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    SubjectRe: [BUG] BUG_ON in I/O scheduler, bugme # 288
    On Thu, Jan 23 2003, Dave Olien wrote:
    > Jens, Andrew
    > The group here doing dbt2 workload measurements have hit a couple of
    > problems APPARENTLY in the block I/O scheduler when doing write-intensive
    > raw disk I/O through a DAC960 extremeraid 2000 controller.
    > This wasn't a problem in 2.5.49. It has appeared since then.
    > I've filed a bug on the OSDL bugme database. You can read it at:
    > I've also put a more complete report in my web site:

    A request got on the fifo, but not in the sort tree. This is most likely
    an alias. Ah yes I see it, it can happen when two requests are merged.
    I'll be back with a fix for this soon.

    Jens Axboe

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