topic Re: Virtual Disk Mapping to Linux in Operating System - Linux

Virtual Disk Mapping to Linux

nasmel — Sun, 11 Mar 2007 07:11:17 GMT

Hi

I have a virtual disk presented to te linux machine from a HP EVA 4000 storage .
In Linux machine shows multiple paths to the disk (/proc/scsi)
how to identify the exact path and how to make them as a single path\

Re: Virtual Disk Mapping to Linux

Florian Heigl (new acc) — Sun, 11 Mar 2007 08:46:02 GMT

HP offers a multipath kit for linux, I don't have the url here, but I can post it for You tomorrow.

In essence each path is assigned a unique name and those are tied together using udev. The DataCenter Linux working group had more documentation on that, but it was gone last time I checked, so unless you know your ways around udev I suggest you just wait a day :)

florian

Re: Virtual Disk Mapping to Linux

Ivan Ferreira — Mon, 12 Mar 2007 01:15:11 GMT

Here is the link:

http://h18006.www1.hp.com/products/sanworks/softwaredrivers/multipathoptions/linux.html

Re: Virtual Disk Mapping to Linux

Florian Heigl (new acc) — Mon, 12 Mar 2007 10:47:40 GMT

HP LMP (Linux MultiPath) - see http://docs.hp.com/en/8859/udev_sglinuxconfig.pdf for more information

(don't know if this is the same as posted by Ivan, I'm a bit in a rush now)

Re: Virtual Disk Mapping to Linux

Florian Heigl (new acc) — Mon, 12 Mar 2007 10:48:10 GMT

(just checked - no it's not)

Re: Virtual Disk Mapping to Linux

nasmel — Tue, 03 Apr 2007 11:55:16 GMT

my HBA card is Qlogic and my Linux kernel is 2.6.In the above link i can find qlogic driver for 2.4 kernal,will it work with 2.6 kernel or where i can download it

Re: Virtual Disk Mapping to Linux

Rob Leadbeater — Wed, 04 Apr 2007 13:52:24 GMT

Hi,

The drivers available here:

http://h20000.www2.hp.com/bizsupport/TechSupport/SoftwareDescription.jsp?lang=en&cc=us&prodTypeId=12169&prodSeriesId=439556&prodNameId=315741&swEnvOID=1080&swLang=8&mode=2&taskId=135&swItem=co-47070-1

contain versions for both 2.4 and 2.6 kernels. If I recall correctly, you have to remember to select the failover option when installing the drivers...

You might also need to ensure that the firmware on the QLogic cards is at the latest release to enable failover support.

Hope this helps,

Cheers,

Rob