These pages have some good info;<br><a href="http://www.performancemagic.com/iscsi-xen-howto/">http://www.performancemagic.com/iscsi-xen-howto/</a><br><br><div class="gmail_quote">On 16 February 2010 01:57, Adrian Schmitz <span dir="ltr">&lt;<a href="mailto:aschmitz@lehighgas.com">aschmitz@lehighgas.com</a>&gt;</span> wrote:<br>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">Dominik,<br>
<br>
Below is the config I am using now on one of my Ubuntu Server machines with an MD3000i.. With this config, the i/o errors usually show up for a little bit until rdac disables the necessary paths, and then they go away. Failover works *okay* with this configuration.. if anyone on the list has more experience with this sort of thing, feedback or recommendations on how to improve this config are welcome. Hope this helps..<br>

<br>
-Adrian<br>
<br>
<br>
#/etc/multipath.conf:<br>
<br>
blacklist       {<br>
                device  {<br>
                        vendor DELL*<br>
                        product Universal*<br>
                        }<br>
                device  {<br>
                        vendor Dell*<br>
                        product Virtual*<br>
                        }<br>
                }<br>
<br>
<br>
devices {<br>
<br>
        device {<br>
                vendor                  DELL<br>
                product                 MD3000i<br>
                path_grouping_policy    group_by_prio<br>
                features                &quot;1 queue_if_no_path&quot;<br>
                path_checker            rdac<br>
                prio_callout            &quot;/sbin/mpath_prio_rdac /dev/%n&quot;<br>
                hardware_handler        &quot;1 rdac&quot;<br>
#               prio                    &quot;rdac&quot;<br>
                failback                immediate<br>
                }<br>
        }<br>
<br>
multipaths {<br>
        multipath {<br>
                        wwid 36001e4f0003ceb09000006c848dbbbdb<br>
                        alias testlun<br>
                }<br>
# Additional wwid-to-alias mappings here..<br>
                }<br>
<br>
#END<br>
<div><div></div><div class="h5"><br>
-----Original Message-----<br>
From: <a href="mailto:linux-poweredge-bounces@dell.com">linux-poweredge-bounces@dell.com</a> [mailto:<a href="mailto:linux-poweredge-bounces@dell.com">linux-poweredge-bounces@dell.com</a>] On Behalf Of <a href="mailto:lkml@ds.gauner.org">lkml@ds.gauner.org</a><br>

Sent: Monday, February 15, 2010 9:01 AM<br>
To: <a href="mailto:linux-poweredge@dell.com">linux-poweredge@dell.com</a><br>
Subject: MD3000 on Debian Lenny<br>
<br>
Hi,<br>
I&#39;m trying to get a MD3000 working with Debian Lenny and it looks like a<br>
big mess from my POV. Dell only supports SuSE and RedHat, but I didn&#39;t<br>
expect that it&#39;d be so hard to get this up and running on Debian.<br>
<br>
Can anyone give me some pointers to get this working? I don&#39;t care if I<br>
can use multipath or not. I just want a reliable way to access the disks.<br>
<br>
So far I&#39;ve tryed with the multipath-tools, dm-rdac and porting (kind of)<br>
the dell SM-Tools to Debian, but nothing got me rid of the &quot;I/O errors&quot;<br>
that happen when accessing the exported devices.<br>
<br>
Best Regards,<br>
Dominik<br>
<br>
_______________________________________________<br>
Linux-PowerEdge mailing list<br>
<a href="mailto:Linux-PowerEdge@dell.com">Linux-PowerEdge@dell.com</a><br>
<a href="https://lists.us.dell.com/mailman/listinfo/linux-poweredge" target="_blank">https://lists.us.dell.com/mailman/listinfo/linux-poweredge</a><br>
Please read the FAQ at <a href="http://lists.us.dell.com/faq" target="_blank">http://lists.us.dell.com/faq</a><br>
<br>
_______________________________________________<br>
Linux-PowerEdge mailing list<br>
<a href="mailto:Linux-PowerEdge@dell.com">Linux-PowerEdge@dell.com</a><br>
<a href="https://lists.us.dell.com/mailman/listinfo/linux-poweredge" target="_blank">https://lists.us.dell.com/mailman/listinfo/linux-poweredge</a><br>
Please read the FAQ at <a href="http://lists.us.dell.com/faq" target="_blank">http://lists.us.dell.com/faq</a><br>
</div></div></blockquote></div><br>