This post describes recent tests done by Red Hat on an 84 node gluster volume.  Our experiments measured performance characteristics and management behavior. To our knowledge, this is the largest performance test ever done under controlled conditions within the organization (we have heard of larger clusters in the community but do not know any details about them). Red Hat officially …Read more

This is an example of how to configure an environment where you can test CloudStack and Gluster. It uses two machines on the same LAN, one acts as a KVM hypervisor and the other as storage and management server. Because the (virtual) networking in the …

This is an example of how to configure an environment where you can test CloudStack and Gluster. It uses two machines on the same LAN, one acts as a KVM hypervisor and the other as storage and management server. Because the (virtual) networking in the …

Block device translator Block device translator (BD xlator) is a new translator added to GlusterFS recently which provides block backend for GlusterFS. This replaces the existing bd_map translator in GlusterFS that provided similar but very limited functionality. GlusterFS expects the underlying brick to be formatted with a POSIX compatible file system. BD xlator changes that […]

As described in my previous blog post, QEMU supports talking to GlusterFS using libgfapi which is a much better way to use GlusterFS to host VM images than using the FUSE mount to access GlusterFS volumes. However due to some bugs that exist in GlusterFS-3.4, any invalid specification of GlusterFS drive on QEMU command line […]

In my last blog post on QEMU-GlusterFS, I described the integration of QEMU with GlusterFS using libgfapi. In this post, I give an overview of the recently added discard support to QEMU’s GlusterFS back-end and how it can be used. Newer SCSI devices support UNMAP command that is used to return the unused/freed blocks back […]

We are very pleased to inform you that GlusterFS 3.4 has now hit GA! This marks an incredible milestone for the Gluster community, and pushes GlusterFS into exciting new directions, including virtual block storage, OpenStack integration and a lot more. -> Download here. Changes Of Note Improvements for Virtual Machine Image Storage A number of …Read more

I wanted to take a moment and share all the things that are going on in the Gluster Community. It really has been an amazing year, and we’re only halfway through. Here’s a recap for those of you watching from … Continue reading →

I wanted to take a moment and share all the things that are going on in the Gluster Community. It really has been an amazing year, and we’re only halfway through. Here’s a recap for those of you watching from home: Launched the Gluster Community Forge in early May – http://forge.gluster.org/ as of now, there …Read more

Last month, over 80 users and developers gathered at Intel’s Shanghai China Campus for a two-day workshop centered on oVirt, the Open Virtualization management platform. Jackson He, General Manager of Intel Asia and Pacific R&D Ltd. and Intel Software and … Continue reading →

By now, you may have heard about the recent work being done to integrate GlusterFS with QEMU. The engineers at IBM’s Linux Technology Center in Bangalore deserve a lot of credit for their work here. Bharata Rao, Deepak Shetty and Mohan Kumar have been hard at work implementing a GlusterFS device driver for QEMU that …Read more

GlusterFS is a distributed file system implemented in user space. It is strictly not a native file system in itself but is an aggregator of different file systems. GlusterFS can aggregate individual file system mount points or directories (called bricks in gluster terminology) to provide a single unified file system namespace. In addition to NFS […]