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Various File Systems Used on Different Storage Devices
Bortlová, Pavlína ; Krčma, Martin (referee) ; Lojda, Jakub (advisor)
The bachelor thesis deals with storing data on various storage devices, namely on the HDD, SSD, flash drives, SD cards. In the teoretical part are discussed principles of functions storage media and data storage structure through various file system. In the practical part was measured read and write speeds selected combinations of file systems (FAT, NTFS, XFS, ext4, btrfs, exFAT, JFFS, F2FS) and storage devices (HDD, SSD, flash drive, sd card).
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Low-level data reading from computer data storages
Šalko, Jaroslav ; Ležák, Petr (referee) ; Burda, Karel (advisor)
The following work is topically focusing on data restore of selected memory devices. It could be divided into two theoretical parts and one practical. The first part consist explanation of these memory media’s structure, the mechanism of their storage and also how operating system approaches these data. This relates also to a file system, which is among with its most commonly used types described there as well. In the second theoretical part the study focuses on the storage damage problematics. Various types of damage are shown and I examine how we could approach them. The work concentrates on possibilities which owners of the damaged storage media have with an emphasis on specialized companies. Therefore the study contains brief information of four selected domestic companies which are offering data restore on the Czech market. The complete list of services, which these companies offer to their customers, is shown in the chart found by the end of chapter. The second option in order of solving media damage problems are freeware programmes. On the basis of an internet poll dealing with the topic „best programmes for data restore“, I have chosen three programmes to be examined. The examination consisted of uploading certain files on the media storage which was formated by high level method afterwards. Through these three programmes I tried to restore the lost data. The results are included in a chart found by the end of each sub-chapter. The practical part of my work deals with linux program for data restore DDrescue. My effort consists of developing and creating an user friendly interface with intuitive manipulation of this helpful tool. My goal is thus spreading this program into the public and providing them simple tool for efficient low-level data restore.
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The Sport Activity Digital Recorder
Raninec, Michal ; Žák, Jaromír (referee) ; Macháň, Ladislav (advisor)
This paper discuss the design of multifunctional device used as the digital recorder for sport activity. The general aim is to explore theory issues, construct the device and develope software for the application. Components were chosen considering low weight and power consumption and with as accurate tracking as possible.
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RedirFS - Application on Data Compression
Podroužek, Jan ; Čejka, Rudolf (referee) ; Kašpárek, Tomáš (advisor)
This thesis in its first part examines the problems of developing linux kernel modules, specifically modules implementig RedirFS filters. In the next part it considers different types of copression algorithms and the implementation specifics on the CryptoAPI framework in the linux kernel. Finally it describes the design and operation of the CompFLT module that implements a RedirFS compression filter. Benchmarks done using the CompFLT module are presented in the last section.
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Design of Distributed Filesystem
Ďulík, Jan ; Michal, Bohumil (referee) ; Kašpárek, Tomáš (advisor)
Main goal of this work is to design and implement distributed file system for storing data of project. There can be more geographical separated work groups involved in the project. Big deal is done with analysing the situations, which can occur while using the distributed file system. The work is concerned with choosing suitable data replication politic while considering miscellaneous work models and drain. The last part describes implementation of distributed file system for Linux operating system with use of FUSE and rsync.
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RedirFS - Application on Data Encryption
Zůna, Pavel ; Bidlo, Michal (referee) ; Kašpárek, Tomáš (advisor)
This thesis focuses on design and implementation of a cryptographic filter for the Redirecting Filesystem Framework (RedirFS for short) in the form of a Linux kernel module. It starts by giving the reader a general overview of modern cryptography and encryption. Before diving into the filter specifics, it takes a tour of the most important features of RedirFS. When done with introductory chapters, it describes the design choices made considering their benefits and limitations. The final chapter is completely devoted to cipherflt: a proof of concept implementation of the cryptographic filter.
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Big Block File System
Rajman, Jakub ; Lampa, Petr (referee) ; Čejka, Rudolf (advisor)
Master's thesis treats of implementation of big block file system for FreeBSD operating system. The introduction of this document is dedicated to theoretically analysis, which is oriented on history, sense and usage of file systems. Next chapter describes the architecture of UFS/FFS file system. Implementation part starts with introducing design of new file system, which was isnpired by MSDOSFS file system. Last part of this thesis presents implementation of file system with great emphasis on problems, which can happen during programming.
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Connecting SD Memory Card to Microcontroller
Laurinc, Pavel ; Kubek, Ján (referee) ; Škarvada, Jaroslav (advisor)
Author concerns with SD memory cards and microcontroller Atmel ATmega128. He describes their architecture, features, properties and technology used in devices. He is mentioning principle of communication protocols used by SD card, through that cards can communicate with other connected devices. He analyzes the functionality of FAT file system. He describes the design and implementation of interfaces to connect the SD cards to microcontroller. He explains software solutions of this project and gives impartial view to usage and comparisons of implemented modes of communication witch card.
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