Make Root Filesystem Writable
Sometimes it can be useful to make changes directly to the citadel root filesystem to experiment with changes or to debug a problem.
First citadel.noverity must be added to the kernel commandline. After booting with this command line option verify that dm-verity has been disabled with the dmsetup command.
# dmsetup status rootfs
0 4194304 linear
If the output displays verity instead of linear then dm-verity is enabled and the disk cannot be safely written to.
Next remount the root filesystem with read-write flag.
# mount -oremount,rw,noatime /