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#!/bin/bash
#
# sync a removable volume with system backups.
#
# Parameters.
BASENAME="`basename $0`"
VOLUME="$1"
MEDIA="/media/$VOLUME"
BWLIMIT=${BWLIMIT:=0}
IMAGES="/var/data/crypt/"
CP="ionice -c 3 nice -n 19 cp"
WHOAMI="`whoami`"
# Set bandwidth limit
if [ "$BWLIMIT" != "0" ]; then
BWLIMIT="--bwlimit=$BWLIMIT"
else
BWLIMIT=""
fi
# Build rsync command line
RSYNC="ionice -c 3 nice -n 19 rsync -avH --delete $BWLIMIT"
# Sync backups for a node.
function sync_backups_node {
if [ ! -z "$NODE" ]; then
# Get full node hostname.
NODE_HOSTNAME="`$SUDO cat /var/vservers/$NODE/etc/hostname`"
if [ -z "$NODE_HOSTNAME" ]; then
NODE_HOSTNAME="$NODE"
fi
# Sync local encrypted backup.
echo "Syncing /var/vservers/$NODE/var/backups/duplicity/..."
$SUDO mkdir -p /$MEDIA/$NODE_HOSTNAME/duplicity
$SUDO $RSYNC /var/vservers/$NODE/var/backups/duplicity/ /$MEDIA/$NODE_HOSTNAME/duplicity/
# Sync remote backups.
for node in `$SUDO ls /var/vservers/$NODE/var/backups/remote/`; do
echo "Syncing /var/vservers/$NODE/var/backups/remote/$node/..."
$SUDO mkdir -p /$MEDIA/$NODE_HOSTNAME/remote/$node
$SUDO $RSYNC /var/vservers/$NODE/var/backups/remote/$node/ /$MEDIA/$NODE_HOSTNAME/remote/$node/
done
else
# Sync local encrypted backup.
echo "Syncing /var/backups/duplicity/..."
$SUDO mkdir -p /$MEDIA/$HOSTNAME/duplicity
$SUDO $RSYNC /var/backups/duplicity/ /$MEDIA/$HOSTNAME/duplicity/
# Sync remote backups.
for node in `$SUDO ls /var/backups/remote/`; do
echo "Syncing /var/backups/remote/$node/..."
$SUDO mkdir -p /$MEDIA/$HOSTNAME/remote/$node/
$SUDO $RSYNC /var/backups/remote/$node/ /$MEDIA/$HOSTNAME/remote/$node/
done
# Copy encrypted images.
if [ -d "$IMAGES" ]; then
for image in `find $IMAGES -name '*.img' -type f`; do
echo "Copying image to /$MEDIA/$HOSTNAME/images/`dirname $image`"
$SUDO mkdir -p /$MEDIA/$HOSTNAME/images/`dirname $image`
$SUDO $CP $image /$MEDIA/$HOSTNAME/images/`dirname $image`
done
fi
fi
}
# Parsing
if [ -z "$VOLUME" ]; then
echo "usage: $BASENAME <media> [nodes]"
exit 1
#elif [ "$WHOAMI" != 'root' ]; then
# echo "Please run this command as the root user"
# exit 1
else
shift
fi
# Set sudo config
if [ "$WHOAMI" != 'root' ]; then
SUDO="sudo"
fi
# Check volume name
if [ "$VOLUME" == "`hostname -f`" ]; then
echo "volume is the hostname, cannot sync to myself"
exit 1
fi
# Check if it is mounted
if ! mount | grep -q $MEDIA; then
echo "volume $MEDIA is not mounted"
exit 1
fi
# Detect if removable media is a system or a regular storage volume
if [ -d "$MEDIA/var/backups/remote" ]; then
MEDIA="$MEDIA/var/backups/remote"
fi
# Sync backups for each node.
if [ ! -z "$*" ]; then
for NODE in $*; do
sync_backups_node
done
else
sync_backups_node
fi
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