Operating System: In a combined UNIX UFS file system, with single, double and triple indirect poi...
Q1) A particular implementation of UNIX operating system provides the file structure modelled in the Figure 1. Here the i-node for the file contains certain information such as the access permissions for the file. This is followed by the entries that contain information about where the file is located on the storage device. The first 10 entries are the addresses of blocks where actual data for the file are stored. If block can contain 512 bytes of information, then these...
Computer Science Operation System question. I will give thumb
up, thank you!
Consider a file system that uses inodes to represent
files. This file system has 16 direct disk blocks, as well as
single, double, and triple indirect disk blocks. This file system
is illustrated in the below figure. Please notice that the tables
pointed to by the indirect pointers are full sized blocks that only
stores pointers.
mode owners (2) timestamps (3) size block count data data data direct...
A UNIX-type file-system uses a disk block size of 1KB, 128 byte inodes, and 32 bit disk addresses. If the inode contains 64 bytes of data, 8 direct, 1 indirect, 1 double-indirect, and 1 triple- indirect blocks, apart from other file information. How many disk blocks would be required for storing files of sizes (a) 1 byte (b) 1024 bytes (c) 64 KB (d) 1MB ?
Consider a file system that uses inodes to represent files. To locate the physical blocks of each file, its inode contains up to 12 direct disk blocks, as well as one single, one double, and one triple indirect disk blocks. a. If disk blocks are 1 KB in size, and a pointer to a disk block requires 4 bytes. What is the maximum size of a file that can be stored in this file system? Note the size of a...
1. (10 pts) What is the largest file size if the inode is as follows: size of the inode is 128 Bytes out of which 64 Bytes are used for layout information, . each pointer is of size 8 Bytes and the file system block size is 4 KBytes, the inode has 2 direct pointers, 2 single indirect pointers, 2 double indirect pointers, and 2 triple indirect pointers 2. (10 pts) Find the average seek time (under the assumptions we...
Really don't know what its about...
Course in operating system, file system
Question 2. File Systems (10 marks) (a) Consider a 32GB hard disk and a FAT file system with 24 bits cluster (block) address. What is the minimum block (cluster) size in order to fully utilize all space in the hard disk? (3 marks) (b) Consider an index-based file system with the inode containing 64 direct pointers, 1 indirect pointer, and 1 double-indirect pointer. Suppose the size of a...
What is the maximum file size supported by a file system with 16 direct blocks, a single, a double, and a triple indirection blocks? The block size is 1KB. Disk block numbers can be stored in 4 bytes.
Part B
Consider a file system that uses a structure similar to an i-node with the following differences. If the file size is less than 100 bytes, the data is stored directly in the i-node. If it is larger, there are 8 direct links (point to a data block), 2 single-indirect links, 1-double indirect links and 1 triple indirect link. What is the largest file size that can be indexed in this system? Assume the block size is 1024 bytes....
11. Consider a file system that uses a structure similar to an i-node with the following differences. If the file size is less than 100 bytes, the data is stored directly in the i-node. If it is larger, there are 6 direct links (point to a data block), 1 single-indirect links, 2-double indirect links and 1 triple indirect link. (a) What is the largest file size that can be indexed in this system? Assume the block size is 512 bytes....
How many disk accesses are needed to bring byte 4090 of a file into memory when the file is stored using double indirect indexed allocation? Assume that only the file's FCB is in memory, block pointers require 32 bits, and that blocks hold 1024 bytes each.
How many disk accesses are needed to bring byte 4090 of a file into memory when the file is stored using double indirect indexed allocation? Assume that only the file's FCB is in memory,...