Hi, Didi
Another question about glusterfs, I only used host1, host2 and host3 as gluster cluster,
see:
```
[root@vhost2 ~]# gluster pool list
UUID Hostname State
b30d556d-73f9-4d63-8bc6-8ee541684b9c gs3.yhmk.sg Connected
2eb2f9fe-0237-4825-bf89-facc9d99534a gs1.yhmk.sg Connected
c6e85a13-5186-4433-a3c8-0284f826361d localhost Connected
```
But, why I run `gluster pool list` on host4, the result is:
```
[root@vhost4 ~]# gluster pool list
UUID Hostname State
c6e85a13-5186-4433-a3c8-0284f826361d gs2.yhmk.sg Disconnected
2eb2f9fe-0237-4825-bf89-facc9d99534a gs1.yhmk.sg Connected
b30d556d-73f9-4d63-8bc6-8ee541684b9c gs3.yhmk.sg Connected
4259036b-f4db-4d89-bb88-4dcf3c5f882c localhost Connected
[root@vhost4 ~]# gluster volume list
data
engine
vmstore
```
It's strange, why the host4 in the cluster, and can check the volume info?