DFS examples: Sun`s NFS, Andrew FS
... u Developed during mid-1980s as part of the Andrew distributed computing environment u Designed to support a WAN of more than 5000 workstations u Much of the core technology is now part of the Open Software Foundation (OSF) Distributed Computing Environment (DCE), available for most UNIX and some ot ...
... u Developed during mid-1980s as part of the Andrew distributed computing environment u Designed to support a WAN of more than 5000 workstations u Much of the core technology is now part of the Open Software Foundation (OSF) Distributed Computing Environment (DCE), available for most UNIX and some ot ...
Title goes here
... NFS protocol provides a set of RPCs for remote file operations Looking up a file within a directory Manipulating links and directories Creating, renaming, and removing files Getting and setting file attributes Reading and writing files NFS is stateless Servers do not maintain information ...
... NFS protocol provides a set of RPCs for remote file operations Looking up a file within a directory Manipulating links and directories Creating, renaming, and removing files Getting and setting file attributes Reading and writing files NFS is stateless Servers do not maintain information ...
Unix File System
... Ext2fs does not use fragments; it performs its allocations in smaller units: The default block size on ext2fs is 1Kb, although 2Kb and 4Kb blocks are also supported. ...
... Ext2fs does not use fragments; it performs its allocations in smaller units: The default block size on ext2fs is 1Kb, although 2Kb and 4Kb blocks are also supported. ...
The Styx Architecture for Distributed Systems
... All communication with other parts of the system is by explicit messages sent between components. This communication differs in style from applications’ use of local resources. ...
... All communication with other parts of the system is by explicit messages sent between components. This communication differs in style from applications’ use of local resources. ...
CS307-slides13
... Venus carries out path-name translation component by component The UNIX file system is used as a low-level storage system for both servers ...
... Venus carries out path-name translation component by component The UNIX file system is used as a low-level storage system for both servers ...
Chapter 14: The User View of Operating Systems 0
... o Pass data between programs and communicate between users o Simple: can place shared programs in a common memory area (editors, compilers, etc. o Data file sharing Databases When group is working on a project, some can read, others can modify, etc. Email, ftp, terminal support… o Multiuser sy ...
... o Pass data between programs and communicate between users o Simple: can place shared programs in a common memory area (editors, compilers, etc. o Data file sharing Databases When group is working on a project, some can read, others can modify, etc. Email, ftp, terminal support… o Multiuser sy ...
Sequential file Processing
... data and check the results. If it was incorrect, we would change the program, run it again, and reenter the data. Depending on the application, it may be more efficient to capture the raw data the first time it is entered and store in a file. A program or many different programs can then read ...
... data and check the results. If it was incorrect, we would change the program, run it again, and reenter the data. Depending on the application, it may be more efficient to capture the raw data the first time it is entered and store in a file. A program or many different programs can then read ...
Directories
... • File is a collection of data items stored on disk. Or, it's device which can store the information like data, music (mp3 files), picture, movie, sound, book etc. • In fact whatever you store in computer it must be in the form of file. • File is the last object in your file system tree. ...
... • File is a collection of data items stored on disk. Or, it's device which can store the information like data, music (mp3 files), picture, movie, sound, book etc. • In fact whatever you store in computer it must be in the form of file. • File is the last object in your file system tree. ...
Chapter 10-11 File Systems
... blocks may have internal fragmentation packing data into blocks -- may eliminate internal (block) fragmentation but may make data more difficult to locate packing data into bytes – unrelated to current topic, e.g., see binary coded decimals Disk System Partitions -- segregate portions of the disk sy ...
... blocks may have internal fragmentation packing data into blocks -- may eliminate internal (block) fragmentation but may make data more difficult to locate packing data into bytes – unrelated to current topic, e.g., see binary coded decimals Disk System Partitions -- segregate portions of the disk sy ...
Distributed File Systems
... make the most sense. Error recovery would seldom be needed, allowing the features of a stateful system to be used. If the network is very fast as well as reliable, caching can be done on the server side. On a slower network caching on both server and client will speed performance, as would file loca ...
... make the most sense. Error recovery would seldom be needed, allowing the features of a stateful system to be used. If the network is very fast as well as reliable, caching can be done on the server side. On a slower network caching on both server and client will speed performance, as would file loca ...
CIS162AB
... data and check the results. If it was incorrect, we would change the program, run it again, and reenter the data. Depending on the application, it may be more efficient to capture the raw data the first time it is entered and store in a file. A program or many different programs can then read ...
... data and check the results. If it was incorrect, we would change the program, run it again, and reenter the data. Depending on the application, it may be more efficient to capture the raw data the first time it is entered and store in a file. A program or many different programs can then read ...
