Solve the problem of multi-path in RHEL5.6

Find a multi-path software on the Redhat website and provide related technical instructions. Under 2Redhat

FirstRedhatFindPathOfSoftware, And relatedTechnologyNote:

Http://www.redhat.com/docs/manuals/csgfs/browse/4.6/DM_Multipath/index.html

In fact, in the IBMDS3524--X3850 environment, this software cannot converge much normallyPath.

2 Multiple RedhatPathSolution-- IBMRDAC

2.1IBMDownload the RDAC software from the website. Several factors need to be considered for the software version:

A.The model of the storage machine. This is DS3524.

B.The Redhat version of kernel.

Shell> uname-

LinuxWd01 2.6.18-53. el5PAE #1 SMP Mon Nov 120:55:09 EST 2007 i686 i686 i386 GNU/Linux

Specific to 2.6.18. Find the kernel version in the txt file on the software download page.

Reference link:

Https://www-304.ibm.com/systems/support/supportsite.wss/selectproduct? Taskind = 2 & brandind = 5000028 & familyind = 5329626 & typeind = 0 & modelind = 0 & osind = 0 & psid = sr & continue. x = 1 & matrix = Y # Storage % 20 Manager

2.2InstallProcedure

Shell> wgethttp: // www.lsi.com/rdac/rdac-LINUX-09.03.0B05.0251-source.tar.gz

Shell> tar zxvf rdac-LINUX-09.02.C5.13-source.tar.gz.

Shell> cd linuxrdac-09.03.0C05.0251

Shell> make

Shell> make install

The installation process takes a long time to produce a mpp-2.6.18-8.el5Xen. Imgfile. You will be prompted to modify the startup list file.

2.3 Change the startup list file:

Shell> vi/boot/grub. conf

Point the launch option to the mpp-2.6.18-8.el5xen.img.

To avoid startup failure due to errors, you can add a title below:

Before change:

Default = 0

Timeout = 5

Splashimage = (hd0, 0)/grub/splash.xpm.gz

Hiddenmenu

Title CentOS (2.6.18-53. el5PAE)

Root (hd0, 0)

Kernel/vmlinuz-2.6.18-53.el5PAE ro root = LABEL =/

Initrd/initrd-2.6.18-53.el5PAE.img

After modification:

Default = 1

Timeout = 5

Splashimage = (hd0, 0)/grub/splash.xpm.gz

Hiddenmenu

Title Red Hat Enterprise LinuxServer(2.6.18-53. el5PAE)

Root (hd0, 0)

Kernel/vmlinuz-2.6.18-53.el5PAE ro root = LABEL =/

Initrd/initrd-2.6.18-53.el5PAE.img

Title Red Hat Enterprise Linux Server (2.6.18-53. el5PAE) withMPP support

Root (hd0, 0)

Kernel/vmlinuz-2.6.18-53.el5PAE ro root = LABEL =/

Initrd/mpp-2.6.18-53.el5PAE.imgiet

Module/mpp-2.6.18-8.el5xen.img

2.4 restart after completion

Shell> reboot

After successful startup, check pvs and so on.PathError.

2.5 uninstall:

Shell> cd linuxrdac-09.03.0C05.0251

Shell> make uninstall

Shell> make clean

Kernel: Buffer I/O error on device sdd, logical block3655167

Kernel: end_request: I/O error, dev sdd, sector 2924441336

Kernel: end_request: I/O error, dev sdd, sector 8

Kernel: end_request: I/O error, dev sdd, sector 8

Kernel: end_request: I/O error, dev sdd, sector 2924441584

Kernel: end_request: I/O error, dev sdd, sector 2924441584

Kernel: end_request: I/O error, dev sdd, sector 2924441592