centos6-autoraid1.snip

#
# centos6-autoraid1.snip
#
# David "xdroop" Mackintosh
#
# Original credit belongs to someone else, probably back in the ancient days
# of the cobbler mail list.
#
# This Kickstart snippet checks the first two hard drives in the system.
# If they are the same size, then it tries to build a RAID-1 mirror on
# them. If it can't, then it creates a /boot and a LVM arrangement.
#
# By default I create a 1G swap and throw the rest in /. Because I've been
# carting this around since RHEL4 days, it refers to ext3. Of course all
# of this is changable.
#
# For some reason it doesn't work on C7.
#


# Partitioning information provided from the PRE script, below
clearpart --all --initlabel
%include /tmp/partinfo
bootloader --location=mbr


%pre
# PRE script to do partitioning.
# because reasons, this has to be the last % section of the ks.cfg

# find hard drives
# if you are using cobbler, remember to escape the $ in the next line
set \$(list-harddrives)
# this is the number of hard drives found
let numd=$#/2
# these are the device names of the first two drives
d1=$1
d2=$3
# these are the sizes of the first two drives
s1=$2
s2=$4
# if we have two or more drives, try to raid-1 the first two
if [ $numd -ge 2 ] ; then
        # paper-bag check -- only if the sizes are the same
        if [ "$s1" = "$s2" ] ; then
                # Naturally you can create more partitions than this, and/or
                # change the sizes. This creates a 1G swap and the rest as
                # the / filesystem.
                cat << EOF >> /tmp/partinfo
part raid.11 --size 1024 --asprimary --ondrive $d1
part raid.12 --size 1 --grow --ondrive $d1
part raid.21 --size 1024 --asprimary --ondrive $d2
part raid.22 --size 1 --grow --ondrive $d2
raid swap --fstype swap --device md1 --level RAID1 raid.11 raid.21
raid /    --fstype ext3 --device md2 --level RAID1 raid.12 raid.22
EOF
        fi
fi
if [ ! -f /tmp/partinfo ] ; then
        # if we get here, then we either have only one disk
        # or the first two disks do not match in size.
        # I am using lvm to make filesystem growth easier.
        cat << EOF >> /tmp/partinfo
part /boot --fstype ext3 --ondisk=$d1 --size=1024 --fsoptions="defaults,relatime" --asprimary
part pv.6 --grow --size=1 --ondisk=$d1
volgroup Volume00 --pesize=65536 pv.6
logvol / --fstype=ext3 --fsoptions="defaults,relatime" --name=lvroot --vgname=Volume00 --size=1 --grow
logvol swap --name=lvswap --vgname=Volume00 --size=1024
EOF
fi