Gluster blog stories provide high-level spotlights on our users all over the world
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 […]
This post shares some experiences I’ve had in simulating a block device in gluster. The block device is a file based image, which acts as the backend for the Linux SCSI target. The file resides in gluster, so enjoys gluster’s feature set. But the client only sees a block device. The Linux SCSI target presents …Read more
Last year I attended AWS re:Invent, kinda, sorta. We were in Las Vegas to put on the first Apache CloudStack conference and most of my time and brainpower were consumed with last-minute planning for that event. I did spend time in the developer area, on exhibit floor, and some of the after-parties – but it […]
Install And Use SALTStack In A Mixed Environment
Salt is a new approach to infrastructure management. Easy enough to
get running in minutes, scalable enough to manage tens of thousands of
servers, and fast enough to communicate with them in seconds….
Shortly before VMware’s VSAN was released, I had designed my new lab using GlusterFS across 2 to 4 nodes on my Dell C6100. Since this server did not have a proper RAID card and had 4 nodes total, I needed to design something semi-redundant incase a host were to fail. Scaling: You have a few […]
Next week is a big one for Linux and Open Cloud practitioners and enthusiasts: It’s the annual North American LinuxCon (and CloudOpen), put on by the Linux Foundation – and, following LinuxCon, the Gluster community is putting on a Gluster Community Day on September 19th. Naturally, LinuxCon is on my “don’t miss” list of events, […]
Hey there, I’ve done a bit of puppet-gluster hacking lately to try to squeeze some extra features and testing in before Linuxcon. Here’s a short list: SELinux fixes to keep Dan Walsh happy 🙂 Ping and status checks before volume … Continue reading →
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 […]
Anyone who knows me knows, that I’ve been a VMware user for a long time. I’ve spent a large chunk of my career building virtualization solutions for different companies based on VMware tech. I’ve been active in the VMware community, and I’ve got to say it’s one of the healthiest I’ve seen in a long… Read more »
After quite some delay, I have been able to try out a work-in-progress kernel-tree (3.7) from Sascha Hauer for the Genesi EFIKA MX Smartbook. The Fedora Remix image I have created uses the barebox bootloader to load the device-tree and the kernel (a…
Recently I bought a new keyboard, which I intend to use when my laptop is placed in its docking station. There are two external monitors connected, making the display of the laptop rather useless (only two outputs are supported at the same time). In no…
Automatic network configuration with DHCP is great. But if you need to use multiple separated networks at once, it gets more difficult pretty quickly. For example, my RHEL-6 laptopconnects through wifi to the network at home, which provides i…
I just wrapped up my presentation at the Gluster Workshop at CERN where I discussed Open Source advantages in tackling converged infrastructure challenges. Here is my slidedeck. Just a quick heads up, there’s some animation that’s lost in the pdf export as well as color commentary during almost every slide. During the presentation I demo’ed… Read more »
This started as a response to a twitter conversation with @DuncanYB and @joshobrien77 re: converged infrastructure. Duncan recently posted a great blog post about Converged compute and storage. Go read that first. I’ll wait here. Welcome back! Ok, to start I agree with Duncan’s comments that Nutanix is certainly in the leader group for what’s… Read more »
Setting Up A Standalone Storage Server With GlusterFS And Samba On Debian Squeeze
This tutorial shows how to set up a standalone storage server on
Debian 6.0, using GlusterFS and SAMBA, and custom scripts and settings
to make life easier.
Not all projects I am regularly working on use the same CodingStyle. This is very unfortunate, and sometimes makes it time consuming to provide acceptable patches. One common example is that some project indent with a <tab>, where others expect <4-spaces>/>.
$ git config --add vim.settings 'tabstop=4 expandtab'
let git_settings = system("git config --get vim.settings")
exe "set" git_settings
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 […]
Back in February 2011, when I joined what ultimately became part of the GlusterFS development team at Red Hat, I had already been interested in low power — as in low power consumption — computing for a long time. For most of my earlier explorations I had used a Linksys WRT54G router — which uses …Read more