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    SubjectRe: LibPATA code issues / 2.6.15.4
    Tejun Heo wrote:
    ..
    >> These may be unsafe in general, unless we tag controllers as
    >> FUA-capable and NON-FUA-capable, in addition to tagging the drives.
    >
    > All sii controllers and piix/ahci seem to handle FUA pretty ok. And
    > yeah, we may have to create controller blacklist too.

    Or maybe a whitelist instead, since nearly all existing hardware
    pre-dates FUA commands.

    Or maybe just have a libata function to test whether the FUA commands
    actually work or not, before enabling them for general use.
    *That* could be a much better approach, given the large number of
    possible drive/controller combos, and it cuts down on the maintenance
    headache of having to list everything on a list somewhere.

    > BTW, can you let me know what drive we're talking about now (model name
    > and firmware revision)?

    David: we need to see the output from "hdparm --Istdout /dev/sda
    (or whichever drive it was that was failing on your system).

    Cheers
    -
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