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| | File system - Wikipedia, the free encyclopedia |
 | | The hierarchical filesystem was an early research interest of Dennis Ritchie of Unix fame; previous implementations were restricted to only a few levels, notably the IBM implementations, even of their early databases like IMS. | | | In many situations, filesystems other than the root need to be available as soon as the operating system has booted. | | | After the success of Unix, Ritchie extended the filesystem concept to every object in his later operating system developments, such as Plan 9. |
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http://en.wikipedia.org/wiki/Filesystem
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| | Filesystems |
| | Once an initial filesystem is running, the incremental memory cost for additional filesystems is minimal, since only the code to implement the new filesystem protocol would be added to the system. | | | Filesystems that provide network file access to the filesystems on remote host computers. | | | A "filesystem" shared library implements a filesystem protocol or "personality" on a set of blocks on a physical disk device. |
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http://www.openqnx.com/static/neutrino/sys_arch/fsys.html
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| | Daemon News '200402' : '"Managing Filesystems : fstab "' |
| | The swap partition is not part of the filesystem since it is used exclusively by the system memory as a temporary storage area and is not mounted, therefore it does not have a mount point. | | | The first thing to realize when dealing with the Unix filesystem is that everything can be addressed as a file. | | | Even system hardware has a file representation that is used to access it. |
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http://ezine.daemonnews.org/200402/fstab.html
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| | Creating embedded Linux filesystems with graphical tools |
| | The first filesystem mounted by Linux systems during the boot process is known as a root filesystem because it is automatically mounted at the Linux directory '/', which is the base of the hierarchical Linux filesystem. | | | Though TimeStorm LDS makes it easy to assemble a root filesystem that is suitable for running your Linux system and application(s), it's important to understand the applications that your system may execute during the boot process, in order to make sure that they are present in your root filesystem. | | | If you are creating an initial RAM disk, you have to create an empty file, associate that file with a Linux device, create the filesystem, and then mount that file as a special type of virtual device known as a loopback device in order to populate it. |
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http://linuxdevices.com/articles/AT3617019494.html
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| | Distributed filesystems |
| | Under NFS, it is not possible to access a filesystem indirectly. | | | Once a filesystem has been NFS-exported by an NFS server, an NFS client sees the filesystem as type NFS and may therefore mount that filesystem irrespective of its actual type. | | | With NFS, it is not possible to access a remote-mounted device or any other character or block-special file. |
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http://osr507doc.sco.com/en/NetAdminG/nfsC.distfs.html
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| | Filesystems |
| | The filesystem on the device must be a Linux filesystem for this to work. | | | This program is used to attach a filesystem on some device to the Unix directory tree. | | | If this fails, the files /etc/filesystems or /proc/filesystems will be read and all filesystems listed there will be tried except for proc and nfs. |
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http://www.comptechdoc.org/os/linux/howlinuxworks/linux_hlfilesystems.html
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| | Writing Stackable Filesystems Linux Journal |
| | In fact, manipulating file data in any filesystem is rather complex because it involves multiple methods, as well as two forms of accessing file's data, the read and write system calls, which can work at any file offset, and mmap, which works on whole pages. | | | When the VFS needs to unlink a file in a Wrapfs filesystem, it calls wrapfs_unlink, passing it the inode of the directory in which the file to remove resides (dir) and the name of the entry to remove (encapsulated in dentry). | | | In this filesystem, we want to encrypt all file data using a function (presumably already written) called rot13 that takes an input buffer, output buffer and their lengths. |
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http://www.linuxjournal.com/article.php?sid=6485
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| | Chapter 15: Filesystems, Disks, and Other Devices: Creating New Filesystems |
| | Separately providing the facility of formatting floppy disks in each of these programs is poor design and requires you to learn a different way of doing it for each kind of new filesystem. | | | If an ext2 filesystem encounters an error (for example, a bad disk block) there are three possible responses to the error: | | | The -m option specifies how much of the filesystem is reserved for root's use (for example, for working space when the system disk would otherwise have filled completely). |
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http://kia.etel.ru/lib/rhl6u/rhl6u143.htm
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| | Chapter 7. Maintaining Filesystems |
