公开(公告)号：US20210357365A1

公开(公告)日：2021-11-18

申请号：US17391111

申请日：2021-08-02

Applicant: NetApp Inc.

Inventor： Thomas Rudolf Wenzel

IPC: G06F16/16 ,  G06F16/23 ,  G06F16/11 ,  G06F16/17

Abstract: One or more techniques and/or systems are provided for detecting stale data and/or changed data. For example, a bitmap file may be maintained and mapped to an inofile describing various states of files of a file system. The bitmap file may be populated with bitmap records indicating whether files were accessed, modified, or have other states. The bitmap file may efficiently convey information used to determine whether files have not been accessed recently (e.g., stale data) or were recently modified (e.g., changed data) compared to the inofile because the bitmap file may comprise a fraction of the size of the inofile (e.g., a byte of information may be used to represent various states of one or more files). In this way, instead of evaluating a relatively larger inofile, the bitmap file may be evaluated to efficiently identify stale data for deletion or destaging and/or changed data for backup.

公开(公告)号：US10372676B2

公开(公告)日：2019-08-06

申请号：US14813664

申请日：2015-07-30

Applicant: NetApp Inc.

Inventor： Thomas Rudolf Wenzel

IPC: G06F16/11 ,  G06F16/16 ,  G06F16/23 ,  G06F16/17

Abstract: One or more techniques and/or systems are provided for detecting stale data and/or changed data. For example, a bitmap file may be maintained and mapped to an inofile describing various states of files of a file system. The bitmap file may be populated with bitmap records indicating whether files were accessed, modified, or have other states. The bitmap file may efficiently convey information used to determine whether files have not been accessed recently (e.g., stale data) or were recently modified (e.g., changed data) compared to the inofile because the bitmap file may comprise a fraction of the size of the inofile (e.g., a byte of information may be used to represent various states of one or more files). In this way, instead of evaluating a relatively larger inofile, the bitmap file may be evaluated to efficiently identify stale data for deletion or destaging and/or changed data for backup.

公开(公告)号：US20190317918A1

公开(公告)日：2019-10-17

申请号：US16456485

申请日：2019-06-28

Applicant: NetApp Inc.

Inventor： Thomas Rudolf Wenzel

IPC: G06F16/16 ,  G06F16/23 ,  G06F16/11 ,  G06F16/17

Abstract: One or more techniques and/or systems are provided for detecting stale data and/or changed data. For example, a bitmap file may be maintained and mapped to an inofile describing various states of files of a file system. The bitmap file may be populated with bitmap records indicating whether files were accessed, modified, or have other states. The bitmap file may efficiently convey information used to determine whether files have not been accessed recently (e.g., stale data) or were recently modified (e.g., changed data) compared to the inofile because the bitmap file may comprise a fraction of the size of the inofile (e.g., a byte of information may be used to represent various states of one or more files). In this way, instead of evaluating a relatively larger inofile, the bitmap file may be evaluated to efficiently identify stale data for deletion or destaging and/or changed data for backup.

公开(公告)号：US11573926B2

公开(公告)日：2023-02-07

申请号：US17391111

申请日：2021-08-02

Applicant: NetApp Inc.

Inventor： Thomas Rudolf Wenzel

IPC: G06F16/16 ,  G06F16/23 ,  G06F16/11 ,  G06F16/17

Abstract: One or more techniques and/or systems are provided for detecting stale data and/or changed data. For example, a bitmap file may be maintained and mapped to an inofile describing various states of files of a file system. The bitmap file may be populated with bitmap records indicating whether files were accessed, modified, or have other states. The bitmap file may efficiently convey information used to determine whether files have not been accessed recently (e.g., stale data) or were recently modified (e.g., changed data) compared to the inofile because the bitmap file may comprise a fraction of the size of the inofile (e.g., a byte of information may be used to represent various states of one or more files). In this way, instead of evaluating a relatively larger inofile, the bitmap file may be evaluated to efficiently identify stale data for deletion or destaging and/or changed data for backup.

公开(公告)号：US11080237B2

公开(公告)日：2021-08-03

申请号：US16456485

申请日：2019-06-28

Applicant: NetApp Inc.

Inventor： Thomas Rudolf Wenzel

IPC: G06F16/11 ,  G06F16/16 ,  G06F16/23 ,  G06F16/17

Abstract: One or more techniques and/or systems are provided for detecting stale data and/or changed data. For example, a bitmap file may be maintained and mapped to an inofile describing various states of files of a file system. The bitmap file may be populated with bitmap records indicating whether files were accessed, modified, or have other states. The bitmap file may efficiently convey information used to determine whether files have not been accessed recently (e.g., stale data) or were recently modified (e.g., changed data) compared to the inofile because the bitmap file may comprise a fraction of the size of the inofile (e.g., a byte of information may be used to represent various states of one or more files). In this way, instead of evaluating a relatively larger inofile, the bitmap file may be evaluated to efficiently identify stale data for deletion or destaging and/or changed data for backup.

公开(公告)号：US20170031939A1

公开(公告)日：2017-02-02

申请号：US14813664

申请日：2015-07-30

Applicant: NetApp Inc.

Inventor： Thomas Rudolf Wenzel

IPC: G06F17/30

CPC classification number: G06F16/162 ,  G06F16/125 ,  G06F16/1727 ,  G06F16/2358

Abstract: One or more techniques and/or systems are provided for detecting stale data and/or changed data. For example, a bitmap file may be maintained and mapped to an inofile describing various states of files of a file system. The bitmap file may be populated with bitmap records indicating whether files were accessed, modified, or have other states. The bitmap file may efficiently convey information used to determine whether files have not been accessed recently (e.g., stale data) or were recently modified (e.g., changed data) compared to the inofile because the bitmap file may comprise a fraction of the size of the inofile (e.g., a byte of information may be used to represent various states of one or more files). In this way, instead of evaluating a relatively larger inofile, the bitmap file may be evaluated to efficiently identify stale data for deletion or destaging and/or changed data for backup.

Abstract translation: 提供一个或多个技术和/或系统用于检测陈旧的数据和/或改变的数据。 例如，位图文件可以被维护并被映射到描述文件系统的各种文件状态的变体。 位图文件可以填充位图记录，指示文件是否被访问，修改或具有其他状态。 位图文件可以有效地传达用于确定文件是否最近没有被访问的信息（例如，陈旧的数据）或最近被修改（例如，改变的数据），因为位图文件可以包括大小的一小部分 （例如，一个字节的信息可以用于表示一个或多个文件的各种状态）。 以这种方式，可以评估位图文件而不是评估相对较大的内容，以便有效地识别用于删除或降级的陈旧数据和/或用于备份的改变的数据。