FS#3940 - Read only / filesystem after power loss

[openwrt-bot]

iwanst:

Hi all,

Virtual machine x86 builded with image builder and
version 21.02.0-rc3 with package softethervpn-server - 4.34-9745-1

suddenly occurs with read only filesystem /

root@OpenWrt:/# mount
/dev/root on / type ext4 (ro,noatime)
.
.

after check and random errors in fs (mostly related with softether vpn server):

root@OpenWrt:/# mount
/dev/root on / type ext4 (rw,noatime)
.
.
free space is:
root@OpenWrt:/# df -h
Filesystem Size Used Available Use% Mounted on
/dev/root 220.5M 31.7M 184.3M 15% /
.
.

In working old 15 version:

root@OpenWrt:/# cat /etc/openwrt_version
15.05.1
root@OpenWrt:/# mount
rootfs on / type rootfs (rw)
/dev/root on / type ext4 (rw,noatime,data=ordered)
.
.

Do I have to make it data=ordered to prevent data and fs problems and how?

Thanks in advance?