IBM TotalStorage DS6000 Series: Performance Monitoring and Tuning

296 IBM TotalStorage DS6000 Series: Performance Monitoring and Tuning

To configure the HBA properly, see IBM TotalStorage DS6000: Host Systems Attachment

Guide, SC26-7680. Detailed procedures and recommendation settings are written in it. You

also should read the readme and manuals of the driver, BIOS, and HBA. Recommendations

and considerations are written there also.

You can get the driver, BIOS, and HBA related information from the following link.

http://knowledge.storage.ibm.com/servers/storage/support/hbasearch/interop/hbaSearch.do

8.5 Logical Volume Manager for Linux (LVM)

Embedded into the Linux kernel, Sistina’s Logical Volume Manager software is the standard

LVM distribution used by tens of thousands of end users worldwide. LVM is a major building

block in Linux because it enables robust, enterprise-level disk volume management by

grouping arbitrary physical disks into virtual disk volumes. In addition, LVM increases

availability and performance by:

򐂰 Providing online addition and removal of physical devices

򐂰 Dynamic disk volume re-sizing

򐂰 Striping

򐂰 Allowing the IT managers the ability to administer entire storage configurations without

interrupting access to end-user or application data

8.5.1 Implementation

LVM and LVM2 for Linux can be downloaded free of charge at the following Web site:

http://sources.redhat.com/lvm/

http://sourceware.org/lvm2/

In order to use the LVM you will need to make sure that the kernel supports the tool. This will

require another kernel build and re-compilation. Again we refer you to the Redpaper Running

the Linux 2.4 Kernel on IBM Eserver xSeries Servers, REDP0121, available from:

http://www.redbooks.ibm.com

Select Redpapers from the left navigation bar and do a search using the Redpaper form

number REDP0121, which contains detailed steps to add the LVM to the source kernel.

For a more complete discussion on how to use the LVM tool, visit the Web site:

http://tldp.org/HOWTO/LVM-HOWTO/index.html

Note: When configuring the HBA, we strongly recommend to install the newest version of

the driver and BIOS. The newer versions include more effective functions or problem fixes

that improve performance and RAS.

Note: Because LVM is licensed free of charge, there is no warranty for the program, to the

extent permit ted by applicable law. Except when otherwise stated in writing, the copyright

holders and/or other parties provide the program “as is” without warranty of any kind, either

expressed or implied, including, but not limited to, the implied warranties of merchantability

and fitness for a particular purpose. The entire risk as to the quality and performance of the

program is with you. Should the program prove defective, you assume the cost of all

necessary servicing, repair, or correction.