Method for efficiently storing data
US-2024370165-A1 · Nov 7, 2024 · US
De-duplication aware secure delete
US9104839B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9104839-B2 |
| Application number | US-201313740735-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 14, 2013 |
| Priority date | Jan 14, 2013 |
| Publication date | Aug 11, 2015 |
| Grant date | Aug 11, 2015 |
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Abstract
Official abstract text for this publication.
A mechanism is provided in a data processing system for de-duplication aware secure delete. Responsive to receiving a secure delete request for a file, the mechanism identifies a list of file blocks to be securely deleted from a physical disk device. Responsive to determining at least one virtual block of another file refers to a given disk block corresponding to a file block in the list, the mechanism copies the given disk block to generate a copied disk block in the physical disk device and updates a pointer of the at least one virtual block to refer to the copied disk block. The mechanism writes a secure delete pattern for each file block in the list of file blocks to a disk block in the physical disk device without performing de-duplication processing.
First claim
Opening claim text (preview).
What is claimed is: 1. A method, in a data processing system, for de-duplication aware secure delete, the method comprising: responsive to receiving a request for a secure delete operation for a file, identifying a list of file blocks to be securely deleted from a physical disk device; responsive to determining at least one virtual block of another file refers to a given disk block corresponding to a file block in the list, getting a free disk block from a de-duplication table a…
Assignees
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Classifications
- G06F3/0641Primary
Physics · mapped topic
- G06F21/00Primary
Physics · mapped topic
Physics · mapped topic
Physics · mapped topic
Physics · mapped topic
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Frequently asked questions
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- What does patent US9104839B2 cover?
- A mechanism is provided in a data processing system for de-duplication aware secure delete. Responsive to receiving a secure delete request for a file, the mechanism identifies a list of file blocks to be securely deleted from a physical disk device. Responsive to determining at least one virtual block of another file refers to a given disk block corresponding to a file block in the list, the m…
- Who is the assignee on this patent?
- IBM
- What technology area does this patent fall under?
- Primary CPC classification G06F3/0641. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Aug 11 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).