The broken file shredder
... Journaling file systems may create additional temporary copies of data (Ext3fs: journal=data). Copy-on-write file systems (like Solaris ZFS) never overwrite a disk block that is “in use”. None of these problems exist with file systems that encrypt each file with its own encryption key. ...
... Journaling file systems may create additional temporary copies of data (Ext3fs: journal=data). Copy-on-write file systems (like Solaris ZFS) never overwrite a disk block that is “in use”. None of these problems exist with file systems that encrypt each file with its own encryption key. ...
Chapter 9 Physical Database Design Methodology
... • Duplicating nonkey attributes or foreign keys in one-to-many relationship (po, supplier) • Duplicating attributes in man-to-many relationship ...
... • Duplicating nonkey attributes or foreign keys in one-to-many relationship (po, supplier) • Duplicating attributes in man-to-many relationship ...
slides
... Create a bit vector with as many entries as there are blocks Follow the free list and each i-node block list When a block is encountered, examine its bit If the bit was 0, set it to 1 If the bit was already 1 • if the block is both in a file and on the free list, remove it from the free list ...
... Create a bit vector with as many entries as there are blocks Follow the free list and each i-node block list When a block is encountered, examine its bit If the bit was 0, set it to 1 If the bit was already 1 • if the block is both in a file and on the free list, remove it from the free list ...
In this example there is a link to Assignments in...
... In this example there is a link to Assignments in the left navigation menu. Some courses may also have Assignments listed as part of Course Content or a Learning Module. ...
... In this example there is a link to Assignments in the left navigation menu. Some courses may also have Assignments listed as part of Course Content or a Learning Module. ...
(DOCX, Unknown)
... FAT – is read/write compatible with the majority of current and obsolete operating systems. NTFS – Only read/write compatible with windows and mac operating systems that come after its introduction in 2001. Storage Sizes FAT – only supports up to 4GB files and its volume tops out at 2TB in size. NTF ...
... FAT – is read/write compatible with the majority of current and obsolete operating systems. NTFS – Only read/write compatible with windows and mac operating systems that come after its introduction in 2001. Storage Sizes FAT – only supports up to 4GB files and its volume tops out at 2TB in size. NTF ...
CSc 352: Systems Programming & Unix
... • Unix is an operating system – sits between the hardware and the user/applications – provides high-level abstractions (e.g., files) and services (e.g., multiprogramming) ...
... • Unix is an operating system – sits between the hardware and the user/applications – provides high-level abstractions (e.g., files) and services (e.g., multiprogramming) ...
File system implementation
... Indexed allocation solve this problem by index block (bring all pointers into one location) Each file has its own index block, which is an array of disk-block addresses. When the file is created, all pointers in the index block are set to nil. When the ith block is first written, a block is obtained ...
... Indexed allocation solve this problem by index block (bring all pointers into one location) Each file has its own index block, which is an array of disk-block addresses. When the file is created, all pointers in the index block are set to nil. When the ith block is first written, a block is obtained ...
What Is Operating System? Operating Systems, System Calls, and Buffered I/O
... #include
#include
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...
... #include
Lab 1 – Using the File System through Windows Explorer
... 8. Shortcuts: Desktop and keyboard shortcuts 9. Other File Managers: what other file managers are available? It is important that you complete this and other lab sheets even though you feel you are familiar with Windows 7. ...
... 8. Shortcuts: Desktop and keyboard shortcuts 9. Other File Managers: what other file managers are available? It is important that you complete this and other lab sheets even though you feel you are familiar with Windows 7. ...
Files and Directories
... – Small blocks for storage efficiency – Files used together should be stored together ...
... – Small blocks for storage efficiency – Files used together should be stored together ...
Disk Partitioning - Seton Hall University
... need, which may be a difficult task • Logical Volume Management, often used in servers, increases flexibility by allowing data in volumes to expand into separate physical disks • Another option is to resize existing partitions when necessary. ...
... need, which may be a difficult task • Logical Volume Management, often used in servers, increases flexibility by allowing data in volumes to expand into separate physical disks • Another option is to resize existing partitions when necessary. ...
FileSystems
... Can simulate last two with first method by inserting appropriate control characters. Need at least executable binary and data Type indicated by “type” extension Resource fork (Mac) Magic number (UNIX) More complexity requires more OS support ...
... Can simulate last two with first method by inserting appropriate control characters. Need at least executable binary and data Type indicated by “type” extension Resource fork (Mac) Magic number (UNIX) More complexity requires more OS support ...
OSPP: File Systems
... – Small blocks for storage efficiency – Files used together should be stored together ...
... – Small blocks for storage efficiency – Files used together should be stored together ...