This article discusses troubleshooting Dynamic Multi-Pathing (DMP) issues and provides solutions.
After upgrading to DMP 6.0 or later from the Storage Foundation 5.1 release (or earlier), you may see the following changes in functionality:
- Device names listed in the vxdisk list output do not display the Array Volume IDs (AVIDs).
- vxdisk -e list output does not display extended attributes.
- An Active/Passive (A/P) or ALUA array is claimed as Active/Active (A/A).
For Solaris, this behavior may occur because the LUNs are controlled by the native multi-pathing driver, MPxIO.
For AIX, this behavior may be because the LUNs are controlled by the native multi-pathing driver, MPIO.
For information on how to check whether LUNs are controlled by the native multi-pathing driver, either MPxIO or MPIO, see:
Between major releases, Symantec may provide additional array support through updates to the VRTSaslapm package. If you have issues with an updated VRTSaslapm package, Symantec may recommend that you downgrade to a previous version of the Array Support Libraries (ASL)/Array Policy Modules (APM) package.
For information on how to downgrade the ASL/APM package, see:
Downgrading the array support
The Veritas Storage Foundation and High Availability Solutions 6.0.1 Troubleshooting Guide can be found on the SORT website.
