block special file

Linux virtual file system four main objects:1) Super Block2) Index node (inode)3) Catalog entry (dentry)4) Document object (file)A process that refers to various objects as it operates on a file is as follows:by Task_struct get files_struct, then

5.oracle dump understanding five data block theoryWelcome reprint, Reprint please indicate source: http://blog.csdn.net/notbaron/article/details/51228514The first two articles describe what we see at the operational level, but without theoretical

1. Physical bad blocks and logical bad blocksThere is a concept in the database called data block consistency, Oracle's data block consistency includes two levels: physical consistency and logical consistency, if a data block at these two levels of

ObjectiveThe ios4.0 system has started to support block, and during programming the block is considered an object by Obj-c, which encapsulates a piece of code that can be executed at any time. A block can be used as a function parameter or as a

Objective The first two articles simply implement blockchain creation and proof of workload, but they are all in memory. The actual blockchain should be stored permanently, which makes sense. A permanent blockchain storage is started

Original Address: BIO and block device driverdevices in the system that have random access to fixed-size data slices (chunk) are called block devices, which are called blocks. Block device files are used in a way that installs the file system, which

Oracle Database EXP Export DMP file corrupt existence bad block/corruption skip DMP bad block by CPFL tool importIn some cases, it is known that data can be recovered from a table of damaged DMP files through Dul, but there are many problems with

Although it is thought that the block chain (blockchain) is an answer to the problem before the technology, but there is no doubt that the new technology is a computational miracle. But what is the block chain? An open digital ledger that grows

The file system on Linux is generally EXT2 or EXT3, but this article is not ready to talk about them directly, but I want to combine the Linux operating system and from the foundation of the file system-the hard disk to start, step-by-step

Single block read, block read What is single read? As the name implies, a single block can be read by a single block. The waiting event is db file sequential read. What are the situations of a single block read? Most index scans are for a single