Removing The Costs Of Indirection in Flash-based SSDs with Nameless Writes

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Removing The Costs Of Indirection in Flash-based SSDs with Nameless Writes

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by Andrea C. Arpaci-dusseau , Remzi H. Arpaci-dusseau , Vijayan Prabhakaran

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BibTeX

@MISC{Arpaci-dusseau_removingthe,
    author = {Andrea C. Arpaci-dusseau and Remzi H. Arpaci-dusseau and Vijayan Prabhakaran},
    title = {Removing The Costs Of Indirection in Flash-based SSDs with Nameless Writes},
    year = {}
}

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Abstract

We present nameless writes, a new interface that obviates the need for indirection in modern solid-state storage devices (SSDs). Nameless writes allow the device to pick the location of a write and only then inform the client above of the decision. Doing so keeps control of block allocation decisions in the device, thus enabling it to perform important tasks such as wear-leveling, while removing the need for large and costly indirection tables. We discuss the proposed interface as well as the requisite device and file-system support. 1

Keyphrases

nameless writes flash-based ssds keep control important task proposed interface new interface requisite device file-system support block allocation decision costly indirection table modern solid-state storage device

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