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    SubjectRe: [PATCH] Submitting PROMISE IDE Controllers Driver Patch
    Hank Yang wrote:
    > Hello.
    > That's because the linux-kernel misunderstand the raid controller
    > to IDE controller. If do so, The raid driver will be unstable when
    > be loaded.
    > So we must to prevent the raio controller to be as IDE controller
    > here.

    Dear Hank. Please let me elaborate a bit on this, to see whatever
    I understand the issues.

    The Promise controlled is NOT a true self hosted RAID controller.
    It is just a bunch of ATA host chips, which a software add on
    in some ROM exposed as BIOS to Win32 systems, making it possible
    for them to view multiple configurations of the disks as once single
    nice RAID.

    However under linux we have the nice ataraid.c driver, which is
    allowing one to use whichever ATA disks one wan't on whichever
    channels as RAID. The overhead of running the RAID functionality code
    from true nice RAMBUS RAM, in comparision to stincking flash RAM
    on some PCI card behind two bridges is in fact negative ;-).

    It doesn't therefore make any sense for a linux user to use
    the PDC as something elese then a bunch of host chennel chips.

    Or what are your concerns?

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      Last update: 2005-03-22 13:24    [W:0.039 / U:14.212 seconds]
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