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    SubjectRe: [PATCH][SCS] sd: Read Capacity if (16) fails
    >>>>> "James" == James Bottomley <> writes:

    James> On Wed, 2008-08-06 at 16:34 +0100, Hugh Dickins wrote:
    >> PQual=0 Device_type=0 RMB=1 version=0x00 [no conformance claimed]

    James> We could try using this as the trigger. I assume all DIF
    James> supporting devices must also claim conformance to SPC3/SBC2 or
    James> higher?

    You'd think, wouldn't you?

    Originally I only checked for PROTECT if version was SBC2 or better.
    But as it turns out I have drives that only report SBC and yet they do
    DIF. This old version is apparently reported to prevent problems in
    other operating systems.


    Martin K. Petersen Oracle Linux Engineering

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