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    SubjectRe: [PATCH] barrier patch set

    > For IDE, O_DIRECT and O_SYNC can use special "FUA" commands, which
    > don't return until the data is on the platter.

    On modern drives how reliable is this? At one point disk-scrubbing
    software which used FUA (to ensure data was being written to the
    platters) showed that some drives completely ignore this.

    Has the state of things changed significantly that we can assume this
    is very rare or might we need to have to kind of whitelist/blacklist

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