Hi Nuno,
I would suggest you to move the rdac specific configuration information
to device section and retry.
Are you running the multipathd command ?
Here is how my rdac configuration looks in multipath.conf
--------------------------
devices {
device {
vendor "IBM"
product "1815"
hardware_handler "1 rdac"
path_checker rdac
failback immediate
path_grouping_policy group_by_prio
prio_callout "/sbin/mpath_prio_tpc /dev/%n"
}
}
-----------------------------
Let me know how it goes,
chandra
On Mon, 2007-09-24 at 14:39 +0100, Nuno Fernandes wrote:
> Hi,
>
> We've bought and IBM BladecenterH and IBM DS4700 storage.
> We are using Redhat Enterprise Linux 5 and we are trying to put multipath
> working.
>
> RHEL5 we are using uses 2.6.18-8.1.3.el5xen. We've ported rdac patch
> (http://kernel.org/pub/linux/kernel/people/agk/patches/2.6/2.6.21/dm-mpath-rdac.patch)
> to RHEL5 kernel. We've also updated multipath-tools to support
> mpath_prio_rdac.
>
> Our multipath.conf is:
>
> devnode_blacklist {
> devnode "^(ram|raw|loop|fd|md|dm-|sr|scd|st)[0-9]*"
> devnode "^hd[a-z]"
> devnode "^cciss!c[0-9]d[0-9]*"
> #USB 4G Flash drive inside HS21
> devnode "sda"
> }
>
> defaults {
> multipath_tool "/sbin/multipath -v0"
> udev_dir /dev
> polling_interval 5
> default_selector "round-robin 0"
> default_getuid_callout "/sbin/scsi_id -g -u -s /block/%n"
> #default_prio_callout "/bin/true"
> failback immediate
> path_checker rdac
> hardware_handler "1 rdac"
> prio_callout "/sbin/mpath_prio_tpc /dev/%n"
> path_grouping_policy group_by_prio
> }
>
> multipaths {
> multipath {
> wwid 3600a0b8000320bea0000048f46e52137
> alias client_data
> }
> }
>
> When we start multipath -v2 it creates multipath devices. I can see 2 active
> paths (active controler) and 2 ghost paths (standby controler).
> When i unplug 2 active fibre that connect the fabric to DS4700, multipath
> reports I/O errors and doesn't failover the controler.
>
> Any ideas?
>
> Thanks for any help
> Nuno Fernandes
>
> --
> dm-devel mailing list
> dm-devel@xxxxxxxxxx
> https://www.redhat.com/mailman/listinfo/dm-devel
--
----------------------------------------------------------------------
Chandra Seetharaman | Be careful what you choose....
- sekharan@xxxxxxxxxx | .......you may get it.
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