Subversion Repositories programming

#!/bin/bash

################################################################################
#
# Copyright (c) 2005,2006: Ira W. Snyder (devel@irasnyder.com)
# License: GNU General Public License v2 (or at your option, any later version)
#
################################################################################

# This script needs dd, mktemp, smartctl, cstream, mailx, tee, sleep, echo,
# date, hostname, and rm in your path in order to work at all.

################################################################################
###                            Config Options                                ###
################################################################################

TMPFILE="$(mktemp)" || (echo "Failed to create tempfile" && exit 1)
EMAIL_ADDR="ira@irasnyder.com"
EMAIL_FILE="${TMPFILE}"
RAID_DEVICE="/dev/md0"
RAID_DRIVES="/dev/sd[abcdefgh]"
DD_SPD_LIMIT="80M"
SMART_SLEEP_TIME="160m"

################################################################################
###                            Functions                                     ###
################################################################################

# Anything that needs to be run before the main program starts
# goes in this function
function pre_startup () {
}

# Anything that needs to be run after the main program finishes
# goes in this function
function clean_up () {
    if [ -f "$EMAIL_FILE"]; then
        echo "Removing: $EMAIL_FILE";
        rm "$EMAIL_FILE";
    fi
}

# Generate a nice header for the email
function generate_header () {
    echo "raid_checker v1.0"
    echo "Copyright (c) 2005,2006: Ira W. Snyder (devel@irasnyder.com)"
    echo "====================================================================="
    echo
}

################################################################################
###                            The main program                              ###
################################################################################

# Run pre-startup stuff
pre_startup

# Make the header
generate_header | tee -a "$EMAIL_FILE"

# Get start date / time
START_TIME="$(date)"

### Optional stuff, disabled for now, since you MUST be offline to perform
### both checks, and I don't want to have to go offline once a month.

# Check via read test
# echo "Running read-only check: e2fsck -c $RAID_DEVICE" | tee -a "$EMAIL_FILE"
# e2fsck -c "$RAID_DEVICE" 2>&1 | tee -a "$EMAIL_FILE"

# Check via non-destructive read-write test
# echo "Running non-destructive read-write check: e2fsck -c -c $RAID_DEVICE" | tee -a "$EMAIL_FILE"
# e2fsck -c -c "$RAID_DEVICE" 2>&1 | tee -a "$EMAIL_FILE"

# Read the whole disk. As of linux-2.6.15, md will regenerate bad data on
# a read error, then schedule a write of the good data back to disk. It
# should then re-read the newly written data to make sure it's ok.
#
# Source: http://www.ussg.iu.edu/hypermail/linux/kernel/0601.2/1200.html
#
echo "Reading the whole disk: dd if=${RAID_DEVICE} of=/dev/null" | tee -a "$EMAIL_FILE"
dd if="${RAID_DEVICE}" | cstream -t"${DD_SPD_LIMIT}" -T300 -v1 -o- | tee -a "$EMAIL_FILE"
echo | tee -a "$EMAIL_FILE"
echo | tee -a "$EMAIL_FILE"

# Run smartctl on each drive, sleeping in between each one
for d in $RAID_DRIVES;
    do echo "SMART checking drive: ${d}" | tee -a "$EMAIL_FILE"
    echo "=================================================" | tee -a "$EMAIL_FILE"
    smartctl -t long "${d}" 2>&1 | tee -a "$EMAIL_FILE"
    echo | tee -a "$EMAIL_FILE"
    echo | tee -a "$EMAIL_FILE"
    sleep "${SMART_SLEEP_TIME}"
    smartctl -d ata -l selftest "${d}" 2>&1 | tee -a "$EMAIL_FILE"
    echo | tee -a "$EMAIL_FILE"
    echo | tee -a "$EMAIL_FILE"
done;

# Get finish date / time
FINISH_TIME="$(date)"

# Print the final bits to the email
echo "Start time:  ${START_TIME}"  | tee -a "$EMAIL_FILE"
echo "Finish time: ${FINISH_TIME}" | tee -a "$EMAIL_FILE"

# Mail out the file
mailx -s "RAID Check Results from: $(hostname --fqdn)" "$EMAIL_ADDR" < "$EMAIL_FILE"

# Clean up the email file, etc.
clean_up