Error when booting: Diskfilter writes not supported

[kpanic]

[member=5059]whateverthing[/member], if even Safe Mode does not allow you to create the ext4, then maybe LVM daemon is running
and does not let you do it.

Please try:

Code:

systemctl stop lvm2-lvmpolld.service

followed by:

Code:

kill -HUP $(cat /run/lvmetad.pid)