Missing mpxio-disable parameter in fp.conf defaults to MPxIO being enabled
Just a short tip about something that was discovered. In fp.conf there is a parameter to enable or disable MPxIO (Solaris Multipathing):
mpxio-disable="no";
This parameter is commonly set automatically through use of the 'stmsboot' command which edits this file for you (when enabling MPxIO for Fiber Channel devices.)
What was discovered is if this parameter is missing, or commented out, that Solaris will default to MPxIO being enabled.
From common/os/sunmdi.c:
/*
* Check for mpxio-disable property. Enable mpxio if the property is
* missing or not set to "yes".
* If the property is set to "yes" then emit a brief message.
mpxio-disable="no";
This parameter is commonly set automatically through use of the 'stmsboot' command which edits this file for you (when enabling MPxIO for Fiber Channel devices.)
What was discovered is if this parameter is missing, or commented out, that Solaris will default to MPxIO being enabled.
From common/os/sunmdi.c:
/*
* Check for mpxio-disable property. Enable mpxio if the property is
* missing or not set to "yes".
* If the property is set to "yes" then emit a brief message.
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