The Auragen file system.


This article on the interesting Wave Transactional File System inspired me to look up an earlier file system that also used copy on write semantics. From: Anita Borg, Wolfgang Blau, Wolfgang Graetsch, Ferdinand Herrmann, and Wolfgang Oberle. 1989. Fault tolerance under UNIX. ACM Trans. Comput. Syst. 7, 1 (January 1989),…

What does the UNIX file system do?


Unix, Linux, Windows and other operating systems and the world wide web all support file systems with the familiar path file names  like "/home/snowden/travel/boardingpass.pdf" or "/system/passwords/secret/dontread.txt" although sometimes with different separator characters between the individual "flat" file names. For example, Windows uses "\". As long as we know how to…

Real-time Linux


My opinion has always been that the Linux-RT project was based on an unfixable engineering error.   A few words on the status and the future of RT: ----------------------------------------------- The situation since last years RTLWS (https://lwn.net/Articles/572740/) has not improved at all, it's worse than before. While shortly after RTLWS quite…

Dutch masters


Seen on Linux Weekly News. Ext4 maintainer Ted Ts'o has responded with a rare (for the kernel community) admission that technical concerns are not the sole driver of feature-merging decisions: It's something I do worry about; and I do share your concern. At the same time, the reality is that we…