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    SubjectRe: Problem with Qlogic 2200 and 2.4.20
    Przemysław Maciuszko wrote:
    > Hello.
    > I have a strange problem with 2.4.20 (also 2.4.19) and Qlogic FC 2200.
    >
    > The machine runs test news-server, so disk load is high.
    > After few minutes of running I get the following errors on console:
    >
    > qlogifc0 : no handle slots, this should not happen
    > hostdata->queued is 19, in_ptr: 63
    > qlogifc0 : no handle slots, this should not happen
    > hostdata->queued is 19, in_ptr: 6a
    > qlogifc0 : no handle slots, this should not happen
    > hostdata->queued is 19, in_ptr: 70
    >
    > and so on.

    This is a long standing problem. Andrew Patterson gave a patch on the list:

    http://groups.google.com/groups?selm=linux.scsi.1019759258.2413.1.camel%40lvadp.fc.hp.com

    Without this patch, 2.4.18 would lock up in a few minutes syncing a software
    raid. With the patch, it has been running multiple megabytes I/O a second for
    months. And yes it can sync software RAIDs too.

    The driver seems to be working for some people without the patch, but the
    problem appears so quickly on some systems that it is strange the fix has not
    been incorporated yet. In my case, I tested with ISP2200 cards and a JBOD with
    Cheetah 10k4 and 10k5 drives.


    Thomas

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