e-Links

https://www.centos.org/docs/5/html/5.5/Technical_Notes/ch05s05.html

http://www.yoinsights.com/blog/linux-multipath-concepts-and-configuration/

https://www.learnitguide.net/2016/06/understand-multipath-command-output.html

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

http://fibrevillage.com/storage/463-multipath-queue-if-no-path-issue

https://access.redhat.com/solutions/513933

http://fibrevillage.com/storage/463-multipath-queue-if-no-path-issue