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

  1. Why boot is mounted as RW?
  2. How can i remount boot as read-only?

I tried below command but it didn't work for me

mount -f -o remount,ro /boot

The problem is specific to RHEL 7 boot partition (/dev/sda1 in my case) only.

  • mount worked for me. I was able to mount it in read-only mode by simply removing -f from above command. But still I don't understand why we need rw mode for boot partition. – DTdev Jul 24 '17 at 15:49

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