公开(公告)号：US11449389B2

公开(公告)日：2022-09-20

申请号：US15841283

申请日：2017-12-13

Applicant: Apple Inc.

Inventor： Pavel Cisler ,  Pavel Sokolov ,  Dominic B. Giampaolo ,  Eric A. Weiss ,  Christopher A. Wolf

IPC: G06F11/14 ,  G06F16/11 ,  G06F16/16 ,  G06F16/17

Abstract: The embodiments set forth techniques for performing incremental backups of a source file system volume (FSV) managed by a source computing device. According to some embodiments, the source computing device can be configured to generate a current snapshot of the source FSV, where the current snapshot complements a previous snapshot of the source FSV (e.g., established during a previous backup). In some cases, to free up storage space, the data for files belonging to the source FSV can be stripped from the previous snapshot (where metadata for the files remains intact). Next, the source computing device can generate, within a destination storage device, a second snapshot of a destination FSV (that corresponds to the source FSV). In turn, the source computing device identifies changes made to the source FSV based on the current snapshot and the previous snapshot, and reflects the changes within the second snapshot of the destination FSV.

公开(公告)号：US11385816B2

公开(公告)日：2022-07-12

申请号：US16879432

申请日：2020-05-20

Applicant: Apple Inc.

Inventor： Vivek Verma ,  Damien P. Sorresso ,  Pavel Sokolov ,  Pierre-Olivier J. Martel ,  Eric B. Tamura ,  Yoni Baron

IPC: G06F3/06

Abstract: Representative embodiments set forth herein disclose techniques for implementing improved links between paths of one or more file systems. According to some embodiments, techniques are disclosed for establishing a system volume and a data volume within a container. According to other embodiments, techniques are disclosed for establishing a link from a source path of a system volume within a container to a target path of a data volume within the container. According to yet other embodiments, techniques are disclosed for determining whether to allow a file system operation on a data volume of a container based on at least determining whether a target path is associated with a reference to a source path.

公开(公告)号：US10599619B2

公开(公告)日：2020-03-24

申请号：US15721416

申请日：2017-09-29

Applicant: Apple Inc.

Inventor： William R. Stouder-Studenmund ,  Pavel Sokolov

IPC: G06F16/00 ,  G06F16/17 ,  G06F12/109 ,  G06F12/1009

Abstract: The described embodiments set forth techniques for managing the fragmentation of files at a computing device. Specifically, the techniques involve, for a given file, analyzing different extents of the file under a “segment window” basis to identify whether a fragmentation threshold is satisfied between the extents that correspond to the scope of the segment window. In turn, for each segment window that satisfies the threshold level of fragmentation, (1) the data for the extents is copied into an allocated area of contiguous memory, and (2) the extents are updated to reference the copied data. Additionally, the original data referred to by the extents can be freed for usage within the computing device, thereby increasing storage space. In this manner, the overall fragmentation of the file is substantially reduced under the segment window basis, thereby improving the overall performance of the computing device.