Hello Roland,
I think you should consider the DHT option: lookup-unhashed
http://gluster.com/community/documentation/index.php/Translators/cluster/distribute
Please let us know if this does the job
Regards,
Deian
Roland Rabben wrote:
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 Vahriç Muhtaryan <[email protected]>
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: [email protected] [mailto:
[email protected]] On Behalf Of Roland Rabben
Sent: Sunday, December 06, 2009 6:29 PM
To: [email protected]
Subject: [Gluster-users] 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
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