What are the three main structural sections of a Linux filesystem? Describe each section.

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Answer 1

The three main structural section of the Linux filesystem are the superblock, the inode table, and the data blocks.The superblock is the section that contains information about the filesystem in general, such as the number of inodes and data blocks, as well as how much data a data block stores in Kilobytes.  The inode table consists of several inodes (information nodes); each inode describes one file or directory on the filesystem, and contains a unique inode number for identification.What is more important, the inode stores information such as the file size, data block locations, last date modified, permissions, and ownership. When a file is deleted, only its inode (which serves as a pointer to the actual data) is deleted.  The data that makes up the contents of the file as well as the filename are stored in data blocks, which are referenced by the inode. In filesystem-neutral terminology, blocks are known as allocation units because they are the unit by which disk space is allocated for storage.