functions: Add umount attemps counter

common.d/functions.sh

@@ -25,7 +25,7 @@ mkdir_if_not_exists ()
 
 umount_if_mouted()
 {   
-    [ ! -d "$1" ] && return 0
+    [ ! -d "$1" ] && return 1
     if grep -qs "$(realpath "$1")" /proc/mounts; then
         umount "$1"
         return $?
@@ -36,8 +36,8 @@ umount_if_mouted()
 
 umount_force()
 {
-    [ ! -d "$1" ] && return 0
-    while true; do
+    [ ! -d "$1" ] && return 1
+    for run in {1..5}; do
         umount_if_mouted "$1" && break 
         log "Failed to umount $1. Trying again after 3 seconds" ierror
         sleep 3