#!/bin/bash

# tune
# Tune kernel parameters for hardware

# Source functions library
source /etc/rc.d/init.d/functions

log_script_name "$0 $*"

tune_disks()
{
    cd /sys/block

    for disk in * ; do
        if cat /sys/block/${disk}/queue/rotational | grep -q 1 ; then
            echo "cfq" > /sys/block/${disk}/queue/scheduler
        else
            # SSD
            echo "deadline" > /sys/block/${disk}/queue/scheduler
        fi

        echo -n "Scheduler for disk ${disk} = "
        cat /sys/block/${disk}/queue/scheduler | sed "s/.*\[\(.*\)\].*/\1/"
    done
}

case "${1}" in
    start)
	cmd_run_log_box "Tuning disk parameters" tune_disks
        ;;
    *)
        echo "Usage: $0 {start}"
        exit ${EXIT_CODE_FAILURE}
	;;
esac

exit $?