New year, new job

Since last month (Feb. 2012), I’ve started working for OnApp, a UK-based company developing cloud software for hosts.

My role as a Core Engineer in the Storage Platform Group involves architecting and engineering storage software components in the Linux kernel. Hopefully some of these components will be released soon, along with our product releases. For the moment stay tuned for more news & releases soon…

VirtualBox VM Disk Clone UUID problem

A VM disk image in Virtual Box (version 4.0.6) can be cloned using the command line “VBoxManage” tool with the “clonehd” command. Unfortunately, cloning a VM that already has a registered UUID in Virtual Box fails like that: ` #> ‘C:\Program Files\Oracle\VirtualBox\VBoxManage.exe’ clonehd .\MyVM.vdi .\NewVM.vdi VBoxManage.exe: error: Cannot register the hard disk ‘C:\VMs\MyVM.vdi’ {601b44ed-a301-45a7-8b17-9b2185040a1e} because a hard disk ‘C:\VMs\MyVM1.vdi’ with UUID {601b44ed-a301-45a7-8b17-9b2185040a1e} already exists VBoxManage.exe: error: Details: code E_INVALIDARG (0x80070057), component VirtualBox, interface IVirtualBox, callee IUnknown Context: “OpenMedium(Bstr(pszFilenameOrUuid).

Using TortoiseSVN with svn+ssh tunnel over non-standard ports

Configuring recent versions of toirtoise SVN to work with non-standard ports is a bit tricky. I tried editing the “subversion config file” through Settings->General->Edit, to using an ssh command line, like the one I’m using on Linux for the same repository, but that didn’t work. A quick hack-style solution is to go to TortoiseSVN->Settings->Network and set the SSH client to (assuming port number XX): “C:\Program Files\TortoiseSVN\bin\TortoisePlink.exe -P XX” (The hack is also described here: http://www.

A new project: building an e-commerce website

For the last few weeks I’ve been working on a new project, building an electronic store that will hopefully grow into a successful business. Unfortunately I’ve had to put all my other projects on hold for this, but hopefully this won’t take more than a couple of months :) …I know, famous last words. So, lots of new things for me to learn… I’ve been exploring the area of e-commerce platforms and played with a few that seemed promising.

Towards a new direction...

On July 1st, 2011 I left my position as Collaborating Researcher at FORTH-ICS to start working independently on new projects, solving new problems and learning new things. I’ll be posting updates about my work, projects and ideas in the next few months. Expecting exciting times ahead…

How to indent Python with VIM

Today I solved the problem of properly indenting my Python code with my favorite editor (Vim 7.2). I’ve had this issue for some time, because I had tuned Vim for writing in C/C++, which of course proves quite annoying when trying to write Python code (no braces darling!). Googling the issue I came up with the article “Indenting Python with VIM” which proves quite useful, but unfortunately did not work out of the box for me.

September News

Conferences/activities for September 2010

Copyright notice issue in IEEE Latex conference class

Following the IEEE Cluster 2010 poster paper camera-ready instructions I needed to add an IEEE copyright notice in the IEEE Latex conference class. Well, that was not straightforward at all, since the latex class file produced the notice overlapping with my text, and of course I didn’t want to break the paper’s format by modifying the class. After wasting some time, I googled the issue and found an answer here

Using the tkiz package in latex [on RHEL5, CentOS, Fedora or Ubuntu Linux]

I needed to “compile” a latex document using the tkiz package. After spending quite a few time trying to set this up on CentOS and Fedora, I finally gave up. Fortunately Ubuntu had a working pre-built package that includes pfg and tkiz, but this also required two online searches to deal with latex errors. A summary of the process for RHEL/CentOS/Fedora  I searched many times for RPMs with tkiz/pgf for RHEL 5 or FC12 (to install it on our CentOS server).

New papers at SNAPI and SYSTOR 2010

We’ve got two new papers to present at SNAPI 2010 and SYSTOR 2010.