add virtual file .config to show all the configurations

[tangyoupeng]

cat /jfs/.jfsconfig
{
 "Meta": {
  "Strict": false,
  "Retries": 10,
  "CaseInsensi": false,
  "ReadOnly": false,
  "OpenCache": 0,
  "MountPoint": "",
  "Subdir": ""
 },
 "Format": {
  "Name": "test-ce",
  "UUID": "d90ee4cb-6b93-44a7-ae56-be0a1cfea7bd",
  "Storage": "oss",
  "Bucket": "https://....aliyuncs.com",
  "AccessKey": "",
  "BlockSize": 4096,
  "Compression": "none",
  "Shards": 0,
  "Partitions": 0,
  "Capacity": 0,
  "Inodes": 0
 },
 "Chunk": {
  "CacheDir": "/var/jfsCache/d90ee4cb-6b93-44a7-ae56-be0a1cfea7bd",
  "CacheMode": 384,
  "CacheSize": 1024,
  "FreeSpace": 0.1,
  "AutoCreate": true,
  "Compress": "none",
  "MaxUpload": 20,
  "Writeback": false,
  "Partitions": 0,
  "BlockSize": 4194304,
  "GetTimeout": 60000000000,
  "PutTimeout": 60000000000,
  "CacheFullBlock": true,
  "BufferSize": 314572800,
  "Readahead": 0,
  "Prefetch": 1
 },
 "Version": "0.16-dev (2021-07-19 45ce2f1)",
 "Mountpoint": "/jfs-ce",
 "FastResolve": false,
 "AccessLog": ""
}