| | For filesystems where the user's soft limit for disk usage or files is exceeded, gives the number of days until the user is prohibited from using additional disk space or creating more files. | | | For XFS filesystems, you must first turn on disk quotas on a filesystem, then set quotas on that filesystem for users and projects or groups. | | | For XFS filesystems, the number of free inodes is the maximum number that could be allocated if needed. |
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http://biology.ncsa.uiuc.edu/library/SGI_bookshelves/SGI_Admin/books/IA_DiskFiles/sgi_html/ch07.html
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| | Filesystems for Linux |
| | XFS was designed with big filesystems and high performance in mind (think computer graphics animation). | | | A filesystem is the "method" used to organise data on a disk. | | | The choice of filesystem is an important one since it affects performance, recovery from errors, compatibility with other OS's, limitations on partition and file sizes, and so on. |
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http://linux.org.mt/article/filesystems
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| | About mounting DOS filesystems |
| | UNIX filesystems are highly structured and operate in a multiuser environment. | | | If you mount the DOS filesystem under the UNIX system and access a file created under DOS, the timestamp will also be wrong because the UNIX system assumes the timestamp was recorded in GMT and converts it to the local time. | | | You can mount a DOS filesystem and access its files freely while still operating from your UNIX system. |
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http://ou800doc.caldera.com/FS_manager/fsC.mountDOS.html
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| | Journaling Filesystems for Linux |
| | Journaling filesystems minimize system restart time and optimize storage on the disks that are physically connected to a specific machine. | | | As we'll see in the next article, distributed filesystems provide many other types of administrative and performance advantages starting at the opposite end of the spectrum—networked enterprise, academic, and related wide-scale computing environments. | | | As you can see, there are a variety of journaling filesystems available for Linux, most of which have significant history on other platforms, or have substantial usage and "testing" on Linux itself. |
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http://www.informit.com/articles/article.asp?p=26885&seqNum=7
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| | Filesystems |
| | The basic definition of a filesystem was discussed in the filesystems section of Understanding UNIX Concepts. | | | All paths beginning with '/' are relative to the root filesystem; therefore, '/' is at the base of the root filesystem. | | | As far as the user is concerned, each physical filesystem is accessed using the same set of UNIX system calls. |
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http://www.ussg.iu.edu/usail/peripherals/disks/filesystems
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| | Filesystems HOWTO |
| | This is a new 64bit journaling filesystem using a balanced tree algorithms. | | | Author of Linux filesystem implementation is Ray Burr < ryb@nightmare.com>. | | | This filesystem type is used on Version 7 Unix for PDP-11 machines. |
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http://www.faqs.org/docs/Linux-HOWTO/Filesystems-HOWTO.html
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| | Linux Kernel 2.4 Internals: Virtual Filesystem (VFS) |
| | While we are at it, note that for UNIX-style filesystems which have the concept of on-disk inode number, it is the lookup method's job to map its endianness to current CPU format, e.g. | | | The code to implement a filesystem can be either a dynamically loadable module or statically linked into the kernel, and the way it is done under Linux is very transparent. | | | The interface for filesystem writers had to be very simple so that people could try to reverse engineer existing proprietary filesystems by writing read-only versions of them. |
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http://www.faqs.org/docs/kernel_2_4/lki-3.html
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| | LWN: FUSE - implementing filesystems in user space |
| | SieFS is an example of a filesystem implemented with FUSE. | | | the example filesystem provided with FUSE (which implements a simple sort of loopback filesystem) is reasonably easy to follow. | | | Linux has a long tradition of user-space filesystems, actually; NFS was implemented that way for quite some time. |
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http://lwn.net/Articles/68104
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| | File Systems |
| | Some filesystems might be slower (but our example "Net" filesystem spends all the time waiting for servers at the other end, so it'd be just as slow in any other language). | | | SGI is working on making their XFS filesystem available on Linux. | | | You need to recompile your filesystem for every combination of operating system/version where you want to use it. |
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http://cbbrowne.com/info/fs.html
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| | Filesystems |
| | If it's the root file system that fsck is working on, throw a floppy in (it doesn't have to be formatted for Unix but it does need not to have bad blocks) and tell it to use /dev/fd0. | | | This is not a problem once Unix is up and running, but it is the built in BIOS that starts the boot process is used for the first stages, so it's usually important to be sure that the /stand filesystem will always fall under that limit. | | | Remember, this is a limitation of the BIOS, not of SCO Unix. |
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http://aplawrence.com/Boot/filesystems.html
