diff --git a/changelog.md b/changelog.md
index ab019caba..6d44da3ae 100644
--- a/changelog.md
+++ b/changelog.md
@@ -1,5 +1,17 @@
 
-[v0.26.22](https://github.com/nextcloud/nextcloudpi/commit/e38f24c) (2017-09-08) build devel: deactivate unattended upgrades
+[v0.26.28](https://github.com/nextcloud/nextcloudpi/commit/94eb3ce) (2017-09-08) nc-backup: small fixes
+
+[v0.26.27](https://github.com/nextcloud/nextcloudpi/commit/649e8b7) (2017-09-10) ncp-web: link to wiki info for each extra
+
+[v0.26.26](https://github.com/nextcloud/nextcloudpi/commit/6f25713) (2017-09-10) ncp-web: minor tweaks
+
+[v0.26.25](https://github.com/nextcloud/nextcloudpi/commit/fab1815) (2017-09-10) ncp-web: click version for changelog. click new version notification to nc-update
+
+[v0.26.24](https://github.com/nextcloud/nextcloudpi/commit/ea5bbb4) (2017-09-10) nc-format-USB: silent mkfs output
+
+[v0.26.23](https://github.com/nextcloud/nextcloudpi/commit/e820243) (2017-09-10) ncp-web: display info for each option
+
+[v0.26.22](https://github.com/nextcloud/nextcloudpi/commit/a20243e) (2017-09-09) nc-format-USB: adjust to the new automount system
 
 [v0.26.21](https://github.com/nextcloud/nextcloudpi/commit/64e878d) (2017-09-08) tag images
 
diff --git a/etc/nextcloudpi-config.d/nc-backup-auto.sh b/etc/nextcloudpi-config.d/nc-backup-auto.sh
index f016b5d16..6e3ff7fdb 100644
--- a/etc/nextcloudpi-config.d/nc-backup-auto.sh
+++ b/etc/nextcloudpi-config.d/nc-backup-auto.sh
@@ -67,15 +67,28 @@ mysqldump -u root --single-transaction nextcloud > \$DBBACKUP
 [[ "$INCLUDEDATA_" == "yes" ]] && echo -e "backup datadir... "
 echo -e "backup files..."
 mkdir -p $DESTDIR_
-tar -cf \$DESTFILE \$DBBACKUP nextcloud/ --exclude 'nextcloud/data/*/files/*' && \
-  echo -e "backup \$DESTFILE generated" || \
-  echo -e "error generating backup"
-rm \$DBBACKUP
-
-[[ "$INCLUDEDATA_" == "yes" ]] && {
-  tar -rf \$DESTFILE -C \$DATADIR/.. \$( basename \$DATADIR ) || \
-    echo -e "error generating data backup"
-}
+tar -cf "\$DESTFILE" "\$DBBACKUP" nextcloud/ \
+  --exclude "nextcloud/data/*/files/*" \
+  --exclude "nextcloud/data/.opcache" \
+  --exclude "nextcloud/data/{access,error,nextcloud}.log" \
+  --exclude "nextcloud/data/access.log" \
+    || {
+          echo -e "error generating backup"
+          sudo -u www-data php "$BASEDIR"/nextcloud/occ maintenance:mode --off
+          return 1
+        }
+  rm "\$DBBACKUP"
+
+  [[ "$INCLUDEDATA_" == "yes" ]] && {
+    echo -e "backup data files..."
+    tar -rf "\$DESTFILE" -C "\$DATADIR"/.. "\$( basename "\$DATADIR" )" \
+    || {
+          echo -e "error generating backup"
+          sudo -u www-data php "$BASEDIR"/nextcloud/occ maintenance:mode --off
+          return 1
+        }
+  } 
+  echo -e "backup \$DESTFILE generated"
 
 # delete older backups
 [[ $BACKUPLIMIT_ != 0 ]] && {
diff --git a/etc/nextcloudpi-config.d/nc-backup.sh b/etc/nextcloudpi-config.d/nc-backup.sh
index e75648b5e..528f4f211 100644
--- a/etc/nextcloudpi-config.d/nc-backup.sh
+++ b/etc/nextcloudpi-config.d/nc-backup.sh
@@ -37,22 +37,30 @@ configure()
   echo -e "backup database..."
   mysqldump -u root --single-transaction nextcloud > "$DBBACKUP"
 
-  [[ "$INCLUDEDATA_" == "yes" ]] && echo -e "backup datadir... "
-  echo -e "backup files..."
+  echo -e "backup base files..."
   mkdir -p "$DESTDIR_"
   tar -cf "$DESTFILE" "$DBBACKUP" nextcloud/ \
     --exclude "nextcloud/data/*/files/*" \
     --exclude "nextcloud/data/.opcache" \
     --exclude "nextcloud/data/{access,error,nextcloud}.log" \
-    && \
-    echo -e "backup $DESTFILE generated" || \
-    echo -e "error generating backup"
+    --exclude "nextcloud/data/access.log" \
+    || {
+          echo -e "error generating backup"
+          sudo -u www-data php "$BASEDIR"/nextcloud/occ maintenance:mode --off
+          return 1
+        }
   rm "$DBBACKUP"
 
   [[ "$INCLUDEDATA_" == "yes" ]] && {
-    tar -rf "$DESTFILE" -C "$DATADIR"/.. "$( basename "$DATADIR" )" || \
-      echo -e "error generating data backup"
-  }
+    echo -e "backup data files..."
+    tar -rf "$DESTFILE" -C "$DATADIR"/.. "$( basename "$DATADIR" )" \
+    || {
+          echo -e "error generating backup"
+          sudo -u www-data php "$BASEDIR"/nextcloud/occ maintenance:mode --off
+          return 1
+        }
+  } 
+  echo -e "backup $DESTFILE generated"
 
   # delete older backups
   [[ $BACKUPLIMIT_ != 0 ]] && {