show more statistic information in status subcommand

[Hexilee]

Close #2957

With this PR, we can find the FsStat information in the status subcommand:

./juicefs status redis://localhost
2022/11/17 12:07:01.464620 juicefs[328399] <INFO>: Meta address: redis://localhost [interface.go:414]
2022/11/17 12:07:01.466300 juicefs[328399] <INFO>: Ping redis: 80.055µs [redis.go:2988]
{
  "Setting": {
    "Name": "myjfs",
    "UUID": "4bdf1c96-c1cd-4450-84af-d16162af60c0",
    "Storage": "minio",
    "Bucket": "http://127.0.0.1:9000/jfs",
    "AccessKey": "minioadmin",
    "SecretKey": "removed",
    "BlockSize": 4096,
    "Compression": "none",
    "EncryptAlgo": "aes256gcm-rsa",
    "KeyEncrypted": true,
    "MetaVersion": 1
  },
  "Sessions": [
    {
      "Sid": 23,
      "Expire": "2022-11-17T12:07:53+08:00",
      "Version": "1.1.0-dev+2022-11-16.efeccc5d",
      "HostName": "Arch",
      "MountPoint": "/mnt/jfs",
      "ProcessID": 279925
    }
  ],
  "Statistic": {
    "UsedSpace": 39661568,
    "AvailableSpace": 1125899867181056,
    "UsedInodes": 607,
    "AvailableInodes": 10485760
  }
}

Moreover, we add a flag --more or -m to show more information that may slowly be scanned.

2022/11/17 12:07:06.179401 juicefs[328426] <INFO>: Meta address: redis://localhost [interface.go:414]
2022/11/17 12:07:06.180813 juicefs[328426] <WARNING>: AOF is not enabled, you may lose data if Redis is not shutdown properly. [info.go:83]
2022/11/17 12:07:06.181005 juicefs[328426] <INFO>: Ping redis: 140.293µs [redis.go:2988]
Delayed Slices count: 582377                                                          ⠴
Delayed Slices bytes: 256.09 GiB (274969369656 Bytes)                                 ⠴
 Delayed Files count: 0                                                               ⠴
 Delayed Files bytes: 0.00 b     (0 Bytes)                                            ⠴
{
  "Setting": {
    "Name": "myjfs",
    "UUID": "4bdf1c96-c1cd-4450-84af-d16162af60c0",
    "Storage": "minio",
    "Bucket": "http://127.0.0.1:9000/jfs",
    "AccessKey": "minioadmin",
    "SecretKey": "removed",
    "BlockSize": 4096,
    "Compression": "none",
    "EncryptAlgo": "aes256gcm-rsa",
    "KeyEncrypted": true,
    "MetaVersion": 1
  },
  "Sessions": [
    {
      "Sid": 23,
      "Expire": "2022-11-17T12:08:05+08:00",
      "Version": "1.1.0-dev+2022-11-16.efeccc5d",
      "HostName": "Arch",
      "MountPoint": "/mnt/jfs",
      "ProcessID": 279925
    }
  ],
  "Statistic": {
    "UsedSpace": 39661568,
    "AvailableSpace": 1125899867181056,
    "UsedInodes": 607,
    "AvailableInodes": 10485760,
    "DeletedSliceCount": 620237,
    "DeletedSliceSize": 294188398321
  }
}

[CLAassistant]

All committers have signed the CLA.

[codecov-commenter]

Codecov Report

Base: 58.76% // Head: 58.63% // Decreases project coverage by -0.12% ⚠️

Coverage data is based on head (1b5e6e2) compared to base (2731d9e).
Patch coverage: 22.13% of modified lines in pull request are covered.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2977      +/-   ##
==========================================
- Coverage   58.76%   58.63%   -0.13%     
==========================================
  Files         141      141              
  Lines       24605    24714     +109     
==========================================
+ Hits        14458    14490      +32     
- Misses       8263     8331      +68     
- Partials     1884     1893       +9     

Impacted Files	Coverage Δ
pkg/meta/base.go	66.79% <0.00%> (-0.86%)	⬇️
pkg/meta/interface.go	45.45% <ø> (ø)
pkg/meta/sql.go	63.02% <16.66%> (-0.81%)	⬇️
pkg/meta/redis.go	69.01% <22.22%> (-0.75%)	⬇️
pkg/meta/tkv.go	73.97% <27.27%> (-0.47%)	⬇️
cmd/status.go	52.85% <30.00%> (-17.88%)	⬇️
pkg/meta/tkv_etcd.go	71.57% <0.00%> (-1.06%)	⬇️
pkg/meta/tkv_mem.go	86.61% <0.00%> (-0.71%)	⬇️
pkg/object/sftp.go	51.09% <0.00%> (-0.19%)	⬇️
... and 6 more

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