公开(公告)号：US10684918B2

公开(公告)日：2020-06-16

申请号：US15071282

申请日：2016-03-16

Applicant: NetApp Inc.

Inventor： Krishna Murthy Chandraiah setty Narasingarayanapeta ,  Vijay Srinath ,  Rakesh Bhargava M R

IPC: G06F16/00 ,  G06F11/00 ,  G06F16/23 ,  G06F11/14

Abstract: One or more techniques and/or computing devices are provided for restarting a dump backup. For example, a phase offset table is used to track a directory transfer phase offset and a file transfer phase offset of phases of a dump backup. An offset map is used to map inodes, of data being backed up, to offsets within a backup image within which the data is being backed up. The phase offset table and/or the offset map are evaluated using a bytes written value to identify a phase during which the dump backup aborted and to identify a restart point. Accordingly, the dump backup is restarted at the restart point. In this way, the dump backup may be restarted during any phase and/or at any point using the bytes written value, the phase offset table, and the offset map without the need for additional information such as a file history.

公开(公告)号：US20180067669A1

公开(公告)日：2018-03-08

申请号：US15808713

申请日：2017-11-09

Applicant: NetApp, Inc.

Inventor： Ajith Balachandran ,  James Namboorikandathil Joseph ,  Michael R. Eisler ,  Rahul Pradeep ,  Somesh Kumar ,  Vijay Srinath ,  Yuedong Mu

IPC: G06F3/06 ,  G06F11/14 ,  G06F11/00

CPC classification number: G06F3/0619 ,  G06F3/0644 ,  G06F3/065 ,  G06F3/0683 ,  G06F11/00 ,  G06F11/1446 ,  G06F11/1451 ,  G06F11/1458

Abstract: Techniques and components for backing up data are disclosed. A first subset of data units is selected from a plurality of data units of a storage system to create a first partial baseline for backup of the first storage system. The number of data units in the first subset of data units is determined based on a window size parameter n. Data within the storage system that has changed since a previous backup operation are identified. A first backup including the first partial baseline and the first changed data is written to a second storage system. For a data loss event, the techniques include selecting, based on a time of the determined data loss event in combination with n, the first backup and n−1 additional backups, wherein each of the n−1 additional backups include a partial baseline and changed data. The first backup and the n−1 additional backups are written to a third storage system.