Methods and structure for using region locks to divert I/O requests in a storage controller having multiple processing stacks

US9268695B2 · US · B2

Patent metadata
FieldValue
Publication numberUS-9268695-B2
Application numberUS-201213711885-A
CountryUS
Kind codeB2
Filing dateDec 12, 2012
Priority dateDec 12, 2012
Publication dateFeb 23, 2016
Grant dateFeb 23, 2016

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Abstract

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Methods and structure within a storage controller for using region locks to efficiently divert an I/O request received from an attached host system to one of multiple processing stacks in the controller. A region lock module within the controller allows each processing stack to request a region lock for a range of block addresses of the storage devices. A divert-type lock request may be established to identify a range of block addresses for which I/O requests should be diverted to a particular one of the multiple processing stacks.

First claim

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What is claimed is: 1. A storage controller adapted to couple with one or more host systems and adapted to manage data on one or more storage devices coupled with the storage controller, the storage controller comprising: a fast path circuit adapted to process an I/O request formatted for fast path processing received from an attached host system; a firmware processing stack operating on a processor of the controller, the firmware processing stack adapted to process any format o…

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What does patent US9268695B2 cover?
Methods and structure within a storage controller for using region locks to efficiently divert an I/O request received from an attached host system to one of multiple processing stacks in the controller. A region lock module within the controller allows each processing stack to request a region lock for a range of block addresses of the storage devices. A divert-type lock request may be establi…
Who is the assignee on this patent?
Lsi Corp, Avago Technologies General Ip
What technology area does this patent fall under?
Primary CPC classification G06F3/061. Mapped technology areas include Physics.
When was this patent published?
Publication date Tue Feb 23 2016 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).