How to check the bus number whit persistent device

[merieux]

Hi ,

Whith the legacy device ( cxtxdx ) it was easy to check the bus/controler number. Now with the persistent device ( diski ) is not so easy .

The method consist to identify the hardware path via an ioscan command .

I would like to know if all the systems have a common syntax for the Hardware path . I have to get the Hardware path, via a script, and extract the controller/bus number .

on my system the disk disk9 have an hardware path of 0/3/2/0.0x1.0x0 . The controller/bus number is 3 . Is anyone can confirm me that the sysntax of the hardware path is already the same on all the kind of HP system. If you have a command which give me the bus/controller number , it is also ok .

Thank you for your replies ,
Regards

[Torsten.]

>> I would like to know if all the systems have a common syntax for the Hardware path .


Unfortunately not nowadays (but it was years ago). This is pretty different from one model to the other.

See the user guide for details.

[merieux]

thanks ,

But how to be sure to have the controller/bus number whitout chck my tools on all HP systems ?

[Emil Velez]

you can correlate the lecacy device files which still exist to agile device files with

ioscan -m dsf

That shows you the correlation and shows all of the paths

[Jupinder Bedi]

ioscan -m dsf is correct and also if you have powerpath you can check it by using


powermt display dev=all

[merieux]

Yes ,

Right now the legacy devices are always supported. HP plan to suppress the support of the devices in the next release.

I would like to have a solution which allow me to don't use the legacy device even if it is only for consultation purpose .

About powerpath : It depend of the system , not always. And the goal of persistent devices is to use natives mutipahthing functionalities provided by the kernel. So this is not a solution for me .

[Torsten.]

If you see this path

0/3/2/0.0x1.0x0

the internal path 0/3/2/0 will remain.

As said, what this path means depends on the server model.

[sujit kumar singh]

hi

you can run

ioscan -m dsf
ioscan -m hwpath


do a comparison and you shall get all informations as wished.

regards
Sujit