#!/bin/bash

function set_bootlist
{
    host=$1

    ssh core@${host} uname -a 2> /dev/null | grep -q ppc64le
    (($?!=0)) && echo "Error: Architecture not ppc64le on ${host}" && exit 1

    ssh core@${host} systemctl is-active multipathd 1> /dev/null
    (($?!=0)) && echo "Error: Multipathing not active on ${host}" && exit 1
    
    disk=$(ssh core@${host} sudo bootlist -m normal -o | grep -E "^sd" | head -n1)
    [[ -z ${disk} ]] && echo "Error: Can not identify a boot block device for ${host}" && exit 1

    mapper=$(ssh core@${host} ls /sys/block/${disk}/holders)
    [[ -z ${mapper} ]] && echo "Error: Can not identify device mapper managing ${disk} for ${host}" && exit 1

    devices=$(echo $(ssh core@${host} ls /sys/block/${mapper}/slaves | awk '{print "/dev/"$1}'))
    [[ -z ${devices} ]] && echo "Error: Can not identify block devices managed by ${mapper} for ${host}" && exit 1

    ssh core@${host} sudo bootlist -m normal -o ${devices}
    (($?!=0)) && echo "Error: Problem setting boot list to ${devices} for ${host}" && exit 1
    echo "Set ${host} boot list to ${devices}"
}

for node in $(/usr/local/bin/oc get nodes | awk '!/NAME/ {print $1}') ; do
    set_bootlist ${node}
done
exit 0

#!/bin/bash

function set_bootlist
{
    host=$1

    ssh core@${host} uname -a 2> /dev/null | grep -q ppc64le
    (($?!=0)) && echo "Error: Architecture not ppc64le on ${host}" && exit 1

    ssh core@${host} systemctl is-active multipathd 1> /dev/null
    (($?!=0)) && echo "Error: Multipathing not active on ${host}" && exit 1
    
    disk=$(ssh core@${host} sudo bootlist -m normal -o | grep -E "^sd" | head -n1)
    [[ -z ${disk} ]] && echo "Error: Can not identify a boot block device for ${host}" && exit 1

    mpath_list="$(ssh core@${host} sudo multipath -l)"
    mpath_name=$(echo "${mpath_list}" | tr -d '|' | awk -v BLOCK=$disk 'BEGIN {MPATH=""}; /^mpath/ {MPATH=$1; next}; ($3 == BLOCK) {print MPATH; exit 0}')
    [[ -z ${mpath_name} ]] && echo "Error: Can not identify multipath device managing ${disk} for ${host}" && exit 1

    mpath_device="$(ssh core@${host} sudo multipath -l ${mpath_name})"
    boot_list=$(echo "${mpath_device}" | tr -d '|' | awk '/ sd/ {print $2" "$3}' | sort | head -n5 | cut -d ' ' -f 2 | tr '\n' ' ')
    [[ -z ${boot_list} ]] && echo "Error: Can not identify block devices managed by ${mpath_name} for ${host}" && exit 1

    ssh core@${host} sudo bootlist -m normal -o ${boot_list}
    (($?!=0)) && echo "Error: Problem setting boot list to ${boot_list} for ${host}" && exit 1
    echo "Set ${host} boot list to ${boot_list}"
}

for node in $(/usr/local/bin/oc get nodes | awk '!/NAME/ {print $1}') ; do
    set_bootlist ${node}
done
exit 0