My problem is that I can't change directory names without a lot of hassle. We have a hashed directory structure in our application that we rely on GlusterFS to store. Is there a way of copying files behind GlusterFS' back and have GlusterFS pick up on the change with a self heal? It seems that a system designed for scalability should tolerate eh... being scaled...? Regards Roland 2009/12/6 Vahri? Muhtaryan <vahric at doruk.net.tr> > One idea , docs said that you should create new directory. Could you create > a new directory after add another server and copy files from old directory > to new one, then everything will be distributed. > > I know that glusterfs do not have reallocation mechanism for distribute > data to new added bricks for achive performance and capcity problem. > > > *Now the question is what about adding a new server? > > Currently hash works based on directory level distribution. i.e, a given > file's parent directory will have information of how the hash numbers are > mapped to subvolumes. So, adding new node doesn't disturb any current setup > as the files/dirs present already have its information preserved. Whatever > new directory gets created, will start considering new volume for scheduling > files. > > Regards > Vahric > > -----Original Message----- > From: gluster-users-bounces at gluster.org [mailto: > gluster-users-bounces at gluster.org] On Behalf Of Roland Rabben > Sent: Sunday, December 06, 2009 6:29 PM > To: gluster-users at gluster.org > Subject: Adding bricks to DHT > > Hi > I have a GlusterFS DHT system that I need to expand in a few days. Reading > up on the documentation it seems to me that adding bricks won't solve our > problem because of how the hash works. > I have a fairly static folder structure, but the number of files are > growing fast. From what I understand, adding bricks will not allow new files > to be stored on the new bricks unless they are stored in new directories. > > So my questions are: > 1. How can I make sure the new bricks are used? > 2. Is there a way to "rebalance" content over the new and old bricks? > > I can't tolerate much downtime on my FS. > > I am using GlusterFS 2.06. > > Regards > Roland Rabben > > -- Roland Rabben Founder & CEO Jotta AS Cell: +47 90 85 85 39 Phone: +47 21 04 29 00 Email: roland at jotta.no
