On Thu, Jan 08, 2009 at 11:56:43AM -0800, Konrad Rzeszutek wrote:
>
> On Thu, Jan 08, 2009 at 11:31:38AM -0800, Ray Van Dolson wrote:
> > I'm still getting the hang of iSCSI and multipath, so bear with me if
> > this is a FAQ that I've missed...
> >
> > I have a host attaching to an MD3000i via iSCSI/dm-multipath that is
> > working but showing a lot of the following errors in syslog:
> >
> > multipathd: sdc: readsector0 checker reports path is down
>
> You are using the wrong path checker, wrong path priority program,
> and no hardware path checker :-(
>
> Here is what you need in your multipath.conf file:
>
> #
> # DELL :D3000i :: Active-Passive RDAC
> # Note: The same as the IBM DS3300
> #
> device {
> vendor "DELL"
> product "MD3000i"
> product_blacklist "Universal Xport"
> features"1 queue_if_no_path"
> path_grouping_policygroup_by_prio
> hardware_handler"1 rdac"
> path_checkerrdac
> prio"rdac"
> failbackimmediate
> }
>
>
> Thought you might need to replace the 'prio "rdac"' with
> 'prio_callout "/sbin/mpath_prio_rdac" as I think RHEL5/CentOS5 uses
> the old calling convention.
>
> This should get rid of your down errors and show your passive/active path
> properly.
Thanks. I had to remove the features line -- got an Unrecognised
feature request error otherwise.
Thanks again,
Ray
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