Hi Andreas, On Mon, 2012-12-10 at 21:05 +0100, Andreas Rohner wrote: > Hi, > > I am a computer science student from Austria and I am looking for a > topic for my masters thesis. I am very interested in log-structured file > systems and I thought of doing a few things from the TODO list on the > website: http://www.nilfs.org/en/current_status.html > I am particularly interested in the "Online defrag" feature, but I > haven't looked into the source code yet. I have a few questions > concerning that and any help would be greatly appreciated: > > 1. Has someone already started working on it? As I know, you will be the first. :-) > 2. Is there some fundamental difficulty that makes it hard to implement > for a log-structured fs? I think that the most fundamental possible issue can be a possible performance degradation. But first of all, from my point of view, it needs to discuss what the online defrag is and how it is possible to implement it. What do you mean personally by online defrag? And how do you imagine online defrag mechanism for NILFS2 in particular? When you describe your understanding then it will be possible to discuss about difficulties, I think. :-) > 3. How much work would it entail? Is it doable for one well versed C > programmer in 2 to 3 months? > I think that it is more easy to predict duration of some implementation task when you know something about a developer. But, as I understand, you don't familiar with NILFS2 source code. And how deep your experience in Linux kernel implementation? So, it is not so easy to forecast something. :-) I suggest to begin implementation. Anyway, it will be very useful for your masters thesis, I think. With the best regards, Vyacheslav Dubeyko. > best regards, > Andreas Rohner > > > -- > To unsubscribe from this list: send the line "unsubscribe linux-nilfs" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-nilfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
