more features + trigger fixed

[outofuni/backup.git] / bin / backup

diff --git a/bin/backup b/bin/backup
index f69dfa0..6b04a56 100755 (executable)
--- a/bin/backup
+++ b/bin/backup
@@ -1,5 +1,10 @@
 #!/bin/bash
 
+function log {
+       conf=`basename $config | sed 's/\.config$//'`
+       [ "$dolog" = "1" ] && echo "`date` - $@" >> $logdir/${conf}.log
+}
+
 if [ -z "$1" ]; then
        echo usage: $0 configfile
        exit -1
@@ -13,6 +18,7 @@ fi
 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-`" 
@@ -20,21 +26,66 @@ replicas=`grep ^replicas $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-`"
+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
 
+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=$bwl
+               fi
+       done
+fi
+rbw="--bandwidth=$bw"
+log applying bandwidth of $bw ...
+
 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}
@@ -51,6 +102,7 @@ for pb in $backupdir/[0-9]*; do
                if [ "$pb" != "$cbd" ]; then
                        rm -rf $cbd
                        mv $pb $cbd
+                       log continuing $pb as $cbd ...
                fi
 
                rsrc=""
@@ -61,10 +113,18 @@ for pb in $backupdir/[0-9]*; do
                for dir in $extradirs; do
                        rsrc="$rsrc :$dir"
                done
-               $rsync $user@$host$rsrc $cbd
+               [ ! -z "$homedirs" ] && \
+                       log backing up home directories $homedirs ...
+               [ ! -z "$extradirs" ] && \
+                       log backing up directories $extradirs ...
+               $rsync $user@$remote$rsrc $cbd
                ret=$?
-               [ "$ret" != "0" ] && exit -50
+               if [ "$ret" != "0" ]; then
+                       log backup terminated before completion ...
+                       exit -50
+               fi
                touch $backupdir/.$pb
+               log "backup completed :)"
        fi
        ob="$ob $pb"
 done
@@ -73,7 +133,7 @@ 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"
+       log to delete: $todel
        #for dirdel in $todel; do
        #       bdd=`basename $dirdel`
        #       rm -r $dirdel