Linux Redhat

Multiple Powerpath Change for Redhat Linux 5.x

PowerPath Linux Server Change MPIO

This A document that describes how a SAN boot Linux servers running Red Hat Enterprise Linux 5.1 or higher to pass EMC PowerPath MPIO.

1. Copy the correct file / etc / server multipath.conf

(Lab1) # cp / nfs/packages/ga/mpio/RH5/multipath.conf.trpdefault

/ Etc / multipath.conf

1. Boot into single user mode

(Lab1) # init S

1. Delete the swap device

(Lab1) swapoff # / dev/emcpowera3

1. Edit / rc.sysint etc / and remove the In this article, start doing PowerPath

# # # BEGINPP

# Configure and initialize PowerPath.

if [-f etc / init.d /] PowerPath, then

/ Etc / init.d PowerPath /

fi

# # # ENDPP

1. Replace the file with default settings lvm.conf PowerPath

(Lab1) # mv / etc / lvm / lvm.conf.default / etc / lvm / Lvm.conf

1. Edit the fstab file and comment out the line of swap

# / Defaults Dev/emcpowera3 swap swap 0 0

1. Starting the server

(Lab1) # init 6

1. If the server is removed PowerPath package

(Lab1) # grep rpm-qa | EMC

(Lab1) # rpm-erase 5.1.xxxx EMCpower.LINUX

1. Boot from the disk backup

1. Do networking equipment and facilities that are loaded.

1. At the command prompt, type the following command

(Rhel.sh) # mkdir / mnt / sysimage

(Rhel.sh) # mkdir / mnt / sysimage / Starting

(Rhel.sh) # multipath-F

(Rhel.sh) multipath #-V0

(Rhel.sh) mulitipath #-L

1. You should now have more than one device

1. Run the command to create kpartx, the device tree entries

(Rhel.sh) # kpartx-a / dev/mapper/mapth0

1. Activate the volume group

(Rhel.sh) # lvm vgscan-config Unit (filter = ["a map / /", "r /.*/"])"

1. (Rhel.sh) # lvm vgchange-ay-device-config (filter = ["A map / /" r /.*/" "])"

1. Team leads

(Rhel.sh) # mount-t ext3 / dev/mapper/rootvg-lv00 / mnt / sysimage

(Rhel.sh) # mount-t ext3 / dev/mapper/mpath0p1 / mnt / sysimage / boot

(Rhel.sh) # mount-t proc none / mnt / sysimage / proc

(Rhel.sh) # mount / dev sysimage / mnt / / dev

(Rhel.sh) # mount / sys / mnt / sysimage / sys

1. Change to the root directory

(Rhel.sh) # chroot / mnt / sysimage

1. Create table entries dm

(Rhel.sh) # mknod mpath0 dmsetup

(Rhel.sh) # mknod Dmsetup mpath0p1

(Rhel.sh) # mknod mpath0p2 dmsetup

(Rhel.sh) # mknod mpath0p3 dmsetup

1. Edit The file / etc / sysconfig / mkinitrd / multiple and changing the line "MultiPath = yes"

1. Go Directory / Boat

(Rhel.sh) # umount / boot

(Rhel.sh) # mount / dev/mapper/mpath0p1 boot /

1. Edit the file / boot / grub device.map entry and point mpath boot device

Device # This map was produced by Anaconda

(Hd0) / dev/mapper/mpath0

1. Edit the fstab file to point mpath devices

/ Dev/rootvg/lv00 / Ext3 defaults 1 1

/ Dev/mapper/mpath0p1 / boot ext3 defaults 1 2

tmpfs / dev / tmpfs defaults 0 0 SHM

devpts / dev / pts devpts gid = 5, mode = 620 0 0

sysfs / sysfs defaults 0 0 system

proc / proc proc defaults 0 0

/ Swap Dev/mapper/mpath0p3 defaults exchange 0 0

#

/ Dev/mapper/uservg-lv01 / export / home ext3 defaults 1 2

/ Dev/mapper/uservg-lv02 / export / APPL / ext3 defaults 1 2 packages

1. Create a new ramdisk

(Rhel.sh) # mkinitrd-f / boot/HP-initrd-2.6.18-53.1.6.el5.img 2.6.18-53.1.6.el5

1. Build the GRUB

(Rhel.sh) # grub-install / dev/mapper/mpath0

1. Disconnect the hot-spare

1. Start Server

About the Author

I’ve been in the IT industry for over 15 years, and I am currently a System Administrator specializing in AIX, Solaris, and Redhat.

