improve set_writemostly.sh

hdd/set_writemostly.sh

@@ -11,14 +11,21 @@ use_in_md()
 }
 
 for dev in /dev/sd? ; do
-    is_hdd $dev || continue
     echo
-    echo "HDD: $dev"
+    if is_hdd $dev ; then
+        echo "HDD:$dev"
+        FLAG=writemostly
+    else
+        echo "SSD:$dev"
+        FLAG=-writemostly
+    fi
     for md in /dev/md?* ; do
         use_in_md "$md" "$dev" || continue
-        echo "   used in $md, set writemostly...."
         devpart="$(mdadm -D "$md" | grep "$dev" | sed -e "s|.*$dev|$dev|")"
         [ -b "$devpart" ] || exit
-        echo writemostly >/sys/block/$(basename $md)/md/dev-$(basename $devpart)/state
+        echo "  used in $md as $devpart, set $FLAG ..."
+        echo "$FLAG" >/sys/block/$(basename $md)/md/dev-$(basename $devpart)/state
     done
 done
+
+# TODO both HDD problem: both writemostly