automatic config reset to default after disk full (Suricata bloat log)

[peter.vynck]

Yesterday evening my router stopped responding. It was still making the start/stop sounds however.
Turns out config was reverted to default settings.
After logging in it became clear the disk was full due to a +30GB Suricata log...
I understand this clogging brings the router to a standstill but I cannot understand why the router reverted to default settings?
Question: is there an easy way to limit the size of the Suricata logging?