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    SubjectRe: PATCH: cdrecord: avoiding scsi device numbering for ide devices
    On Fri, Aug 13 2004, Måns Rullgård wrote:
    > Bill Davidsen <> writes:
    > > Con Kolivas wrote:
    > >
    > >> It was a hard lockup and randomly happened during a cd write,
    > >> creating my first coaster in a long time... in rt mode ironically
    > >> which is how it is recommended to be run. So I removed the foolish
    > >> superuser bit and have had no problem since. Yes it was unaltered
    > >> cdrecord source and it was the so-called alpha branch and... Not
    > >> much else I can say about it really?
    > >
    > > I said I'd never seen this (true), but it could happen if you were
    > > burning an audio CD using the ide-scsi or ATA: interface. In 2.6 the
    > > ATAPI: interface uses DMA. I don't know what the program does if you
    > > just say dev=/dev/hdx,

    This is only true for recent 2.6 kernels.

    > Whatever it does, it doesn't load the system noticeably.

    ATA uses SG_IO. Bill should re-read most of this thread as he is
    repeating what others have said and have been corrected on (not just
    this mail, btw).

    Jens Axboe

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