Enable and disable AIX MPIO Multipathing for array devices using vxmpio utility
|Article:TECH174333|||||Created: 2011-11-14|||||Updated: 2012-01-09|||||Article URL http://www.symantec.com/docs/TECH174333|
To use Dynamic Multipathing (DMP) with AIX disk devices, the AIX native multipathing driver (MPIO) must be disabled for those devices so DMP can then claim and control the paths to the device. This is usually accomplished by installing a software package from the specific array vendor that will remove MPIO definitions from the AIX ODM. Some devices do not have vendor supplied Non-MPIO ODM definitions to disable MPIO. This utility is for removing the MPIO definitions for those devices.
The vxmpio utility controls whether the specified type of storage array is controlled by MPIO or is claimed under the Veritas Dynamic Multi-Pathing driver. Use the vxmpio utility to disable or enable MPIO for devices with the specified product ID (pid). You must reboot the system for the changes to take effect. When you disable MPIO, the specified devices are claimed under the Veritas Dynamic Multi-Pathing driver after the reboot. When you enable MPIO, the specified devices are removed from Veritas Dynamic Multi-Pathing control and claimed under MPIO.
Unable to place disk device under DMP control due to already claimed by MPIO. No vendor supplied non-ODM definitions available.
DISK ARRAY : DS5000
OS_LEVEL : AIX 5.3 TL7 or later / AIX 6.1 / AIX 7.1
Product Version : 5.0MP3RP5HF6 or later and 5.1SP1 or later.
Please refer man page of vxmpio,
Use the vxmpio utility.
Available in Volume Manager 5.0MP3RP5HF6 ( 2511672 - need a generic way to disable MPIO for any array without requiring vendor specific ODM predefines )
Also available in 5.1SP1 and later versions of Volume Manager.
Article URL http://www.symantec.com/docs/TECH174333