Anthony Cicone
www.agccomputerservices.com

Serious Red Hat Linux Commercial

Linux Mandrake/RedHat 6.0 Installation Overview [VHS] $19.95 This 75 minute installation video walks the user step by step through the four installation methods available in the Mandrake 6.x distribution. It has the following sections: 1) Installing Over Windows. 2) Making Boot Disk. 3) Making FIPS Disk. 4) Using FIPS to Modify Partitions. 5) Custom Installation 6) Workstation Installation 7) Server Installation. Common Installation. 9) Post Installation…

Official Redhat Linux 4.0 …

SUNSPIRE STUDIOS Tux Racer ( Windows ) $8.95 …

redhat 701 deluxe workstation $42.89 Red Hat Deluxe Workstation is an ideal introduction to Linux for new users. In addition to the Red Hat Linux operating system, Deluxe Workstation gives you comprehensive guides, office suites, games, and services to help you get started. This version incorporates the 2.4 kernel that has been thoroughly tested by Red Hat, and also features improved support for hot-pluggable USB devices and recordab…

Gilsson USB to Serial DB9 Adapter for Garmin $18.50 Designed for GPS users without serial ports on their computers, Gilsson’s USB to Serial DB9 (RS232) Adapter will connect your Garmin or Gilsson PC interface cables to your computer’s USB port. This product has been specifically chosen and tested to work with Garmin GPS receivers. Necessary drivers are included in the installation CD or can be downloaded here. Comparable to Garmin #010-10310-00. …

Incoming search terms for the article:

• linux remove mpath device
• powerpath linux multiples volumes
• kpartx howto
• remove mpath
• powerpath rhel6
• rhel6 boot multipath
• rhel 6 mkinitrd
• RHEL6 Boot from SAN
• linux mpath
• RHEL6 powerpath
• rhel6 mkinitrd
• emc powerpath rhel6
• Linux Redhat
• linux remove mpath
• mkinitrd rhel 6
• mpath0p1
• powerpath for rhel6
• rhel 6 single user mode
• rhel vgchange
• RHEL5 multipath boot dmsetup create
• how to remove mpath
• kpartx redhat
• mkinitrd
• mkinitrd mpath
• redhat linux
• redhat mpath
• RHEL grub boot Error 21 with mpath
• rhel kpartx
• how to remove mpath in linux
• linux delete mpath
• lvm conf powerpath
• lvm filter powerpath
• mkinitrd rhel6
• Powerpath Redhat 6
• redhat mkinitrd multipath
• rhel 6 multipath
• single mode linux RHEL
• what is /mnt/sysimage rhel5
• /dev device creation server boot redhat
• anaconda multipath conf
• emc powerpath linux
• emc powerpath RHEL 6
• emcpower RHEL6
• grub mpath
• how to attach SAN disk to rhel6
• kpartx grub
• kpartx multipath SAN
• linux kpartx configuring SAN
• linux mpath anaconda
• lvm single usermode howto
• mkinitrd powerpath
• mpath boot option
• mpath grub conf
• mpath mkinitrd redhat
• mpath mount
• powerpath for rhel 6
• powerpath mkinitrd
• red hat linux
• redhat 6 powerpath
• remove mpath linux
• rhel 6 boot from san
• rhel 6 grub conf
• rhel plymouth themes
• rhel6 multipath
• rhel6 multipath conf
• rhel6 sanboot
• /dev/mapper redhat fstab
• ADD DISKS WITH MPATH REDHAT
• anaconda linux
• boot from san rhel 6
• cache:eTjlJMZqmnwJ:www simplicitylinux com/linux-redhat/ how to clone rhel5 LVM bootdisk to SAN
• changing rhel6 plymouth themes
• configuring multipath rhel linux
• delete san device linux powerpath
• dell kpartx -a
• device map RHEL6 not getting updated with SAN boot
• dm-mapper emc
• dmsetup mknod
• dmsetup red hat 5 enterprise
• dmsetup remove mpath
• emc multipath conf
• emc powerpath command redhat
• emc powerpath for redhat linux 6
• filter SAN disks lvm conf
• fstab /dev/mapper/mpath0
• grub multipath redhat
• grub-install /dev/mapper/mpath0
• grub-install mpath rhel
• grub-install mpath0
• How do I install Red Hat Enterprise Linux 5 to boot from SAN using device-mapper-multipath?
• how remove san disk from os linux powerpath
• how to boot rhel 6 on single user mode
• how to install grub on red hat San disk
• how to map lvm in fstab
• how to mount multipath fstab
• installing and booting redhat linux on SAN
• kickstart post mount mpath
• kpartx red hat
• Linux boot single mode Red heat 5 1
• Linux disable mpath grub