From mboxrd@z Thu Jan  1 00:00:00 1970
From: dwu <dwu@redhat.com>
Subject: a question about multipathd and udev
Date: Tue, 21 Oct 2008 16:17:17 +0800
Message-ID: <48FD900D.2010709@redhat.com>
Reply-To: device-mapper development <dm-devel@redhat.com>
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If a block device is added, the udev will run the command multipath to 
add the path to the mp if possible.
Why multipathd also process a path addition event:
 (!strncmp(uev->action, "add", 3)) {
        r = uev_add_path(devname, vecs);
        goto out;
    }

Thanks.