In previous blog, I explained a method ( oci-systemd-hook) to run systemd gluster containers using oci-system-hook in a locked down mode. Today we will discuss about how to run gluster systemd containers without ‘privilege’ mode !! Awesome .. Isnt it ? I owe this blog to few people latest being…

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In previous blog posts we discussed, how to use GlusterFS as a persistent storage in Kubernetes and Openshift. In nutshell, the GlusterFS can be deployed/used in a kubernetes/openshift environment as : *) Contenarized GlusterFS ( Pod ) *) GlusterFS as Openshift service and Endpoint (Service and Endpoint). *) GlusterFS volume…

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In this context I am talking about the dynamic provisioning capability of ‘glusterfs’ plugin in Kubernetes/Openshift. I have submitted a Pull Request to Kubernetes to add this functionality for GlusterFS. At present, there is no existing network storage provisioners in kubernetes eventhough there are cloud providers. The idea here is…

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We organized Docker Global Hack Day at Red Hat Office on 19th Sep’15. Though there were lots RSVPs, the turn up for the event was less than expected. We started the day by showing the recording of kick-off event. The … Continue reading →

What is libgfapi ? User-space library for accessing data in GlusterFS Filesystem-like API Runs in application process no FUSE, no copies, no context switches …but same volfiles, translators, etc. Could be used for Apache/nginx modules, MPI I/O (maybe), Ganesha, etc….

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 […]

Learn how to install, benchmark and optimize this popular, shared-nothing and scalable open-source distributed filesystem in this special 12 page report.

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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 […]

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 […]