I am working on a snapshot driver for the block devices on RHEL 6 and RHEL7 and there is some problem during snapshot specific to boot on RHEL 7, which i am suspecting due to COW related. When I checked, it was mounted as RW mode. I have few questions Why boot is mounted as RW?How can i remount boot as read-only?I tried below command but it didn't work for me mount -f -o remount,ro /bootThe problem is specific to RHEL 7 boot partition (/dev/sda1 in my case) only. 
remount boot partition as readonly
rhel;mount;boot;snapshot