The management of MPIO devices is described in the “Managing
http://publib16.boulder.ibm.com/pseries/en_US/aixbman/baseadmn/manage_mpio.htm
Restriction: A point worth considering when deciding between SDD and MPIO is, that the IBM TotalStorage SAN Volume Controller does not support MPIO at this time. For updated information refer to:
Determine the installed SDDPCM level
You use the same command as for SDD, lslpp
SDDPCM software provides useful commands such as:
pcmpath query device to check the configuration status of the devices
pcmpath query adapter to display information about adapters
pcmpath query essmap to display each device, path, location, and attributes
Useful MPIO commands
The lspath command displays the operational status for the paths to the devices, as shown in Example
Example: A-8 lspath command result
{part1:root}/
...
Missing hdisk9 fscsi0 Missing hdisk10 fscsi0 Missing hdisk11 fscsi0 Missing hdisk12 fscsi0 Missing hdisk13 fscsi0
...
Enabled hdisk96 fscsi2 Enabled hdisk97 fscsi6 Enabled hdisk98 fscsi6 Enabled hdisk99 fscsi6 Enabled hdisk100 fscsi6
The chpath command is used to perform change operations on a specific path. It can either change the operational status or tunable attributes associated with a path. It cannot perform both types of operations in a single invocation.
The rmpath command unconfigures or undefines, or both, one or more paths to a target device. It is not possible to unconfigure (undefine) the last path to a target device using the rmpath command. The only way to do this is to unconfigure the device itself (for example, use the rmdev command).
Refer to the man pages of the MPIO commands for more information.
Appendix A. Operating systems specifics | 307 |
