topic Re: Multiple device files for autoloader in Operating System - HP-UX

Multiple device files for autoloader

Steve O'Brien — Fri, 27 Feb 2004 06:21:35 GMT

I have just added a Dell powervault 136 T to a Superdome. The ioscan came up with 15 or so device files for the robot ( /dev/rac/...... ) and the same for each of the 4 drives that the robot will service. I can access the robot and tapes without a problem using the a subsection of the device files and I am considering removing the others. So this is not a major problem to me, I just don't know why it is doing this and it is driving me round the bend. Can anyone help please?

Cheers

Steve

Re: Multiple device files for autoloader

Mark Grant — Fri, 27 Feb 2004 06:26:10 GMT

Do you have multiple paths to the devices i.e several HBA's connecting to the devices through the SAN.

I imagine having several paths to the robot on the one machine could be a bit risky.

Re: Multiple device files for autoloader

Steve O'Brien — Fri, 27 Feb 2004 06:29:31 GMT

Mark,

There is only one path and it is directly connected.

Cheers

Steve

Re: Multiple device files for autoloader

Mark Grant — Fri, 27 Feb 2004 06:32:42 GMT

Sounds peculiar to me. I imagine they'll go away when the machine is re-booted though.

Re: Multiple device files for autoloader

Steve O'Brien — Fri, 27 Feb 2004 06:41:00 GMT

Tried that one. No success.

Re: Multiple device files for autoloader

RAC_1 — Fri, 27 Feb 2004 07:50:16 GMT

If you just one path, checl all files with lssf /dev/rac/file_name" This will give you what exactly that file is.

Also do a ls -il in /dev/rac. You will notice that for few files inode no is same. What that means is the files are same. They are are created like that because one might be as per berkely standard, then other for A&T device.