Administering DMP using vxdmpadm
The vxdmpadm utility is a command line administrative interface to the DMP feature of VxVM. You can use the vxdmpadm utility to perform the following tasks.
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Retrieve the name of the DMP device corresponding to a particular path.
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Display the members of a LUN group.
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List all paths under a DMP device node, HBA controller or array port.
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Display information about the HBA controllers on the host.
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Display information about enclosures.
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Display information about array ports that are connected to the storage processors of enclosures.
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Display information about devices that are controlled by third-party multipathing drivers.
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Gather I/O statistics for a DMP node, enclosure, path or controller.
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Configure the attributes of the paths to an enclosure.
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Set the I/O policy that is used for the paths to an enclosure.
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Enable or disable I/O for a path, HBA controller or array port on the system.
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Upgrade disk controller firmware.
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Rename an enclosure.
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Configure how DMP responds to I/O request failures.
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Configure the I/O throttling mechanism.
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Control the operation of the DMP path restoration thread.
The following sections cover these tasks in detail along with sample output.
The vxdmpadm command can also be used to change the value of various DMP tunables.
See "Changing the values of tunables" on page 447.
See the vxdmpadm(1M) manual page.
