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    Subjectbug in libata [was Re: [BUG] ide dma_timer_expiry, then hard lockup
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    On Mon, Jun 18, 2007 at 04:22:38PM -0500, linas wrote:
    > On Mon, Jun 18, 2007 at 10:04:41PM +0100, Alan Cox wrote:
    > > please try using the libata
    > > driver.

    Its worse. I get a hard hang (sysrq doesn't work) during boot,
    just when the system goes to read the partition table.

    Recap: this is an older dual cpu intel box, with a vintage
    HTP366 (and not a newer HPT370) on the system planar. I'm
    testing a configration that works fine with the old ide
    drivers.

    It looks like libata and scsi comes up. The disk is correctly
    recognized; i.e. its brand, model number & size are correctly
    reported. printk shows that it hangs in msdos_partition, trying
    to read the partition table. The drive light is on full-solid,
    again suggesting a possible irq storm.

    Same behaviour for both 2.6.22-rc5-git1 and for 2.6.22-rc4-mm2

    I seem to have trouble turning on scsi logging; it doesn't
    seem to generate any output ...

    Any suggestions on how to proceed?

    --linas
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