounted; mounting the persistent volume; receiving a write request for a particular file stored at a particular sector; determining where to route the write request based on whether the particular file is excluded from write filtering, wherein the determination is at least partially based on a static exclusion that lists one or more files that are to be excluded from write filtering and a dynamic exclusion that is created at the time of mounting the persistent volume that lists one or more files that are to be excluded from write filtering; filtering the write request including: