I used to change it to override the /overlay partition with my USB storage, as directed by https://wiki.onion.io/Tutorials/Using-USB-Storage-as-Rootfs

However, this file is not persistent across reboots.

I get this after reboot:

root@Omega-15B0:~# cat /etc/config/fstab 
config 'global'
	option	anon_swap	'0'
	option	anon_mount	'0'
	option	auto_swap	'1'
	option	auto_mount	'1'
	option	delay_root	'5'
	option	check_fs	'0'

config 'mount'
	option	target	'/overlay' 
	option	uuid	'3ca7-8276'
	option	enabled	'1'

While I should be getting:

root@Omega-15B0:~# cat /etc/config/fstab 
config 'global'
	option	anon_swap	'0'
	option	anon_mount	'0'
	option	auto_swap	'1'
	option	auto_mount	'1'
	option	delay_root	'5'
	option	check_fs	'0'

config 'mount'
	option	target	'/overlay' 
	option	uuid	'2cca1b40-e417-4a30-9917-d0efa4864f05'
	option	enabled	'1'

Any insight?