How to make '/home' readonly?

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I have RHEL 7.5 installed and I wish to make both '/' and '/home' read-only. I have modified:
- /etc/sysconfig/readonly-root so that 'READONLY=yes'
- /etc/fstab so that /dev/mapper/rhel-root has 'ro' instead of 'defaults'.
This works in making '/' readonly.

However I also wish to make '/home' readonly. Attempts at modifying /etc/fstab such that /dev/mapper/rhel-home has 'ro' instead of 'defaults' as well, results in a login loop. I also tried adding the user's home directory to /etc/rwtab.d/, which would then result in the system failing to load properly.

Are there any solutions in making '/home' readonly?

KL

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