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some rewrite for my rsync backup script

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This commit is contained in:
Steffen Vogel 2013-11-08 17:48:35 +01:00
parent ef787905b5
commit e6a99d2f7f
1 changed files with 41 additions and 13 deletions
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54
bash/backup-remote.sh
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@ -1,13 +1,14 @@
#!/bin/bash
##
# Sync with remote server and create btrfs snapshots
# Sync with remote server and create Btrfs snapshots
#
# This scripts uses rsync to sync remote directories with a local copy
# After every successful sync a readonly btrfs snapshot of this copy is
# After every successful sync a readonly Btrfs snapshot of this copy is
# created
#
# This script requires root privileges! Consider using public key auth-
# entification with SSH and allow root logins only with a private key:
# This script requires root privileges for creating Btrfs snapshots.
# Consider using public key authentification with SSH to allow root
# logins on remote machines:
#
# On remote side:
# echo "PermitRootLogin without-password" >> /etc/ssh/sshd_config:
@ -37,27 +38,54 @@
##
function usage {
echo "Usage: $(basename $0) REMOTE LOCAL"
echo "Usage: $(basename $0) SOURCE DEST"
echo
echo " REMOTE a rsync source path/server"
echo " LOCAL the local destination directory"
echo " SOURCE a path to the subvolume to backup"
echo " DEST a path to the backup destination"
exit 1
}
set -e
if [ $# -ne 2 ]; then
echo -e "invalid args!"
echo
usage
fi
HOST=$1
DIR=$2
DATE=$(date +%F_%H-%M-%S)
EXCLUDE=/dev,/proc,/sys,/tmp,/run,/mnt,/media,/lost+found
SRC=$1
DEST=$(readlink -f $2)
if ! btrfs sub show $DEST/.current &> /dev/null; then
if [ -d $DEST/.current ]; then
echo -e "destination directory exists and is not a valid btrfs subvolume!"
echo
usage
else
btrfs sub create $DEST/.current
fi
fi
# rsync options
OPTS="--archive --acls --xattrs"
OPTS+=" --progress --human-readable"
OPTS+=" --delete --delete-excluded"
OPTS+=" --exclude /dev/"
OPTS+=" --exclude /proc/"
OPTS+=" --exclude /sys/"
OPTS+=" --exclude /tmp/"
OPTS+=" --exclude /run/"
OPTS+=" --exclude /mnt/"
OPTS+=" --exclude /media/"
OPTS+=" --exclude /lost+found/"
# sync with remote
rsync -aAX --delete root@$HOST:/ $DIR/latest --exclude={$EXCLUDE}
rsync $OPTS $SRC $DEST/.current/
# create new readonly snapshot
btrfs subvolume snapshot -r $DIR/latest $DIR/$DATE
btrfs subvolume snapshot -r $DEST/.current $DEST/$DATE
# create symlink to latest snapshot
ln -sf $DATE latest