公开(公告)号：US10515055B2

公开(公告)日：2019-12-24

申请号：US14859009

申请日：2015-09-18

申请人： NetApp, Inc.

发明人： Bharadwaj Vellore Ramesh ,  Venkata Vijay Chaitanya Challapalli ,  Dnyaneshwar Pawar ,  Alok Sharma

IPC分类号： G06F16/00 ,  G06F16/174 ,  G06F16/13 ,  G06F3/06

摘要： It is determined that a first data unit is to be written to a storage device and that the first data unit is associated with a first attribute. In response to determining that the first data unit is associated with the first attribute, a first identifier is selected from a first identifier space and the first identifier is associated with the first data unit. It is determined that a second data unit is to be written to the storage device and that the second data unit is associated with the second attribute. In response to determining that the second data unit is associated with the second attribute, a second identifier is selected from a second identifier space and the second identifier is associated with the second data unit.

公开(公告)号：US20170083537A1

公开(公告)日：2017-03-23

申请号：US14859009

申请日：2015-09-18

申请人： NetApp, Inc.

发明人： Bharadwaj Vellore Ramesh ,  Venkata Vijay Chaitanya Challapalli ,  Dnyaneshwar Pawar ,  Alok Sharma

IPC分类号： G06F17/30

CPC分类号： G06F16/1748 ,  G06F3/0601 ,  G06F16/137

摘要： It is determined that a first data unit is to be written to a storage device and that the first data unit is associated with a first attribute. In response to determining that the first data unit is associated with the first attribute, a first identifier is selected from a first identifier space and the first identifier is associated with the first data unit. It is determined that a second data unit is to be written to the storage device and that the second data unit is associated with the second attribute. In response to determining that the second data unit is associated with the second attribute, a second identifier is selected from a second identifier space and the second identifier is associated with the second data unit.

公开(公告)号：US10324652B2

公开(公告)日：2019-06-18

申请号：US15631296

申请日：2017-06-23

申请人： NetApp, Inc.

发明人： Venkata Vijay Chaitanya Challapalli ,  Ravi Lingappa Shamanna ,  Kumaran Nagappan ,  Santhosh Selvaraj

IPC分类号： G06F3/06 ,  G06F11/20

摘要： Methods, non-transitory computer readable media, and computing devices that facilitate copy-free data migrations across filesystems. In a first step with this technology, a first set of filesystem metadata associated with a first filesystem is received. At least a portion of the first set of filesystem metadata is retrieved from a first data structure associated with the first filesystem. The first set of filesystem metadata includes a first identifier and a physical location associated with user data. A second identifier, associated with a second filesystem having a different addressing scheme than the first filesystem, is generated from at least the first identifier. A second set of filesystem metadata including the second identifier and the physical location is stored such that at least the second identifier is stored in a second data structure associated with the second filesystem.

公开(公告)号：US20180373457A1

公开(公告)日：2018-12-27

申请号：US15631296

申请日：2017-06-23

申请人： NetApp, Inc.

发明人： Venkata Vijay Chaitanya Challapalli ,  Ravi Lingappa Shamanna ,  Kumaran Nagappan ,  Santhosh Selvaraj

IPC分类号： G06F3/06

摘要： Methods, non-transitory computer readable media, and computing devices that facilitate copy-free data migrations across filesystems. In a first step with this technology, a first set of filesystem metadata associated with a first filesystem is received. At least a portion of the first set of filesystem metadata is retrieved from a first data structure associated with the first filesystem. The first set of filesystem metadata includes a first identifier and a physical location associated with user data. A second identifier, associated with a second filesystem having a different addressing scheme than the first filesystem, is generated from at least the first identifier. A second set of filesystem metadata including the second identifier and the physical location is stored such that at least the second identifier is stored in a second data structure associated with the second filesystem.

公开(公告)号：US09170748B2

公开(公告)日：2015-10-27

申请号：US14509892

申请日：2014-10-08

申请人： NetApp, Inc.

发明人： Bharadwaj Vellore Ramesh ,  Venkata Vijay Chaitanya Challapalli ,  Rohini Raghuwanshi ,  Praveen Killamsetti ,  Sudhanshu Gupta

IPC分类号： G06F7/00 ,  G06F17/00 ,  G06F3/06 ,  G06F11/14

CPC分类号： G06F3/0641 ,  G06F3/0619 ,  G06F3/067 ,  G06F11/1453

摘要： A method performed in a network storage system, the method including receiving a plurality of data blocks at a secondary storage subsystem from a primary storage subsystem, generating a first log that includes a first plurality of entries, one entry for each of the data blocks, in which each entry of the first plurality of entries includes a name for a respective data block and a fingerprint of the respective data block, receiving metadata at the secondary storage subsystem from the primary storage subsystem, the metadata describing relationships between the plurality of blocks and a plurality of files, generating a second log that includes a second plurality of entries, and merging the first log with the second log to generate a change log.