Dell EMC Unity driver in cinder documentation multipath config

[Shatadru Bandyopadhyay]

https://docs.openstack.org/cinder/latest/configuration/block-storage/drivers/dell-emc-unity-driver.html

The doc says to set below config below in default section of mpath conf.
~~~
defaults {
    user_friendly_names no
}

~~~

So find_multipaths is set to "no".

which creates multipath devices for every single block device even if there is only single path including local disks.

When `find_multipaths yes` is set, mpathd creates mpath devices if
 - if there are atleast 2 non blacklisted path to a LUN
 - user manually creates it
 - A path has the same WWID as a multipath device that was previously created (even if that multipath device does not currently exist).

Also for local disks or LUNs which only have one physical path creating a dm device seems like adding an extra layer. Is there any benefit to setting `find_multipaths=no` or known issues of using `find_multipaths=yes`

Config reference :
~~~
https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/dm_multipath/config_file_defaults
~~~

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-----------------------------------
Release: on 2019-01-10 10:26:39
SHA: dbb2e7799dd43cc00896a5fb8f9ec9846d3f2159
Source: https://opendev.org/openstack/cinder/src/doc/source/configuration/block-storage/drivers/dell-emc-unity-driver.rst
URL: https://docs.openstack.org/cinder/latest/configuration/block-storage/drivers/dell-emc-unity-driver.html