Cache management using shared cache line storage
US-2024241830-A1 · Jul 18, 2024 · US
Method and system for ensuring reliability of cache data and metadata subsequent to a reboot
US9032151B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9032151-B2 |
| Application number | US-27147208-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 14, 2008 |
| Priority date | Sep 15, 2008 |
| Publication date | May 12, 2015 |
| Grant date | May 12, 2015 |
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Abstract
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To ensure that the contents of a non-volatile memory device cache may be relied upon as accurately reflecting data stored on disk storage, it may be determined whether the cache contents and/or disk contents are modified during a power transition, causing cache contents to no longer accurately reflect data stored in disk storage. The cache device may be removable from the computer, and unexpected removal of the cache device may cause cache contents to no longer accurately reflect data stored in disk storage. Cache metadata may be managed during normal operations and across power transitions, ensuring that cache metadata may be efficiently accessed and reliably saved and restored across power transitions. A state of a log used by a file system may be determined prior to and subsequent to reboot of an operating system in order to determine whether data stored on a cache device may be reliably used.
First claim
Opening claim text (preview).
What is claimed is: 1. A method for operating a computer that is coupled to a storage medium and a cache device, the computer comprising an operating system, the method comprising acts of: (A) activating a write recorder component configured for identifying write operations performed to the storage medium which are not performed to the cache device; (B) in response to a request to write a data item to the storage medium at an address, causing the data item to be written to the s…
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Physics · mapped topic
Physics · mapped topic
Physics · mapped topic
Physics · mapped topic
- G06F12/0833Primary
Physics · mapped topic
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Frequently asked questions
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- What does patent US9032151B2 cover?
- To ensure that the contents of a non-volatile memory device cache may be relied upon as accurately reflecting data stored on disk storage, it may be determined whether the cache contents and/or disk contents are modified during a power transition, causing cache contents to no longer accurately reflect data stored in disk storage. The cache device may be removable from the computer, and unexpect…
- Who is the assignee on this patent?
- Iyigun Mehmet, Bak Yevgeniy, Fortin Michael, and 4 more
- What technology area does this patent fall under?
- Primary CPC classification G06F12/0833. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue May 12 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).