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    SubjectRe: Problem: Bad blocks on IDE disk
    Andrzej Krzysztofowicz wrote:
    >
    > On Mon, 14 Dec 1998, Mark Lord wrote:
    >
    > > Andrzej Krzysztofowicz wrote:
    > > >
    > > > Hi,
    > > > Recently a few bad sectors appeared on my IDE disk. And I observed
    > > > wrong (in my opinion) behaviour of IDE driver while handling the bad
    > > > sectors:
    > > >
    > > > 1. PIO mode
    > > > when multicount is set to non zero value the IDE driver generates
    > > > an error even if reading of a bad sector is not directly requested,
    > > > but the it is located in the
    > > > <block_requested+1>..<block_requested+multicount_value-1>
    > > > area.
    > >
    > > This is not a driver issue, but rather, a filesystem one.
    >
    > I'm rather sure that this is a driver problem. I tested it doing
    ..
    Read-ahead processing happens *before* handing off
    to the low-level (IDE in this case) driver.

    The driver doesn't know anything about readahead.

    Get it now?

    Of course, you could always rework ll_rw_blk.c
    to alter that behaviour.
    --
    mlord@pobox.com

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