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Re: [dm-devel] Problem with multipath and kernel 2.6.18-92.el5

On Thu, 2008-05-29 at 14:45 +0200, Twardy Sandrine wrote:
> Hello,
> I have update my server to kernel 2.6.18-92.el5, and multipath not work 
> because a module dm_hp_sw is automatically load. But this module seem 
> don't work for my EVA 5000 HSV110.
> i would like not load this module, but the command multipath -v 3 load 
> this module why ? Can I dont load this module ?
> Thanks a lot for your responses

What are the vendor and product strings? (cat /sys/block/<devicename>/device/vendor and

Could be there's an incorrect entry in hwtable.c causing the module to load incorrectly.

You should be able to override an incorrect entry from hwtable.c by putting a new entry
into /etc/multipath.conf for your device.  To specify a null hwhandler, use something like:
device {
                vendor                  "COMPAQ"
                product                 "MSA1000 VOLUME"
                path_grouping_policy    group_by_prio
                hardware_handler        "0"
                path_checker            hp_sw
                features                "1 queue_if_no_path"
                prio_callout            "/sbin/mpath_prio_hp_sw /dev/%n"
                failback                immediate

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