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  • 1.  mpio UDID

    Posted Wed February 13, 2008 10:12 AM

    Originally posted by: SystemAdmin


    I am looking for any documents describing mpio UDID generation and its relation to paths. Thank you in advance for any help.


  • 2.  Re: mpio UDID

    Posted Thu February 14, 2008 08:35 AM

    Originally posted by: tony.evans


    Do you have a bit more detail on the query, i.e. what you're looking to resolve / solve / answer?

    AIX uses the ODM to store this info,

    odmget -q attribute="unique_id" CuAt

    will list disks with a UDID or

    odmget -q attribute="ieee_volname" CuAt

    for devices which support the IEEE standard.

    The UDID is generated by the device which owns the disk (as I understand it), so the backend storage device.

    MPIO creates multiple paths to devices with the same UDID's if they're found down different parent devices.

    Message was edited by: tony.evans


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