I recently upgraded an old system to Ubuntu 18.04 and have got everything almost as I want it. I've been converting partitions to lvm2 and needed to juggle about a few mounted filesystems, including creating a new /home filesystem (which I've had to re-create a few times during the juggling).
After re-creating /home on a new partition I simply edited /etc/fstab to mount the new partition as /home and then re-booted and everything is fine and dandy... manually mounted temp partitions are no longer mounted and the new /home partition gets mounted as /home. Done this about 3 times with no problems.
However, the last time I did this, the new home partition persisted on the old mount point and the old home partition persisted as /home. In fact *all mounted partitions persisted through a reboot and a complete power off. Seems like it's ignoring the entries in fstab.
I know how to fix the problem with the home partition but I'm not sure why the behaviour has changed or what I can do about it.
Is there a setting somewhere that switches this on or off? Any pointers appreciated.
M