使用 rsync 出错：rsync: chgrp "test" failed: Operation not permitted

Question

两台服务器，A服务器为更新源服务器；B服务器为目的服务器；
现在把A服务器的网站文件备份到B服务器上，相关信息如下：
B服务器（rsync服务端）rsyncd.conf配置：

uid = nobody
gid = nogroup
use chroot = no
max connections = 100
timeout = 600
pid file = /var/run/rsyncd.pid
lock file = /var/run/rsyncd.lock
log file = /var/log/rsyncd.log
[test]
path = /data/www/test
ignore errors
read only = no
list = no
hosts allow = *
auth users = test
secrets file = /etc/rsyncd/test_server.pwd

A服务器已经安装rsync，在终端输入：

rsync -vzrtopg --delete --progress /data/www/test test@192.168.0.1::test --password-file=/etc/rsyncd/test.pwd

监控B服务器上的rsyncd.log：

2016/03/28 11:40:23 [30017] params.c:Parameter() - Ignoring badly formed line in config file: ignore errors
2016/03/28 11:40:23 [30017] connect from mail18.f.tsender.com (192.168.0.1)
2016/03/28 11:40:23 [30017] rsync to test/ from [e-mail] (192.168.0.1)
2016/03/28 11:40:23 [30017] receiving file list
2016/03/28 11:40:23 [30017] rsync: chgrp "test" (in test) failed: Operation not permitted (1)
2016/03/28 11:40:23 [30017] rsync: chgrp "test/.file-dump.txt.NZqVgf" (in test) failed: Operation not permitted (1)
2016/03/28 11:40:23 [30017] sent 247 bytes  received 156 bytes  total size 8

服务端文件已经生成，如何解决上面的问题，如果您能给出一些建议，对我来说是莫大的帮助。

Answer 1

不是写的很清楚：rsync: chgrp "test" (in test) failed: Operation not permitted (1)了吗？

/data/www/test　　这个目录权限是不是test用户所有呢？