Browsing by Author "Laine, Teijo"

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Distributed file system in LinDX
(2009) Laine, Teijo
Helsinki University of Technology | Master's thesis
DX 200 is a distributed computing system comprising of networked computer units. Majority of the computer units do not have a persistent storage such as a hard drive. These computer units use a RAM disk as their storage medium. Since the contents of the RAM disk are lost if the computer unit restarts, persisting updates cannot be done to the file system. Computer units that use RAM disk load the operating system and the file system contents either from a computer unit that has a hard drive or from a computer unit that has already done the loading. For computer units using RAM to store their file system, it would be useful to be able to store the changes in case a restart occurs. Persistent storage could he used for example to store computer logs and to manage configuration files more easily. The aim of this thesis is to design and implement a distributed file system that allows Linux-based computer units to perform persisting file system changes while using RAM disks. The file system can also be shared by multiple computer units.