JuiceFS cannot use redis v7

[OrvilleQ]

Related to redis/go-redis#2085, go-redis v8 is not compatible with redis v7.

Is there any plan to upgrade this dependencies to v9 to support redis v7?

[zhijian-pro]

We need to test whether go-redis v9 works with redis v6.

[jacksgt]

I believe I just ran into this exact issue. Installed JuiceFS v0.17.5 with Redis 7.0.0
Provisioning a volume and writing to it worked fine, but upon destroying I get:

# juicefs status redis://:[email protected]:6379/1
2023/02/11 21:03:10.560897 juicefs[47] <INFO>: Meta address: redis://:****@redis-metadata-master.juicefs.svc.cluster.local:6379/1 [interface.go:402]
2023/02/11 21:03:10.562675 juicefs[47] <INFO>: Ping redis: 38.755µs [redis.go:2888]
{
  "Setting": {
    "Name": "juicefs-example",
    "UUID": "a06362c5-c64a-4165-bbe3-1522ebb017ac",
    "Storage": "minio",
    "Bucket": "https://example.com/foobar",
    "AccessKey": "foobar",
    "SecretKey": "removed",
    "BlockSize": 4096,
    "Compression": "none",
    "KeyEncrypted": true,
    "TrashDays": 1,
    "MetaVersion": 1
  },
  "Sessions": []
}

# juicefs destroy redis://:[email protected]:6379/1 a06362c5-c64a-4165-bbe3-1522ebb017ac --force
2023/02/11 21:03:30.206832 juicefs[73] <INFO>: Meta address: redis://:****@redis-metadata-master.juicefs.svc.cluster.local:6379/1 [interface.go:402]
2023/02/11 21:03:30.209044 juicefs[73] <INFO>: Ping redis: 44.738µs [redis.go:2888]
Deleted objects count: 0                                 ⠋                                 
Deleted objects count: 0   
Deleted objects count: 0   
2023/02/11 21:03:30.231855 juicefs[73] <FATAL>: reset meta: ERR unknown command 'flushdb', with args beginning with:  [destroy.go:208]

For the moment, at least a big warning in the docs would be helpful.