[ale] multipath.con for Netapp with RHEL5.7

[Lightner, Jeff]

I don't see "prio ontap" in the multipath doc for the version I'm running on RHEL5.9.

It appears "failback" should be 0 rather than immediate based on that same document (i.e. 0 means immediate, values greater than 0 have deferred failback.

You can see the documentation for your version (which ought to be similar if not the same as the one I have) in this file:
/usr/share/doc/device-mapper-multipath*/multipath.conf.annotated





-----Original Message-----
From: ale-bounces at ale.org [mailto:ale-bounces at ale.org] On Behalf Of Fritz Pietrzak
Sent: Tuesday, September 23, 2014 12:38 PM
To: ale at ale.org
Subject: [ale] multipath.con for Netapp with RHEL5.7

Can anyone spot any issues with this multipath.conf entry for Netapp storage (RHEL5.7) with no ALUA:
device {
                vendor "NETAPP"
                product "LUN"
                path_grouping_policy group_by_prio
                features "1 queue_if_no_path"
                prio ontap
                path_checker directio
                path_selector "round-robin 0"
                failback immediate
                hardware_handler "0"
                rr_weight uniform
                rr_min_io 128
                getuid_callout "/sbin/scsi_id -g -u -s /block/%n"
                }
I am getting some intermittent path failures that aren't showing up on the switch so it is apparently a multipath issue.

Fritz
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