Seems that nobody is answering my concern :) I think these post partially answer my question, but I think I still need to perform the experiment to understand more:
http://gluster.org/pipermail/gluster-users/2011-February/006649.html http://gluster.org/pipermail/gluster-users/2011-February/006642.html http://review.gluster.com/#/c/158/ http://www.ashishnepal.com/glusterfs-centos/ Review-158 is the most detail info I found on the Internet, and did not found it in any Gluster documentation. Maybe I should start my own wiki collecting all the information found on the Internet. Thanks. On Wed, Jan 8, 2014 at 10:48 AM, Sharuzzaman Ahmat Raslan < [email protected]> wrote: > Hi all, > > I have not tested this yet, but would like to get your comment. > > I have a customer that is currently running BackupPC system, and the local > disk is steadily going to run out of space soon. > > So I'm thinking of helping this customer move the storage to gluster > > They have limited budget, so buying new machine with big disk is not an > option. But, they have a couple of old machine available, and the disk size > differs in each of them > > So, I'm planning to grow the storage slowly for them. > > The first step that I think is to get 2 replicated storage nodes, so that > redundancy can be increased. > > Once that work, I'm planning to introduce another node to get a > distributed-replicated system. This is the part that I'm not sure. > > Let say the customer have nodes like this: > node1: 100GB (p1n1) > node2: 200GB (p1n2,p2n2) > node3: 300GB (p1n3) > > node1 is currently the single BackupPC storage. I can partition node2 to > get a 100GB (p1n2), then join with node1 (p1n1) to get a replicated gluster > storage. > > When I introduce node3 later, I plan to use the extra 100GB from node2 > (p2n2), to join with 100GB from node3 (p1n3). Now, I have 4 bricks defined. > 1 brick in node1 (p1n1), 2 brick in node2 (p1n2,p2n2), and 1 brick in node3 > (p1n3). > > The question is, how to change from replicated system (p1n1-p1n2), to > distributed-replicated [(p1n1-p1n2)(p2n2-p1n3)] in a running system? > > Ideas? > > Thanks. > > > -- > Sharuzzaman Ahmat Raslan > -- Sharuzzaman Ahmat Raslan
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