Preserving a state using snapshots with selective tuple versioning
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United States of America Patent
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Feb 14, 2017
Grant Date -
Jun 25, 2015
app pub date -
Mar 3, 2015
filing date -
Jun 5, 2012
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Abstract
Selective tuple versioning is used on a file system providing file system snapshots by, receiving a request for updating at least one node and at least a node identification (ID) and associated attributes of the plurality of nodes, generating a new snapshot timestamp indicating the time of the updating, duplicating one of a plurality of rows of the nodes in the file system table into a new one of the rows of the file system table with an end time set equal to a new snapshot timestamp if the snapshot has the snapshot timestamp that is greater than a start time and less than the end time of the nodes, and updating the rows of the nodes in the file system table according to the update request, wherein the start time of the nodes is set equal to the new snapshot timestamp.
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Patent Owner(s)
- INTERNATIONAL BUSINESS MACHINES CORPORATION
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Bachar, Yariv | Kibbutz Ma'abarot, IL | 53 | 873 |
Kuvent, Aviv | Raanana, IL | 16 | 86 |
Levy, Asaf | Rishon Le Zion, IL | 73 | 765 |
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