Cannot create bucket with object lock enabled

[tspoeri]

I try to create a bucket using mc with object lock enabled but it fails.

Expected Behavior

Executing

mc mb --with-lock dev/bucket-with-lock

should create the bucket bucket-with-lock.

Current Behavior

Creation of the bucket fails:

mc mb --with-lock dev/bucket-with-lock
mc: <ERROR> Unable to make bucket `dev/bucket-with-lock`. A header you provided implies functionality that is not implemented

Context

Creating a bucket with object lock enabled is a prerquisite for locking objects as described here: https://github.com/minio/minio/tree/master/docs/retention

Your Environment

MinIO running as Docker container on Ubuntu 20.04 LTS

uname -a
Linux ubuntu-dev 5.4.0-39-generic #43-Ubuntu SMP Fri Jun 19 10:28:31 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux

docker --version
Docker version 19.03.8, build afacb8b7f0

mc --version
mc version RELEASE.2020-06-26T19-56-55Z

mc admin info dev
●  localhost:9000
   Uptime: 2 hours 
   Version: 2020-07-02T00:15:09Z
   Network: 1/1 OK 

[kannappanr]

@tspoeri object locking is not supported in fs mode. You need to use erasure-coded mode to use the locking feature.

[tspoeri]

@kannappanr I'm new to MinIO, is there a documentation which lists limitations depending on modes, etc?
At first sight it's not clear to me why locks depend on erasure-coded mode.

[harshavardhana]

@kannappanr I'm new to MinIO, is there a documentation which lists limitations depending on modes, etc?
At first sight it's not clear to me why locks depend on erasure-coded mode.

FS mode think of it as minimal implementation, erasure coded is full fledged