For example: volume ns-afr0 type cluster/afr subvolumes remote-ns1 remote-ns2 remote-ns3 remote-ns4 end-volume Anything written to ns-afr0 will be AFRed to all the 4 subvolumnes. So how many copies you want to get, how many subvolumnes you should set. But I failed to activate the auto-healing function. Step1: I create a client-AFR based unify, both ns and storage are AFRed. I name the 2 nodes node1 and node2. Step2: glusterfs -s node1 -n unify0 /mnt Step3: cp something /mnt/xxx Step4: Check node1 and node2's storage, found 2 copy of the file xxx. Step5: Stop node2's glusterfd Step6: cat something else >> /mnt/xxx Step7: Stat node2's glusterfd Step8: Sleep 100 Step9: Check node2's storage, found the file xxx with no change through Step3. From: gluster-users-bounces at gluster.org [mailto:gluster-users-bounces at gluster.org] On Behalf Of Stas Oskin Sent: Saturday, December 06, 2008 9:53 AM To: gluster-users at gluster.org Subject: AFR questions Hi. I have some AFR-related questions which I decided to put to separate email: 1) How can I specify that AFR stores files on separate servers (in order to prevent data loss when server goes down)? 2) How can I specify how many copies of the files to store? 3) Is it true that no rsync like functionality is supported - meaning whole file needs to be replicated? Or there is some bits delta replication mechanism? 4) How well unity/DHT would work with several disks per server at once (as discussed on another email, where the disks in server are separated one from another, and not overlaid by any raid, jbod or lvm)? What developers think about this and the question above? 5) How this whole setup could be managed in NUFA(?) approach, where each server is a client as well? I mean, what is the advised approach to control all the settings until the central configuration comes in version 1.5? Thanks in advance. Regards.
