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    SubjectRe: ATA 4 KiB sector issues.
    On 03/14/2010 07:26 PM, Denys Vlasenko wrote:
    >>
    >> Yes, but it does squat for a flash disk that wants, say, 256K alignment.
    >
    > 4K makes sense. 256K not so much.
    >
    > 256K alignment is hard to swallow for a lot of reasons anyway.
    > Unless the filesystem packs small files into blocks a-la reiserfs,
    > 256K block filesystems will be very inefficient for a typical
    > storage scenarios.
    >

    Noone has talked about using 256K filesystem blocks. The fact of the
    matter, though, is that both flash and RAID have much larger alignment
    requirements than a mere 4K for optimal performance.

    You might not like it, but that's the way it is.

    -hpa


    --
    H. Peter Anvin, Intel Open Source Technology Center
    I work for Intel. I don't speak on their behalf.



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