hdd info backup

#!/bin/bash

FROM='username@yandex.ru';
TO='backup@yandex.ru';
PASS='password';

FDISK='/sbin/fdisk -lu ';
MDADM='/sbin/mdadm';
LVM='/sbin/vgdisplay';
MAIL_PRG='/usr/bin/sendEmail';

DIR='/tmp/hdd-info';

MBR_BYTES=2048;
SEND_ATTEMPT_COUNT=3;
SEND_ATTEMPT_PERIOD='1h';
TEST_HOST='ya.ru';
TEST_TRYS=3;
TEST_DELAY='1h';

# ----------  Automatic params ----------
HOST=`echo $FROM | cut -d@ -f 2`;
USER=`echo $FROM | cut -d@ -f 1`;
SERVER="smtp.$HOST";
TITLE="hdd info (`hostname`)";


# ==================== Functions ====================

debugInfo(){
    [ 'qwerty' == "qwerty$VERBOSE" ] && return 0;
    echo "$@";
}

fname(){
    echo $1 | grep -E -o [^/]+$ | sed -r 's/\.[^.]+$//';
}

# Creates file in TMP with uniq (time based) name with given PREFIX.
make_temp_file(){
    local FUNC='makeTempFile()';

    [ 0 -eq $# ] && {
        echo "$FUNC: prefix required" >&2;
        exit 1;
    }

    local PREFIX="$1";
    local FILE="/tmp/$PREFIX-`date +%Y.%m.%d-%H.%M.%S`.txt";

    touch "$FILE" || {
        echo "$FUNC: unable to create temp file '$FILE'" >&2;
        exit 1;
    }

    echo "$FILE";
}

get_LVM_info(){
    if [ -e $LVM -a -x $LVM ]; then
        local FILE=`make_temp_file 'LVM'`;

        for cmd in vgdisplay lvdisplay pvdisplay; do
            echo "---------- $cmd ----------" >> $FILE;
            /sbin/$cmd --units b >> $FILE 2>/dev/null;
            echo >> $FILE;
        done

        for cmd in vgs lvs pvs; do
            echo "---------- $cmd ----------" >> $FILE;
            local OPT=$( echo $cmd | sed -r 's/s$/_all/' );
            /sbin/$cmd --units b -o $OPT >> $FILE 2>/dev/null;
            echo >> $FILE;
        done
    else
        local FILE=`make_temp_file 'NO-LVM-HERE'`;
    fi

    echo $FILE;
}

get_RAID_info(){
    if [ -e $MDADM -a -x $MDADM ]; then
        local FILE=`make_temp_file 'RAID'`;

        for drive in /dev/sd* /dev/hd*; do
            [ -b $drive ] || continue;

            echo "---------- $drive ----------" >> $FILE;
            $MDADM --examine $drive >> $FILE 2>/dev/null;
            echo >> $FILE;
        done
        unset drive;
    else
        local FILE=`make_temp_file 'NO-RAID-HERE'`;
    fi

    echo $FILE;
}

get_partitions_info(){
    local FILE=`make_temp_file 'PARTITIONS'`;

    for drive in /dev/sd[a-z] /dev/hd[a-z]; do
        [ -b $drive ] || continue;

        echo "---------- FDISK: $drive ----------" >> $FILE;
        $FDISK $drive >> $FILE 2>/dev/null;
        echo >> $FILE;
    done
    unset drive;

    echo $FILE;
}

get_MBRs(){
    local DIR=`make_temp_file 'MBR'` && rm -f $DIR;
    DIR="/tmp/`fname $DIR`";
    mkdir $DIR;

    for drive in /dev/sd[a-z] /dev/hd[a-z]; do
        [ -b $drive ] || continue;

        local FILE="$DIR/mbr-`fname ${drive}-$MBR_BYTES`";
        dd if=$drive of=$FILE bs=$MBR_BYTES count=1 2>/dev/null;
    done

    local FILE="$DIR.tar.gz";
    tar czf $FILE $DIR 2>/dev/null && \
        rm -f $DIR/* && \
        rmdir $DIR;

    echo $FILE;
}


# ==================== Logic ====================
# ----- Настройка -----
case $1 in
    -v|--verbose|--debug)
        echo "-= Debug mode =-";
        VERBOSE='-v';
        ;;
    *)
        VERBOSE='';
        ;;
esac


# ----- Сбор инфы -----
debugInfo "Info collect...";

PART_INFO=`get_partitions_info`;
RAID_INFO=`get_RAID_info`;
LVM_INFO=`get_LVM_info`;
MBRs=`get_MBRs`;

[ -x $MAIL_PRG ] || {
    echo "There is no email program '$MAIL_PRG'" >&2;
    exit 1;
}


# ----- Проверка сети -----
debugInfo "Network check...";

TEST_COUNT=0;
while [ $TEST_COUNT -lt $TEST_TRYS ]; do
    if ( ping -c 3 $TEST_HOST 1>/dev/null 2>/dev/null ); then
        debugInfo "Network is UP";
        break;
    else
        debugInfo "Network is DOWN, sleeping for $TEST_DELAY";
        sleep $TEST_DELAY;
    fi
    TEST_COUNT=$(( TEST_COUNT + 1 ));
done


# ----- Отправка -----
debugInfo "Sending...";

MAIL_CMD="$MAIL_PRG $VERBOSE -f $FROM -t $TO -s $SERVER -xu $USER -xp $PASS -o message-charset=UTF-8 -u '$TITLE' -m 'Будь счастлив' -a $PART_INFO -a $RAID_INFO -a $LVM_INFO -a $MBRs";

debugInfo "$MAIL_CMD";

$MAIL_CMD 1>/dev/null && debugInfo "HDD info is mailed successfully" || {
    echo "Error sending email" >&2;
    exit 1;
}


# ----- Заметание следов -----
debugInfo "Removing temporary data...";

rm -f $PART_INFO;
rm -f $RAID_INFO;
rm -f $LVM_INFO;
rm -f $MBRs;

debugInfo "Good luck!";