Hi all, I am new user to this QlusterFS project. I just started the test in local environment with 3 server nodes and 2 client nodes. So far, it works fine and now I have two questions: 1. I cannot understand the option related to "namespace" clearly. I find that in most of the server conf files separated "DS" and "NS" volumes, what is the purpose of it? e.g. in http://www.gluster.org/docs/index.php/GlusterFS_High_Availability_Storage_wi th_GlusterFS there are "ds" and "ns" volumes in this config volume mailspool-ds type storage/posix option directory /home/export/mailspool end-volume volume mailspool-ns type storage/posix option directory /home/export/mailspool-ns end-volume 2. In my testing environment, I applied the replication function to replicate from one server to other 2 servers. Then I unplug one of the server. On client side it still ok to access the mount point. After a period, I up the unplugged server again and find that all data during the outage period does not appear on this server. Any steps required to sync data back to new recovered server? Thanks, Felix Chu