Haris, If the multipath driver that you are referring to is the native linux dm-multipath, you just have to find out what DMs are actually mapping your mpath devices (that are symlinks to dm-*) and start iostat to monitor them. []'s Aquini <div class="gmail_quote">On Tue, Jun 8, 2010 at 4:07 AM, Haralambos Makripodis <<a href="mailto:hmakripodis@velti.com">hmakripodis@velti.com</a>> wrote: <blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"> Hi to all Please could you tell me if there is any way of monitor the I/O traffic speed on multipath storage devices? I tried iostat, but as far as I can see does not support multipath devices but just the dm ones. Thank you. /Haris -- redhat-sysadmin-list mailing list <a href="mailto:redhat-sysadmin-list@redhat.com">redhat-sysadmin-list@redhat.com</a> <a href="https://www.redhat.com/mailman/listinfo/redhat-sysadmin-list" target="_blank">https://www.redhat.com/mailman/listinfo/redhat-sysadmin-list</a> </blockquote></div>