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Extension of write anywhere file system layout

US8990539B2 · US · B2

Patent metadata
FieldValue
Publication numberUS-8990539-B2
Application numberUS-201314077812-A
CountryUS
Kind codeB2
Filing dateNov 12, 2013
Priority dateApr 30, 2004
Publication dateMar 24, 2015
Grant dateMar 24, 2015

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  1. Title

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  2. Abstract

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  4. Key dates

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  5. First independent claim

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  7. Citations and related patents

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Abstract

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A file system layout apportions an underlying physical volume into one or more virtual volumes (vvols) of a storage system. The underlying physical volume is an aggregate comprising one or more groups of disks, such as RAID groups, of the storage system. The aggregate has its own physical volume block number (pvbn) space and maintains metadata, such as block allocation structures, within that pvbn space. Each vvol has its own virtual volume block number (vvbn) space and maintains metadata, such as block allocation structures, within that vvbn space. Notably, the block allocation structures of a vvol are sized to the vvol, and not to the underlying aggregate, to thereby allow operations that manage data served by the storage system (e.g., snapshot operations) to efficiently work over the vvols. The file system layout extends the file system layout of a conventional write anywhere file layout system implementation, yet maintains performance properties of the conventional implementation.

First claim

Opening claim text (preview).

What is claimed is: 1. A data storage system, comprising: a processor configured to execute a storage operating system, the storage operating system, when executed, configured to implement a physical volume including a plurality of data storage devices, wherein the physical volume has a physical address space; one or more logical volumes overlaid onto the physical volume, wherein each logical volume has a separate logical volume address space, wherein the logical volume address…

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Frequently asked questions

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What does patent US8990539B2 cover?
A file system layout apportions an underlying physical volume into one or more virtual volumes (vvols) of a storage system. The underlying physical volume is an aggregate comprising one or more groups of disks, such as RAID groups, of the storage system. The aggregate has its own physical volume block number (pvbn) space and maintains metadata, such as block allocation structures, within that p…
Who is the assignee on this patent?
Netapp Inc
What technology area does this patent fall under?
Primary CPC classification G06F3/0689. Mapped technology areas include Physics.
When was this patent published?
Publication date Tue Mar 24 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).