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| | Linux: Benchmarking Filesystems In 2.6.0-test2 |
| | Not even might the same filesystem have better or worse real-life results when the software is changed (different mta, db,...), but the requirements for specific usage might be totally different. | | | Grant Miner posted some interesting benchmark results to the lkml, comparing five journaling filesystems available with the current 2.6.0-test2 development kernel. | | | Even if we both use the same software in the same way for the same purpose, you might have more memory or produce bigger files (which both would benefit xfs, for instance). |
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http://kerneltrap.org/node/view/715
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| | LinuxPlanet - Reports - Modern Distributed Filesystems For Linux: An Introduction - What Are Distributed Filesystems? |
| | Distributed filesystems such as OpenAFS (http://www.openafs.org) are Open Source releases of distributed filesystems that have been in commercial use for over a decade (AFS). | | | This article provides an overview of the benefits of distributed filesystems, discusses the most significant administrative issues in deploying and using distributed filesystems, and introduces the most interesting new distributed filesystems available for Linux today. | | | Linux and Unix systems traditionally use the NFS network filesystem in order to do the same sort of thing. |
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http://www.linuxplanet.com/linuxplanet/reports/4361/1
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| | NewsForge Optimizing Linux filesystems |
| | The idea is to catch errors that might creep onto the filesystem due to random disk write errors or filesystem driver bugs. | | | For instance, changing from one filesystem to another requires you to back up, create a new filesystem, and restore your files. | | | Modifying these options can help in some unusual cases, such as filesystems storing huge numbers of files or a computer that's restarted frequently. |
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http://www.newsforge.com/os/03/10/07/1943256.shtml?tid=23
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| | Review of Linux Filesystems |
| | A copy of the relevant software is also available on the CD included with this book. | | | If the reader is interested in learning more about both the local filesystem and network file protocol options available for Linux, I believe this book will be worthwhile. | | | While the information isn't of the depth that one would expect from a text book on file system design, there's enough information presented here to satisfy the majority of the book's audience. |
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http://www.jetcafe.org/~npc/reviews/computing/linux_filesystems.html
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| | Cryptographic Filesystems, Part One: Design and Implementation |
| | While the technology for cryptographic filesystems has been available for quite a while, the deployment of cryptographic filesystems in production environments has not taken hold. | | | Using this implementation model, the file system can be mounted on any directory as well as on top of another file system such as UFS or NFS[1]. | | | This article will discuss some of the background and technology of cryptographic filesystems and will then cover some example implementations of these filesystems including Microsoft's Encrypting File System for Windows 2000, the Linux CryptoAPI, and the Secure File System. |
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http://securityfocus.com/infocus/1673
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| | Creating your own filesystems |
| | gBootRoot is a fairly general GTK-based app for creating UML root filesystems, plus filesystems and boot disks for physical machines. | | | It has a simple config file and looks to be fairly easy to extend. | | | Because of this mechanism additional user-friendly features for filesystems like the automation of X or Networking exist for some root methods. |
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http://user-mode-linux.sourceforge.net/fs_making.html
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| | Administering filesystems |
| | Creating filesystems on the primary hard disk (at installation time) -- see ``The installation and upgrade procedure'' | | | One of the most important responsibilities of a system administrator is creating and maintaining filesystems. | | | NOTE: In addition to the networking components included with your SCO OpenServer distribution, SCO offers two products that provide distributed filesystem services: SCO Advanced File and Print Server and Samba File and Print Server for SCO OpenServer. |
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http://osr507doc.sco.com/en/OSAdminG/fsN.fsadmin.html
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| | Filesystems |
| | Before you can consider writing a filesystem for Linux, you need to have at least a vague understanding of how the Linux Virtual Filesystem Switch operates. | | | Design and Implementation of the Second Extended Filesystem | | | There has been very little documentation so far regarding writing filesystems for Linux. |
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http://www.tldp.org/LDP/khg/HyperNews/get/fs/fs.html
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| | § Linux filesystems |
| | efslook: read/debug EFS filesystems (ported to Linux and x86) {new} | | | ext2fsnt: Linux Ext2 filesystem for Windows NT driver | | | Small trail through the Linux kernel (FS system calls) |
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http://www.xenotime.net/linux/linux-fs.html
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