After creating the directory and making a reboot here is my mountall.log. It is showing an error which is related to this problem: https://bugs.launchpad.net/ubuntu/+source/plymouth/+bug/855933
After creating the directory and making a reboot here is my mountall.log. It is showing an error which is related to this problem: https:/ /bugs.launchpad .net/ubuntu/ +source/ plymouth/ +bug/855933