Archive for 'Linux Gluster'

Slides from my introduction to gluster presentation

I gave a talk on Gluster this evening at our local UNIX users group. I had a good time talking, and enjoyed interacting with everyone that came out. The introduction to Gluster presentation slides are available in the presentation section of my website, and I’ll make sure to get them linked to the users group […]

Which file system should I use with Gluster?

I was reading through the Gluster 3.2.5 release notes today and came across the following blurb: Red Hat recommends XFS when formatting the disk sub-system. XFS supports metadata journaling, which facilitates quicker crash recovery. The XFS file system can also be de-fragmented and enlarged while mounted and active. Any other POSIX compliant disk file system, […]

Another interesting finding about gluster replicas

In a previous post I talked about my problems getting gluster to expand the number of replicas in a volume. While experimenting with the gluster utilities “add-brick” option I wanted to see if adding two more bricks would replicate the existing data across four bricks (two old, two new), or if the two new bricks […]

Removing a gluster volume doesn’t remove the volume’s contents

I made another interesting discovery this weekend while playing around with the gluster volume deletion option. Prior to creating a volume with a new layout, I went through the documented process to remove my volume: $ gluster volume stop glustervol01 Stopping volume will make its data inaccessible. Do you want to continue? (y/n) y Stopping […]

Some interesting insights on the gluster replicated volume replica value

While playing around with gluster, I had an interesting finding about the way gluster handles replicated volumes. The gluster volume I am using for testing is a replicated volume with a replica factor of 2 (the replica factor determines how many copies of your data will be made). I wanted to add a third replica […]

Installing gluster on a CentOS machine via rpmbuild

I talked previously about my experience getting gluster up and running on Fedora and CentOS Linux servers. The installation process as it currently stands is different between Fedora and CentOS servers. The Fedora package maintainers have build RPMs for gluster, so you can use yum to install everything needed to run gluster: $ yum install […]

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