PowerPath is a multipathing software for Unix operating systems from EMC. If you have ever worked or you are going to work in an environment that includes EMC storage systems it is more than sure that PowerPath will be installed in the Unix hosts.
Following are some notes and tips I’ve been creating since the very first time I found Powerpath, of course this isn’t a full user guide but a sort of personal quick reference. I decide to put it here in the hope that it will be helpful to anyone and for my personal use.
Show powermt command version
Display PowerPath configuration.
Check for death paths and remove them.
List all devices.
Remove all devices.
Add a new disk in HP-UX, configure it and save the config:
After a rescan of the disks with ioscan and the creation of the device files with insf run the following command to add the new disk to PowerPath
Now display all the devices and look the for the Logical device ID of the disk.
If everything went fine save the config.
And these are the most common tasks I’ve been doing with PowerPath. I’ll try to put some order into my notes and personal how-to files and write more posts like this one.