Object storage server emulator

Dovecot has an object storage emulator called fs-server. It can be used to emulate Scality sproxyd. S3 is not currently supported.

This tool is not intended for production use. This can be ran as part of any Dovecot deployment, but for best results, you should use a dedicated instance for this.

Configuration

First configure the storage location:

fs_server_backend = metawrap:posix:prefix=/var/fsserver/:dirs

Then you can configure the listener.

For sproxyd, use

service fs-server {
  inet_listener sproxyd {
    port = 801
  }
}

To configure a backend to use sproxyd, configure

obox {
  fs fscache {
    size = 512M
    path = /var/cache/mails/%{user | sha1 % 4}
  }
  fs dictmap {
    dict proxy {
      name = cassandra
      socket_path = dict-async
    }
    #lock_path = /tmp # Set only without lazy_expunge plugin
  }
  fs sproxyd {
  }
}
metacache {
  fs compress {
  }
  fs dictmap {
    dict proxy {
      name = cassandra
      socket_path = dict-async
    }
  }
  fs sproxyd {
  }
}

Note that sproxyd needs Dictmap to work.

Files are stored as-is into the specified directory.

Debugging

To enable debugging, add

service fs-server {
  executable = fs-server -D