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    SubjectRe: sata_sil24 broken since 2.6.23-rc4-mm1
    On 9/27/07, Jeff Garzik <jeff@garzik.org> wrote:
    > Torsten Kaiser wrote:
    > > I compared the dmesg form good and bad boots with -rc7-mm1 but could
    > > not see any difference, so do you think that these additional
    > > diagnostics could show a difference?
    > > Or could you suggest any other debugging options I should try?
    >
    > I think since its a reproducible problem, I think it's easiest to get
    > you straight to git-bisect. In this case, that would be

    Sorry, but I don't think that will work.
    It seems that I am able to reproduce the bug, but not reliable. And my
    current best guess to make it happen involves the step "leaf the
    computer powered off for 8 hours".
    I estimate that even with the 8 hour pause only at ~50% of the boots
    one drive fails. So I have no safe point to mark a bisect step as
    'good'.

    > a) start with a known good point (v2.6.22? v2.6.23?) and
    > known bad point (HEAD, aka the most recent commit in
    > libata-dev.git#upstream)

    Known good is for me 2.6.23-rc3-mm1, the first known bad is 2.6.23-rc4-mm1.
    I will try to look at the diff between these revisions some more, but
    the change in sata_sil24.c looked like a perfect match for the
    symptoms I was seeing.

    What I just noticed, as I wanted two re-add the drive to the RAID:
    This time it was not sda, but sdb that was kicked. But otherwise the
    errors are perfectly identical.

    I will try to make a 2.6.23-rc3.5-mm1 to narrow it down some more...

    Torsten
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