function volinfo_field()
{
    local vol=$1;
    local field=$2;

    $CLI volume info $vol | grep "^$field: " | sed 's/.*: //';
}


function brick_count()
{
    local vol=$1;

    $CLI volume info $vol | egrep "^Brick[0-9]+: " | wc -l;
}

function volume_option()
{
        local vol=$1
        local key=$2
        $CLI volume info $vol | egrep "^$key: " | cut -f2 -d' ';
}

function rebalance_status_completed_field {
        $CLI volume rebalance $V0 status | awk '{print $6}' | sed -n 3p
}

function remove_brick_status_completed_field {
        $CLI volume remove-brick $V0 $H0:$B0/r2d2_{4,5} status | awk '{print $6}' | sed -n 3p
}

function get_mount_process_pid {
        local vol=$1
        ps aux | grep glusterfs | grep -E "volfile-id[ =]/?$vol " | awk '{print $2}' | head -1
}

function generate_mount_statedump {
        local vol=$1
        local fpath=""
        mount_pid=$(get_mount_process_pid $vol)
        #remove old stale statedumps
        rm -f /tmp/glusterdump.$mount_pid.dump.* 2>/dev/null
        kill -USR1 $mount_pid
        #Wait till the statedump is generated
        sleep 1
        fname=$(ls /tmp | grep -E "glusterdump.$mount_pid.dump.*")
        echo /tmp/$fname
}

function afr_child_up_status {
        local vol=$1
        #brick_id is (brick-num in volume info - 1)
        local brick_id=$2
        local fpath=$(generate_mount_statedump $vol)
        up=$(grep -B1 trusted.afr.$vol-client-$brick_id $fpath | head -1 | cut -f2 -d'=')
        rm -f $fpath
        echo "$up"
}

function glustershd_up_status {
        gluster volume status | grep "Self-heal Daemon" | awk '{print $6}'
}

function kill_brick()
{
        vol=$1
        host=$2
        brick=$3
        brick_hiphenated=$(echo $brick | tr '/' '-')
        kill -9 `cat /var/lib/glusterd/vols/$vol/run/${host}${brick_hiphenated}.pid`
}

function check_option_help_presence {
        option=$1
        $CLI volume set help | grep "^Option:" | grep -w $option
}

function afr_get_changelog_xattr {
        file=$1
        xkey=$2
        getfattr -n $xkey -e hex $file 2>/dev/null | grep "client-" | cut -f2 -d'='
}