Node suddenly become OFFLINE but disk acitvity is at 100% always

I new as a node operator about 1 month ago. until now my node suddenly becomes OFFLINE but my Disk activity is at 100%. also attached is my log file… Am I DISQUALIFIED? wgat does this mean. If anyone could knows my problem in this node please help me. Thanks

Please check everything on this list.

The disk usage could just be your node walking all pieces after a restart to determine used space. It’s probably not related to the offline status.