INSTALLING  RDAC ON RHEL 4 (2.6 kernel) - 8/23/2017

00] Low level HBA driver should have been previously built/installed.
    (in our case, install QLA2xxx drivers before installing RDAC)

0]  /etc/modprobe.conf  (RHEL 2.6)

alias eth0 tg3
alias eth1 tg3
alias scsi_hostadapter mptbase
alias scsi_hostadapter1 mptscsih
alias scsi_hostadapter2 qla2xxx_conf
alias scsi_hostadapter3 qla2xxx
alias scsi_hostadapter4 qla2400
alias usb-controller ohci-hcd
options qla2xxx ql2xfailover=0
options scsi_mod max_luns=255    # <<< NOT max_scsi_luns

### BEGIN MPP Driver Comments ###
# Additional config info can be found in /opt/mpp/modprobe.conf.mppappend.
# The Above config info is needed if you want to make mkinitrd manually.
# Please read the Readme file that came with MPP driver for building RamDisk manually.
# Edit the '/etc/modprobe.conf' file and run 'mppUpdate' to create Ramdisk dynamically.
### END MPP Driver Comments ###
remove qla2xxx /sbin/modprobe -r --first-time --ignore-remove qla2xxx && { /sbin/modprobe -r --ignore-remove qla2xxx_conf; }


1]  Copy/FTP the tarred RDAC installation file to /rdac

2]  tar -zxvf rdac-LINUX-xx.xx.xx.xx-source.tar.gz

    [ex:  tar -zxvf rdac-LINUX-09.01.B5.28-source.tar.tgz ]

    creates the /rdac/linuxrdac-09.01.B5.28  directory

3]  cd /rdac/linuxrdac-09.01.B5.28

4]  make clean

    make 

5]  make uninstall

    make install

6]  Add an mpp entry in the /boot/grub/ZZZ.1st such as:

    
7]  Reboot the system, selecting the MPP kernel

8]  AS A PRECAUTION, AS I'V SEEN IT.

    Examine file /opt/mpp/modprobe.conf.mppappend

    if it exists, replace:

        "options scsi_mod max_report_luns=256"

    with:

        "options scsi_mod max_luns=255"

9]  run  lsmod to ensure stack is in proper order:

    mppVhba      << omitted if RDAC not installed
    qla2400
    qla2xxx
    qla2xxx_conf
    mptscsih
    mptbase
    mppUpper     << omitted, if RDAC not installed
    sg
    sd_mod
    scsi_mod  << bottom of the lsmod listing

10] run  ls -1R /proc/mpp  to see the RDAC LUNS

11] If any changes were made to either the RDAC configuration
    file:  /etc/mpp.conf  or the persistant binding file:
    /var/mpp/devicemapping   then run:  mppUpdate

    to rebuild the RAMdisk image.

12] When an RDAC uninstall is done, the old mpp.conf file is
    saved as /etc/mpp.conf.mppsave

    To preserve any S2ToS3Key  or  hostID data, it must
    be copied from /etc/mpp.conf.mppsave to the newly
    created  /etc/mpp.conf  file if you wish to save it.   

AFTER UPDATING THE KERNEL, the MPP initrd image must be rebuilt:

1]  make uninstall
2]  make clean
3]  make 
4]  make install

- David Woodsmall  Copyright 2007-2017
  http://www.woodsmall.com/