On Jan 21, 2011, at 7:20 PM, Edward Morbius <dredmorb...@gmail.com> wrote:
>
>
> On Fri, Jan 21, 2011 at 3:58 PM, Ross Walker <rswwal...@gmail.com> wrote:
> On Jan 21, 2011, at 6:41 PM, Edward Morbius <dredmorb...@gmail.com> wrote:
>
>> We've been wrestling with this for ... rather longer than I'd care to admit.
>>
>> Host / initiator systems are a number of real and virtualized CentOS 5.5
>> boxes. Storage arrays / targets are Dell MD3220i storage arrays.
>>
>> ...
>
>
> Once this is installed you need to setup dm-multipath, look for
> multipathd.conf in /etc, get the product id and vendor id from dmesg after
> making an initial connection via open-iscsi and use that in the mutipath
> config. Your going to need to use path utility 'rdac' in the config instead
> of tur.
>
> Google is your friend here.
>
> -Ross
>
>
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> cen...@centos.or
>
> /etc/multipath.conf appears to be appropriately configured (we'd installed
> the MDSM host components):
>
> ------------------------------------------------------------------------
> device {
> vendor "DELL"
> product "MD32xxi"
> path_grouping_policy group_by_prio
> prio rdac
> polling_interval 5
> path_checker rdac
> path_selector "round-robin 0"
> hardware_handler "1 rdac"
> failback immediate
> features "2 pg_init_retries 50"
> no_path_retry 30
> rr_min_io 100
> prio_callout "/sbin/mpath_prio_rdac /dev/%n"
> }
> device {
> vendor "DELL"
> product "MD32xx"
> path_grouping_policy group_by_prio
> prio rdac
> polling_interval 5
> path_checker rdac
> path_selector "round-robin 0"
> hardware_handler "1 rdac"
> failback immediate
> features "2 pg_init_retries 50"
> no_path_retry 30
> rr_min_io 100
> prio_callout "/sbin/mpath_prio_rdac /dev/%n"
>
> }
> }
AFAIK the RDAC you have installed looks correct and the config also looks good.
Did you start the multipath service make a connection to each IP and do a
'multipath -ll' and see what shows up?
-Ross_______________________________________________
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