#!/bin/bash
+function log {
+ conf=`basename $config | sed 's/\.conf$//'`
+ [ "$dolog" = "1" ] && echo "`date` - $@" >> $logdir/${conf}.log
+}
+
if [ -z "$1" ]; then
echo usage: $0 configfile
exit -1
config=$1
host=`grep ^host $config | cut -d ' ' -f 2`
+aliases="`grep ^aliases $config | cut -d ' ' -f 2-`"
user=`grep ^user $config | cut -d ' ' -f 2`
homedirs="` grep ^homedirs $config | cut -d ' ' -f 2-`"
extradirs="`grep ^extradirs $config | cut -d ' ' -f 2-`"
oldest=`grep ^oldest $config | cut -d ' ' -f 2`
data=`grep ^data $config | cut -d ' ' -f 2`
bandwidth=`grep ^bandwidth $config | cut -d ' ' -f 2`
+bwconn="`grep ^bandwidth $config | cut -d ' ' -f 3-`"
+compression=`grep ^compression $config | cut -d ' ' -f 2`
+compconn="`grep ^compression $config | cut -d ' ' -f 3-`"
+cipher=`grep ^cipher $config | cut -d ' ' -f 2`
+ciconn=`grep ^cipher $config | cut -d ' ' -f 3-`
+logdir=`grep ^logdir $config | cut -d ' ' -f 2`
-ping -c1 $host > /dev/null 2>&1
-ret=$?
+dolog=0
+if [ ! -z "$logdir" ]; then
+ mkdir -p $logdir
+ [ -d $logdir ] && dolog=1
+fi
-if [ "$ret" = "0" ]; then
- echo "host $host is online ..."
-else
- echo "host $host unreachable ..."
+hit=0
+for conn in $host $aliases; do
+ ping -c1 $conn > /dev/null 2>&1
+ ret=$?
+ if [ "$ret" = "0" ]; then
+ remote=$conn
+ break
+ fi
+done
+if [ -z "$remote" ]; then
+ log "host $host ($aliases) unreachable ..."
exit -3
+else
+ log "host $host (via $remote) is online ..."
+fi
+
+if [ ! -z "`ssh $user@$remote 'cat ~/.backup | grep ^no'`" ]; then
+ log "backup rejected by client ..."
+ exit 0
+fi
+
+comp=6
+if [ ! -z "$compression" ]; then
+ comp=$compression
+ for cpair in "$compconn"; do
+ ch=`echo $cpair | cut -d ':' -f 1`
+ if [[ "$remote" == "$ch"* ]]; then
+ cl=`echo $cpair | cut -d ':' -f 2`
+ [[ "$cl" == [0-9] ]] && comp=$cl
+ fi
+ done
+fi
+rcomp="-z --compress-level $comp"
+log using compression level $comp ...
+
+bw=0
+if [ ! -z "$bandwidth" ]; then
+ bw=$bandwidth
+ for bwpair in "$bwconn"; do
+ ch=`echo $bwpair | cut -d ':' -f 1`
+ if [[ "$remote" == "$ch"* ]]; then
+ bwl=`echo $cpair | cut -d ':' -f 2`
+ [ ! -z "$bwl" ] && bw=$bwl
+ fi
+ done
+fi
+rbw="--bwlimit=$bw"
+log applying bandwidth of $bw ...
+
+ciph=""
+if [ ! -z "$cipher" ]; then
+ ciph=$cipher
+ for cipair in "$ciconn"; do
+ ch=`echo $cipair | cut -d ':' -f 1`
+ if [[ "$remote" == "$ch"* ]]; then
+ cl=`echo $cipair | cut -d ':' -f 2`
+ [ ! -z "$cl" ] && ciph=$cl
+ fi
+ done
+fi
+if [ ! -z "$ciph" ]; then
+ log using cipher $ciph ...
fi
if [ ! -d $data ]; then
- echo "no data directory ..."
+ log no data directory ...
exit -4
fi
+log backing up to $data ...
today=`date -I`
backupdir=$data/${user}_at_${host}
-
cbd=$backupdir/$today
-mkdir -p $cbd
-
-rsync="rsync -azR --delete --bwlimit=$bandwidth"
ob=""
+lpb=""
for pb in $backupdir/[0-9]*; do
+ [ ! -d $pb ] && continue
bdd=`basename $pb`
if [ ! -f $backupdir/.$bdd ]; then
if [ "$pb" != "$cbd" ]; then
rm -rf $cbd
mv $pb $cbd
+ log continuing $pb as $cbd ...
fi
-
- rsrc=""
- for dir in $homedirs; do
- rsrc="$rsrc :/home/$user/$dir"
- done
- rsrc="`echo $rsrc | sed 's/^\ //'`"
- for dir in $extradirs; do
- rsrc="$rsrc :$dir"
- done
- $rsync $user@$host$rsrc $cbd
- ret=$?
- [ "$ret" != "0" ] && exit -50
- touch $backupdir/.$pb
+ else
+ lpb=$pb
+ ob="$ob $pb"
fi
- ob="$ob $pb"
done
+
+if [ ! -d $cbd ]; then
+ if [ ! -z "$lpb" ]; then
+ cp -r $lpb $cbd
+ log starting backup $today from $lpb ...
+ else
+ mkdir -p $cbd
+ log starting backup $today from scratch ...
+ fi
+fi
+
+if [ ! -f $backupdir/.$today ]; then
+ rsrc=""
+ for dir in $homedirs; do
+ rsrc="$rsrc :/home/$user/$dir"
+ done
+ rsrc="`echo $rsrc | sed 's/^\ //'`"
+ for dir in $extradirs; do
+ rsrc="$rsrc :$dir"
+ done
+ [ ! -z "$homedirs" ] && \
+ log backing up home directories $homedirs ...
+ [ ! -z "$extradirs" ] && \
+ log backing up directories $extradirs ...
+
+ if [ -z "$ciph" ]; then
+ rsync=(rsync -aR $rcomp --delete $rbw $user@$remote$rsrc $cbd)
+ else
+ rsync=(rsync -aR -e "ssh -c $ciph" $rcomp --delete)
+ rsync+=($rbw $user@$remote$rsrc $cbd)
+ fi
+ "${rsync[@]}"
+
+ ret=$?
+ if [ "$ret" != "0" ]; then
+ log backup terminated before completion ...
+ exit -50
+ fi
+
+ touch $backupdir/.$today
+ log "backup $today completed :)"
+else
+ log backup $bdd found completed ...
+fi
+
+[ -z "$replicas" ] && replicas=3
+[ -z "$oldest" ] && oldest=0
+
cob=`echo $ob | wc -w`
if [ $cob -gt $replicas ]; then
((numdel=cob-replicas))
todel="`echo $ob | cut -d ' ' -f 1-${numdel}`"
- echo "to delete: $todel"
- #for dirdel in $todel; do
- # bdd=`basename $dirdel`
- # rm -r $dirdel
- # rm $backupdir/$bdd
- #done
+ for dirdel in $todel; do
+ past=`basename $dirdel`
+ ns=`date --date="$today" +%s`
+ ps=`date --date="$past" +%s`
+ ((delta=(ns-ps)/86400))
+ if [ $delta -gt $oldest ]; then
+ log "deleting $dirdel ($delta days old) ..."
+ bdd=`basename $dirdel`
+ rm -r $dirdel
+ rm $backupdir/.$bdd
+ else
+ log "keeping $dirdel ($delta days old) ..."
+ fi
+ done
fi
exit 0
projects / outofuni / backup.git / blobdiff