Implement Debian #535996 to use --full-if-older-than

handlers/dup.helper.in

@@ -123,6 +123,7 @@ do_dup_dest() {
         formItem "destdir" "$dup_destdir"
         formItem "keep" "$dup_keep"
         formItem "incremental" "$dup_incremental"
+        formItem "increments" "$dup_increments"
         formItem "bandwidthlimit" "$dup_bandwidth"
         formItem "sshoptions" "$dup_sshoptions"
       formDisplay
@@ -139,8 +140,9 @@ do_dup_dest() {
       dup_destdir=${thereply[2]}
       dup_keep=${thereply[3]}
       dup_incremental=${thereply[4]}
-      dup_bandwidth=${thereply[5]}
-      dup_sshoptions=${thereply[6]}
+      dup_increments=${thereply[5]}
+      dup_bandwidth=${thereply[6]}
+      dup_sshoptions=${thereply[7]}
 
    done
    set +o noglob
@@ -406,6 +408,14 @@ EOF
 # if incremental = no, perform a full backup in order to start a new backup set
 incremental = $dup_incremental
 
+# how many days of incremental backups before doing a full backup again ; default is 30 days.
+# (you can also use the time format of duplicity)
+# if 'increments = keep' is set : do not start another full backup,
+# but keep doing incremental backups
+#increments = 30
+#increments = keep
+increments = $dup_increments
+
 # how many days of data to keep ; default is 60 days.
 # (you can also use the time format of duplicity)
 # 'keep = yes' means : do not delete old data, the remote host will take care of this
@@ -510,6 +520,7 @@ dup_wizard() {
    dup_excludes=
    dup_vsincludes=
    dup_incremental=yes
+   dup_increments=30
    dup_keep=60
    dup_bandwidth=
    dup_sshoptions=

handlers/dup.in

@@ -24,6 +24,7 @@ getconf exclude
 
 setsection dest
 getconf incremental yes
+getconf increments 30
 getconf keep 60
 getconf desturl
 getconf awsaccesskeyid
@@ -164,14 +165,13 @@ if [ "$incremental" == "no" ]; then
       execstr_command="full"
    fi
 else
-   if [ "$keep" != "yes" ]; then
-      fullifolderthan="30D"
-      if [ "`echo $keep | tr -d 0-9`" == "" ]; then
-         #let "fullifolderthan = keep / 2"
-         fullifolderthan=$(($keep / 2))
-         fullifolderthan="${fullifolderthan}D"
+   # we're in incremental mode
+   if [ "$increments" != "keep" ]; then
+      # if we don't want to keep every increments
+      if [ "`echo $increments | tr -d 0-9`" == "" ]; then
+         increments="${increments}D"
       fi
-      execstr_options="${execstr_options} --full-if-older-than $fullifolderthan"
+      execstr_options="${execstr_options} --full-if-older-than $increments"
    fi
 fi