kuroboxHGのファンの回転数

kuroboxHGのファンの回転数の変更を細かくする。

netcat6, hddtempをインストールしてncコマンドで温度を取得する。

$ rcsdiff -r1.1 /etc/config-archive/etc/conf.d/hddtemp,v /etc/conf.d/hddtemp
===================================================================
RCS file: /etc/config-archive/etc/conf.d/hddtemp,v
retrieving revision 1.1
diff -r1.1 /etc/conf.d/hddtemp
12c12
< HDDTEMP_DRIVES="/dev/hda /dev/hdb"
---
> HDDTEMP_DRIVES="/dev/sda"

$ nc localhost 7634;echo
nc: using stream socket
|/dev/sda|ST3250823A|48|C|

rc.localファイルのようなファイルを設置するディレクトリにshスクリプトを設置する。

$ cat /etc/local.d/hddtemp.start | grep -v ^$ | grep -vP '^#(?!!)'
#!/bin/sh
TEMPLIMIT=48
SLEEP=30
PATH="/bin:/usr/bin"
CURRENT_SLEEP=0
BUF=""
IFS='|'
HDDTEMP=0
CHANGE_MODE=""
CURRENT_MODE=""
while true
do
    CURRENT_SLEEP=$SLEEP
    BUF=$(nc localhost 7634 2>/dev/null)
    set -- $BUF
    HDDTEMP=$4
    if [ "$HDDTEMP" -le $TEMPLIMIT ]; then
        CHANGE_MODE="low"
    else
        CHANGE_MODE="high"
    fi
    if [ "$CHANGE_MODE" != "$CURRENT_MODE" ]; then
        if [ "$CHANGE_MODE" = "low" ]; then
            logger -t hddtemp "Temperature is Low.  Setting Fan Low  "`echo $HDDTEMP C`
            echo -n '\\\\' > /dev/ttyS0
            echo -n 'ffff' > /dev/ttyS0
        else
            logger -t hddtemp "Temperature is High. Setting Fan High "`echo $HDDTEMP C`
            echo -n ']]]]' > /dev/ttyS0
            echo -n 'gggg' > /dev/ttyS0
            CURRENT_SLEEP=$[ $SLEEP * 10 ]
        fi
    fi
    CURRENT_MODE=$CHANGE_MODE
    sleep $CURRENT_SLEEP
done &

shスクリプトを起動する。

$ sudo chmod +x /etc/local.d/hddtemp.start
$ ll /etc/local.d/hddtemp.start
-rwxr-xr-x 1 root root 1560 2011-07-11 15:39:23 /etc/local.d/hddtemp.start*
$ sudo /etc/local.d/hddtemp.start

確認する。

$ sudo tail -n30 /var/log/messages|grep hddtemp
Jul 12 00:54:26 kuroboxhg hddtemp: Temperature is High. Setting Fan High 49 C
Jul 12 00:59:26 kuroboxhg hddtemp: Temperature is Low.  Setting Fan Low  48 C
Jul 12 01:12:28 kuroboxhg hddtemp: Temperature is High. Setting Fan High 49 C
Jul 12 01:17:28 kuroboxhg hddtemp: Temperature is Low.  Setting Fan Low  48 C
Jul 12 02:36:07 kuroboxhg hddtemp: Temperature is High. Setting Fan High 49 C
Jul 12 02:41:07 kuroboxhg hddtemp: Temperature is Low.  Setting Fan Low  48 C
$ pstree -pal 8902
hddtemp.start,8902 /etc/local.d/hddtemp.start
  └─sleep,17012 30

2.6.25と比べて ttyS0, ttyS1 が違う。

$ uname -a
Linux kuroboxhg 2.6.38-gentoo-r6 #2 Wed Jun 15 02:04:57 JST 2011 ppc 82xx Linkstation I/Kurobox(HG) GNU/Linux