EMC PowerPath not built right into kernel?

[Stuart Abramson_2]

I installed PowerPpath 3.0.0 and patch 3.0.2 on an HP-UX 11.0 server that had never had PowerPath before.

The installation was successful, but PowerPath won't work on the server.

When I try to use PowwerPath, I get the following messages:

# powermt display
Cannot open /dev/power2.
Driver state not found.

There is no "power2" in /stand/system, and when I try to rebuild the kernel with the "power2" driver in /stand/system, I get the following error message:

# mk_kernel -s system
WARNING: No such device, tunable, or cdio power2.
Ignoring the following line.
power2
Generating module: krm...
Compiling conf.c...
Generating module: emcp...
Generating module: mp...
Generating module: cg...
Generating module: pn...
Generating module: mpc...
Loading the kernel...
Generating kernel symbol table...

So, what went wrong?

On my other systems, I updated from PowerPath 2.X to 3.0.2, and I have the appropriate drivers, etc, in my kernel.

I am talking to EMC Tech Support, but they are not too good with HP kernels.

Can anyone out there shed some light on this that I explain to EMC Tech Support, please?

[Jim Mallett]

Ugh...page not found....3rd try:

Stuart,

I'm running PowerPath on two 11.00 systems and there is no power2 configured in the kernel. I believe that is referring to the device file /dev/power2. The install does make a kernel modification but the drivers are emcp and it's prerequisite wsio.

Here's what I would start with:
Run an ioscan, then try powermt config.

Is patch PHKL_26452 installed? This is a prerequisite.

Does the file /dev/power2 or any /dev/power* exist? My file is:
crw-r----- 1 root root 245 0x000000 Sep 15 2002 /dev/power
Do a lsdev |grep 245 to see if the device file exists.

There is a startup script for PowerPath, check for it's existence and any output in /etc/rc.log:
/sbin/init.d/emcp
/sbin/rc2.d/S909emcp -> /sbin/init.d/emcp

Not likely it, but you have your /etc/powerpath_registration file in place correct?

And just an FYI: v3.0.3 is now available.

Jim

[Stuart Abramson_2]

Jim:

Thanks for help.

EMC Response CEnter figured it out (2nd guy, not 1st guy.)

My path pointed to /usr/sbin/powermt before it pointed to /sbin/powermt, which is the location of the new PowerPath.

So, I fixed my path, and that fixed my problem.