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    SubjectRe: Fwd: libata-pmp patch for 3.2.x and later for eSATA Port Multiplier Sil3726
    On Fri, Mar 23, 2012 at 1:55 AM, ANEZAKI, Akira
    <> wrote:
    > Hello Gwendal,
    > Thank you for your information.
    > I think ata8 might different from other 3 PMPs. I'll try to update all
    > firmware but it is running resync on broken RAID now. So I can't do it soon.
    > By the way, both of ata8 and ata9 loses some HDDs also. Are those
    > affected by PMPs on ata7 and ata10? Why 3.1.x driver can work?
    > Best Regards,
    > Akira
    >> Now I see your problem. Indeed on ata7, ata10, we have a problem.
    I should have said ata7-ata10. The PMP on these 4 enclosures do not
    like SRST at all.
    It works with 3.1.x because it does not send SRST with this PMP; but
    as I said before, that is not a good behavior [no staggered spin-up,
    problem with drives slow to spin-up]

    >> I notice however some messages I did not see before:
    >>>> [    4.856382] ata7.15: Port Multiplier 1.1, 0x1095:0x3726 r23, 6 ports, feat 0x1/0x9
    >>>> [    4.858742] ata7.00: hard resetting link
    >>>> [   14.843039] ata7.00: softreset failed (timeout)
    >>>> [   17.836402] ata7.15: qc timeout (cmd 0xe4)
    >> The later indicates that the PMP is stuck and the host can not read
    >> its internal register.
    >> Is it possible that the PMP in these 4 enclosures you are using have a
    >> different firmware than the other ones?
    >> Firmware 1.0114 is available at:
    >> From the release notes:
    >> """- Fix SRST and initial two RegFIS Problem."""
    >> Gwendal.
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