es-node output "no space on disk" with disk space

[qizhou]

INFO [10-26|00:34:02.265] The nonces are exhausted in this slot, waiting for the next block shard=0 thread=0 block=159,989 nonce=1,048,576
WARN [10-26|00:34:05.868] Peerstore put EthStorageENRKey error     err="write esnode_peerstore_db/000019.log: no space left on device"
WARN [10-26|00:34:10.869] Peerstore put EthStorageENRKey error     err="write esnode_peerstore_db/000019.log: no space left on device"
INFO [10-26|00:34:10.896] Updating tasks with L1 new head          blockNumber=159,990 blockTime=1,698,280,440 now=1,698,280,450

root@ax101-qi0 ~/github/es-node/es-data # df . -h
Filesystem      Size  Used Avail Use% Mounted on
/dev/md2        7.0T  4.5T  2.2T  68% /
root@ax101-qi0 ~/github/es-node/es-data # du . -sh
1.1G    .
root@ax101-qi0 ~/github/es-node/es-data #54 

[qizhou]

This happens when I perform fio test and fill the disk with full data. After deleting the data, es-node fails to recover from ENOSPC error.